From 575ade22d4de472ccf9e7d2dc1ffca37416c58f6 Mon Sep 17 00:00:00 2001 From: Joseph Eagar Date: Wed, 20 Apr 2022 22:03:45 -0700 Subject: Commit D14179: Revamp Vertex Paint With C++ - Verrtex paint mode has been refactored into C++ templates. It now works with both byte and float colors and point & corner attribute domains. - There is a new API for mixing colors (also based on C++ templates). Unlike the existing APIs byte and float colors are interpolated identically. Interpolation does happen in a squared rgb space, this may be changed in the future. - Vertex paint now uses the sculpt undo system. Reviewed By: Brecht Van Lommel. Differential Revision: https://developer.blender.org/D14179 Ref D14179 --- source/blender/editors/sculpt_paint/paint_vertex.c | 3585 -------------------- 1 file changed, 3585 deletions(-) delete mode 100644 source/blender/editors/sculpt_paint/paint_vertex.c (limited to 'source/blender/editors/sculpt_paint/paint_vertex.c') diff --git a/source/blender/editors/sculpt_paint/paint_vertex.c b/source/blender/editors/sculpt_paint/paint_vertex.c deleted file mode 100644 index 10d24af53ee..00000000000 --- a/source/blender/editors/sculpt_paint/paint_vertex.c +++ /dev/null @@ -1,3585 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later - * Copyright 2001-2002 NaN Holding BV. All rights reserved. */ - -/** \file - * \ingroup edsculpt - * - * Used for vertex color & weight paint and mode switching. - * - * \note This file is already big, - * use `paint_vertex_color_ops.c` & `paint_vertex_weight_ops.c` for general purpose operators. - */ - -#include "MEM_guardedalloc.h" - -#include "BLI_array_utils.h" -#include "BLI_listbase.h" -#include "BLI_math.h" -#include "BLI_rect.h" -#include "BLI_string.h" -#include "BLI_task.h" - -#include "DNA_brush_types.h" -#include "DNA_mesh_types.h" -#include "DNA_object_types.h" -#include "DNA_particle_types.h" -#include "DNA_scene_types.h" - -#include "RNA_access.h" - -#include "BKE_attribute.h" -#include "BKE_brush.h" -#include "BKE_colortools.h" -#include "BKE_context.h" -#include "BKE_deform.h" -#include "BKE_layer.h" -#include "BKE_lib_id.h" -#include "BKE_main.h" -#include "BKE_mesh.h" -#include "BKE_mesh_mapping.h" -#include "BKE_modifier.h" -#include "BKE_object.h" -#include "BKE_object_deform.h" -#include "BKE_paint.h" -#include "BKE_report.h" -#include "BKE_subsurf.h" - -#include "DEG_depsgraph.h" - -#include "WM_api.h" -#include "WM_message.h" -#include "WM_toolsystem.h" -#include "WM_types.h" - -#include "ED_armature.h" -#include "ED_mesh.h" -#include "ED_object.h" -#include "ED_screen.h" -#include "ED_view3d.h" - -/* For IMB_BlendMode only. */ -#include "IMB_imbuf.h" - -#include "BKE_ccg.h" -#include "bmesh.h" - -#include "paint_intern.h" /* own include */ -#include "sculpt_intern.h" - -/* -------------------------------------------------------------------- */ -/** \name Internal Utilities - * \{ */ - -/* Use for 'blur' brush, align with PBVH nodes, created and freed on each update. */ -struct VPaintAverageAccum { - uint len; - uint value[3]; -}; - -struct WPaintAverageAccum { - uint len; - double value; -}; - -struct NormalAnglePrecalc { - bool do_mask_normal; - /* what angle to mask at */ - float angle; - /* cos(angle), faster to compare */ - float angle__cos; - float angle_inner; - float angle_inner__cos; - /* difference between angle and angle_inner, for easy access */ - float angle_range; -}; - -static void view_angle_limits_init(struct NormalAnglePrecalc *a, float angle, bool do_mask_normal) -{ - angle = RAD2DEGF(angle); - a->do_mask_normal = do_mask_normal; - if (do_mask_normal) { - a->angle_inner = angle; - a->angle = (a->angle_inner + 90.0f) * 0.5f; - } - else { - a->angle_inner = a->angle = angle; - } - - a->angle_inner *= (float)(M_PI_2 / 90); - a->angle *= (float)(M_PI_2 / 90); - a->angle_range = a->angle - a->angle_inner; - - if (a->angle_range <= 0.0f) { - a->do_mask_normal = false; /* no need to do blending */ - } - - a->angle__cos = cosf(a->angle); - a->angle_inner__cos = cosf(a->angle_inner); -} - -static float view_angle_limits_apply_falloff(const struct NormalAnglePrecalc *a, - float angle_cos, - float *mask_p) -{ - if (angle_cos <= a->angle__cos) { - /* outsize the normal limit */ - return false; - } - if (angle_cos < a->angle_inner__cos) { - *mask_p *= (a->angle - acosf(angle_cos)) / a->angle_range; - return true; - } - return true; -} - -static bool vwpaint_use_normal(const VPaint *vp) -{ - return ((vp->paint.brush->flag & BRUSH_FRONTFACE) != 0) || - ((vp->paint.brush->flag & BRUSH_FRONTFACE_FALLOFF) != 0); -} - -static bool brush_use_accumulate_ex(const Brush *brush, const int ob_mode) -{ - return ((brush->flag & BRUSH_ACCUMULATE) != 0 || - (ob_mode == OB_MODE_VERTEX_PAINT ? (brush->vertexpaint_tool == VPAINT_TOOL_SMEAR) : - (brush->weightpaint_tool == WPAINT_TOOL_SMEAR))); -} - -static bool brush_use_accumulate(const VPaint *vp) -{ - return brush_use_accumulate_ex(vp->paint.brush, vp->paint.runtime.ob_mode); -} - -static MDeformVert *defweight_prev_init(MDeformVert *dvert_prev, - MDeformVert *dvert_curr, - int index) -{ - MDeformVert *dv_curr = &dvert_curr[index]; - MDeformVert *dv_prev = &dvert_prev[index]; - if (dv_prev->flag == 1) { - dv_prev->flag = 0; - BKE_defvert_copy(dv_prev, dv_curr); - } - return dv_prev; -} - -/* check if we can do partial updates and have them draw realtime - * (without evaluating modifiers) */ -static bool vertex_paint_use_fast_update_check(Object *ob) -{ - const Mesh *me_eval = BKE_object_get_evaluated_mesh(ob); - - if (me_eval != NULL) { - Mesh *me = BKE_mesh_from_object(ob); - if (me && me->mloopcol) { - return (me->mloopcol == CustomData_get_layer(&me_eval->ldata, CD_PROP_BYTE_COLOR)); - } - } - - return false; -} - -static void paint_last_stroke_update(Scene *scene, const float location[3]) -{ - UnifiedPaintSettings *ups = &scene->toolsettings->unified_paint_settings; - ups->average_stroke_counter++; - add_v3_v3(ups->average_stroke_accum, location); - ups->last_stroke_valid = true; -} - -bool vertex_paint_mode_poll(bContext *C) -{ - Object *ob = CTX_data_active_object(C); - - if (!(ob && ob->mode == OB_MODE_VERTEX_PAINT && ((Mesh *)ob->data)->totpoly)) { - return false; - } - - CustomDataLayer *layer = BKE_id_attributes_active_color_get((ID *)ob->data); - AttributeDomain domain = BKE_id_attribute_domain((ID *)ob->data, layer); - - return layer && layer->type == CD_PROP_BYTE_COLOR && domain == ATTR_DOMAIN_CORNER; -} - -static bool vertex_paint_poll_ex(bContext *C, bool check_tool) -{ - if (vertex_paint_mode_poll(C) && BKE_paint_brush(&CTX_data_tool_settings(C)->vpaint->paint)) { - ScrArea *area = CTX_wm_area(C); - if (area && area->spacetype == SPACE_VIEW3D) { - ARegion *region = CTX_wm_region(C); - if (region->regiontype == RGN_TYPE_WINDOW) { - if (!check_tool || WM_toolsystem_active_tool_is_brush(C)) { - return true; - } - } - } - } - return false; -} - -bool vertex_paint_poll(bContext *C) -{ - return vertex_paint_poll_ex(C, true); -} - -bool vertex_paint_poll_ignore_tool(bContext *C) -{ - return vertex_paint_poll_ex(C, false); -} - -bool weight_paint_mode_poll(bContext *C) -{ - Object *ob = CTX_data_active_object(C); - - return ob && ob->mode == OB_MODE_WEIGHT_PAINT && ((Mesh *)ob->data)->totpoly; -} - -static bool weight_paint_poll_ex(bContext *C, bool check_tool) -{ - Object *ob = CTX_data_active_object(C); - ScrArea *area; - - if ((ob != NULL) && (ob->mode & OB_MODE_WEIGHT_PAINT) && - (BKE_paint_brush(&CTX_data_tool_settings(C)->wpaint->paint) != NULL) && - (area = CTX_wm_area(C)) && (area->spacetype == SPACE_VIEW3D)) { - ARegion *region = CTX_wm_region(C); - if (ELEM(region->regiontype, RGN_TYPE_WINDOW, RGN_TYPE_HUD)) { - if (!check_tool || WM_toolsystem_active_tool_is_brush(C)) { - return true; - } - } - } - return false; -} - -bool weight_paint_poll(bContext *C) -{ - return weight_paint_poll_ex(C, true); -} - -bool weight_paint_poll_ignore_tool(bContext *C) -{ - return weight_paint_poll_ex(C, false); -} - -uint vpaint_get_current_col(Scene *scene, VPaint *vp, bool secondary) -{ - Brush *brush = BKE_paint_brush(&vp->paint); - uchar col[4]; - rgb_float_to_uchar(col, - secondary ? BKE_brush_secondary_color_get(scene, brush) : - BKE_brush_color_get(scene, brush)); - col[3] = 255; /* alpha isn't used, could even be removed to speedup paint a little */ - return *(uint *)col; -} - -/* wpaint has 'wpaint_blend' */ -static uint vpaint_blend(const VPaint *vp, - uint color_curr, - uint color_orig, - uint color_paint, - const int alpha_i, - /* pre scaled from [0-1] --> [0-255] */ - const int brush_alpha_value_i) -{ - const Brush *brush = vp->paint.brush; - const IMB_BlendMode blend = brush->blend; - - uint color_blend = ED_vpaint_blend_tool(blend, color_curr, color_paint, alpha_i); - - /* If no accumulate, clip color adding with `color_orig` & `color_test`. */ - if (!brush_use_accumulate(vp)) { - uint color_test, a; - char *cp, *ct, *co; - - color_test = ED_vpaint_blend_tool(blend, color_orig, color_paint, brush_alpha_value_i); - - cp = (char *)&color_blend; - ct = (char *)&color_test; - co = (char *)&color_orig; - - for (a = 0; a < 4; a++) { - if (ct[a] < co[a]) { - if (cp[a] < ct[a]) { - cp[a] = ct[a]; - } - else if (cp[a] > co[a]) { - cp[a] = co[a]; - } - } - else { - if (cp[a] < co[a]) { - cp[a] = co[a]; - } - else if (cp[a] > ct[a]) { - cp[a] = ct[a]; - } - } - } - } - - if ((brush->flag & BRUSH_LOCK_ALPHA) && - !ELEM(blend, IMB_BLEND_ERASE_ALPHA, IMB_BLEND_ADD_ALPHA)) { - char *cp, *cc; - cp = (char *)&color_blend; - cc = (char *)&color_curr; - cp[3] = cc[3]; - } - - return color_blend; -} - -static void tex_color_alpha(VPaint *vp, const ViewContext *vc, const float co[3], float r_rgba[4]) -{ - const Brush *brush = BKE_paint_brush(&vp->paint); - BLI_assert(brush->mtex.tex != NULL); - if (brush->mtex.brush_map_mode == MTEX_MAP_MODE_3D) { - BKE_brush_sample_tex_3d(vc->scene, brush, co, r_rgba, 0, NULL); - } - else { - float co_ss[2]; /* screenspace */ - if (ED_view3d_project_float_object( - vc->region, co, co_ss, V3D_PROJ_TEST_CLIP_BB | V3D_PROJ_TEST_CLIP_NEAR) == - V3D_PROJ_RET_OK) { - const float co_ss_3d[3] = {co_ss[0], co_ss[1], 0.0f}; /* we need a 3rd empty value */ - BKE_brush_sample_tex_3d(vc->scene, brush, co_ss_3d, r_rgba, 0, NULL); - } - else { - zero_v4(r_rgba); - } - } -} - -/* vpaint has 'vpaint_blend' */ -static float wpaint_blend(const VPaint *wp, - float weight, - const float alpha, - float paintval, - const float UNUSED(brush_alpha_value), - const short do_flip) -{ - const Brush *brush = wp->paint.brush; - IMB_BlendMode blend = brush->blend; - - if (do_flip) { - switch (blend) { - case IMB_BLEND_MIX: - paintval = 1.0f - paintval; - break; - case IMB_BLEND_ADD: - blend = IMB_BLEND_SUB; - break; - case IMB_BLEND_SUB: - blend = IMB_BLEND_ADD; - break; - case IMB_BLEND_LIGHTEN: - blend = IMB_BLEND_DARKEN; - break; - case IMB_BLEND_DARKEN: - blend = IMB_BLEND_LIGHTEN; - break; - default: - break; - } - } - - weight = ED_wpaint_blend_tool(blend, weight, paintval, alpha); - - CLAMP(weight, 0.0f, 1.0f); - - return weight; -} - -static float wpaint_clamp_monotonic(float oldval, float curval, float newval) -{ - if (newval < oldval) { - return MIN2(newval, curval); - } - if (newval > oldval) { - return MAX2(newval, curval); - } - return newval; -} - -static float wpaint_undo_lock_relative( - float weight, float old_weight, float locked_weight, float free_weight, bool auto_normalize) -{ - /* In auto-normalize mode, or when there is no unlocked weight, - * compute based on locked weight. */ - if (auto_normalize || free_weight <= 0.0f) { - if (locked_weight < 1.0f - VERTEX_WEIGHT_LOCK_EPSILON) { - weight *= (1.0f - locked_weight); - } - else { - weight = 0; - } - } - else { - /* When dealing with full unlocked weight, don't paint, as it is always displayed as 1. */ - if (old_weight >= free_weight) { - weight = old_weight; - } - /* Try to compute a weight value that would produce the desired effect if normalized. */ - else if (weight < 1.0f) { - weight = weight * (free_weight - old_weight) / (1 - weight); - } - else { - weight = 1.0f; - } - } - - return weight; -} - -/* ----------------------------------------------------- */ - -static void do_weight_paint_normalize_all(MDeformVert *dvert, - const int defbase_tot, - const bool *vgroup_validmap) -{ - float sum = 0.0f, fac; - uint i, tot = 0; - MDeformWeight *dw; - - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - tot++; - sum += dw->weight; - } - } - - if ((tot == 0) || (sum == 1.0f)) { - return; - } - - if (sum != 0.0f) { - fac = 1.0f / sum; - - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - dw->weight *= fac; - } - } - } - else { - /* hrmf, not a factor in this case */ - fac = 1.0f / tot; - - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - dw->weight = fac; - } - } - } -} - -/** - * A version of #do_weight_paint_normalize_all that includes locked weights - * but only changes unlocked weights. - */ -static bool do_weight_paint_normalize_all_locked(MDeformVert *dvert, - const int defbase_tot, - const bool *vgroup_validmap, - const bool *lock_flags) -{ - float sum = 0.0f, fac; - float