diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpencilvertexcolor.c')
| -rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpencilvertexcolor.c | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilvertexcolor.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilvertexcolor.c new file mode 100644 index 00000000000..b279d90dd4f --- /dev/null +++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilvertexcolor.c @@ -0,0 +1,314 @@ +/* + * 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. + * + * The Original Code is Copyright (C) 2017, Blender Foundation + * This is a new part of Blender + */ + +/** \file + * \ingroup modifiers + */ + +#include <stdio.h> + +#include "BLI_utildefines.h" + +#include "BLI_math.h" +#include "BLI_listbase.h" + +#include "DNA_meshdata_types.h" +#include "DNA_scene_types.h" +#include "DNA_object_types.h" +#include "DNA_gpencil_types.h" +#include "DNA_gpencil_modifier_types.h" +#include "DNA_modifier_types.h" + +#include "BKE_action.h" +#include "BKE_colorband.h" +#include "BKE_colortools.h" +#include "BKE_deform.h" +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" +#include "BKE_layer.h" +#include "BKE_lib_query.h" +#include "BKE_main.h" +#include "BKE_material.h" +#include "BKE_modifier.h" +#include "BKE_scene.h" + +#include "MEM_guardedalloc.h" + +#include "MOD_gpencil_util.h" +#include "MOD_gpencil_modifiertypes.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_build.h" +#include "DEG_depsgraph_query.h" + +static void initData(GpencilModifierData *md) +{ + VertexcolorGpencilModifierData *gpmd = (VertexcolorGpencilModifierData *)md; + gpmd->pass_index = 0; + gpmd->layername[0] = '\0'; + gpmd->materialname[0] = '\0'; + gpmd->vgname[0] = '\0'; + gpmd->object = NULL; + gpmd->radius = 1.0f; + gpmd->factor = 1.0f; + + /* Add default color ramp. */ + gpmd->colorband = BKE_colorband_add(false); + if (gpmd->colorband) { + BKE_colorband_init(gpmd->colorband, true); + CBData *ramp = gpmd->colorband->data; + ramp[0].r = ramp[0].g = ramp[0].b = ramp[0].a = 1.0f; + ramp[0].pos = 0.0f; + ramp[1].r = ramp[1].g = ramp[1].b = 0.0f; + ramp[1].a = 1.0f; + ramp[1].pos = 1.0f; + + gpmd->colorband->tot = 2; + } + + gpmd->curve_intensity = BKE_curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); + if (gpmd->curve_intensity) { + CurveMapping *curve = gpmd->curve_intensity; + BKE_curvemapping_initialize(curve); + } +} + +static void copyData(const GpencilModifierData *md, GpencilModifierData *target) +{ + VertexcolorGpencilModifierData *gmd = (VertexcolorGpencilModifierData *)md; + VertexcolorGpencilModifierData *tgmd = (VertexcolorGpencilModifierData *)target; + + MEM_SAFE_FREE(tgmd->colorband); + + if (tgmd->curve_intensity != NULL) { + BKE_curvemapping_free(tgmd->curve_intensity); + tgmd->curve_intensity = NULL; + } + + BKE_gpencil_modifier_copyData_generic(md, target); + + if (gmd->colorband) { + tgmd->colorband = MEM_dupallocN(gmd->colorband); + } + + tgmd->curve_intensity = BKE_curvemapping_copy(gmd->curve_intensity); +} + +/* deform stroke */ +static void deformStroke(GpencilModifierData *md, + Depsgraph *UNUSED(depsgraph), + Object *ob, + bGPDlayer *gpl, + bGPDframe *UNUSED(gpf), + bGPDstroke *gps) +{ + VertexcolorGpencilModifierData *mmd = (VertexcolorGpencilModifierData *)md; + if (!mmd->object) { + return; + } + + const int def_nr = BKE_object_defgroup_name_index(ob, mmd->vgname); + const bool use_curve = (mmd->flag & GP_VERTEXCOL_CUSTOM_CURVE) != 0 && mmd->curve_intensity; + + if (!is_stroke_affected_by_modifier(ob, + mmd->layername, + mmd->materialname, + mmd->pass_index, + mmd->layer_pass, + 1, + gpl, + gps, + mmd->flag & GP_VERTEXCOL_INVERT_LAYER, + mmd->flag & GP_VERTEXCOL_INVERT_PASS, + mmd->flag & GP_VERTEXCOL_INVERT_LAYERPASS, + mmd->flag & GP_VERTEXCOL_INVERT_MATERIAL)) { + return; + } + MaterialGPencilStyle *gp_style = BKE_gpencil_material_settings(ob, gps->mat_nr + 1); + + float coba_res[4]; + float matrix[4][4]; + mul_m4_m4m4(matrix, mmd->object->imat, ob->obmat); + + /* loop points and apply deform */ + bool fill_done = false; + for (int i = 0; i < gps->totpoints; i++) { + bGPDspoint *pt = &gps->points[i]; + MDeformVert *dvert = gps->dvert != NULL ? &gps->dvert[i] : NULL; + + if (!fill_done) { + /* Apply to fill. */ + if (mmd->mode != GPPAINT_MODE_STROKE) { + + /* If not using Vertex Color, use the material color. */ + if ((gp_style != NULL) && (gps->vert_color_fill[3] == 0.0f) && + (gp_style->fill_rgba[3] > 0.0f)) { + copy_v4_v4(gps->vert_color_fill, gp_style->fill_rgba); + gps->vert_color_fill[3] = 1.0f; + } + + float center[3]; + add_v3_v3v3(center, gps->boundbox_min, gps->boundbox_max); + mul_v3_fl(center, 