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Diffstat (limited to 'source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c')
| -rw-r--r-- | source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c | 869 |
1 files changed, 869 insertions, 0 deletions
diff --git a/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c b/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c new file mode 100644 index 00000000000..ef86f3c773d --- /dev/null +++ b/source/blender/editors/sculpt_paint/paint_vertex_weight_ops.c @@ -0,0 +1,869 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/editors/sculpt_paint/paint_vertex_weight_ops.c + * \ingroup edsculpt + */ + +#include "MEM_guardedalloc.h" + +#include "BLI_blenlib.h" +#include "BLI_math.h" +#include "BLI_array_utils.h" +#include "BLI_bitmap.h" +#include "BLI_task.h" +#include "BLI_string_utils.h" + +#include "IMB_imbuf.h" +#include "IMB_imbuf_types.h" +#include "IMB_colormanagement.h" + +//#include "DNA_armature_types.h" +#include "DNA_mesh_types.h" +#include "DNA_particle_types.h" +#include "DNA_brush_types.h" +#include "DNA_object_types.h" +#include "DNA_scene_types.h" + +#include "RNA_access.h" +#include "RNA_define.h" +#include "RNA_enum_types.h" + +#include "BKE_DerivedMesh.h" +#include "BKE_brush.h" +#include "BKE_context.h" +#include "BKE_deform.h" +#include "BKE_mesh.h" +#include "BKE_mesh_mapping.h" +#include "BKE_modifier.h" +#include "BKE_object_deform.h" +#include "BKE_paint.h" +#include "BKE_report.h" +#include "BKE_colortools.h" + +#include "DEG_depsgraph.h" + +#include "WM_api.h" +#include "WM_types.h" + +#include "ED_armature.h" +#include "ED_mesh.h" +#include "ED_screen.h" +#include "ED_view3d.h" + +#include "paint_intern.h" /* own include */ + +/* -------------------------------------------------------------------- */ +/** \name Store Previous Weights + * + * Use to avoid feedback loop w/ mirrored edits. + * \{ */ + +struct WPaintPrev { + /* previous vertex weights */ + struct MDeformVert *wpaint_prev; + /* allocation size of prev buffers */ + int tot; +}; + + +static void wpaint_prev_init(struct WPaintPrev *wpp) +{ + wpp->wpaint_prev = NULL; + wpp->tot = 0; +} + +static void wpaint_prev_create(struct WPaintPrev *wpp, MDeformVert *dverts, int dcount) +{ + wpaint_prev_init(wpp); + + if (dverts && dcount) { + wpp->wpaint_prev = MEM_mallocN(sizeof(MDeformVert) * dcount, "wpaint prev"); + wpp->tot = dcount; + BKE_defvert_array_copy(wpp->wpaint_prev, dverts, dcount); + } +} + +static void wpaint_prev_destroy(struct WPaintPrev *wpp) +{ + if (wpp->wpaint_prev) { + BKE_defvert_array_free(wpp->wpaint_prev, wpp->tot); + } + wpp->wpaint_prev = NULL; + wpp->tot = 0; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Weight from Bones Operator + * \{ */ + +static int weight_from_bones_poll(bContext *C) +{ + Object *ob = CTX_data_active_object(C); + + return (ob && (ob->mode & OB_MODE_WEIGHT_PAINT) && modifiers_isDeformedByArmature(ob)); +} + +static int weight_from_bones_exec(bContext *C, wmOperator *op) +{ + Scene *scene = CTX_data_scene(C); + Object *ob = CTX_data_active_object(C); + Object *armob = modifiers_isDeformedByArmature(ob); + Mesh *me = ob->data; + int type = RNA_enum_get(op->ptr, "type"); + + EvaluationContext eval_ctx; + + CTX_data_eval_ctx(C, &eval_ctx); + + create_vgroups_from_armature(op->reports, &eval_ctx, scene, ob, armob, type, (me->editflag & ME_EDIT_MIRROR_X)); + + DEG_id_tag_update(&me->id, 0); + WM_event_add_notifier(C, NC_GEOM | ND_DATA, me); + + return OPERATOR_FINISHED; +} + +void PAINT_OT_weight_from_bones(wmOperatorType *ot) +{ + static EnumPropertyItem type_items[] = { + {ARM_GROUPS_AUTO, "AUTOMATIC", 0, "Automatic", "Automatic weights from bones"}, + {ARM_GROUPS_ENVELOPE, "ENVELOPES", 0, "From Envelopes", "Weights from envelopes with user defined radius"}, + {0, NULL, 0, NULL, NULL}}; + + /* identifiers */ + ot->name = "Weight from Bones"; + ot->idname = "PAINT_OT_weight_from_bones"; + ot->description = "Set the weights of the groups matching the attached armature's selected bones, " + "using the distance between the vertices and the bones"; + + /* api callbacks */ + ot->exec = weight_from_bones_exec; + ot->invoke = WM_menu_invoke; + ot->poll = weight_from_bones_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; + + /* properties */ + ot->prop = RNA_def_enum(ot->srna, "type", type_items, 0, "Type", "Method to use for assigning weights"); +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Sample Weight Operator + * \{ */ + +/* sets wp->weight to the closest weight value to vertex */ +/* note: we cant sample frontbuf, weight colors are interpolated too unpredictable */ +static int weight_sample_invoke(bContext *C, wmOperator *op, const wmEvent *event) +{ + ViewContext vc; + Mesh *me; + bool changed = false; + + view3d_set_viewcontext(C, &vc); + me = BKE_mesh_from_object(vc.obact); + + if (me && me->dvert && vc.v3d && vc.rv3d && (vc.obact->actdef != 0)) { + const bool use_vert_sel = (me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; + int v_idx_best = -1; + uint index; + + view3d_operator_needs_opengl(C); + ED_view3d_init_mats_rv3d(vc.obact, vc.rv3d); + + if (use_vert_sel) { + if (ED_mesh_pick_vert(C, vc.obact, event->mval, &index, ED_MESH_PICK_DEFAULT_VERT_SIZE, true)) { + v_idx_best = index; + } + } + else { + if (ED_mesh_pick_face_vert(C, vc.obact, event->mval, &index, ED_MESH_PICK_DEFAULT_FACE_SIZE)) { + v_idx_best = index; + } + else if (ED_mesh_pick_face(C, vc.obact, event->mval, &index, ED_MESH_PICK_DEFAULT_FACE_SIZE)) { + /* this relies on knowning the internal worksings of ED_mesh_pick_face_vert() */ + BKE_report(op->reports, RPT_WARNING, "The modifier used does not support deformed locations"); + } + } + + if (v_idx_best != -1) { /* should always be valid */ + ToolSettings *ts = vc.scene->toolsettings; + Brush *brush = BKE_paint_brush(&ts->wpaint->paint); + const int vgroup_active = vc.obact->actdef - 1; + float vgroup_weight = defvert_find_weight(&me->dvert[v_idx_best], vgroup_active); + + /* use combined weight in multipaint mode, since that's what is displayed to the user in the colors */ + if (ts->multipaint) { + int defbase_tot_sel; + const int defbase_tot = BLI_listbase_count(&vc.obact->defbase); + bool *defbase_sel = BKE_object_defgroup_selected_get(vc.obact, defbase_tot, &defbase_tot_sel); + + if (defbase_tot_sel > 1) { + if (me->editflag & ME_EDIT_MIRROR_X) { + BKE_object_defgroup_mirror_selection( + vc.obact, defbase_tot, defbase_sel, defbase_sel, &defbase_tot_sel); + } + + vgroup_weight = BKE_defvert_multipaint_collective_weight( + &me->dvert[v_idx_best], defbase_tot, defbase_sel, defbase_tot_sel, ts->auto_normalize); + + /* if autonormalize is enabled, but weights are not normalized, the value can exceed 1 */ + CLAMP(vgroup_weight, 0.0f, 1.0f); + } + + MEM_freeN(defbase_sel); + } + + BKE_brush_weight_set(vc.scene, brush, vgroup_weight); + changed = true; + } + } + + if (changed) { + /* not