sum_unlock = 0.0f; - float lock_weight = 0.0f; - uint i, tot = 0; - MDeformWeight *dw; - - if (lock_flags == NULL) { - do_weight_paint_normalize_all(dvert, defbase_tot, vgroup_validmap); - return true; - } - - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - sum += dw->weight; - - if (lock_flags[dw->def_nr]) { - lock_weight += dw->weight; - } - else { - tot++; - sum_unlock += dw->weight; - } - } - } - - if (sum == 1.0f) { - return true; - } - - if (tot == 0) { - return false; - } - - if (lock_weight >= 1.0f - VERTEX_WEIGHT_LOCK_EPSILON) { - /* locked groups make it impossible to fully normalize, - * zero out what we can and return false */ - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - if (lock_flags[dw->def_nr] == false) { - dw->weight = 0.0f; - } - } - } - - return (lock_weight == 1.0f); - } - if (sum_unlock != 0.0f) { - fac = (1.0f - lock_weight) / sum_unlock; - - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - if (lock_flags[dw->def_nr] == false) { - dw->weight *= fac; - /* paranoid but possibly with float error */ - CLAMP(dw->weight, 0.0f, 1.0f); - } - } - } - } - else { - /* hrmf, not a factor in this case */ - fac = (1.0f - lock_weight) / tot; - /* paranoid but possibly with float error */ - CLAMP(fac, 0.0f, 1.0f); - - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && vgroup_validmap[dw->def_nr]) { - if (lock_flags[dw->def_nr] == false) { - dw->weight = fac; - } - } - } - } - - return true; -} - -/** - * \note same as function above except it does a second pass without active group - * if normalize fails with it. - */ -static void do_weight_paint_normalize_all_locked_try_active(MDeformVert *dvert, - const int defbase_tot, - const bool *vgroup_validmap, - const bool *lock_flags, - const bool *lock_with_active) -{ - /* first pass with both active and explicitly locked groups restricted from change */ - - bool success = do_weight_paint_normalize_all_locked( - dvert, defbase_tot, vgroup_validmap, lock_with_active); - - if (!success) { - /** - * Locks prevented the first pass from full completion, - * so remove restriction on active group; e.g: - * - * - With 1.0 weight painted into active: - * nonzero locked weight; first pass zeroed out unlocked weight; scale 1 down to fit. - * - With 0.0 weight painted into active: - * no unlocked groups; first pass did nothing; increase 0 to fit. - */ - do_weight_paint_normalize_all_locked(dvert, defbase_tot, vgroup_validmap, lock_flags); - } -} - -#if 0 /* UNUSED */ -static bool has_unselected_unlocked_bone_group(int defbase_tot, - bool *defbase_sel, - int selected, - const bool *lock_flags, - const bool *vgroup_validmap) -{ - int i; - if (defbase_tot == selected) { - return false; - } - for (i = 0; i < defbase_tot; i++) { - if (vgroup_validmap[i] && !defbase_sel[i] && !lock_flags[i]) { - return true; - } - } - return false; -} -#endif - -static void multipaint_clamp_change(MDeformVert *dvert, - const int defbase_tot, - const bool *defbase_sel, - float *change_p) -{ - int i; - MDeformWeight *dw; - float val; - float change = *change_p; - - /* verify that the change does not cause values exceeding 1 and clamp it */ - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && defbase_sel[dw->def_nr]) { - if (dw->weight) { - val = dw->weight * change; - if (val > 1) { - change = 1.0f / dw->weight; - } - } - } - } - - *change_p = change; -} - -static bool multipaint_verify_change(MDeformVert *dvert, - const int defbase_tot, - float change, - const bool *defbase_sel) -{ - int i; - MDeformWeight *dw; - float val; - - /* in case the change is reduced, you need to recheck - * the earlier values to make sure they are not 0 - * (precision error) */ - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && defbase_sel[dw->def_nr]) { - if (dw->weight) { - val = dw->weight * change; - /* the value should never reach zero while multi-painting if it - * was nonzero beforehand */ - if (val <= 0) { - return false; - } - } - } - } - - return true; -} - -static void multipaint_apply_change(MDeformVert *dvert, - const int defbase_tot, - float change, - const bool *defbase_sel) -{ - int i; - MDeformWeight *dw; - - /* apply the valid change */ - for (i = dvert->totweight, dw = dvert->dw; i != 0; i--, dw++) { - if (dw->def_nr < defbase_tot && defbase_sel[dw->def_nr]) { - if (dw->weight) { - dw->weight = dw->weight * change; - CLAMP(dw->weight, 0.0f, 1.0f); - } - } - } -} - -/** - * Variables stored both for 'active' and 'mirror' sides. - */ -struct WeightPaintGroupData { - /** index of active group or its mirror - * - * - 'active' is always `ob->actdef`. - * - 'mirror' is -1 when 'ME_EDIT_MIRROR_X' flag id disabled, - * otherwise this will be set to the mirror or the active group (if the group isn't mirrored). - */ - int index; - /** lock that includes the 'index' as locked too - * - * - 'active' is set of locked or active/selected groups - * - 'mirror' is set of locked or mirror groups - */ - const bool *lock; -}; - -/* struct to avoid passing many args each call to do_weight_paint_vertex() - * this _could_ be made a part of the operators 'WPaintData' struct, or at - * least a member, but for now keep its own struct, initialized on every - * paint stroke update - campbell */ -typedef struct WeightPaintInfo { - - int defbase_tot; - - /* both must add up to 'defbase_tot' */ - int defbase_tot_sel; - int defbase_tot_unsel; - - struct WeightPaintGroupData active, mirror; - - /* boolean array for locked bones, - * length of defbase_tot */ - const bool *lock_flags; - /* boolean array for selected bones, - * length of defbase_tot, can't be const because of how it's passed */ - const bool *defbase_sel; - /* same as WeightPaintData.vgroup_validmap, - * only added here for convenience */ - const bool *vgroup_validmap; - /* same as WeightPaintData.vgroup_locked/unlocked, - * only added here for convenience */ - const bool *vgroup_locked; - const bool *vgroup_unlocked; - - bool do_flip; - bool do_multipaint; - bool do_auto_normalize; - bool do_lock_relative; - bool is_normalized; - - float brush_alpha_value; /* result of BKE_brush_alpha_get() */ -} WeightPaintInfo; - -static void do_weight_paint_vertex_single( - /* vars which remain the same for every vert */ - const VPaint *wp, - Object *ob, - const WeightPaintInfo *wpi, - /* vars which change on each stroke */ - const uint index, - float alpha, - float paintweight) -{ - Mesh *me = ob->data; - MDeformVert *dv = &me->dvert[index]; - bool topology = (me->editflag & ME_EDIT_MIRROR_TOPO) != 0; - - MDeformWeight *dw; - float weight_prev, weight_cur; - float dw_rel_locked = 0.0f, dw_rel_free = 1.0f; - - /* mirror vars */ - int index_mirr; - int vgroup_mirr; - - MDeformVert *dv_mirr; - MDeformWeight *dw_mirr; - - /* Check if we should mirror vertex groups (X-axis). */ - if (ME_USING_MIRROR_X_VERTEX_GROUPS(me)) { - index_mirr = mesh_get_x_mirror_vert(ob, NULL, index, topology); - vgroup_mirr = wpi->mirror.index; - - /* another possible error - mirror group _and_ active group are the same (which is fine), - * but we also are painting onto a center vertex - this would paint the same weight twice */ - if (index_mirr == index && vgroup_mirr == wpi->active.index) { - index_mirr = vgroup_mirr = -1; - } - } - else { - index_mirr = vgroup_mirr = -1; - } - - /* Check if painting should create new deform weight entries. */ - bool restrict_to_existing = (wp->flag & VP_FLAG_VGROUP_RESTRICT) != 0; - - if (wpi->do_lock_relative || wpi->do_auto_normalize) { - /* Without do_lock_relative only dw_rel_locked is reliable, while dw_rel_free may be fake 0. */ - dw_rel_free = BKE_defvert_total_selected_weight(dv, wpi->defbase_tot, wpi->vgroup_unlocked); - dw_rel_locked = BKE_defvert_total_selected_weight(dv, wpi->defbase_tot, wpi->vgroup_locked); - CLAMP(dw_rel_locked, 0.0f, 1.0f); - - /* Do not create entries if there is not enough free weight to paint. - * This logic is the same as in wpaint_undo_lock_relative and auto-normalize. */ - if (wpi->do_auto_normalize || dw_rel_free <= 0.0f) { - if (dw_rel_locked >= 1.0f - VERTEX_WEIGHT_LOCK_EPSILON) { - restrict_to_existing = true; - } - } - } - - if (restrict_to_existing) { - dw = BKE_defvert_find_index(dv, wpi->active.index); - } - else { - dw = BKE_defvert_ensure_index(dv, wpi->active.index); - } - - if (dw == NULL) { - return; - } - - /* get the mirror def vars */ - if (index_mirr != -1) { - dv_mirr = &me->dvert[index_mirr]; - if (wp->flag & VP_FLAG_VGROUP_RESTRICT) { - dw_mirr = BKE_defvert_find_index(dv_mirr, vgroup_mirr); - - if (dw_mirr == NULL) { - index_mirr = vgroup_mirr = -1; - dv_mirr = NULL; - } - } - else { - if (index != index_mirr) { - dw_mirr = BKE_defvert_ensure_index(dv_mirr, vgroup_mirr); - } - else { - /* dv and dv_mirr are the same */ - int totweight_prev = dv_mirr->totweight; - int dw_offset = (int)(dw - dv_mirr->dw); - dw_mirr = BKE_defvert_ensure_index(dv_mirr, vgroup_mirr); - - /* if we added another, get our old one back */ - if (totweight_prev != dv_mirr->totweight) { - dw = &dv_mirr->dw[dw_offset]; - } - } - } - } - else { - dv_mirr = NULL; - dw_mirr = NULL; - } - - weight_cur = dw->weight; - - /* Handle weight caught up in locked defgroups for Lock Relative. */ - if (wpi->do_lock_relative) { - weight_cur = BKE_defvert_calc_lock_relative_weight(weight_cur, dw_rel_locked, dw_rel_free); - } - - if (!brush_use_accumulate(wp)) { - MDeformVert *dvert_prev = ob->sculpt->mode.wpaint.dvert_prev; - MDeformVert *dv_prev = defweight_prev_init(dvert_prev, me->dvert, index); - if (index_mirr != -1) { - defweight_prev_init(dvert_prev, me->dvert, index_mirr); - } - - weight_prev = BKE_defvert_find_weight(dv_prev, wpi->active.index); - - if (wpi->do_lock_relative) { - weight_prev = BKE_defvert_lock_relative_weight( - weight_prev, dv_prev, wpi->defbase_tot, wpi->vgroup_locked, wpi->vgroup_unlocked); - } - } - else { - weight_prev = weight_cur; - } - - /* If there are no normalize-locks or multipaint, - * then there is no need to run the more complicated checks */ - - { - float new_weight = wpaint_blend( - wp, weight_prev, alpha, paintweight, wpi->brush_alpha_value, wpi->do_flip); - - float weight = wpaint_clamp_monotonic(weight_prev, weight_cur, new_weight); - - /* Undo the lock relative weight correction. */ - if (wpi->do_lock_relative) { - if (index_mirr == index) { - /* When painting a center vertex with X Mirror and L/R pair, - * handle both groups together. This avoids weird fighting - * in the non-normalized weight mode. */ - float orig_weight = dw->weight + dw_mirr->weight; - weight = 0.5f * - wpaint_undo_lock_relative( - weight * 2, orig_weight, dw_rel_locked, dw_rel_free, wpi->do_auto_normalize); - } - else { - weight = wpaint_undo_lock_relative( - weight, dw->weight, dw_rel_locked, dw_rel_free, wpi->do_auto_normalize); - } - - CLAMP(weight, 0.0f, 1.0f); - } - - dw->weight = weight; - - /* WATCH IT: take care of the ordering of applying mirror -> normalize, - * can give wrong results T26193, least confusing if normalize is done last */ - - /* apply mirror */ - if (index_mirr != -1) { - /* copy, not paint again */ - dw_mirr->weight = dw->weight; - } - - /* apply normalize */ - if (wpi->do_auto_normalize) { - /* note on normalize - this used to be applied after painting and normalize all weights, - * in some ways this is good because there is feedback where the more weights involved would - * 'resist' so you couldn't instantly zero out other weights by painting 1.0 on the active. - * - * However this gave a problem since applying mirror, then normalize both verts - * the resulting weight won't match on both sides. - * - * If this 'resisting', slower normalize is nicer, we could call - * do_weight_paint_normalize_all() and only use... - * do_weight_paint_normalize_all_active() when normalizing the mirror vertex. - * - campbell - */ - do_weight_paint_normalize_all_locked_try_active( - dv, wpi->defbase_tot, wpi->vgroup_validmap, wpi->lock_flags, wpi->active.lock); - - if (index_mirr != -1) { - /* only normalize if this is not a center vertex, - * else we get a conflict, normalizing twice */ - if (index != index_mirr) { - do_weight_paint_normalize_all_locked_try_active( - dv_mirr, wpi->defbase_tot, wpi->vgroup_validmap, wpi->lock_flags, wpi->mirror.lock); - } - else { - /* This case accounts for: - * - Painting onto a center vertex of a mesh. - * - X-mirror is enabled. - * - Auto normalize is enabled. - * - The group you are painting onto has a L / R version. - * - * We want L/R vgroups to have the same weight but this can't be if both are over 0.5, - * We _could_ have special check for that, but this would need its own - * normalize function which holds 2 groups from changing at once. - * - * So! just balance out the 2 weights, it keeps them equal and everything normalized. - * - * While it won't hit the desired weight immediately as the user waggles their mouse, - * constant painting and re-normalizing will get there. this is also just simpler logic. - * - campbell */ - dw_mirr->weight = dw->weight = (dw_mirr->weight + dw->weight) * 0.5f; - } - } - } - } -} - -static void do_weight_paint_vertex_multi( - /* vars which remain the same for every vert */ - const