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

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source/blender/gpencil_modifiers/intern/MOD_gpencilsubdiv.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_gpencilsubdiv.c
				* \ingroup modifiers
				*/

				#include <stdio.h>

				#include "MEM_guardedalloc.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 "BLI_math.h"
				#include "BLI_utildefines.h"

				#include "BKE_context.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)
				{
				SubdivGpencilModifierData gpmd = (SubdivGpencilModifierData )md;
				gpmd->pass_index = 0;
				gpmd->level = 1;
				gpmd->layername[0] = '\0';
				}

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

				/* subdivide stroke to get more control points */
				static void deformStroke(
				GpencilModifierData md, Depsgraph UNUSED(depsgraph),
				Object ob, bGPDlayer gpl, bGPDstroke *gps)
				{
				SubdivGpencilModifierData mmd = (SubdivGpencilModifierData )md;
				bGPDspoint *temp_points;
				int totnewpoints, oldtotpoints;
				int i2;

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

				/* loop as many times as levels */
				for (int s = 0; s < mmd->level; s++) {
				totnewpoints = gps->totpoints - 1;
				/* duplicate points in a temp area */
				temp_points = MEM_dupallocN(gps->points);
				oldtotpoints = gps->totpoints;

				/* resize the points arrys */
				gps->totpoints += totnewpoints;
				gps->points = MEM_recallocN(gps->points, sizeof(gps->points) gps->totpoints);
				gps->dvert = MEM_recallocN(gps->dvert, sizeof(gps->dvert) gps->totpoints);
				gps->flag \|= GP_STROKE_RECALC_CACHES;

				/* move points from last to first to new place */
				i2 = gps->totpoints - 1;
				for (int i = oldtotpoints - 1; i > 0; i--) {
				bGPDspoint *pt = &temp_points[i];
				bGPDspoint *pt_final = &gps->points[i2];

				MDeformVert *dvert = &gps->dvert[i];
				MDeformVert *dvert_final = &gps->dvert[i2];

				copy_v3_v3(&pt_final->x, &pt->x);
				pt_final->pressure = pt->pressure;
				pt_final->strength = pt->strength;
				pt_final->time = pt->time;
				pt_final->flag = pt->flag;

				dvert_final->totweight = dvert->totweight;
				dvert_final->dw = dvert->dw;
				i2 -= 2;
				}
				/* interpolate mid points */
				i2 = 1;
				for (int i = 0; i < oldtotpoints - 1; i++) {
				bGPDspoint *pt = &temp_points[i];
				bGPDspoint *next = &temp_points[i + 1];
				bGPDspoint *pt_final = &gps->points[i2];
				MDeformVert *dvert_final = &gps->dvert[i2];

				/* add a half way point */
				interp_v3_v3v3(&pt_final->x, &pt->x, &next->x, 0.5f);
				pt_final->pressure = interpf(pt->pressure, next->pressure, 0.5f);
				pt_final->strength = interpf(pt->strength, next->strength, 0.5f);
				CLAMP(pt_final->strength, GPENCIL_STRENGTH_MIN, 1.0f);
				pt_final->time = interpf(pt->time, next->time, 0.5f);

				dvert_final->totweight = 0;
				dvert_final->dw = NULL;
				i2 += 2;
				}

				MEM_SAFE_FREE(temp_points);

				/* move points to smooth stroke (not simple flag )*/
				if ((mmd->flag & GP_SUBDIV_SIMPLE) == 0) {
				/* duplicate points in a temp area with the new subdivide data */
				temp_points = MEM_dupallocN(gps->points);

				/* extreme points are not changed */
				for (int i = 0; i < gps->totpoints - 2; i++) {
				bGPDspoint *pt = &temp_points[i];
				bGPDspoint *next = &temp_points[i + 1];
				bGPDspoint *pt_final = &gps->points[i + 1];

				/* move point */
				interp_v3_v3v3(&pt_final->x, &pt->x, &next->x, 0.5f);
				}
				/* free temp memory */
				MEM_SAFE_FREE(temp_points);
				}
				}
				}

				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_Subdiv = {
				/* name */ "Subdivision",
				/* structName */ "SubdivGpencilModifierData",
				/* structSize */ sizeof(SubdivGpencilModifierData),
				/* 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,
				};