Differential D2889 Diff 11288 source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c

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source/blender/gpencil_modifiers/intern/MOD_gpencilopacity.c

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				/*
				* *** 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/modifiers/intern/MOD_gpencilopacity.c
				* \ingroup modifiers
				*/

				#include <stdio.h>

				#include "BLI_blenlib.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 "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';
				}

				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;
				MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1);
				int vindex = defgroup_name_index(ob, mmd->vgname);

				if (!is_stroke_affected_by_modifier(
				ob,
				mmd->layername, mmd->pass_index, 3, gpl, gps,
				mmd->flag & GP_OPACITY_INVERT_LAYER, mmd->flag & GP_OPACITY_INVERT_PASS))
				{
				return;
				}

				gp_style->fill_rgba[3]*= mmd->factor;

				/* if factor is > 1, then force opacity */
				if (mmd->factor > 1.0f) {
				gp_style->stroke_rgba[3] += mmd->factor - 1.0f;
				if (gp_style->fill_rgba[3] > 1e-5) {
				gp_style->fill_rgba[3] += mmd->factor - 1.0f;
				}
				}

				CLAMP(gp_style->stroke_rgba[3], 0.0f, 1.0f);
				CLAMP(gp_style->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);
				}
				}
				else {
				for (int i = 0; i < gps->totpoints; i++) {
				bGPDspoint *pt = &gps->points[i];
				MDeformVert *dvert = &gps->dvert[i];

				/* verify vertex group */
				if (mmd->vgname == NULL) {
				pt->strength *= mmd->factor;
				}
				else {
				float weight = get_modifier_point_weight(dvert, (!(mmd->flag & GP_OPACITY_INVERT_VGROUP) == 0), vindex);
				if (weight >= 0) {
				pt->strength = mmd->factor weight;
				}
				}
				CLAMP(pt->strength, 0.0f, 1.0f);
				}
				}

				}

				static void bakeModifier(
				struct Main UNUSED(bmain), Depsgraph depsgraph,
				GpencilModifierData md, Object ob)
				{
				bGPdata *gpd = ob->data;

				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) {
				deformStroke(md, depsgraph, ob, gpl, gps);
				}
				}
				}
				}

				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,
				};