VPaint *wp, - Object *ob, - const WeightPaintInfo *wpi, - /* vars which change on each stroke */ - const uint index, - float alpha, - float paintweight) -{ - Mesh *me = ob->data; - MDeformVert *dv = &me->dvert[index]; - bool topology = (me->editflag & ME_EDIT_MIRROR_TOPO) != 0; - - /* mirror vars */ - int index_mirr = -1; - MDeformVert *dv_mirr = NULL; - - /* weights */ - float curw, curw_real, oldw, neww, change, curw_mirr, change_mirr; - float dw_rel_free, dw_rel_locked; - - /* Check if we should mirror vertex groups (X-axis). */ - if (ME_USING_MIRROR_X_VERTEX_GROUPS(me)) { - index_mirr = mesh_get_x_mirror_vert(ob, NULL, index, topology); - - if (!ELEM(index_mirr, -1, index)) { - dv_mirr = &me->dvert[index_mirr]; - } - else { - index_mirr = -1; - } - } - - /* compute weight change by applying the brush to average or sum of group weights */ - curw = curw_real = BKE_defvert_multipaint_collective_weight( - dv, wpi->defbase_tot, wpi->defbase_sel, wpi->defbase_tot_sel, wpi->is_normalized); - - if (curw == 0.0f) { - /* NOTE: no weight to assign to this vertex, could add all groups? */ - return; - } - - /* Handle weight caught up in locked defgroups for Lock Relative. */ - if (wpi->do_lock_relative) { - dw_rel_free = BKE_defvert_total_selected_weight(dv, wpi->defbase_tot, wpi->vgroup_unlocked); - dw_rel_locked = BKE_defvert_total_selected_weight(dv, wpi->defbase_tot, wpi->vgroup_locked); - CLAMP(dw_rel_locked, 0.0f, 1.0f); - - curw = BKE_defvert_calc_lock_relative_weight(curw, dw_rel_locked, dw_rel_free); - } - - if (!brush_use_accumulate(wp)) { - MDeformVert *dvert_prev = ob->sculpt->mode.wpaint.dvert_prev; - MDeformVert *dv_prev = defweight_prev_init(dvert_prev, me->dvert, index); - if (index_mirr != -1) { - defweight_prev_init(dvert_prev, me->dvert, index_mirr); - } - - oldw = BKE_defvert_multipaint_collective_weight( - dv_prev, wpi->defbase_tot, wpi->defbase_sel, wpi->defbase_tot_sel, wpi->is_normalized); - - if (wpi->do_lock_relative) { - oldw = BKE_defvert_lock_relative_weight( - oldw, dv_prev, wpi->defbase_tot, wpi->vgroup_locked, wpi->vgroup_unlocked); - } - } - else { - oldw = curw; - } - - neww = wpaint_blend(wp, oldw, alpha, paintweight, wpi->brush_alpha_value, wpi->do_flip); - neww = wpaint_clamp_monotonic(oldw, curw, neww); - - if (wpi->do_lock_relative) { - neww = wpaint_undo_lock_relative( - neww, curw_real, dw_rel_locked, dw_rel_free, wpi->do_auto_normalize); - } - - change = neww / curw_real; - - /* verify for all groups that 0 < result <= 1 */ - multipaint_clamp_change(dv, wpi->defbase_tot, wpi->defbase_sel, &change); - - if (dv_mirr != NULL) { - curw_mirr = BKE_defvert_multipaint_collective_weight( - dv_mirr, wpi->defbase_tot, wpi->defbase_sel, wpi->defbase_tot_sel, wpi->is_normalized); - - if (curw_mirr == 0.0f) { - /* can't mirror into a zero weight vertex */ - dv_mirr = NULL; - } - else { - /* mirror is changed to achieve the same collective weight value */ - float orig = change_mirr = curw_real * change / curw_mirr; - - multipaint_clamp_change(dv_mirr, wpi->defbase_tot, wpi->defbase_sel, &change_mirr); - - if (!multipaint_verify_change(dv_mirr, wpi->defbase_tot, change_mirr, wpi->defbase_sel)) { - return; - } - - change *= change_mirr / orig; - } - } - - if (!multipaint_verify_change(dv, wpi->defbase_tot, change, wpi->defbase_sel)) { - return; - } - - /* apply validated change to vertex and mirror */ - multipaint_apply_change(dv, wpi->defbase_tot, change, wpi->defbase_sel); - - if (dv_mirr != NULL) { - multipaint_apply_change(dv_mirr, wpi->defbase_tot, change_mirr, wpi->defbase_sel); - } - - /* normalize */ - if (wpi->do_auto_normalize) { - do_weight_paint_normalize_all_locked_try_active( - dv, wpi->defbase_tot, wpi->vgroup_validmap, wpi->lock_flags, wpi->active.lock); - - if (dv_mirr != NULL) { - do_weight_paint_normalize_all_locked_try_active( - dv_mirr, wpi->defbase_tot, wpi->vgroup_validmap, wpi->lock_flags, wpi->active.lock); - } - } -} - -static void do_weight_paint_vertex( - /* vars which remain the same for every vert */ - const VPaint *wp, - Object *ob, - const WeightPaintInfo *wpi, - /* vars which change on each stroke */ - const uint index, - float alpha, - float paintweight) -{ - if (wpi->do_multipaint) { - do_weight_paint_vertex_multi(wp, ob, wpi, index, alpha, paintweight); - } - else { - do_weight_paint_vertex_single(wp, ob, wpi, index, alpha, paintweight); - } -} - -/* Toggle operator for turning vertex paint mode on or off (copied from sculpt.c) */ -static void vertex_paint_init_session(Depsgraph *depsgraph, - Scene *scene, - Object *ob, - eObjectMode object_mode) -{ - /* Create persistent sculpt mode data */ - BKE_sculpt_toolsettings_data_ensure(scene); - - BLI_assert(ob->sculpt == NULL); - ob->sculpt = MEM_callocN(sizeof(SculptSession), "sculpt session"); - ob->sculpt->mode_type = object_mode; - BKE_sculpt_update_object_for_edit(depsgraph, ob, false, false, false); -} - -static void vertex_paint_init_stroke(Depsgraph *depsgraph, Object *ob) -{ - BKE_sculpt_update_object_for_edit(depsgraph, ob, false, false, false); -} - -static void vertex_paint_init_session_data(const ToolSettings *ts, Object *ob) -{ - /* Create maps */ - struct SculptVertexPaintGeomMap *gmap = NULL; - if (ob->mode == OB_MODE_VERTEX_PAINT) { - gmap = &ob->sculpt->mode.vpaint.gmap; - BLI_assert(ob->sculpt->mode_type == OB_MODE_VERTEX_PAINT); - } - else if (ob->mode == OB_MODE_WEIGHT_PAINT) { - gmap = &ob->sculpt->mode.wpaint.gmap; - BLI_assert(ob->sculpt->mode_type == OB_MODE_WEIGHT_PAINT); - } - else { - ob->sculpt->mode_type = 0; - BLI_assert(0); - return; - } - - Mesh *me = ob->data; - - if (gmap->vert_to_loop == NULL) { - gmap->vert_map_mem = NULL; - gmap->vert_to_loop = NULL; - gmap->poly_map_mem = NULL; - gmap->vert_to_poly = NULL; - BKE_mesh_vert_loop_map_create(&gmap->vert_to_loop, - &gmap->vert_map_mem, - me->mpoly, - me->mloop, - me->totvert, - me->totpoly, - me->totloop); - BKE_mesh_vert_poly_map_create(&gmap->vert_to_poly, - &gmap->poly_map_mem, - me->mpoly, - me->mloop, - me->totvert, - me->totpoly, - me->totloop); - } - - /* Create average brush arrays */ - if (ob->mode == OB_MODE_VERTEX_PAINT) { - if (!brush_use_accumulate(ts->vpaint)) { - if (ob->sculpt->mode.vpaint.previous_color == NULL) { - ob->sculpt->mode.vpaint.previous_color = MEM_callocN(me->totloop * sizeof(uint), __func__); - } - } - else { - MEM_SAFE_FREE(ob->sculpt->mode.vpaint.previous_color); - } - } - else if (ob->mode == OB_MODE_WEIGHT_PAINT) { - if (!brush_use_accumulate(ts->wpaint)) { - if (ob->sculpt->mode.wpaint.alpha_weight == NULL) { - ob->sculpt->mode.wpaint.alpha_weight = MEM_callocN(me->totvert * sizeof(float), __func__); - } - if (ob->sculpt->mode.wpaint.dvert_prev == NULL) { - ob->sculpt->mode.wpaint.dvert_prev = MEM_callocN(me->totvert * sizeof(MDeformVert), - __func__); - MDeformVert *dv = ob->sculpt->mode.wpaint.dvert_prev; - for (int i = 0; i < me->totvert; i++, dv++) { - /* Use to show this isn't initialized, never apply to the mesh data. */ - dv->flag = 1; - } - } - } - else { - MEM_SAFE_FREE(ob->sculpt->mode.wpaint.alpha_weight); - if (ob->sculpt->mode.wpaint.dvert_prev != NULL) { - BKE_defvert_array_free_elems(ob->sculpt->mode.wpaint.dvert_prev, me->totvert); - MEM_freeN(ob->sculpt->mode.wpaint.dvert_prev); - ob->sculpt->mode.wpaint.dvert_prev = NULL; - } - } - } -} - -/** \} */ - -/* -------------------------------------------------------------------- */ -/** \name Enter Vertex/Weight Paint Mode - * \{ */ - -static void ed_vwpaintmode_enter_generic( - Main *bmain, Depsgraph *depsgraph, Scene *scene, Object *ob, const eObjectMode mode_flag) -{ - ob->mode |= mode_flag; - Mesh *me = BKE_mesh_from_object(ob); - - /* Same as sculpt mode, make sure we don't have cached derived mesh which - * points to freed arrays. - */ - BKE_object_free_derived_caches(ob); - - if (mode_flag == OB_MODE_VERTEX_PAINT) { - const ePaintMode paint_mode = PAINT_MODE_VERTEX; - ED_mesh_color_ensure(me, NULL); - - BKE_paint_ensure(scene->toolsettings, (Paint **)&scene->toolsettings->vpaint); - Paint *paint = BKE_paint_get_active_from_paintmode(scene, paint_mode); - paint_cursor_start(paint, vertex_paint_poll); - BKE_paint_init(bmain, scene, paint_mode, PAINT_CURSOR_VERTEX_PAINT); - } - else if (mode_flag == OB_MODE_WEIGHT_PAINT) { - const ePaintMode paint_mode = PAINT_MODE_WEIGHT; - - BKE_paint_ensure(scene->toolsettings, (Paint **)&scene->toolsettings->wpaint); - Paint *paint = BKE_paint_get_active_from_paintmode(scene, paint_mode); - paint_cursor_start(paint, weight_paint_poll); - BKE_paint_init(bmain, scene, paint_mode, PAINT_CURSOR_WEIGHT_PAINT); - - /* weight paint specific */ - ED_mesh_mirror_spatial_table_end(ob); - ED_vgroup_sync_from_pose(ob); - } - else { - BLI_assert(0); - } - - /* Create vertex/weight paint mode session data */ - if (ob->sculpt) { - if (ob->sculpt->cache) { - SCULPT_cache_free(ob->sculpt->cache); - ob->sculpt->cache = NULL; - } - BKE_sculptsession_free(ob); - } - - vertex_paint_init_session(depsgraph, scene, ob, mode_flag); - - /* Flush object mode. */ - DEG_id_tag_update(&ob->id, ID_RECALC_COPY_ON_WRITE); -} - -void ED_object_vpaintmode_enter_ex(Main *bmain, Depsgraph *depsgraph, Scene *scene, Object *ob) -{ - ed_vwpaintmode_enter_generic(bmain, depsgraph, scene, ob, OB_MODE_VERTEX_PAINT); -} -void ED_object_vpaintmode_enter(struct bContext *C, Depsgraph *depsgraph) -{ - Main *bmain = CTX_data_main(C); - Scene *scene = CTX_data_scene(C); - Object *ob = CTX_data_active_object(C); - ED_object_vpaintmode_enter_ex(bmain, depsgraph, scene, ob); -} - -void ED_object_wpaintmode_enter_ex(Main *bmain, Depsgraph *depsgraph, Scene *scene, Object *ob) -{ - ed_vwpaintmode_enter_generic(bmain, depsgraph, scene, ob, OB_MODE_WEIGHT_PAINT); -} -void ED_object_wpaintmode_enter(struct bContext *C, Depsgraph *depsgraph) -{ - Main *bmain = CTX_data_main(C); - Scene *scene = CTX_data_scene(C); - Object *ob = CTX_data_active_object(C); - ED_object_wpaintmode_enter_ex(bmain, depsgraph, scene, ob); -} - -/** \} */ - -/* -------------------------------------------------------------------- */ -/** \name Exit Vertex/Weight Paint Mode - * \{ */ - -static void ed_vwpaintmode_exit_generic(Object *ob, const eObjectMode mode_flag) -{ - Mesh *me = BKE_mesh_from_object(ob); - ob->mode &= ~mode_flag; - - if (mode_flag == OB_MODE_VERTEX_PAINT) { - if (me->editflag & ME_EDIT_PAINT_FACE_SEL) { - BKE_mesh_flush_select_from_polys(me); - } - else if (me->editflag & ME_EDIT_PAINT_VERT_SEL) { - BKE_mesh_flush_select_from_verts(me); - } - } - else if (mode_flag == OB_MODE_WEIGHT_PAINT) { - if (me->editflag & ME_EDIT_PAINT_VERT_SEL) { - BKE_mesh_flush_select_from_verts(me); - } - else if (me->editflag & ME_EDIT_PAINT_FACE_SEL) { - BKE_mesh_flush_select_from_polys(me); - } - } - else { - BLI_assert(0); - } - - /* If the cache is not released by a cancel or a done, free it now. */ - if (ob->sculpt && ob->sculpt->cache) { - SCULPT_cache_free(ob->sculpt->cache); - ob->sculpt->cache = NULL; - } - - BKE_sculptsession_free(ob); - - paint_cursor_delete_textures(); - - if (mode_flag == OB_MODE_WEIGHT_PAINT) { - ED_mesh_mirror_spatial_table_end(ob); - ED_mesh_mirror_topo_table_end(ob); - } - - /* Never leave derived meshes behind. */ - BKE_object_free_derived_caches(ob); - - /* Flush object mode. */ - DEG_id_tag_update(&ob->id, ID_RECALC_COPY_ON_WRITE); -} - -void ED_object_vpaintmode_exit_ex(Object *ob) -{ - ed_vwpaintmode_exit_generic(ob, OB_MODE_VERTEX_PAINT); -} -void ED_object_vpaintmode_exit(struct bContext *C) -{ - Object *ob = CTX_data_active_object(C); - ED_object_vpaintmode_exit_ex(ob); -} - -void ED_object_wpaintmode_exit_ex(Object *ob) -{ - ed_vwpaintmode_exit_generic(ob, OB_MODE_WEIGHT_PAINT); -} -void ED_object_wpaintmode_exit(struct bContext *C) -{ - Object *ob = CTX_data_active_object(C); - ED_object_wpaintmode_exit_ex(ob); -} - -/** \} */ - -/* -------------------------------------------------------------------- */ -/** \name Toggle Weight Paint Operator - * \{ */ - -/** - * \note Keep in sync with #vpaint_mode_toggle_exec - */ -static int wpaint_mode_toggle_exec(bContext *C, wmOperator *op) -{ - Main *bmain = CTX_data_main(C); - struct wmMsgBus *mbus = CTX_wm_message_bus(C); - Object *ob = CTX_data_active_object(C); - const int mode_flag = OB_MODE_WEIGHT_PAINT; - const bool is_mode_set = (ob->mode & mode_flag) != 0; - Scene *scene = CTX_data_scene(C); - ToolSettings *ts = scene->toolsettings; - - if (!is_mode_set) { - if (!ED_object_mode_compat_set(C, ob, mode_flag, op->reports)) { - return OPERATOR_CANCELLED; - } - } - - Mesh *me = BKE_mesh_from_object(ob); - - if (is_mode_set) { - ED_object_wpaintmode_exit_ex(ob); - } - else { - Depsgraph *depsgraph = CTX_data_depsgraph_on_load(C); - if (depsgraph) { - depsgraph = CTX_data_ensure_evaluated_depsgraph(C); - } - ED_object_wpaintmode_enter_ex(bmain, depsgraph, scene, ob); - BKE_paint_toolslots_brush_validate(bmain, &ts->wpaint->paint); - } - - /* Prepare armature posemode. */ - ED_object_posemode_set_for_weight_paint(C, bmain, ob, is_mode_set); - - /* Weight-paint works by overriding colors in mesh, - * so need to make sure we recalculate on enter and - * exit (exit needs doing regardless because we - * should re-deform). - */ - DEG_id_tag_update(&me->id, 0); - - WM_event_add_notifier(C, NC_SCENE | ND_MODE, scene); - - WM_msg_publish_rna_prop(mbus, &ob->id, ob, Object, mode); - - WM_toolsystem_update_from_context_view3d(C); - - return OPERATOR_FINISHED; -} - -static bool paint_mode_toggle_poll_test(bContext *C) -{ - Object *ob = CTX_data_active_object(C); - if (ob == NULL || ob->type != OB_MESH) { - return false; - } - if (!ob->data || ID_IS_LINKED(ob->data) || ID_IS_OVERRIDE_LIBRARY(ob->data)) { - return false; - } - return true; -} - -void PAINT_OT_weight_paint_toggle(wmOperatorType *ot) -{ - - /* identifiers */ - ot->name = "Weight Paint Mode"; - ot->idname = "PAINT_OT_weight_paint_toggle"; - ot->description = "Toggle weight paint mode in 3D view"; - - /* api callbacks */ - ot->exec = wpaint_mode_toggle_exec; - ot->poll = paint_mode_toggle_poll_test; - - /* flags */ - ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; -} - -/** \} */ - -/* -------------------------------------------------------------------- */ -/** \name Weight Paint Operator - * \{ */ - -struct WPaintData { - ViewContext vc; - struct NormalAnglePrecalc normal_angle_precalc; - - struct WeightPaintGroupData active, mirror; - - /* variables for auto normalize */ - const bool *vgroup_validmap; /* stores if vgroups tie to deforming bones or not */ - const bool *lock_flags; - const bool *vgroup_locked; /* mask of locked defbones */ - const bool *vgroup_unlocked; /* mask of unlocked defbones */ - - /* variables for multipaint */ - const bool *defbase_sel; /* set of selected groups */ - int defbase_tot_sel; /* number of selected groups */ - bool do_multipaint; /* true if multipaint enabled and multiple groups selected */ - bool do_lock_relative; - - int defbase_tot; - - /* original weight values for use in blur/smear */ - float *precomputed_weight; - bool precomputed_weight_ready; -}; - -static void smooth_brush_toggle_on(const bContext *C, Paint *paint, StrokeCache *cache) -{ - Scene *scene = CTX_data_scene(C); - Brush *brush = paint->brush; - int cur_brush_size = BKE_brush_size_get(scene, brush); - - BLI_strncpy( - cache->saved_active_brush_name, brush->id.name + 2, sizeof(cache->saved_active_brush_name)); - - /* Switch to the blur (smooth) brush. */ - brush = BKE_paint_toolslots_brush_get(paint, WPAINT_TOOL_BLUR); - if (brush) { - BKE_paint_brush_set(paint, brush); - cache->saved_smooth_size = BKE_brush_size_get(scene, brush); - BKE_brush_size_set(scene, brush, cur_brush_size); - BKE_curvemapping_init(brush->curve); - } -} - -static void smooth_brush_toggle_off(const bContext *C, Paint *paint, StrokeCache *cache) -{ - Main *bmain = CTX_data_main(C); - Scene *scene = CTX_data_scene(C); - Brush *brush = BKE_paint_brush(paint); - /* The current brush should match with what we have stored in the cache. */ - BLI_assert(brush == cache->brush); - - /* Try to switch back to the saved/previous brush. */ - BKE_brush_size_set(scene, brush, cache->saved_smooth_size); - brush = (Brush *)BKE_libblock_find_name(bmain, ID_BR, cache->saved_active_brush_name); - if (brush) { - BKE_paint_brush_set(paint, brush); - } -} - -/* Initialize the stroke cache invariants from operator properties */ -static void vwpaint_update_cache_invariants( - bContext *C, VPaint *vp, SculptSession *ss, wmOperator *op, const float mouse[2]) -{ - StrokeCache *cache; - Scene *scene = CTX_data_scene(C); - UnifiedPaintSettings *ups = &CTX_data_tool_settings(C)->unified_paint_settings; - ViewContext *vc = paint_stroke_view_context(op->customdata); - Object *ob = CTX_data_active_object(C); - float mat[3][3]; - float view_dir[3] = {0.0f, 0.0f, 1.0f}; - int mode; - - /* VW paint needs to allocate stroke cache before update is called. */ - if (!ss->cache) { - cache = MEM_callocN(sizeof(StrokeCache), "stroke cache"); - ss->cache = cache; - } - else { - cache = ss->cache; - } - - /* Initial mouse location */ - if (mouse) { - copy_v2_v2(cache->initial_mouse, mouse); - } - else { - zero_v2(cache->initial_mouse); - } - - mode = RNA_enum_get(op->ptr, "mode"); - cache->invert = mode == BRUSH_STROKE_INVERT; - cache->alt_smooth = mode == BRUSH_STROKE_SMOOTH; - /* not very nice, but with current events system implementation - * we can't handle brush appearance inversion hotkey separately (sergey) */ - if (cache->invert) { - ups->draw_inverted = true; - } - else { - ups->draw_inverted = false; - } - - if (cache->alt_smooth) { - smooth_brush_toggle_on(C, &vp->paint, cache); - } - - copy_v2_v2(cache->mouse, cache->initial_mouse); - Brush *brush = vp->paint.brush; - /* Truly temporary data that isn't stored in properties */ - cache->vc = vc; - cache->brush = brush; - cache->first_time = 1; - - /* cache projection matrix */ - ED_view3d_ob_project_mat_get(cache->vc->rv3d, ob, cache->projection_mat); - - invert_m4_m4(ob->imat, ob->obmat); - copy_m3_m4(mat, cache->vc->rv3d->viewinv); - mul_m3_v3(mat, view_dir); - copy_m3_m4(mat, ob->imat); - mul_m3_v3(mat, view_dir); - normalize_v3_v3(cache->true_view_normal, view_dir); - - copy_v3_v3(cache->view_normal, cache->true_view_normal); - cache->bstrength = BKE_brush_alpha_get(scene, brush); - cache->is_last_valid = false; -} - -/* Initialize the stroke cache variants from operator properties */ -static void vwpaint_update_cache_variants(bContext *C, VPaint *vp, Object *ob, PointerRNA *ptr) -{ - Scene *scene = CTX_data_scene(C); - SculptSession *ss = ob->sculpt; - StrokeCache *cache = ss->cache; - Brush *brush = BKE_paint_brush(&vp->paint); - - /* This effects the actual brush radius, so things farther away - * are compared with a larger radius and vice versa. */ - if (cache->first_time) { - RNA_float_get_array(ptr, "location", cache->true_location); - } - - RNA_float_get_array(ptr, "mouse", cache->mouse); - - /* XXX: Use pressure value from first brush step for brushes which don't - * support strokes (grab, thumb). They depends on initial state and - * brush coord/pressure/etc. - * It's more an events design issue, which doesn't split coordinate/pressure/angle - * changing events. We should avoid this after events system re-design */ - if (paint_supports_dynamic_size(brush, PAINT_MODE_SCULPT) || cache->first_time) { - cache->pressure = RNA_float_get(ptr, "pressure"); - } - - /* Truly temporary data that isn't stored in properties */ - if (cache->first_time) { - cache->initial_radius = paint_calc_object_space_radius( - cache->vc, cache->true_location, BKE_brush_size_get(scene, brush)); - BKE_brush_unprojected_radius_set(scene, brush, cache->initial_radius); - } - - if (BKE_brush_use_size_pressure(brush) && - paint_supports_dynamic_size(brush, PAINT_MODE_SCULPT)) { - cache->radius = cache->initial_radius * cache->pressure; - } - else { - cache->radius = cache->initial_radius; - } - - cache->radius_squared = cache->radius * cache->radius; - - if (ss->pbvh) { - BKE_pbvh_update_bounds(ss->pbvh, PBVH_UpdateRedraw | PBVH_UpdateBB); - } -} - -static bool wpaint_stroke_test_start(bContext *C, wmOperator *op, const float mouse[2]) -{ - Scene *scene = CTX_data_scene(C); - struct PaintStroke *stroke = op->customdata; - ToolSettings *ts = scene->toolsettings; - Object *ob = CTX_data_active_object(C); - Mesh *me = BKE_mesh_from_object(ob); - struct WPaintData *wpd; - struct WPaintVGroupIndex vgroup_index; - int defbase_tot, defbase_tot_sel; - bool *defbase_sel; - SculptSession *ss = ob->sculpt; - VPaint *vp = CTX_data_tool_settings(C)->wpaint; - Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C); - - if (ED_wpaint_ensure_data(C, op->reports, WPAINT_ENSURE_MIRROR, &vgroup_index) == false) { - return false; - } - - { - /* check if we are attempting to paint onto a locked vertex group, - * and other options disallow it from doing anything useful */ - bDeformGroup *dg; - dg = BLI_findlink(&me->vertex_group_names, vgroup_index.active); - if (dg->flag & DG_LOCK_WEIGHT) { - BKE_report(op->reports, RPT_WARNING, "Active group is locked, aborting"); - return false; - } - if (vgroup_index.mirror != -1) { - dg = BLI_findlink(&me->vertex_group_names, vgroup_index.mirror); - if (dg->flag & DG_LOCK_WEIGHT) { - BKE_report(op->reports, RPT_WARNING, "Mirror group is locked, aborting"); - return false; - } - } - } - - /* check that multipaint groups are unlocked */ - defbase_tot = BLI_listbase_count(&me->vertex_group_names); - defbase_sel = BKE_object_defgroup_selected_get(ob, defbase_tot, &defbase_tot_sel); - - if (ts->multipaint && defbase_tot_sel > 1) { - int i; - bDeformGroup *dg; - - if (ME_USING_MIRROR_X_VERTEX_GROUPS(me)) { - BKE_object_defgroup_mirror_selection( - ob, defbase_tot, defbase_sel, defbase_sel, &defbase_tot_sel); - } - - for (i = 0; i < defbase_tot; i++) { - if (defbase_sel[i]) { - dg = BLI_findlink(&me->vertex_group_names, i); - if (dg->flag & DG_LOCK_WEIGHT) { - BKE_report(op->reports, RPT_WARNING, "Multipaint group is locked, aborting"); - MEM_freeN(defbase_sel); - return false; - } - } - } - } - - /* ALLOCATIONS! no return after this line */ - /* make mode data storage */ - wpd = MEM_callocN(sizeof(struct WPaintData), "WPaintData"); - paint_stroke_set_mode_data(stroke, wpd); - ED_view3d_viewcontext_init(C, &wpd->vc, depsgraph); - view_angle_limits_init(&wpd->normal_angle_precalc, - vp->paint.brush->falloff_angle, - (vp->paint.brush->flag & BRUSH_FRONTFACE_FALLOFF) != 0); - - wpd->active.index = vgroup_index.active; - wpd->mirror.index = vgroup_index.mirror; - - /* multipaint */ - wpd->defbase_tot = defbase_tot; - wpd->defbase_sel = defbase_sel; - wpd->defbase_tot_sel = defbase_tot_sel > 1 ? defbase_tot_sel : 1; - wpd->do_multipaint = (ts->multipaint && defbase_tot_sel > 1); - - /* set up auto-normalize, and generate map for detecting which - * vgroups affect deform bones */ - wpd->lock_flags = BKE_object_defgroup_lock_flags_get(ob, wpd->defbase_tot); - if (ts->auto_normalize || ts->multipaint || wpd->lock_flags || ts->wpaint_lock_relative) { - wpd->vgroup_validmap = BKE_object_defgroup_validmap_get(ob, wpd->defbase_tot); - } - - /* Compute the set of all locked deform groups when Lock Relative is active. */ - if (ts->wpaint_lock_relative && - BKE_object_defgroup_check_lock_relative( - wpd->lock_flags, wpd->vgroup_validmap, wpd->active.index) && - (!wpd->do_multipaint || BKE_object_defgroup_check_lock_relative_multi( - defbase_tot, wpd->lock_flags, defbase_sel, defbase_tot_sel))) { - wpd->do_lock_relative = true; - } - - if (wpd->do_lock_relative || (ts->auto_normalize && wpd->lock_flags && !wpd->do_multipaint)) { - bool *unlocked = MEM_dupallocN(wpd->vgroup_validmap); - - if (wpd->lock_flags) { - bool *locked = MEM_mallocN(sizeof(bool) * wpd->defbase_tot, __func__); - BKE_object_defgroup_split_locked_validmap( - wpd->defbase_tot, wpd->lock_flags, wpd->vgroup_validmap, locked, unlocked); - wpd->vgroup_locked = locked; - } - - wpd->vgroup_unlocked = unlocked; - } - - if (wpd->do_multipaint && ts->auto_normalize) { - bool *tmpflags; - tmpflags = MEM_mallocN(sizeof(bool) * defbase_tot, __func__); - if (wpd->lock_flags) { - BLI_array_binary_or(tmpflags, wpd->defbase_sel, wpd->lock_flags, wpd->defbase_tot); - } - else { - memcpy(tmpflags, wpd->defbase_sel, sizeof(*tmpflags) * wpd->defbase_tot); - } - wpd->active.lock = tmpflags; - } - else if (ts->auto_normalize) { - bool *tmpflags; - - tmpflags = wpd->lock_flags ? MEM_dupallocN(wpd->lock_flags) : - MEM_callocN(sizeof(bool) * defbase_tot, __func__); - tmpflags[wpd->active.index] = true; - wpd->active.lock = tmpflags; - - tmpflags = wpd->lock_flags ? MEM_dupallocN(wpd->lock_flags) : - MEM_callocN(sizeof(bool) * defbase_tot, __func__); - tmpflags[(wpd->mirror.index != -1) ? wpd->mirror.index : wpd->active.index] = true; - wpd->mirror.lock = tmpflags; - } - - /* If not previously created, create vertex/weight paint mode session data */ - vertex_paint_init_stroke(depsgraph, ob); - vwpaint_update_cache_invariants(C, vp, ss, op, mouse); - vertex_paint_init_session_data(ts, ob); - - if (ELEM(vp->paint.brush->weightpaint_tool, WPAINT_TOOL_SMEAR, WPAINT_TOOL_BLUR)) { - wpd->precomputed_weight = MEM_mallocN(sizeof(float) * me->totvert, __func__); - } - - if (ob->sculpt->mode.wpaint.dvert_prev != NULL) { - MDeformVert *dv = ob->sculpt->mode.wpaint.dvert_prev; - for (int i = 0; i < me->totvert; i++, dv++) { - /* Use to show this isn't initialized, never apply to the mesh data. */ - dv->flag = 1; - } - } - - return true; -} - -static void get_brush_alpha_data(const Scene *scene, - const SculptSession *ss, - const Brush *brush, - float *r_brush_size_pressure, - float *r_brush_alpha_value, - float *r_brush_alpha_pressure) -{ - *r_brush_size_pressure = BKE_brush_size_get(scene, brush) * - (BKE_brush_use_size_pressure(brush) ? ss->cache->pressure : 1.0f); - *r_brush_alpha_value = BKE_brush_alpha_get(scene, brush); - *r_brush_alpha_pressure = (BKE_brush_use_alpha_pressure(brush) ? ss->cache->pressure : 1.0f); -} - -static float wpaint_get_active_weight(const MDeformVert *dv, const WeightPaintInfo *wpi) -{ - float weight; - - if (wpi->do_multipaint) { - weight = BKE_defvert_multipaint_collective_weight( - dv, wpi->defbase_tot, wpi->defbase_sel, wpi->defbase_tot_sel, wpi->is_normalized); - } - else { - weight = BKE_defvert_find_weight(dv, wpi->active.index); - } - - if (wpi->do_lock_relative) { - weight = BKE_defvert_lock_relative_weight( - weight, dv, wpi->defbase_tot, wpi->vgroup_locked, wpi->vgroup_unlocked); - } - - CLAMP(weight, 0.0f, 1.0f); - return weight; -} - -static void do_wpaint_precompute_weight_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - const MDeformVert *dv = &data->me->dvert[n]; - - data->wpd->precomputed_weight[n] = wpaint_get_active_weight(dv, data->wpi); -} - -static void precompute_weight_values( - bContext *C, Object *ob, Brush *brush, struct WPaintData *wpd, WeightPaintInfo *wpi, Mesh *me) -{ - if (wpd->precomputed_weight_ready && !brush_use_accumulate_ex(brush, ob->mode)) { - return; - } - - /* threaded loop over vertices */ - SculptThreadedTaskData data = { - .C = C, - .ob = ob, - .wpd = wpd, - .wpi = wpi, - .me = me, - }; - - TaskParallelSettings settings; - BLI_parallel_range_settings_defaults(&settings); - BLI_task_parallel_range(0, me->totvert, &data, do_wpaint_precompute_weight_cb_ex, &settings); - - wpd->precomputed_weight_ready = true; -} - -static void do_wpaint_brush_blur_task_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - const struct SculptVertexPaintGeomMap *gmap = &ss->mode.wpaint.gmap; - - const Brush *brush = data->brush; - const StrokeCache *cache = ss->cache; - Scene *scene = CTX_data_scene(data->C); - - float brush_size_pressure, brush_alpha_value, brush_alpha_pressure; - get_brush_alpha_data( - scene, ss, brush, &brush_size_pressure, &brush_alpha_value, &brush_alpha_pressure); - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - const bool use_vert_sel = (data->me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - /* For grid based pbvh, take the vert whose loop corresponds to the current grid. - * Otherwise, take the current vert. */ - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - const char v_flag = data->me->mvert[v_index].flag; - /* If the vertex is selected */ - if (!(use_face_sel || use_vert_sel) || v_flag & SELECT) { - /* Get the average poly weight */ - int total_hit_loops = 0; - float weight_final = 0.0f; - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - const int p_index = gmap->vert_to_poly[v_index].indices[j]; - const MPoly *mp = &data->me->mpoly[p_index]; - - total_hit_loops += mp->totloop; - for (int k = 0; k < mp->totloop; k++) { - const int l_index = mp->loopstart + k; - const MLoop *ml = &data->me->mloop[l_index]; - weight_final += data->wpd->precomputed_weight[ml->v]; - } - } - - /* Apply the weight to the vertex. */ - if (total_hit_loops != 0) { - float brush_strength = cache->bstrength; - const float angle_cos = (use_normal && vd.no) ? - dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (((brush->flag & BRUSH_FRONTFACE) == 0 || (angle_cos > 0.0f)) && - ((brush->flag & BRUSH_FRONTFACE_FALLOFF) == 0 || - view_angle_limits_apply_falloff( - &data->wpd->normal_angle_precalc, angle_cos, &brush_strength))) { - const float brush_fade = BKE_brush_curve_strength( - brush, sqrtf(test.dist), cache->radius); - const float final_alpha = brush_fade * brush_strength * grid_alpha * - brush_alpha_pressure; - - if ((brush->flag & BRUSH_ACCUMULATE) == 0) { - if (ss->mode.wpaint.alpha_weight[v_index] < final_alpha) { - ss->mode.wpaint.alpha_weight[v_index] = final_alpha; - } - else { - continue; - } - } - - weight_final /= total_hit_loops; - /* Only paint visible verts */ - do_weight_paint_vertex( - data->vp, data->ob, data->wpi, v_index, final_alpha, weight_final); - } - } - } - } - } - BKE_pbvh_vertex_iter_end; -} - -static void do_wpaint_brush_smear_task_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - const struct SculptVertexPaintGeomMap *gmap = &ss->mode.wpaint.gmap; - - const Brush *brush = data->brush; - const Scene *scene = CTX_data_scene(data->C); - const StrokeCache *cache = ss->cache; - float brush_size_pressure, brush_alpha_value, brush_alpha_pressure; - get_brush_alpha_data( - scene, ss, brush, &brush_size_pressure, &brush_alpha_value, &brush_alpha_pressure); - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - const bool use_vert_sel = (data->me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; - float brush_dir[3]; - - sub_v3_v3v3(brush_dir, cache->location, cache->last_location); - project_plane_v3_v3v3(brush_dir, brush_dir, cache->view_normal); - - if (cache->is_last_valid && (normalize_v3(brush_dir) != 0.0f)) { - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - /* For grid based pbvh, take the vert whose loop corresponds to the current grid. - * Otherwise, take the current vert. */ - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - const MVert *mv_curr = &data->me->mvert[v_index]; - - /* If the vertex is selected */ - if (!(use_face_sel || use_vert_sel) || mv_curr->flag & SELECT) { - float brush_strength = cache->bstrength; - const float angle_cos = (use_normal && vd.no) ? - dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (((brush->flag & BRUSH_FRONTFACE) == 0 || (angle_cos > 0.0f)) && - ((brush->flag & BRUSH_FRONTFACE_FALLOFF) == 0 || - view_angle_limits_apply_falloff( - &data->wpd->normal_angle_precalc, angle_cos, &brush_strength))) { - bool do_color = false; - /* Minimum dot product between brush direction and current - * to neighbor direction is 0.0, meaning orthogonal. */ - float stroke_dot_max = 0.0f; - - /* Get the color of the loop in the opposite direction of the brush movement - * (this callback is specifically for smear.) */ - float weight_final = 0.0; - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - const int p_index = gmap->vert_to_poly[v_index].indices[j]; - const MPoly *mp = &data->me->mpoly[p_index]; - const MLoop *ml_other = &data->me->mloop[mp->loopstart]; - for (int k = 0; k < mp->totloop; k++, ml_other++) { - const uint v_other_index = ml_other->v; - if (v_other_index != v_index) { - const MVert *mv_other = &data->me->mvert[v_other_index]; - - /* Get the direction from the selected vert to the neighbor. */ - float other_dir[3]; - sub_v3_v3v3(other_dir, mv_curr->co, mv_other->co); - project_plane_v3_v3v3(other_dir, other_dir, cache->view_normal); - - normalize_v3(other_dir); - - const float stroke_dot = dot_v3v3(other_dir, brush_dir); - - if (stroke_dot > stroke_dot_max) { - stroke_dot_max = stroke_dot; - weight_final = data->wpd->precomputed_weight[v_other_index]; - do_color = true; - } - } - } - } - /* Apply weight to vertex */ - if (do_color) { - const float brush_fade = BKE_brush_curve_strength( - brush, sqrtf(test.dist), cache->radius); - const float final_alpha = brush_fade * brush_strength * grid_alpha * - brush_alpha_pressure; - - if (final_alpha <= 0.0f) { - continue; - } - - do_weight_paint_vertex( - data->vp, data->ob, data->wpi, v_index, final_alpha, (float)weight_final); - } - } - } - } - } - BKE_pbvh_vertex_iter_end; - } -} - -static void do_wpaint_brush_draw_task_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - const Scene *scene = CTX_data_scene(data->C); - - const Brush *brush = data->brush; - const StrokeCache *cache = ss->cache; - /* NOTE: normally `BKE_brush_weight_get(scene, brush)` is used, - * however in this case we calculate a new weight each time. */ - const float paintweight = data->strength; - float brush_size_pressure, brush_alpha_value, brush_alpha_pressure; - get_brush_alpha_data( - scene, ss, brush, &brush_size_pressure, &brush_alpha_value, &brush_alpha_pressure); - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - const bool use_vert_sel = (data->me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - /* NOTE: grids are 1:1 with corners (aka loops). - * For multires, take the vert whose loop corresponds to the current grid. - * Otherwise, take the current vert. */ - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - - const char v_flag = data->me->mvert[v_index].flag; - /* If the vertex is selected */ - if (!(use_face_sel || use_vert_sel) || v_flag & SELECT) { - float brush_strength = cache->bstrength; - const float angle_cos = (use_normal && vd.no) ? dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (((brush->flag & BRUSH_FRONTFACE) == 0 || (angle_cos > 0.0f)) && - ((brush->flag & BRUSH_FRONTFACE_FALLOFF) == 0 || - view_angle_limits_apply_falloff( - &data->wpd->normal_angle_precalc, angle_cos, &brush_strength))) { - const float brush_fade = BKE_brush_curve_strength( - brush, sqrtf(test.dist), cache->radius); - const float final_alpha = brush_fade * brush_strength * grid_alpha * - brush_alpha_pressure; - - if ((brush->flag & BRUSH_ACCUMULATE) == 0) { - if (ss->mode.wpaint.alpha_weight[v_index] < final_alpha) { - ss->mode.wpaint.alpha_weight[v_index] = final_alpha; - } - else { - continue; - } - } - - do_weight_paint_vertex(data->vp, data->ob, data->wpi, v_index, final_alpha, paintweight); - } - } - } - } - BKE_pbvh_vertex_iter_end; -} - -static void do_wpaint_brush_calc_average_weight_cb_ex( - void *__restrict userdata, const int n, const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - StrokeCache *cache = ss->cache; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - const bool use_vert_sel = (data->me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; - - struct WPaintAverageAccum *accum = (struct WPaintAverageAccum *)data->custom_data + n; - accum->len = 0; - accum->value = 0.0; - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - const float angle_cos = (use_normal && vd.no) ? dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (angle_cos > 0.0 && - BKE_brush_curve_strength(data->brush, sqrtf(test.dist), cache->radius) > 0.0) { - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - // const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - const char v_flag = data->me->mvert[v_index].flag; - - /* If the vertex is selected. */ - if (!(use_face_sel || use_vert_sel) || v_flag & SELECT) { - const MDeformVert *dv = &data->me->dvert[v_index]; - accum->len += 1; - accum->value += wpaint_get_active_weight(dv, data->wpi); - } - } - } - } - BKE_pbvh_vertex_iter_end; -} - -static void calculate_average_weight(SculptThreadedTaskData *data, - PBVHNode **UNUSED(nodes), - int totnode) -{ - struct WPaintAverageAccum *accum = MEM_mallocN(sizeof(*accum) * totnode, __func__); - data->custom_data = accum; - - TaskParallelSettings settings; - BKE_pbvh_parallel_range_settings(&settings, true, totnode); - BLI_task_parallel_range(0, totnode, data, do_wpaint_brush_calc_average_weight_cb_ex, &settings); - - uint accum_len = 0; - double accum_weight = 0.0; - for (int i = 0; i < totnode; i++) { - accum_len += accum[i].len; - accum_weight += accum[i].value; - } - if (accum_len != 0) { - accum_weight /= accum_len; - data->strength = (float)accum_weight; - } - - MEM_SAFE_FREE(data->custom_data); /* 'accum' */ -} - -static void wpaint_paint_leaves(bContext *C, - Object *ob, - Sculpt *sd, - VPaint *vp, - struct WPaintData *wpd, - WeightPaintInfo *wpi, - Mesh *me, - PBVHNode **nodes, - int totnode) -{ - Scene *scene = CTX_data_scene(C); - const Brush *brush = ob->sculpt->cache->brush; - - /* threaded loop over nodes */ - SculptThreadedTaskData data = { - .C = C, - .sd = sd, - .ob = ob, - .brush = brush, - .nodes = nodes, - .vp = vp, - .wpd = wpd, - .wpi = wpi, - .me = me, - }; - - /* Use this so average can modify its weight without touching the brush. */ - data.strength = BKE_brush_weight_get(scene, brush); - - /* NOTE: current mirroring code cannot be run in parallel */ - TaskParallelSettings settings; - const bool use_threading = !ME_USING_MIRROR_X_VERTEX_GROUPS(me); - BKE_pbvh_parallel_range_settings(&settings, use_threading, totnode); - - switch ((eBrushWeightPaintTool)brush->weightpaint_tool) { - case WPAINT_TOOL_AVERAGE: - calculate_average_weight(&data, nodes, totnode); - BLI_task_parallel_range(0, totnode, &data, do_wpaint_brush_draw_task_cb_ex, &settings); - break; - case WPAINT_TOOL_SMEAR: - BLI_task_parallel_range(0, totnode, &data, do_wpaint_brush_smear_task_cb_ex, &settings); - break; - case WPAINT_TOOL_BLUR: - BLI_task_parallel_range(0, totnode, &data, do_wpaint_brush_blur_task_cb_ex, &settings); - break; - case WPAINT_TOOL_DRAW: - BLI_task_parallel_range(0, totnode, &data, do_wpaint_brush_draw_task_cb_ex, &settings); - break; - } -} - -static PBVHNode **vwpaint_pbvh_gather_generic( - Object *ob, VPaint *wp, Sculpt *sd, Brush *brush, int *r_totnode) -{ - SculptSession *ss = ob->sculpt; - const bool use_normal = vwpaint_use_normal(wp); - PBVHNode **nodes = NULL; - - /* Build a list of all nodes that are potentially within the brush's area of influence */ - if (brush->falloff_shape == PAINT_FALLOFF_SHAPE_SPHERE) { - SculptSearchSphereData data = { - .ss = ss, - .sd = sd, - .radius_squared = ss->cache->radius_squared, - .original = true, - }; - BKE_pbvh_search_gather(ss->pbvh, SCULPT_search_sphere_cb, &data, &nodes, r_totnode); - if (use_normal) { - SCULPT_pbvh_calc_area_normal( - brush, ob, nodes, *r_totnode, true, ss->cache->sculpt_normal_symm); - } - else { - zero_v3(ss->cache->sculpt_normal_symm); - } - } - else { - struct DistRayAABB_Precalc