diff options
Diffstat (limited to 'source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c')
| -rw-r--r-- | source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c b/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c new file mode 100644 index 00000000000..e0484e19959 --- /dev/null +++ b/source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c @@ -0,0 +1,183 @@ +/* + * ***** 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. + * + * The Original Code is Copyright (C) 2017, Blender Foundation + * This is a new part of Blender + * + * Contributor(s): Antonio Vazquez + * + * ***** END GPL LICENSE BLOCK ***** + * + */ + +/** \file blender/gpencil_modifiers/intern/MOD_gpencilopacity.c + * \ingroup modifiers + */ + +#include <stdio.h> + +#include "BLI_blenlib.h" +#include "BLI_ghash.h" +#include "BLI_math_vector.h" +#include "BLI_utildefines.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 "BKE_context.h" +#include "BKE_deform.h" +#include "BKE_material.h" +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" +#include "BKE_main.h" + +#include "DEG_depsgraph.h" + +#include "MOD_gpencil_util.h" +#include "MOD_gpencil_modifiertypes.h" + +static void initData(GpencilModifierData *md) +{ + OpacityGpencilModifierData *gpmd = (OpacityGpencilModifierData *)md; + gpmd->pass_index = 0; + gpmd->factor = 1.0f; + gpmd->layername[0] = '\0'; + gpmd->vgname[0] = '\0'; + gpmd->flag |= GP_OPACITY_CREATE_COLORS; + gpmd->modify_color = GP_MODIFY_COLOR_BOTH; +} + +static void copyData(const GpencilModifierData *md, GpencilModifierData *target) +{ + BKE_gpencil_modifier_copyData_generic(md, target); +} + +/* opacity strokes */ +static void deformStroke( + GpencilModifierData *md, Depsgraph *UNUSED(depsgraph), + Object *ob, bGPDlayer *gpl, bGPDstroke *gps) +{ + OpacityGpencilModifierData *mmd = (OpacityGpencilModifierData *)md; + int vindex = defgroup_name_index(ob, mmd->vgname); + + if (!is_stroke_affected_by_modifier( + ob, + mmd->layername, mmd->pass_index, 1, gpl, gps, + mmd->flag & GP_OPACITY_INVERT_LAYER, mmd->flag & GP_OPACITY_INVERT_PASS)) + { + return; + } + + if (mmd->modify_color != GP_MODIFY_COLOR_FILL) { + gps->runtime.tmp_stroke_rgba[3] *= mmd->factor; + /* if factor is > 1, then force opacity */ + if (mmd->factor > 1.0f) { + gps->runtime.tmp_stroke_rgba[3] += mmd->factor - 1.0f; + } + CLAMP(gps->runtime.tmp_stroke_rgba[3], 0.0f, 1.0f); + } + + if (mmd->modify_color != GP_MODIFY_COLOR_STROKE) { + gps->runtime.tmp_fill_rgba[3] *= mmd->factor; + /* if factor is > 1, then force opacity */ + if (mmd->factor > 1.0f && gps->runtime.tmp_fill_rgba[3] > 1e-5) { + gps->runtime.tmp_fill_rgba[3] += mmd->factor - 1.0f; + } + CLAMP(gps->runtime.tmp_fill_rgba[3], 0.0f, 1.0f); + } + + /* if opacity > 1.0, affect the strength of the stroke */ + if (mmd->factor > 1.0f) { + for (int i = 0; i < gps->totpoints; i++) { + bGPDspoint *pt = &gps->points[i]; + MDeformVert *dvert = &gps->dvert[i]; + + /* verify vertex group */ + float weight = get_modifier_point_weight(dvert, ((mmd->flag & GP_OPACITY_INVERT_VGROUP) != 0), vindex); + if (weight < 0) { + pt->strength += mmd->factor - 1.0f; + } + else { + pt->strength += (mmd->factor - 1.0f) * weight; + } + CLAMP(pt->strength, 0.0f, 1.0f); + } + } +} + +static void bakeModifier( + Main *bmain, Depsgraph *depsgraph, + GpencilModifierData *md, Object *ob) +{ + OpacityGpencilModifierData *mmd = (OpacityGpencilModifierData *)md; + bGPdata *gpd = ob->data; + + GHash *gh_color = BLI_ghash_str_new("GP_Opacity modifier"); + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + for (bGPDframe *gpf = gpl->frames.first; gpf; gpf = gpf->next) { + for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) { + + Material *mat = give_current_material(ob, gps->mat_nr + 1); + if (mat == NULL) + continue; + MaterialGPencilStyle *gp_style = mat->gp_style; + /* skip stroke if it doesn't have color info */ + if (ELEM(NULL, gp_style)) + continue; + + copy_v4_v4(gps->runtime.tmp_stroke_rgba, gp_style->stroke_rgba); + copy_v4_v4(gps->runtime.tmp_fill_rgba, gp_style->fill_rgba); + + deformStroke(md, depsgraph, ob, gpl, gps); + + gpencil_apply_modifier_material(bmain, ob, mat, gh_color, gps, + (bool)(mmd->flag & GP_OPACITY_CREATE_COLORS)); + } + } + } + /* free hash buffers */ + if (gh_color) { + BLI_ghash_free(gh_color, NULL, NULL); + gh_color = NULL; + } +} + +GpencilModifierTypeInfo modifierType_Gpencil_Opacity = { + /* name */ "Opacity", + /* structName */ "OpacityGpencilModifierData", + /* structSize */ sizeof(OpacityGpencilModifierData), + /* type */ eGpencilModifierTypeType_Gpencil, + /* flags */ eGpencilModifierTypeFlag_SupportsEditmode, + + /* copyData */ copyData, + + /* deformStroke */ deformStroke, + /* generateStrokes */ NULL, + /* bakeModifier */ bakeModifier, + + /* initData */ initData, + /* freeData */ NULL, + /* isDisabled */ NULL, + /* updateDepsgraph */ NULL, + /* dependsOnTime */ NULL, + /* foreachObjectLink */ NULL, + /* foreachIDLink */ NULL, + /* foreachTexLink */ NULL, +}; |