really correct since the brush didnt change, but redraws the toolbar */ + WM_main_add_notifier(NC_BRUSH | NA_EDITED, NULL); /* ts->wpaint->paint.brush */ + + return OPERATOR_FINISHED; + } + else { + return OPERATOR_CANCELLED; + } +} + +void PAINT_OT_weight_sample(wmOperatorType *ot) +{ + /* identifiers */ + ot->name = "Weight Paint Sample Weight"; + ot->idname = "PAINT_OT_weight_sample"; + ot->description = "Use the mouse to sample a weight in the 3D view"; + + /* api callbacks */ + ot->invoke = weight_sample_invoke; + ot->poll = weight_paint_mode_poll; + + /* flags */ + ot->flag = OPTYPE_UNDO; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Weight Paint Sample Group Operator + * \{ */ + +/* samples cursor location, and gives menu with vertex groups to activate */ +static bool weight_paint_sample_enum_itemf__helper(const MDeformVert *dvert, const int defbase_tot, int *groups) +{ + /* this func fills in used vgroup's */ + bool found = false; + int i = dvert->totweight; + MDeformWeight *dw; + for (dw = dvert->dw; i > 0; dw++, i--) { + if (dw->def_nr < defbase_tot) { + groups[dw->def_nr] = true; + found = true; + } + } + return found; +} +static EnumPropertyItem *weight_paint_sample_enum_itemf( + bContext *C, PointerRNA *UNUSED(ptr), PropertyRNA *UNUSED(prop), bool *r_free) +{ + if (C) { + wmWindow *win = CTX_wm_window(C); + if (win && win->eventstate) { + ViewContext vc; + Mesh *me; + + view3d_set_viewcontext(C, &vc); + me = BKE_mesh_from_object(vc.obact); + + if (me && me->dvert && vc.v3d && vc.rv3d && vc.obact->defbase.first) { + const int defbase_tot = BLI_listbase_count(&vc.obact->defbase); + const bool use_vert_sel = (me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; + int *groups = MEM_callocN(defbase_tot * sizeof(int), "groups"); + bool found = false; + uint index; + + const int mval[2] = { + win->eventstate->x - vc.ar->winrct.xmin, + win->eventstate->y - vc.ar->winrct.ymin, + }; + + view3d_operator_needs_opengl(C); + ED_view3d_init_mats_rv3d(vc.obact, vc.rv3d); + + if (use_vert_sel) { + if (ED_mesh_pick_vert(C, vc.obact, mval, &index, ED_MESH_PICK_DEFAULT_VERT_SIZE, true)) { + MDeformVert *dvert = &me->dvert[index]; + found |= weight_paint_sample_enum_itemf__helper(dvert, defbase_tot, groups); + } + } + else { + if (ED_mesh_pick_face(C, vc.obact, mval, &index, ED_MESH_PICK_DEFAULT_FACE_SIZE)) { + const MPoly *mp = &me->mpoly[index]; + uint fidx = mp->totloop - 1; + + do { + MDeformVert *dvert = &me->dvert[me->mloop[mp->loopstart + fidx].v]; + found |= weight_paint_sample_enum_itemf__helper(dvert, defbase_tot, groups); + } while (fidx--); + } + } + + if (found == false) { + MEM_freeN(groups); + } + else { + EnumPropertyItem *item = NULL, item_tmp = {0}; + int totitem = 0; + int i = 0; + bDeformGroup *dg; + for (dg = vc.obact->defbase.first; dg && i < defbase_tot; i++, dg = dg->next) { + if (groups[i]) { + item_tmp.identifier = item_tmp.name = dg->name; + item_tmp.value = i; + RNA_enum_item_add(&item, &totitem, &item_tmp); + } + } + + RNA_enum_item_end(&item, &totitem); + *r_free = true; + + MEM_freeN(groups); + return item; + } + } + } + } + + return DummyRNA_NULL_items; +} + +static int weight_sample_group_exec(bContext *C, wmOperator *op) +{ + int type = RNA_enum_get(op->ptr, "group"); + ViewContext vc; + view3d_set_viewcontext(C, &vc); + + BLI_assert(type + 1 >= 0); + vc.obact->actdef = type + 1; + + DEG_id_tag_update(&vc.obact->id, OB_RECALC_DATA); + WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, vc.obact); + return