dist_ray_to_aabb_precalc; - dist_squared_ray_to_aabb_v3_precalc( - &dist_ray_to_aabb_precalc, ss->cache->location, ss->cache->view_normal); - SculptSearchCircleData data = { - .ss = ss, - .sd = sd, - .radius_squared = ss->cache->radius_squared, - .original = true, - .dist_ray_to_aabb_precalc = &dist_ray_to_aabb_precalc, - }; - BKE_pbvh_search_gather(ss->pbvh, SCULPT_search_circle_cb, &data, &nodes, r_totnode); - if (use_normal) { - copy_v3_v3(ss->cache->sculpt_normal_symm, ss->cache->view_normal); - } - else { - zero_v3(ss->cache->sculpt_normal_symm); - } - } - return nodes; -} - -static void wpaint_do_paint(bContext *C, - Object *ob, - VPaint *wp, - Sculpt *sd, - struct WPaintData *wpd, - WeightPaintInfo *wpi, - Mesh *me, - Brush *brush, - const char symm, - const int axis, - const int i, - const float angle) -{ - SculptSession *ss = ob->sculpt; - ss->cache->radial_symmetry_pass = i; - SCULPT_cache_calc_brushdata_symm(ss->cache, symm, axis, angle); - - int totnode; - PBVHNode **nodes = vwpaint_pbvh_gather_generic(ob, wp, sd, brush, &totnode); - - wpaint_paint_leaves(C, ob, sd, wp, wpd, wpi, me, nodes, totnode); - - if (nodes) { - MEM_freeN(nodes); - } -} - -static void wpaint_do_radial_symmetry(bContext *C, - Object *ob, - VPaint *wp, - Sculpt *sd, - struct WPaintData *wpd, - WeightPaintInfo *wpi, - Mesh *me, - Brush *brush, - const char symm, - const int axis) -{ - for (int i = 1; i < wp->radial_symm[axis - 'X']; i++) { - const float angle = (2.0 * M_PI) * i / wp->radial_symm[axis - 'X']; - wpaint_do_paint(C, ob, wp, sd, wpd, wpi, me, brush, symm, axis, i, angle); - } -} - -/* near duplicate of: sculpt.c's, - * 'do_symmetrical_brush_actions' and 'vpaint_do_symmetrical_brush_actions'. */ -static void wpaint_do_symmetrical_brush_actions( - bContext *C, Object *ob, VPaint *wp, Sculpt *sd, struct WPaintData *wpd, WeightPaintInfo *wpi) -{ - Brush *brush = BKE_paint_brush(&wp->paint); - Mesh *me = ob->data; - SculptSession *ss = ob->sculpt; - StrokeCache *cache = ss->cache; - const char symm = SCULPT_mesh_symmetry_xyz_get(ob); - int i = 0; - - /* initial stroke */ - cache->mirror_symmetry_pass = 0; - wpaint_do_paint(C, ob, wp, sd, wpd, wpi, me, brush, 0, 'X', 0, 0); - wpaint_do_radial_symmetry(C, ob, wp, sd, wpd, wpi, me, brush, 0, 'X'); - wpaint_do_radial_symmetry(C, ob, wp, sd, wpd, wpi, me, brush, 0, 'Y'); - wpaint_do_radial_symmetry(C, ob, wp, sd, wpd, wpi, me, brush, 0, 'Z'); - - cache->symmetry = symm; - - if (me->editflag & ME_EDIT_MIRROR_VERTEX_GROUPS) { - /* We don't do any symmetry strokes when mirroring vertex groups. */ - copy_v3_v3(cache->true_last_location, cache->true_location); - cache->is_last_valid = true; - return; - } - - /* symm is a bit combination of XYZ - 1 is mirror - * X; 2 is Y; 3 is XY; 4 is Z; 5 is XZ; 6 is YZ; 7 is XYZ */ - for (i = 1; i <= symm; i++) { - if ((symm & i && (symm != 5 || i != 3) && (symm != 6 || (!ELEM(i, 3, 5))))) { - cache->mirror_symmetry_pass = i; - cache->radial_symmetry_pass = 0; - SCULPT_cache_calc_brushdata_symm(cache, i, 0, 0); - - if (i & (1 << 0)) { - wpaint_do_paint(C, ob, wp, sd, wpd, wpi, me, brush, i, 'X', 0, 0); - wpaint_do_radial_symmetry(C, ob, wp, sd, wpd, wpi, me, brush, i, 'X'); - } - if (i & (1 << 1)) { - wpaint_do_paint(C, ob, wp, sd, wpd, wpi, me, brush, i, 'Y', 0, 0); - wpaint_do_radial_symmetry(C, ob, wp, sd, wpd, wpi, me, brush, i, 'Y'); - } - if (i & (1 << 2)) { - wpaint_do_paint(C, ob, wp, sd, wpd, wpi, me, brush, i, 'Z', 0, 0); - wpaint_do_radial_symmetry(C, ob, wp, sd, wpd, wpi, me, brush, i, 'Z'); - } - } - } - copy_v3_v3(cache->true_last_location, cache->true_location); - cache->is_last_valid = true; -} - -static void wpaint_stroke_update_step(bContext *C, - wmOperator *UNUSED(op), - struct PaintStroke *stroke, - PointerRNA *itemptr) -{ - Scene *scene = CTX_data_scene(C); - ToolSettings *ts = CTX_data_tool_settings(C); - VPaint *wp = ts->wpaint; - Brush *brush = BKE_paint_brush(&wp->paint); - struct WPaintData *wpd = paint_stroke_mode_data(stroke); - ViewContext *vc; - Object *ob = CTX_data_active_object(C); - - SculptSession *ss = ob->sculpt; - Sculpt *sd = CTX_data_tool_settings(C)->sculpt; - - vwpaint_update_cache_variants(C, wp, ob, itemptr); - - float mat[4][4]; - - const float brush_alpha_value = BKE_brush_alpha_get(scene, brush); - - /* intentionally don't initialize as NULL, make sure we initialize all members below */ - WeightPaintInfo wpi; - - /* cannot paint if there is no stroke data */ - if (wpd == NULL) { - /* XXX: force a redraw here, since even though we can't paint, - * at least view won't freeze until stroke ends */ - ED_region_tag_redraw(CTX_wm_region(C)); - return; - } - - vc = &wpd->vc; - ob = vc->obact; - - view3d_operator_needs_opengl(C); - ED_view3d_init_mats_rv3d(ob, vc->rv3d); - - /* load projection matrix */ - mul_m4_m4m4(mat, vc->rv3d->persmat, ob->obmat); - - /* *** setup WeightPaintInfo - pass onto do_weight_paint_vertex *** */ - wpi.defbase_tot = wpd->defbase_tot; - wpi.defbase_sel = wpd->defbase_sel; - wpi.defbase_tot_sel = wpd->defbase_tot_sel; - - wpi.defbase_tot_unsel = wpi.defbase_tot - wpi.defbase_tot_sel; - wpi.active = wpd->active; - wpi.mirror = wpd->mirror; - wpi.lock_flags = wpd->lock_flags; - wpi.vgroup_validmap = wpd->vgroup_validmap; - wpi.vgroup_locked = wpd->vgroup_locked; - wpi.vgroup_unlocked = wpd->vgroup_unlocked; - wpi.do_flip = RNA_boolean_get(itemptr, "pen_flip") || ss->cache->invert; - wpi.do_multipaint = wpd->do_multipaint; - wpi.do_auto_normalize = ((ts->auto_normalize != 0) && (wpi.vgroup_validmap != NULL) && - (wpi.do_multipaint || wpi.vgroup_validmap[wpi.active.index])); - wpi.do_lock_relative = wpd->do_lock_relative; - wpi.is_normalized = wpi.do_auto_normalize || wpi.do_lock_relative; - wpi.brush_alpha_value = brush_alpha_value; - /* *** done setting up WeightPaintInfo *** */ - - if (wpd->precomputed_weight) { - precompute_weight_values(C, ob, brush, wpd, &wpi, ob->data); - } - - wpaint_do_symmetrical_brush_actions(C, ob, wp, sd, wpd, &wpi); - - swap_m4m4(vc->rv3d->persmat, mat); - - /* Calculate pivot for rotation around selection if needed. - * also needed for "Frame Selected" on last stroke. */ - float loc_world[3]; - mul_v3_m4v3(loc_world, ob->obmat, ss->cache->true_location); - paint_last_stroke_update(scene, loc_world); - - BKE_mesh_batch_cache_dirty_tag(ob->data, BKE_MESH_BATCH_DIRTY_ALL); - - DEG_id_tag_update(ob->data, 0); - WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob); - swap_m4m4(wpd->vc.rv3d->persmat, mat); - - rcti r; - if (SCULPT_get_redraw_rect(vc->region, CTX_wm_region_view3d(C), ob, &r)) { - if (ss->cache) { - ss->cache->current_r = r; - } - - /* previous is not set in the current cache else - * the partial rect will always grow */ - if (ss->cache) { - if (!BLI_rcti_is_empty(&ss->cache->previous_r)) { - BLI_rcti_union(&r, &ss->cache->previous_r); - } - } - - r.xmin += vc->region->winrct.xmin - 2; - r.xmax += vc->region->winrct.xmin + 2; - r.ymin += vc->region->winrct.ymin - 2; - r.ymax += vc->region->winrct.ymin + 2; - } - ED_region_tag_redraw_partial(vc->region, &r, true); -} - -static void wpaint_stroke_done(const bContext *C, struct PaintStroke *stroke) -{ - Object *ob = CTX_data_active_object(C); - struct WPaintData *wpd = paint_stroke_mode_data(stroke); - - if (wpd) { - if (wpd->defbase_sel) { - MEM_freeN((void *)wpd->defbase_sel); - } - if (wpd->vgroup_validmap) { - MEM_freeN((void *)wpd->vgroup_validmap); - } - if (wpd->vgroup_locked) { - MEM_freeN((void *)wpd->vgroup_locked); - } - if (wpd->vgroup_unlocked) { - MEM_freeN((void *)wpd->vgroup_unlocked); - } - if (wpd->lock_flags) { - MEM_freeN((void *)wpd->lock_flags); - } - if (wpd->active.lock) { - MEM_freeN((void *)wpd->active.lock); - } - if (wpd->mirror.lock) { - MEM_freeN((void *)wpd->mirror.lock); - } - if (wpd->precomputed_weight) { - MEM_freeN(wpd->precomputed_weight); - } - - MEM_freeN(wpd); - } - - SculptSession *ss = ob->sculpt; - - if (ss->cache->alt_smooth) { - ToolSettings *ts = CTX_data_tool_settings(C); - VPaint *vp = ts->wpaint; - smooth_brush_toggle_off(C, &vp->paint, ss->cache); - } - - /* and particles too */ - if (ob->particlesystem.first) { - ParticleSystem *psys; - int i; - - for (psys = ob->particlesystem.first; psys; psys = psys->next) { - for (i = 0; i < PSYS_TOT_VG; i++) { - if (psys->vgroup[i] == BKE_object_defgroup_active_index_get(ob)) { - psys->recalc |= ID_RECALC_PSYS_RESET; - break; - } - } - } - } - - DEG_id_tag_update(ob->data, 0); - - WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob); - - SCULPT_cache_free(ob->sculpt->cache); - ob->sculpt->cache = NULL; -} - -static int wpaint_invoke(bContext *C, wmOperator *op, const wmEvent *event) -{ - int retval; - - op->customdata = paint_stroke_new(C, - op, - SCULPT_stroke_get_location, - wpaint_stroke_test_start, - wpaint_stroke_update_step, - NULL, - wpaint_stroke_done, - event->type); - - if ((retval = op->type->modal(C, op, event)) == OPERATOR_FINISHED) { - paint_stroke_free(C, op, op->customdata); - return OPERATOR_FINISHED; - } - /* add modal handler */ - WM_event_add_modal_handler(C, op); - - OPERATOR_RETVAL_CHECK(retval); - BLI_assert(retval == OPERATOR_RUNNING_MODAL); - - return OPERATOR_RUNNING_MODAL; -} - -static int wpaint_exec(bContext *C, wmOperator *op) -{ - op->customdata = paint_stroke_new(C, - op, - SCULPT_stroke_get_location, - wpaint_stroke_test_start, - wpaint_stroke_update_step, - NULL, - wpaint_stroke_done, - 0); - - /* frees op->customdata */ - paint_stroke_exec(C, op, op->customdata); - - return OPERATOR_FINISHED; -} - -static void wpaint_cancel(bContext *C, wmOperator *op) -{ - Object *ob = CTX_data_active_object(C); - if (ob->sculpt->cache) { - SCULPT_cache_free(ob->sculpt->cache); - ob->sculpt->cache = NULL; - } - - paint_stroke_cancel(C, op, op->customdata); -} - -static int wpaint_modal(bContext *C, wmOperator *op, const wmEvent *event) -{ - return paint_stroke_modal(C, op, event, (struct PaintStroke **)&op->customdata); -} - -void PAINT_OT_weight_paint(wmOperatorType *ot) -{ - /* identifiers */ - ot->name = "Weight Paint"; - ot->idname = "PAINT_OT_weight_paint"; - ot->description = "Paint a stroke in the current vertex group's weights"; - - /* api callbacks */ - ot->invoke = wpaint_invoke; - ot->modal = wpaint_modal; - ot->exec = wpaint_exec; - ot->poll = weight_paint_poll; - ot->cancel = wpaint_cancel; - - /* flags */ - ot->flag = OPTYPE_UNDO | OPTYPE_BLOCKING; - - paint_stroke_operator_properties(ot); -} - -/** \} */ - -/* -------------------------------------------------------------------- */ -/** \name Toggle Vertex Paint Operator - * \{ */ - -/** - * \note Keep in sync with #wpaint_mode_toggle_exec - */ -static int vpaint_mode_toggle_exec(bContext *C, wmOperator *op) -{ - Main *bmain = CTX_data_main(C); - struct wmMsgBus *mbus = CTX_wm_message_bus(C); - Object *ob = CTX_data_active_object(C); - const int mode_flag = OB_MODE_VERTEX_PAINT; - const bool is_mode_set = (ob->mode & mode_flag) != 0; - Scene *scene = CTX_data_scene(C); - ToolSettings *ts = scene->toolsettings; - - if (!is_mode_set) { - if (!ED_object_mode_compat_set(C, ob, mode_flag, op->reports)) { - return OPERATOR_CANCELLED; - } - } - - Mesh *me = BKE_mesh_from_object(ob); - - /* toggle: end vpaint */ - if (is_mode_set) { - ED_object_vpaintmode_exit_ex(ob); - } - else { - Depsgraph *depsgraph = CTX_data_depsgraph_on_load(C); - if (depsgraph) { - depsgraph = CTX_data_ensure_evaluated_depsgraph(C); - } - ED_object_vpaintmode_enter_ex(bmain, depsgraph, scene, ob); - BKE_paint_toolslots_brush_validate(bmain, &ts->vpaint->paint); - } - - BKE_mesh_batch_cache_dirty_tag(ob->data, BKE_MESH_BATCH_DIRTY_ALL); - - /* update modifier stack for mapping requirements */ - DEG_id_tag_update(&me->id, 0); - - WM_event_add_notifier(C, NC_SCENE | ND_MODE, scene); - - WM_msg_publish_rna_prop(mbus, &ob->id, ob, Object, mode); - - WM_toolsystem_update_from_context_view3d(C); - - return OPERATOR_FINISHED; -} - -void PAINT_OT_vertex_paint_toggle(wmOperatorType *ot) -{ - /* identifiers */ - ot->name = "Vertex Paint Mode"; - ot->idname = "PAINT_OT_vertex_paint_toggle"; - ot->description = "Toggle the vertex paint mode in 3D view"; - - /* api callbacks */ - ot->exec = vpaint_mode_toggle_exec; - ot->poll = paint_mode_toggle_poll_test; - - /* flags */ - ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; -} - -/** \} */ - -/* -------------------------------------------------------------------- */ -/** \name Vertex Paint Operator - * \{ */ - -/* Implementation notes: - * - * Operator->invoke() - * - Validate context (add #Mesh.mloopcol). - * - Create custom-data storage. - * - Call paint once (mouse click). - * - Add modal handler. - * - * Operator->modal() - * - For every mouse-move, apply vertex paint. - * - Exit on mouse release, free custom-data. - * (return OPERATOR_FINISHED also removes handler and operator) - * - * For future: - * - implement a stroke event (or mouse-move with past positions). - * - revise whether op->customdata should be added in object, in set_vpaint. - */ - -struct VPaintData { - ViewContext vc; - struct NormalAnglePrecalc normal_angle_precalc; - - uint paintcol; - - struct VertProjHandle *vp_handle; - struct CoNo *vertexcosnos; - - /** - * Modify #Mesh.mloopcol directly, since the derived mesh is drawing from this - * array, otherwise we need to refresh the modifier stack. - */ - bool use_fast_update; - - /* loops tagged as having been painted, to apply shared vertex color - * blending only to modified loops */ - bool *mlooptag; - - bool is_texbrush; - - /* Special storage for smear brush, avoid feedback loop - update each step. */ - struct { - uint *color_prev; - uint *color_curr; - } smear; -}; - -static bool vpaint_stroke_test_start(bContext *C, struct wmOperator *op, const float mouse[2]) -{ - Scene *scene = CTX_data_scene(C); - ToolSettings *ts = scene->toolsettings; - struct PaintStroke *stroke = op->customdata; - VPaint *vp = ts->vpaint; - Brush *brush = BKE_paint_brush(&vp->paint); - struct VPaintData *vpd; - Object *ob = CTX_data_active_object(C); - Mesh *me; - SculptSession *ss = ob->sculpt; - Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C); - - /* context checks could be a poll() */ - me = BKE_mesh_from_object(ob); - if (me == NULL || me->totpoly == 0) { - return false; - } - - ED_mesh_color_ensure(me, NULL); - if (me->mloopcol == NULL) { - return false; - } - - /* make mode data storage */ - vpd = MEM_callocN(sizeof(*vpd), "VPaintData"); - paint_stroke_set_mode_data(stroke, vpd); - ED_view3d_viewcontext_init(C, &vpd->vc, depsgraph); - view_angle_limits_init(&vpd->normal_angle_precalc, - vp->paint.brush->falloff_angle, - (vp->paint.brush->flag & BRUSH_FRONTFACE_FALLOFF) != 0); - - vpd->paintcol = vpaint_get_current_col( - scene, vp, (RNA_enum_get(op->ptr, "mode") == BRUSH_STROKE_INVERT)); - - vpd->is_texbrush = !