0.5f); + float pt_loc[3]; + mul_v3_m4v3(pt_loc, matrix, &pt->x); + float dist = len_v3(pt_loc); + float mix_factor = clamp_f(dist / mmd->radius, 0.0f, 1.0f); + + BKE_colorband_evaluate(mmd->colorband, mix_factor, coba_res); + interp_v3_v3v3(gps->vert_color_fill, gps->vert_color_fill, coba_res, mmd->factor); + gps->vert_color_fill[3] = mmd->factor; + /* If no stroke, cancel loop. */ + if (mmd->mode != GPPAINT_MODE_BOTH) { + break; + } + } + + fill_done = true; + } + + /* Verify vertex group. */ + if (mmd->mode != GPPAINT_MODE_FILL) { + float weight = get_modifier_point_weight( + dvert, (mmd->flag & GP_VERTEXCOL_INVERT_VGROUP) != 0, def_nr); + if (weight < 0.0f) { + continue; + } + /* Custom curve to modulate value. */ + if (use_curve) { + float value = (float)i / (gps->totpoints - 1); + weight *= BKE_curvemapping_evaluateF(mmd->curve_intensity, 0, value); + } + + /* Calc world position of point. */ + float pt_loc[3]; + mul_v3_m4v3(pt_loc, matrix, &pt->x); + float dist = len_v3(pt_loc); + + /* If not using Vertex Color, use the material color. */ + if ((gp_style != NULL) && (pt->vert_color[3] == 0.0f) && (gp_style->stroke_rgba[3] > 0.0f)) { + copy_v4_v4(pt->vert_color, gp_style->stroke_rgba); + pt->vert_color[3] = 1.0f; + } + + /* Calc the factor using the distance and get mix color. */ + float mix_factor = clamp_f(dist / mmd->radius, 0.0f, 1.0f); + BKE_colorband_evaluate(mmd->colorband, mix_factor, coba_res); + + interp_v3_v3v3(pt->vert_color, pt->vert_color, coba_res, mmd->factor * weight * coba_res[3]); + } + } +} + +/* FIXME: Ideally we be doing this on a copy of the main depsgraph + * (i.e. one where we don't have to worry about restoring state) + */ +static void bakeModifier(Main *bmain, Depsgraph *depsgraph, GpencilModifierData *md, Object *ob) +{ + VertexcolorGpencilModifierData *mmd = (VertexcolorGpencilModifierData *)md; + Scene *scene = DEG_get_evaluated_scene(depsgraph); + bGPdata *gpd = ob->data; + int oldframe = (int)DEG_get_ctime(depsgraph); + + if (mmd->object == NULL) { + return; + } + + LISTBASE_FOREACH (bGPDlayer *, gpl, &gpd->layers) { + LISTBASE_FOREACH (bGPDframe *, gpf, &gpl->frames) { + /* apply effects on this frame + * NOTE: this assumes that we don't want animation on non-keyframed frames + */ + CFRA = gpf->framenum; + BKE_scene_graph_update_for_newframe(depsgraph, bmain); + + /* compute effects on this frame */ + LISTBASE_FOREACH (bGPDstroke *, gps, &gpf->strokes) { + deformStroke(md, depsgraph, ob, gpl, gpf, gps); + } + } + } + + /* return frame state and DB to original state */ + CFRA = oldframe; + BKE_scene_graph_update_for_newframe(depsgraph, bmain); +} + +static void freeData(GpencilModifierData *md) +{ + VertexcolorGpencilModifierData *mmd = (VertexcolorGpencilModifierData *)md; + if (mmd->colorband) { + MEM_freeN(mmd->colorband); + mmd->colorband = NULL; + } + if (mmd->curve_intensity) { + BKE_curvemapping_free(mmd->curve_intensity); + } +} + +static bool isDisabled(GpencilModifierData *md, int UNUSED(userRenderParams)) +{ + VertexcolorGpencilModifierData *mmd = (VertexcolorGpencilModifierData *)md; + + return !mmd->object; +} + +static void updateDepsgraph(GpencilModifierData *md, const ModifierUpdateDepsgraphContext *ctx) +{ + VertexcolorGpencilModifierData *lmd = (VertexcolorGpencilModifierData *)md; + if (lmd->object != NULL) { + DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_GEOMETRY, "Vertexcolor Modifier"); + DEG_add_object_relation(ctx->node, lmd->object, DEG_OB_COMP_TRANSFORM, "Vertexcolor Modifier"); + } + DEG_add_object_relation(ctx->node, ctx->object, DEG_OB_COMP_TRANSFORM, "Vertexcolor Modifier"); +} + +static void foreachObjectLink(GpencilModifierData *md, + Object *ob, + ObjectWalkFunc walk, + void *userData) +{ + VertexcolorGpencilModifierData *mmd = (VertexcolorGpencilModifierData *)md; + + walk(userData, ob, &mmd->object, IDWALK_CB_NOP); +} + +GpencilModifierTypeInfo modifierType_Gpencil_Vertexcolor = { + /* name */ "Vertex Color", + /* structName */ "VertexcolorGpencilModifierData", + /* structSize */ sizeof(VertexcolorGpencilModifierData), + /* type */ eGpencilModifierTypeType_Gpencil, + /* flags */ eGpencilModifierTypeFlag_SupportsEditmode, + + /* copyData */ copyData, + + /* deformStroke */ deformStroke, + /* generateStrokes */ NULL, + /* bakeModifier */ bakeModifier, + /* remapTime */ NULL, + + /* initData */ initData, + /* freeData */ freeData, + /* isDisabled */ isDisabled, + /* updateDepsgraph */ updateDepsgraph, + /* dependsOnTime */ NULL, + /* foreachObjectLink */ foreachObjectLink, + /* foreachIDLink */ NULL, + /* foreachTexLink */ NULL, +}; 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