OPERATOR_FINISHED; +} + +/* TODO, we could make this a menu into OBJECT_OT_vertex_group_set_active rather than its own operator */ +void PAINT_OT_weight_sample_group(wmOperatorType *ot) +{ + PropertyRNA *prop = NULL; + + /* identifiers */ + ot->name = "Weight Paint Sample Group"; + ot->idname = "PAINT_OT_weight_sample_group"; + ot->description = "Select one of the vertex groups available under current mouse position"; + + /* api callbacks */ + ot->exec = weight_sample_group_exec; + ot->invoke = WM_menu_invoke; + ot->poll = weight_paint_mode_poll; + + /* flags */ + ot->flag = OPTYPE_UNDO; + + /* keyingset to use (dynamic enum) */ + prop = RNA_def_enum(ot->srna, "group", DummyRNA_DEFAULT_items, 0, "Keying Set", "The Keying Set to use"); + RNA_def_enum_funcs(prop, weight_paint_sample_enum_itemf); + RNA_def_property_flag(prop, PROP_ENUM_NO_TRANSLATE); + ot->prop = prop; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Weight Set Operator + * \{ */ + +/* fills in the selected faces with the current weight and vertex group */ +static bool weight_paint_set(Object *ob, float paintweight) +{ + Mesh *me = ob->data; + const MPoly *mp; + MDeformWeight *dw, *dw_prev; + int vgroup_active, vgroup_mirror = -1; + uint index; + const bool topology = (me->editflag & ME_EDIT_MIRROR_TOPO) != 0; + + /* mutually exclusive, could be made into a */ + const short paint_selmode = ME_EDIT_PAINT_SEL_MODE(me); + + if (me->totpoly == 0 || me->dvert == NULL || !me->mpoly) { + return false; + } + + vgroup_active = ob->actdef - 1; + + /* if mirror painting, find the other group */ + if (me->editflag & ME_EDIT_MIRROR_X) { + vgroup_mirror = ED_wpaint_mirror_vgroup_ensure(ob, vgroup_active); + } + + struct WPaintPrev wpp; + wpaint_prev_create(&wpp, me->dvert, me->totvert); + + for (index = 0, mp = me->mpoly; index < me->totpoly; index++, mp++) { + uint fidx = mp->totloop - 1; + + if ((paint_selmode == SCE_SELECT_FACE) && !(mp->flag & ME_FACE_SEL)) { + continue; + } + + do { + uint vidx = me->mloop[mp->loopstart + fidx].v; + + if (!me->dvert[vidx].flag) { + if ((paint_selmode == SCE_SELECT_VERTEX) && !(me->mvert[vidx].flag & SELECT)) { + continue; + } + + dw = defvert_verify_index(&me->dvert[vidx], vgroup_active); + if (dw) { + dw_prev = defvert_verify_index(wpp.wpaint_prev + vidx, vgroup_active); + dw_prev->weight = dw->weight; /* set the undo weight */ + dw->weight = paintweight; + + if (me->editflag & ME_EDIT_MIRROR_X) { /* x mirror painting */ + int j = mesh_get_x_mirror_vert(ob, NULL, vidx, topology); + if (j >= 0) { + /* copy, not paint again */ + if (vgroup_mirror != -1) { + dw = defvert_verify_index(me->dvert + j, vgroup_mirror); + dw_prev = defvert_verify_index(wpp.wpaint_prev + j, vgroup_mirror); + } + else { + dw = defvert_verify_index(me->dvert + j, vgroup_active); + dw_prev = defvert_verify_index(wpp.wpaint_prev + j, vgroup_active); + } + dw_prev->weight = dw->weight; /* set the undo weight */ + dw->weight = paintweight; + } + } + } + me->dvert[vidx].flag = 1; + } + + } while (fidx--); + } + + { + MDeformVert *dv = me->dvert; + for (index = me->totvert; index != 0; index--, dv++) { + dv->flag = 0; + } + } + + wpaint_prev_destroy(&wpp); + + DEG_id_tag_update(&me->id, 0); + + return true; +} + + +static int weight_paint_set_exec(bContext *C, wmOperator *op) +{ + struct Scene *scene = CTX_data_scene(C); + Object *obact = CTX_data_active_object(C); + ToolSettings *ts = CTX_data_tool_settings(C); + Brush *brush = BKE_paint_brush(&ts->wpaint->paint); + float vgroup_weight = BKE_brush_weight_get(scene, brush); + + if (ED_wpaint_ensure_data(C, op->reports, WPAINT_ENSURE_MIRROR, NULL) == false) { + return OPERATOR_CANCELLED; + } + + if (weight_paint_set(obact, vgroup_weight)) { + ED_region_tag_redraw(CTX_wm_region(C)); /* XXX - should redraw all 3D views */ + return OPERATOR_FINISHED; + } + else { + return OPERATOR_CANCELLED; + } +} + +void PAINT_OT_weight_set(wmOperatorType *ot) +{ + /* identifiers */ + ot->name = "Set Weight"; + ot->idname = "PAINT_OT_weight_set"; + ot->description = "Fill the active vertex group with the current paint weight"; + + /* api callbacks */ + ot->exec = weight_paint_set_exec; + ot->poll = mask_paint_poll; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; +} + +/** \} */ + +/* -------------------------------------------------------------------- */ +/** \name Interactive Weight Gradient Operator + * \{ */ + +/* *** VGroups Gradient *** */ +typedef struct DMGradient_vertStore { + float sco[2]; + float weight_orig; + enum { + VGRAD_STORE_NOP = 0, + VGRAD_STORE_DW_EXIST = (1 << 0) + } flag; +} DMGradient_vertStore; + +typedef struct DMGradient_vertStoreBase { + struct WPaintPrev wpp; + DMGradient_vertStore elem[0]; +} DMGradient_vertStoreBase; + +typedef struct DMGradient_userData { + struct ARegion *ar; + Scene *scene; + Mesh *me; + Brush *brush; + const float *sco_start; /* [2] */ + const float *sco_end; /* [2] */ + float sco_line_div; /* store (1.0f / len_v2v2(sco_start, sco_end)) */ + int def_nr; + bool is_init; + DMGradient_vertStoreBase *vert_cache; + /* only for init */ + BLI_bitmap *vert_visit; + + /* options */ + short use_select; + short type; + float weightpaint; +} DMGradient_userData; + +static void gradientVert_update(DMGradient_userData *grad_data, int index) +{ + Mesh *me = grad_data->me; + DMGradient_vertStore *vs = &grad_data->vert_cache->elem[index]; + float alpha; + + if (grad_data->type == WPAINT_GRADIENT_TYPE_LINEAR) { + alpha = line_point_factor_v2(vs->sco, grad_data->sco_start, grad_data->sco_end); + } + else { + BLI_assert(grad_data->type == WPAINT_GRADIENT_TYPE_RADIAL); + alpha = len_v2v2(grad_data->sco_start, vs->sco) * grad_data->sco_line_div; + } + /* no need to clamp 'alpha' yet */ + + /* adjust weight */ + alpha = BKE_brush_curve_strength_clamped(grad_data->brush, alpha, 1.0f); + + if (alpha != 0.0f) { + MDeformVert *dv = &me->dvert[index]; + MDeformWeight *dw = defvert_verify_index(dv, grad_data->def_nr); + // dw->weight = alpha; // testing + int tool = grad_data->brush->vertexpaint_tool; + float testw; + + /* init if we just added */ + testw = ED_wpaint_blend_tool(tool, vs->weight_orig, grad_data->weightpaint, alpha * grad_data->brush->alpha); + CLAMP(testw, 0.0f, 1.0f); + dw->weight = testw; + } + else { + MDeformVert *dv = &me->dvert[index]; + if (vs->flag & VGRAD_STORE_DW_EXIST) { + /* normally we NULL check, but in this case we know it exists */ + MDeformWeight *dw = defvert_find_index(dv, grad_data->def_nr); + dw->weight = vs->weight_orig; + } + else { + /* wasn't originally existing, remove */ + MDeformWeight *dw = defvert_find_index(dv, grad_data->def_nr); + if (dw) { + defvert_remove_group(dv, dw); + } + } + } +} + +static void gradientVertUpdate__mapFunc( + void *userData, int index, const float UNUSED(co[3]), + const float UNUSED(no_f[3]), const short UNUSED(no_s[3])) +{ + DMGradient_userData *grad_data = userData; + Mesh *me = grad_data->me; + if ((grad_data->use_select == false) || (me->mvert[index].flag & SELECT)) { + DMGradient_vertStore *vs = &grad_data->vert_cache->elem[index]; + if (vs->sco[0] != FLT_MAX) { + gradientVert_update(grad_data, index); + } + } +} + +static void gradientVertInit__mapFunc( + void *userData, int index, const float co[3], + const float UNUSED(no_f[3]), const short UNUSED(no_s[3])) +{ + DMGradient_userData *grad_data = userData; + Mesh *me = grad_data->me; + + if ((grad_data->use_select == false) || (me->mvert[index].flag & SELECT)) { + /* run first pass only, + * the screen coords of the verts need to be cached because + * updating the mesh may move them about (entering feedback loop) */ + + if (BLI_BITMAP_TEST(grad_data->vert_visit, index) == 0) { + DMGradient_vertStore *vs = &grad_data->vert_cache->elem[index]; + if (ED_view3d_project_float_object(grad_data->ar, + co, vs->sco, + V3D_PROJ_TEST_CLIP_BB | V3D_PROJ_TEST_CLIP_NEAR) == V3D_PROJ_RET_OK) + { + /* ok */ + MDeformVert *dv = &me->dvert[index]; + const MDeformWeight *dw; + dw = defvert_find_index(dv, grad_data->def_nr); + if (dw) { + vs->weight_orig = dw->weight; + vs->flag = VGRAD_STORE_DW_EXIST; + } + else { + vs->weight_orig = 0.0f; + vs->flag = VGRAD_STORE_NOP; + } + + BLI_BITMAP_ENABLE(grad_data->vert_visit, index); + + gradientVert_update(grad_data, index); + } + else { + /* no go */ + copy_v2_fl(vs->sco, FLT_MAX); + } + } + } +} + +static int paint_weight_gradient_modal(bContext *C, wmOperator *op, const wmEvent *event) +{ + wmGesture *gesture = op->customdata; + DMGradient_vertStoreBase *vert_cache = gesture->userdata; + int ret = WM_gesture_straightline_modal(C, op, event); + + if (ret & OPERATOR_RUNNING_MODAL) { + if (event->type == LEFTMOUSE && event->val == KM_RELEASE) { /* XXX, hardcoded */ + /* generally crap! redo! */ + WM_gesture_straightline_cancel(C, op); + ret &= ~OPERATOR_RUNNING_MODAL; + ret |= OPERATOR_FINISHED; + } + } + + if (ret & OPERATOR_CANCELLED) { + Object *ob = CTX_data_active_object(C); + Mesh *me = ob->data; + if (vert_cache->wpp.wpaint_prev) { + BKE_defvert_array_free_elems(me->dvert, me->totvert); + BKE_defvert_array_copy(me->dvert, vert_cache->wpp.wpaint_prev, me->totvert); + wpaint_prev_destroy(&vert_cache->wpp); + } + MEM_freeN(vert_cache); + + DEG_id_tag_update(&ob->id, OB_RECALC_DATA); + WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob); + } + else if (ret & OPERATOR_FINISHED) { + wpaint_prev_destroy(&vert_cache->wpp); + MEM_freeN(vert_cache); + } + + return ret; +} + +static int paint_weight_gradient_exec(bContext *C, wmOperator *op) +{ + wmGesture *gesture = op->customdata; + DMGradient_vertStoreBase *vert_cache; + struct ARegion *ar = CTX_wm_region(C); + Scene *scene = CTX_data_scene(C); + Object *ob = CTX_data_active_object(C); + Mesh *me = ob->data; + int x_start = RNA_int_get(op->ptr, "xstart"); + int y_start = RNA_int_get(op->ptr, "ystart"); + int x_end = RNA_int_get(op->ptr, "xend"); + int y_end = RNA_int_get(op->ptr, "yend"); + float sco_start[2] = {x_start, y_start}; + float sco_end[2] = {x_end, y_end}; + const bool is_interactive = (gesture != NULL); + + EvaluationContext eval_ctx; + + CTX_data_eval_ctx(C, &eval_ctx); + + DerivedMesh *dm = mesh_get_derived_final(&eval_ctx, scene, ob, scene->customdata_mask); + + DMGradient_userData data = {NULL}; + + if (is_interactive) { + if (gesture->userdata == NULL) { + gesture->userdata = MEM_mallocN( + sizeof(DMGradient_vertStoreBase) + + (sizeof(DMGradient_vertStore) * me->totvert), + __func__); + gesture->userdata_free = false; + data.is_init = true; + + wpaint_prev_create(&((DMGradient_vertStoreBase *)gesture->userdata)->wpp, me->dvert, me->totvert); + + /* on init only, convert face -> vert sel */ + if (me->editflag & ME_EDIT_PAINT_FACE_SEL) { + BKE_mesh_flush_select_from_polys(me); + } + } + + vert_cache = gesture->userdata; + } + else { + if (ED_wpaint_ensure_data(C, op->reports, 0, NULL) == false) { + return OPERATOR_CANCELLED; + } + + data.is_init = true; + vert_cache = MEM_mallocN( + sizeof(DMGradient_vertStoreBase) + + (sizeof(DMGradient_vertStore) * me->totvert), + __func__); + } + + data.ar = ar; + data.scene = scene; + data.me = ob->data; + data.sco_start = sco_start; + data.sco_end = sco_end; + data.sco_line_div = 1.0f / len_v2v2(sco_start, sco_end); + data.def_nr = ob->actdef - 1; + data.use_select = (me->editflag & (ME_EDIT_PAINT_FACE_SEL | ME_EDIT_PAINT_VERT_SEL)); + data.vert_cache = vert_cache; + data.vert_visit = NULL; + data.type = RNA_enum_get(op->ptr, "type"); + + { + ToolSettings *ts = CTX_data_tool_settings(C); + VPaint *wp = ts->wpaint; + struct Brush *brush = BKE_paint_brush(&wp->paint); + + curvemapping_initialize(brush->curve); + + data.brush = brush; + data.weightpaint = BKE_brush_weight_get(scene, brush); + } + + ED_view3d_init_mats_rv3d(ob, ar->regiondata); + + if (data.is_init) { + data.vert_visit = BLI_BITMAP_NEW(me->totvert, __func__); + + dm->foreachMappedVert(dm, gradientVertInit__mapFunc, &data, DM_FOREACH_NOP); + + MEM_freeN(data.vert_visit); + data.vert_visit = NULL; + } + else { + dm->foreachMappedVert(dm, gradientVertUpdate__mapFunc, &data, DM_FOREACH_NOP); + } + + DEG_id_tag_update(&ob->id, OB_RECALC_DATA); + WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob); + + if (is_interactive == false) { + MEM_freeN(vert_cache); + } + + return OPERATOR_FINISHED; +} + +static int paint_weight_gradient_invoke(bContext *C, wmOperator *op, const wmEvent *event) +{ + int ret; + + if (ED_wpaint_ensure_data(C, op->reports, 0, NULL) == false) { + return OPERATOR_CANCELLED; + } + + ret = WM_gesture_straightline_invoke(C, op, event); + if (ret & OPERATOR_RUNNING_MODAL) { + struct ARegion *ar = CTX_wm_region(C); + if (ar->regiontype == RGN_TYPE_WINDOW) { + /* TODO, hardcoded, extend WM_gesture_straightline_ */ + if (event->type == LEFTMOUSE && event->val == KM_PRESS) { + wmGesture *gesture = op->customdata; + gesture->mode = 1; + } + } + } + return ret; +} + +void PAINT_OT_weight_gradient(wmOperatorType *ot) +{ + /* defined in DNA_space_types.h */ + static EnumPropertyItem gradient_types[] = { + {WPAINT_GRADIENT_TYPE_LINEAR, "LINEAR", 0, "Linear", ""}, + {WPAINT_GRADIENT_TYPE_RADIAL, "RADIAL", 0, "Radial", ""}, + {0, NULL, 0, NULL, NULL} + }; + + PropertyRNA *prop; + + /* identifiers */ + ot->name = "Weight Gradient"; + ot->idname = "PAINT_OT_weight_gradient"; + ot->description = "Draw a line to apply a weight gradient to selected vertices"; + + /* api callbacks */ + ot->invoke = paint_weight_gradient_invoke; + ot->modal = paint_weight_gradient_modal; + ot->exec = paint_weight_gradient_exec; + ot->poll = weight_paint_poll; + ot->cancel = WM_gesture_straightline_cancel; + + /* flags */ + ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO; + + prop = RNA_def_enum(ot->srna, "type", gradient_types, 0, "Type", ""); + RNA_def_property_flag(prop, PROP_SKIP_SAVE); + + WM_operator_properties_gesture_straightline(ot, CURSOR_EDIT); +} + +/** \} */ |