(brush->vertexpaint_tool == VPAINT_TOOL_BLUR) && brush->mtex.tex; - - /* are we painting onto a modified mesh?, - * if not we can skip face map trickiness */ - if (vertex_paint_use_fast_update_check(ob)) { - vpd->use_fast_update = true; - // printf("Fast update!\n"); - } - else { - vpd->use_fast_update = false; - // printf("No fast update!\n"); - } - - /* to keep tracked of modified loops for shared vertex color blending */ - if (brush->vertexpaint_tool == VPAINT_TOOL_BLUR) { - vpd->mlooptag = MEM_mallocN(sizeof(bool) * me->totloop, "VPaintData mlooptag"); - } - - if (brush->vertexpaint_tool == VPAINT_TOOL_SMEAR) { - vpd->smear.color_prev = MEM_mallocN(sizeof(uint) * me->totloop, __func__); - memcpy(vpd->smear.color_prev, me->mloopcol, sizeof(uint) * me->totloop); - vpd->smear.color_curr = MEM_dupallocN(vpd->smear.color_prev); - } - - /* Create projection handle */ - if (vpd->is_texbrush) { - ob->sculpt->building_vp_handle = true; - vpd->vp_handle = ED_vpaint_proj_handle_create(depsgraph, scene, ob, &vpd->vertexcosnos); - ob->sculpt->building_vp_handle = false; - } - - /* If not previously created, create vertex/weight paint mode session data */ - vertex_paint_init_stroke(depsgraph, ob); - vwpaint_update_cache_invariants(C, vp, ss, op, mouse); - vertex_paint_init_session_data(ts, ob); - - if (ob->sculpt->mode.vpaint.previous_color != NULL) { - memset(ob->sculpt->mode.vpaint.previous_color, 0, sizeof(uint) * me->totloop); - } - - return true; -} - -static void do_vpaint_brush_calc_average_color_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - const struct SculptVertexPaintGeomMap *gmap = &ss->mode.vpaint.gmap; - - StrokeCache *cache = ss->cache; - uint *lcol = data->lcol; - char *col; - const bool use_vert_sel = (data->me->editflag & - (ME_EDIT_PAINT_FACE_SEL | ME_EDIT_PAINT_VERT_SEL)) != 0; - - struct VPaintAverageAccum *accum = (struct VPaintAverageAccum *)data->custom_data + n; - accum->len = 0; - memset(accum->value, 0, sizeof(accum->value)); - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - if (BKE_brush_curve_strength(data->brush, 0.0, cache->radius) > 0.0) { - /* If the vertex is selected for painting. */ - const MVert *mv = &data->me->mvert[v_index]; - if (!use_vert_sel || mv->flag & SELECT) { - accum->len += gmap->vert_to_loop[v_index].count; - /* if a vertex is within the brush region, then add its color to the blend. */ - for (int j = 0; j < gmap->vert_to_loop[v_index].count; j++) { - const int l_index = gmap->vert_to_loop[v_index].indices[j]; - col = (char *)(&lcol[l_index]); - /* Color is squared to compensate the sqrt color encoding. */ - accum->value[0] += col[0] * col[0]; - accum->value[1] += col[1] * col[1]; - accum->value[2] += col[2] * col[2]; - } - } - } - } - } - BKE_pbvh_vertex_iter_end; -} - -static float tex_color_alpha_ubyte(SculptThreadedTaskData *data, - const float v_co[3], - uint *r_color) -{ - float rgba[4]; - float rgba_br[3]; - tex_color_alpha(data->vp, &data->vpd->vc, v_co, rgba); - rgb_uchar_to_float(rgba_br, (const uchar *)&data->vpd->paintcol); - mul_v3_v3(rgba_br, rgba); - rgb_float_to_uchar((uchar *)r_color, rgba_br); - return rgba[3]; -} - -static void do_vpaint_brush_draw_task_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - const struct SculptVertexPaintGeomMap *gmap = &ss->mode.vpaint.gmap; - - const Brush *brush = data->brush; - const StrokeCache *cache = ss->cache; - uint *lcol = data->lcol; - const Scene *scene = CTX_data_scene(data->C); - float brush_size_pressure, brush_alpha_value, brush_alpha_pressure; - get_brush_alpha_data( - scene, ss, brush, &brush_size_pressure, &brush_alpha_value, &brush_alpha_pressure); - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_vert_sel = (data->me->editflag & - (ME_EDIT_PAINT_FACE_SEL | ME_EDIT_PAINT_VERT_SEL)) != 0; - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - /* NOTE: Grids are 1:1 with corners (aka loops). - * For grid based pbvh, take the vert whose loop corresponds to the current grid. - * Otherwise, take the current vert. */ - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - const MVert *mv = &data->me->mvert[v_index]; - - /* If the vertex is selected for painting. */ - if (!use_vert_sel || mv->flag & SELECT) { - /* Calc the dot prod. between ray norm on surf and current vert - * (ie splash prevention factor), and only paint front facing verts. */ - float brush_strength = cache->bstrength; - const float angle_cos = (use_normal && vd.no) ? dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (((brush->flag & BRUSH_FRONTFACE) == 0 || (angle_cos > 0.0f)) && - ((brush->flag & BRUSH_FRONTFACE_FALLOFF) == 0 || - view_angle_limits_apply_falloff( - &data->vpd->normal_angle_precalc, angle_cos, &brush_strength))) { - const float brush_fade = BKE_brush_curve_strength( - brush, sqrtf(test.dist), cache->radius); - uint color_final = data->vpd->paintcol; - - /* If we're painting with a texture, sample the texture color and alpha. */ - float tex_alpha = 1.0; - if (data->vpd->is_texbrush) { - /* NOTE: we may want to paint alpha as vertex color alpha. */ - tex_alpha = tex_color_alpha_ubyte( - data, data->vpd->vertexcosnos[v_index].co, &color_final); - } - /* For each poly owning this vert, paint each loop belonging to this vert. */ - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - const int p_index = gmap->vert_to_poly[v_index].indices[j]; - const int l_index = gmap->vert_to_loop[v_index].indices[j]; - BLI_assert(data->me->mloop[l_index].v == v_index); - const MPoly *mp = &data->me->mpoly[p_index]; - if (!use_face_sel || mp->flag & ME_FACE_SEL) { - uint color_orig = 0; /* unused when array is NULL */ - if (ss->mode.vpaint.previous_color != NULL) { - /* Get the previous loop color */ - if (ss->mode.vpaint.previous_color[l_index] == 0) { - ss->mode.vpaint.previous_color[l_index] = lcol[l_index]; - } - color_orig = ss->mode.vpaint.previous_color[l_index]; - } - const float final_alpha = 255 * brush_fade * brush_strength * tex_alpha * - brush_alpha_pressure * grid_alpha; - - /* Mix the new color with the original based on final_alpha. */ - lcol[l_index] = vpaint_blend(data->vp, - lcol[l_index], - color_orig, - color_final, - final_alpha, - 255 * brush_strength); - } - } - } - } - } - } - BKE_pbvh_vertex_iter_end; -} - -static void do_vpaint_brush_blur_task_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - - Scene *scene = CTX_data_scene(data->C); - const struct SculptVertexPaintGeomMap *gmap = &ss->mode.vpaint.gmap; - const Brush *brush = data->brush; - const StrokeCache *cache = ss->cache; - uint *lcol = data->lcol; - float brush_size_pressure, brush_alpha_value, brush_alpha_pressure; - get_brush_alpha_data( - scene, ss, brush, &brush_size_pressure, &brush_alpha_value, &brush_alpha_pressure); - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_vert_sel = (data->me->editflag & - (ME_EDIT_PAINT_FACE_SEL | ME_EDIT_PAINT_VERT_SEL)) != 0; - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - /* For grid based pbvh, take the vert whose loop corresponds to the current grid. - * Otherwise, take the current vert. */ - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - const MVert *mv = &data->me->mvert[v_index]; - - /* If the vertex is selected for painting. */ - if (!use_vert_sel || mv->flag & SELECT) { - float brush_strength = cache->bstrength; - const float angle_cos = (use_normal && vd.no) ? dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (((brush->flag & BRUSH_FRONTFACE) == 0 || (angle_cos > 0.0f)) && - ((brush->flag & BRUSH_FRONTFACE_FALLOFF) == 0 || - view_angle_limits_apply_falloff( - &data->vpd->normal_angle_precalc, angle_cos, &brush_strength))) { - const float brush_fade = BKE_brush_curve_strength( - brush, sqrtf(test.dist), cache->radius); - - /* Get the average poly color */ - uint color_final = 0; - int total_hit_loops = 0; - uint blend[4] = {0}; - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - int p_index = gmap->vert_to_poly[v_index].indices[j]; - const MPoly *mp = &data->me->mpoly[p_index]; - if (!use_face_sel || mp->flag & ME_FACE_SEL) { - total_hit_loops += mp->totloop; - for (int k = 0; k < mp->totloop; k++) { - const uint l_index = mp->loopstart + k; - const char *col = (const char *)(&lcol[l_index]); - /* Color is squared to compensate the sqrt color encoding. */ - blend[0] += (uint)col[0] * (uint)col[0]; - blend[1] += (uint)col[1] * (uint)col[1]; - blend[2] += (uint)col[2] * (uint)col[2]; - blend[3] += (uint)col[3] * (uint)col[3]; - } - } - } - if (total_hit_loops != 0) { - /* Use rgb^2 color averaging. */ - char *col = (char *)(&color_final); - col[0] = round_fl_to_uchar(sqrtf(divide_round_i(blend[0], total_hit_loops))); - col[1] = round_fl_to_uchar(sqrtf(divide_round_i(blend[1], total_hit_loops))); - col[2] = round_fl_to_uchar(sqrtf(divide_round_i(blend[2], total_hit_loops))); - col[3] = round_fl_to_uchar(sqrtf(divide_round_i(blend[3], total_hit_loops))); - - /* For each poly owning this vert, - * paint each loop belonging to this vert. */ - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - const int p_index = gmap->vert_to_poly[v_index].indices[j]; - const int l_index = gmap->vert_to_loop[v_index].indices[j]; - BLI_assert(data->me->mloop[l_index].v == v_index); - const MPoly *mp = &data->me->mpoly[p_index]; - if (!use_face_sel || mp->flag & ME_FACE_SEL) { - uint color_orig = 0; /* unused when array is NULL */ - if (ss->mode.vpaint.previous_color != NULL) { - /* Get the previous loop color */ - if (ss->mode.vpaint.previous_color[l_index] == 0) { - ss->mode.vpaint.previous_color[l_index] = lcol[l_index]; - } - color_orig = ss->mode.vpaint.previous_color[l_index]; - } - const float final_alpha = 255 * brush_fade * brush_strength * - brush_alpha_pressure * grid_alpha; - /* Mix the new color with the original - * based on the brush strength and the curve. */ - lcol[l_index] = vpaint_blend(data->vp, - lcol[l_index], - color_orig, - *((uint *)col), - final_alpha, - 255 * brush_strength); - } - } - } - } - } - } - } - BKE_pbvh_vertex_iter_end; -} - -static void do_vpaint_brush_smear_task_cb_ex(void *__restrict userdata, - const int n, - const TaskParallelTLS *__restrict UNUSED(tls)) -{ - SculptThreadedTaskData *data = userdata; - SculptSession *ss = data->ob->sculpt; - const PBVHType pbvh_type = BKE_pbvh_type(ss->pbvh); - const bool has_grids = (pbvh_type == PBVH_GRIDS); - - Scene *scene = CTX_data_scene(data->C); - const struct SculptVertexPaintGeomMap *gmap = &ss->mode.vpaint.gmap; - const Brush *brush = data->brush; - const StrokeCache *cache = ss->cache; - uint *lcol = data->lcol; - float brush_size_pressure, brush_alpha_value, brush_alpha_pressure; - get_brush_alpha_data( - scene, ss, brush, &brush_size_pressure, &brush_alpha_value, &brush_alpha_pressure); - float brush_dir[3]; - const bool use_normal = vwpaint_use_normal(data->vp); - const bool use_vert_sel = (data->me->editflag & - (ME_EDIT_PAINT_FACE_SEL | ME_EDIT_PAINT_VERT_SEL)) != 0; - const bool use_face_sel = (data->me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; - - sub_v3_v3v3(brush_dir, cache->location, cache->last_location); - project_plane_v3_v3v3(brush_dir, brush_dir, cache->view_normal); - - if (cache->is_last_valid && (normalize_v3(brush_dir) != 0.0f)) { - - SculptBrushTest test; - SculptBrushTestFn sculpt_brush_test_sq_fn = SCULPT_brush_test_init_with_falloff_shape( - ss, &test, data->brush->falloff_shape); - const float *sculpt_normal_frontface = SCULPT_brush_frontface_normal_from_falloff_shape( - ss, data->brush->falloff_shape); - - /* For each vertex */ - PBVHVertexIter vd; - BKE_pbvh_vertex_iter_begin (ss->pbvh, data->nodes[n], vd, PBVH_ITER_UNIQUE) { - /* Test to see if the vertex coordinates are within the spherical brush region. */ - if (sculpt_brush_test_sq_fn(&test, vd.co)) { - /* For grid based pbvh, take the vert whose loop corresponds to the current grid. - * Otherwise, take the current vert. */ - const int v_index = has_grids ? data->me->mloop[vd.grid_indices[vd.g]].v : - vd.vert_indices[vd.i]; - const float grid_alpha = has_grids ? 