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

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source/blender/gpencil_modifiers/intern/MOD_gpenciltint.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_gpenciltint.c
				* \ingroup modifiers
				*/

				#include <stdio.h>

				#include "DNA_scene_types.h"
				#include "DNA_object_types.h"
				#include "DNA_gpencil_types.h"
				#include "DNA_gpencil_modifier_types.h"

				#include "BLI_blenlib.h"
				#include "BLI_ghash.h"
				#include "BLI_math_vector.h"
				#include "BLI_utildefines.h"

				#include "BKE_context.h"
				#include "BKE_global.h"
				#include "BKE_gpencil.h"
				#include "BKE_gpencil_modifier.h"
				#include "BKE_material.h"
				#include "BKE_main.h"

				#include "DEG_depsgraph.h"

				#include "MOD_gpencil_util.h"
				#include "MOD_gpencil_modifiertypes.h"

				static void initData(GpencilModifierData *md)
				{
				TintGpencilModifierData gpmd = (TintGpencilModifierData )md;
				gpmd->pass_index = 0;
				gpmd->factor = 0.5f;
				gpmd->layername[0] = '\0';
				ARRAY_SET_ITEMS(gpmd->rgb, 1.0f, 1.0f, 1.0f);
				gpmd->flag \|= GP_TINT_CREATE_COLORS;
				}

				static void copyData(const GpencilModifierData md, GpencilModifierData target)
				{
				BKE_gpencil_modifier_copyData_generic(md, target);
				}

				/* tint strokes */
				static void deformStroke(
				GpencilModifierData md, Depsgraph UNUSED(depsgraph),
				Object ob, bGPDlayer gpl, bGPDstroke *gps)
				{
				TintGpencilModifierData mmd = (TintGpencilModifierData )md;

				if (!is_stroke_affected_by_modifier(ob,
				mmd->layername, mmd->pass_index, 1, gpl, gps,
				mmd->flag & GP_TINT_INVERT_LAYER, mmd->flag & GP_TINT_INVERT_PASS))
				{
				return;
				}

				interp_v3_v3v3(gps->runtime.tmp_stroke_rgba, gps->runtime.tmp_stroke_rgba, mmd->rgb, mmd->factor);
				interp_v3_v3v3(gps->runtime.tmp_fill_rgba, gps->runtime.tmp_fill_rgba, mmd->rgb, mmd->factor);

				/* if factor is > 1, the alpha must be changed to get full tint */
				if (mmd->factor > 1.0f) {
				gps->runtime.tmp_stroke_rgba[3] += mmd->factor - 1.0f;
				if (gps->runtime.tmp_fill_rgba[3] > 1e-5) {
				gps->runtime.tmp_fill_rgba[3] += mmd->factor - 1.0f;
				}
				}

				CLAMP4(gps->runtime.tmp_stroke_rgba, 0.0f, 1.0f);
				CLAMP4(gps->runtime.tmp_fill_rgba, 0.0f, 1.0f);

				/* if factor > 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];
				pt->strength += mmd->factor - 1.0f;
				CLAMP(pt->strength, 0.0f, 1.0f);
				}
				}
				}

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

				GHash *gh_color = BLI_ghash_str_new("GP_Tint 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);

				/* look for color */
				if (mmd->flag & GP_TINT_CREATE_COLORS) {
				Material newmat = (Material )BLI_ghash_lookup(gh_color, mat->id.name);
				if (newmat == NULL) {
				BKE_object_material_slot_add(bmain, ob);
				newmat = BKE_material_copy(bmain, mat);
				assign_material(bmain, ob, newmat, ob->totcol, BKE_MAT_ASSIGN_EXISTING);

				copy_v4_v4(newmat->gp_style->stroke_rgba, gps->runtime.tmp_stroke_rgba);
				copy_v4_v4(newmat->gp_style->fill_rgba, gps->runtime.tmp_fill_rgba);

				BLI_ghash_insert(gh_color, mat->id.name, newmat);
				}
				/* reasign color index */
				int idx = BKE_object_material_slot_find_index(ob, newmat);
				gps->mat_nr = idx - 1;
				}
				else {
				/* reuse existing color */
				copy_v4_v4(gp_style->stroke_rgba, gps->runtime.tmp_stroke_rgba);
				copy_v4_v4(gp_style->fill_rgba, gps->runtime.tmp_fill_rgba);
				}

				deformStroke(md, depsgraph, ob, gpl, gps);
				}
				}
				}
				/* free hash buffers */
				if (gh_color) {
				BLI_ghash_free(gh_color, NULL, NULL);
				gh_color = NULL;
				}
				}

				GpencilModifierTypeInfo modifierType_Gpencil_Tint = {
				/* name */ "Tint",
				/* structName */ "TintGpencilModifierData",
				/* structSize */ sizeof(TintGpencilModifierData),
				/* 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,
				};