1.0f / vd.gridsize : 1.0f; - const MVert *mv_curr = &data->me->mvert[v_index]; - - /* if the vertex is selected for painting. */ - if (!use_vert_sel || mv_curr->flag & SELECT) { - /* Calc the dot prod. between ray norm on surf and current vert - * (ie splash prevention factor), and only paint front facing verts. */ - float brush_strength = cache->bstrength; - const float angle_cos = (use_normal && vd.no) ? - dot_v3v3(sculpt_normal_frontface, vd.no) : - 1.0f; - if (((brush->flag & BRUSH_FRONTFACE) == 0 || (angle_cos > 0.0f)) && - ((brush->flag & BRUSH_FRONTFACE_FALLOFF) == 0 || - view_angle_limits_apply_falloff( - &data->vpd->normal_angle_precalc, angle_cos, &brush_strength))) { - const float brush_fade = BKE_brush_curve_strength( - brush, sqrtf(test.dist), cache->radius); - - bool do_color = false; - /* Minimum dot product between brush direction and current - * to neighbor direction is 0.0, meaning orthogonal. */ - float stroke_dot_max = 0.0f; - - /* Get the color of the loop in the opposite - * direction of the brush movement */ - uint color_final = 0; - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - const int p_index = gmap->vert_to_poly[v_index].indices[j]; - const int l_index = gmap->vert_to_loop[v_index].indices[j]; - BLI_assert(data->me->mloop[l_index].v == v_index); - UNUSED_VARS_NDEBUG(l_index); - const MPoly *mp = &data->me->mpoly[p_index]; - if (!use_face_sel || mp->flag & ME_FACE_SEL) { - const MLoop *ml_other = &data->me->mloop[mp->loopstart]; - for (int k = 0; k < mp->totloop; k++, ml_other++) { - const uint v_other_index = ml_other->v; - if (v_other_index != v_index) { - const MVert *mv_other = &data->me->mvert[v_other_index]; - - /* Get the direction from the - * selected vert to the neighbor. */ - float other_dir[3]; - sub_v3_v3v3(other_dir, mv_curr->co, mv_other->co); - project_plane_v3_v3v3(other_dir, other_dir, cache->view_normal); - - normalize_v3(other_dir); - - const float stroke_dot = dot_v3v3(other_dir, brush_dir); - - if (stroke_dot > stroke_dot_max) { - stroke_dot_max = stroke_dot; - color_final = data->vpd->smear.color_prev[mp->loopstart + k]; - do_color = true; - } - } - } - } - } - - if (do_color) { - const float final_alpha = 255 * brush_fade * brush_strength * brush_alpha_pressure * - grid_alpha; - - /* For each poly owning this vert, - * paint each loop belonging to this vert. */ - for (int j = 0; j < gmap->vert_to_poly[v_index].count; j++) { - const int p_index = gmap->vert_to_poly[v_index].indices[j]; - const int l_index = gmap->vert_to_loop[v_index].indices[j]; - BLI_assert(data->me->mloop[l_index].v == v_index); - const MPoly *mp = &data->me->mpoly[p_index]; - if (!use_face_sel || mp->flag & ME_FACE_SEL) { - /* Get the previous loop color */ - uint color_orig = 0; /* unused when array is NULL */ - if (ss->mode.vpaint.previous_color != NULL) { - /* Get the previous loop color */ - if (ss->mode.vpaint.previous_color[l_index] == 0) { - ss->mode.vpaint.previous_color[l_index] = lcol[l_index]; - } - color_orig = ss->mode.vpaint.previous_color[l_index]; - } - /* Mix the new color with the original - * based on the brush strength and the curve. */ - lcol[l_index] = vpaint_blend(data->vp, - lcol[l_index], - color_orig, - color_final, - final_alpha, - 255 * brush_strength); - - data->vpd->smear.color_curr[l_index] = lcol[l_index]; - } - } - } - } - } - } - } - BKE_pbvh_vertex_iter_end; - } -} - -static void calculate_average_color(SculptThreadedTaskData *data, - PBVHNode **UNUSED(nodes), - int totnode) -{ - struct VPaintAverageAccum *accum = MEM_mallocN(sizeof(*accum) * totnode, __func__); - data->custom_data = accum; - - TaskParallelSettings settings; - BKE_pbvh_parallel_range_settings(&settings, true, totnode); - BLI_task_parallel_range(0, totnode, data, do_vpaint_brush_calc_average_color_cb_ex, &settings); - - uint accum_len = 0; - uint accum_value[3] = {0}; - uchar blend[4] = {0}; - for (int i = 0; i < totnode; i++) { - accum_len += accum[i].len; - accum_value[0] += accum[i].value[0]; - accum_value[1] += accum[i].value[1]; - accum_value[2] += accum[i].value[2]; - } - if (accum_len != 0) { - blend[0] = round_fl_to_uchar(sqrtf(divide_round_i(accum_value[0], accum_len))); - blend[1] = round_fl_to_uchar(sqrtf(divide_round_i(accum_value[1], accum_len))); - blend[2] = round_fl_to_uchar(sqrtf(divide_round_i(accum_value[2], accum_len))); - blend[3] = 255; - data->vpd->paintcol = *((uint *)blend); - } - - MEM_SAFE_FREE(data->custom_data); /* 'accum' */ -} - -static void vpaint_paint_leaves(bContext *C, - Sculpt *sd, - VPaint *vp, - struct VPaintData *vpd, - Object *ob, - Mesh *me, - PBVHNode **nodes, - int totnode) -{ - const Brush *brush = ob->sculpt->cache->brush; - - SculptThreadedTaskData data = { - .C = C, - .sd = sd, - .ob = ob, - .brush = brush, - .nodes = nodes, - .vp = vp, - .vpd = vpd, - .lcol = (uint *)me->mloopcol, - .me = me, - }; - TaskParallelSettings settings; - BKE_pbvh_parallel_range_settings(&settings, true, totnode); - switch ((eBrushVertexPaintTool)brush->vertexpaint_tool) { - case VPAINT_TOOL_AVERAGE: - calculate_average_color(&data, nodes, totnode); - BLI_task_parallel_range(0, totnode, &data, do_vpaint_brush_draw_task_cb_ex, &settings); - break; - case VPAINT_TOOL_BLUR: - BLI_task_parallel_range(0, totnode, &data, do_vpaint_brush_blur_task_cb_ex, &settings); - break; - case VPAINT_TOOL_SMEAR: - BLI_task_parallel_range(0, totnode, &data, do_vpaint_brush_smear_task_cb_ex, &settings); - break; - case VPAINT_TOOL_DRAW: - BLI_task_parallel_range(0, totnode, &data, do_vpaint_brush_draw_task_cb_ex, &settings); - break; - } -} - -static void vpaint_do_paint(bContext *C, - Sculpt *sd, - VPaint *vp, - struct VPaintData *vpd, - Object *ob, - Mesh *me, - Brush *brush, - const char symm, - const int axis, - const int i, - const float angle) -{ - SculptSession *ss = ob->sculpt; - ss->cache->radial_symmetry_pass = i; - SCULPT_cache_calc_brushdata_symm(ss->cache, symm, axis, angle); - - int totnode; - PBVHNode **nodes = vwpaint_pbvh_gather_generic(ob, vp, sd, brush, &totnode); - - /* Paint those leaves. */ - vpaint_paint_leaves(C, sd, vp, vpd, ob, me, nodes, totnode); - - if (nodes) { - MEM_freeN(nodes); - } -} - -static void vpaint_do_radial_symmetry(bContext *C, - Sculpt *sd, - VPaint *vp, - struct VPaintData *vpd, - Object *ob, - Mesh *me, - Brush *brush, - const char symm, - const int axis) -{ - for (int i = 1; i < vp->radial_symm[axis - 'X']; i++) { - const float angle = (2.0 * M_PI) * i / vp->radial_symm[axis - 'X']; - vpaint_do_paint(C, sd, vp, vpd, ob, me, brush, symm, axis, i, angle); - } -} - -/* near duplicate of: sculpt.c's, - * 'do_symmetrical_brush_actions' and 'wpaint_do_symmetrical_brush_actions'. */ -static void vpaint_do_symmetrical_brush_actions( - bContext *C, Sculpt *sd, VPaint *vp, struct VPaintData *vpd, Object *ob) -{ - Brush *brush = BKE_paint_brush(&vp->paint); - Mesh *me = ob->data; - SculptSession *ss = ob->sculpt; - StrokeCache *cache = ss->cache; - const char symm = SCULPT_mesh_symmetry_xyz_get(ob); - int i = 0; - - /* initial stroke */ - cache->mirror_symmetry_pass = 0; - vpaint_do_paint(C, sd, vp, vpd, ob, me, brush, i, 'X', 0, 0); - vpaint_do_radial_symmetry(C, sd, vp, vpd, ob, me, brush, i, 'X'); - vpaint_do_radial_symmetry(C, sd, vp, vpd, ob, me, brush, i, 'Y'); - vpaint_do_radial_symmetry(C, sd, vp, vpd, ob, me, brush, i, 'Z'); - - cache->symmetry = symm; - - /* symm is a bit combination of XYZ - 1 is mirror - * X; 2 is Y; 3 is XY; 4 is Z; 5 is XZ; 6 is YZ; 7 is XYZ */ - for (i = 1; i <= symm; i++) { - if (symm & i && (symm != 5 || i != 3) && (symm != 6 || (!ELEM(i, 3, 5)))) { - cache->mirror_symmetry_pass = i; - cache->radial_symmetry_pass = 0; - SCULPT_cache_calc_brushdata_symm(cache, i, 0, 0); - - if (i & (1 << 0)) { - vpaint_do_paint(C, sd, vp, vpd, ob, me, brush, i, 'X', 0, 0); - vpaint_do_radial_symmetry(C, sd, vp, vpd, ob, me, brush, i, 'X'); - } - if (i & (1 << 1)) { - vpaint_do_paint(C, sd, vp, vpd, ob, me, brush, i, 'Y', 0, 0); - vpaint_do_radial_symmetry(C, sd, vp, vpd, ob, me, brush, i, 'Y'); - } - if (i & (1 << 2)) { - vpaint_do_paint(C, sd, vp, vpd, ob, me, brush, i, 'Z', 0, 0); - vpaint_do_radial_symmetry(C, sd, vp, vpd, ob, me, brush, i, 'Z'); - } - } - } - - copy_v3_v3(cache->true_last_location, cache->true_location); - cache->is_last_valid = true; -} - -static void vpaint_stroke_update_step(bContext *C, - wmOperator *UNUSED(op), - struct PaintStroke *stroke, - PointerRNA *itemptr) -{ - Scene *scene = CTX_data_scene(C); - ToolSettings *ts = CTX_data_tool_settings(C); - struct VPaintData *vpd = paint_stroke_mode_data(stroke); - VPaint *vp = ts->vpaint; - ViewContext *vc = &vpd->vc; - Object *ob = vc->obact; - SculptSession *ss = ob->sculpt; - Sculpt *sd = CTX_data_tool_settings(C)->sculpt; - - vwpaint_update_cache_variants(C, vp, ob, itemptr); - - float mat[4][4]; - - ED_view3d_init_mats_rv3d(ob, vc->rv3d); - - /* load projection matrix */ - mul_m4_m4m4(mat, vc->rv3d->persmat, ob->obmat); - - swap_m4m4(vc->rv3d->persmat, mat); - - vpaint_do_symmetrical_brush_actions(C, sd, vp, vpd, ob); - - swap_m4m4(vc->rv3d->persmat, mat); - - BKE_mesh_batch_cache_dirty_tag(ob->data, BKE_MESH_BATCH_DIRTY_ALL); - - if (vp->paint.brush->vertexpaint_tool == VPAINT_TOOL_SMEAR) { - memcpy( - vpd->smear.color_prev, vpd->smear.color_curr, sizeof(uint) * ((Mesh *)ob->data)->totloop); - } - - /* Calculate pivot for rotation around selection if needed. - * also needed for "Frame Selected" on last stroke. */ - float loc_world[3]; - mul_v3_m4v3(loc_world, ob->obmat, ss->cache->true_location); - paint_last_stroke_update(scene, loc_world); - - ED_region_tag_redraw(vc->region); - - if (vpd->use_fast_update == false) { - /* recalculate modifier stack to get new colors, slow, - * avoid this if we can! */ - DEG_id_tag_update(ob->data, 0); - } - else { - /* Flush changes through DEG. */ - DEG_id_tag_update(ob->data, ID_RECALC_COPY_ON_WRITE); - } -} - -static void vpaint_stroke_done(const bContext *C, struct PaintStroke *stroke) -{ - struct VPaintData *vpd = paint_stroke_mode_data(stroke); - ViewContext *vc = &vpd->vc; - Object *ob = vc->obact; - - if (vpd->is_texbrush) { - ED_vpaint_proj_handle_free(vpd->vp_handle); - } - - if (vpd->mlooptag) { - MEM_freeN(vpd->mlooptag); - } - if (vpd->smear.color_prev) { - MEM_freeN(vpd->smear.color_prev); - } - if (vpd->smear.color_curr) { - MEM_freeN(vpd->smear.color_curr); - } - - SculptSession *ss = ob->sculpt; - - if (ss->cache->alt_smooth) { - ToolSettings *ts = CTX_data_tool_settings(C); - VPaint *vp = ts->vpaint; - smooth_brush_toggle_off(C, &vp->paint, ss->cache); - } - - WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob); - - MEM_freeN(vpd); - - SCULPT_cache_free(ob->sculpt->cache); - ob->sculpt->cache = NULL; -} - -static int vpaint_invoke(bContext *C, wmOperator *op, const wmEvent *event) -{ - int retval; - - op->customdata = paint_stroke_new(C, - op, - SCULPT_stroke_get_location, - vpaint_stroke_test_start, - vpaint_stroke_update_step, - NULL, - vpaint_stroke_done, - event->type); - - if ((retval = op->type->modal(C, op, event)) == OPERATOR_FINISHED) { - paint_stroke_free(C, op, op->customdata); - return OPERATOR_FINISHED; - } - - /* add modal handler */ - WM_event_add_modal_handler(C, op); - - OPERATOR_RETVAL_CHECK(retval); - BLI_assert(retval == OPERATOR_RUNNING_MODAL); - - return OPERATOR_RUNNING_MODAL; -} - -static int vpaint_exec(bContext *C, wmOperator *op) -{ - op->customdata = paint_stroke_new(C, - op, - SCULPT_stroke_get_location, - vpaint_stroke_test_start, - vpaint_stroke_update_step, - NULL, - vpaint_stroke_done, - 0); - - /* frees op->customdata */ - paint_stroke_exec(C, op, op->customdata); - - return OPERATOR_FINISHED; -} - -static void vpaint_cancel(bContext *C, wmOperator *op) -{ - Object *ob = CTX_data_active_object(C); - if (ob->sculpt->cache) { - SCULPT_cache_free(ob->sculpt->cache); - ob->sculpt->cache = NULL; - } - - paint_stroke_cancel(C, op, op->customdata); -} - -static int vpaint_modal(bContext *C, wmOperator *op, const wmEvent *event) -{ - return paint_stroke_modal(C, op, event, (struct PaintStroke **)&op->customdata); -} - -void PAINT_OT_vertex_paint(wmOperatorType *ot) -{ - /* identifiers */ - ot->name = "Vertex Paint"; - ot->idname = "PAINT_OT_vertex_paint"; - ot->description = "Paint a stroke in the active color attribute layer"; - - /* api callbacks */ - ot->invoke = vpaint_invoke; - ot->modal = vpaint_modal; - ot->exec = vpaint_exec; - ot->poll = vertex_paint_poll; - ot->cancel = vpaint_cancel; - - /* flags */ - ot->flag = OPTYPE_UNDO | OPTYPE_BLOCKING; - - paint_stroke_operator_properties(ot); -} - -/** \} */ -- cgit v1.2.3