Differential D2889 Diff 9436 source/blender/modifiers/intern/MOD_gpencillattice.c

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source/blender/modifiers/intern/MOD_gpencillattice.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) 2005 by the Blender Foundation.
				* All rights reserved.
				*
				* Contributor(s): Antonio Vazquez
				*
				* *** END GPL LICENSE BLOCK ***
				*
				*/

				/** \file blender/modifiers/intern/MOD_gpencillattice.c
				* \ingroup modifiers
				*/

				#include <stdio.h>

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

				#include "BLI_utildefines.h"

				#include "BKE_context.h"
				#include "BKE_DerivedMesh.h"
				#include "BKE_gpencil.h"
				#include "BKE_lattice.h"
				#include "BKE_library_query.h"
				#include "BKE_scene.h"
				#include "BKE_main.h"

				#include "MEM_guardedalloc.h"

				#include "MOD_modifiertypes.h"

				#include "DEG_depsgraph.h"

				static void initData(ModifierData *md)
				{
				GpencilLatticeModifierData gpmd = (GpencilLatticeModifierData )md;
				gpmd->passindex = 0;
				gpmd->layername[0] = '\0';
				gpmd->vgname[0] = '\0';
				gpmd->object = NULL;
				gpmd->cache_data = NULL;
				gpmd->strength = 1.0f;

				BKE_gpencil_batch_cache_alldirty();
				}

				static void copyData(ModifierData md, ModifierData target)
				{
				modifier_copyData_generic(md, target);
				}

				static DerivedMesh applyModifier(ModifierData md, const struct EvaluationContext eval_ctx, Object ob,
				DerivedMesh *UNUSED(dm),
				ModifierApplyFlag UNUSED(flag))
				{
				GpencilLatticeModifierData mmd = (GpencilLatticeModifierData )md;
				LatticeDeformData *ldata = NULL;
				Scene *scene = CTX_data_scene(mmd->C);
				Main *bmain = CTX_data_main(mmd->C);
				campbellbartonUnsubmitted Not Done Inline Actions This should use `md->scene` campbellbarton: This should use `md->scene`
				bGPdata *gpd;
				Object *latob = NULL;
				int oldframe = CFRA;

				if ((!ob) \|\| (!ob->gpd)) {
				return NULL;
				}
				gpd = ob->gpd;
				latob = mmd->object;
				if ((!latob) \|\| (latob->type != OB_LATTICE)) {
				return NULL;
				}

				struct EvaluationContext eval_ctx_copy = *eval_ctx;

				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) {
				CFRA = gpf->framenum;
				BKE_scene_update_for_newframe(&eval_ctx_copy, bmain, scene);
				sergeyUnsubmitted Not Done Inline Actions You can not do this. Period. You must not modify global state from inside modifier. And should not re-calculate the whole scene for a single object. This will get unusably slow when you try to apply lattice modifier in a scene with 10s of characters. Not only you're modifying global state, you're also leaving it in a broken state (scene evaluated for a wrong frame). sergey: You can not do this. Period. You must not modify global state from inside modifier. And should…
				/* recalculate lattice data */
				BKE_gpencil_lattice_init(ob);

				BKE_gpencil_lattice_modifier(-1, (GpencilLatticeModifierData *)md, ob, gpl, gps);
				}
				}
				}

				campbellbartonUnsubmitted Not Done Inline Actions Doing update for new frame within a modifier is highly likely to cause problems. campbellbarton: Doing update for new frame //within// a modifier is highly likely to cause problems.
				antoniovAuthorUnsubmitted Not Done Inline Actions This is only done when apply, not in every drawing cycle. antoniov: This is only done when apply, not in every drawing cycle.
				ldata = (LatticeDeformData *)mmd->cache_data;
				if (ldata) {
				end_latt_deform(ldata);
				mmd->cache_data = NULL;
				}

				CFRA = oldframe;
				return NULL;
				}

				static void freeData(ModifierData *md)
				{
				GpencilLatticeModifierData mmd = (GpencilLatticeModifierData )md;
				LatticeDeformData ldata = (LatticeDeformData )mmd->cache_data;
				/* free deform data */
				if (ldata) {
				end_latt_deform(ldata);
				}
				}

				static bool isDisabled(ModifierData *md, int UNUSED(userRenderParams))
				{
				GpencilLatticeModifierData mmd = (GpencilLatticeModifierData )md;

				return !mmd->object;
				}

				static void foreachObjectLink(
				ModifierData md, Object ob,
				ObjectWalkFunc walk, void *userData)
				{
				GpencilLatticeModifierData mmd = (GpencilLatticeModifierData )md;

				walk(userData, ob, &mmd->object, IDWALK_CB_NOP);
				}

				ModifierTypeInfo modifierType_GpencilLattice = {
				/* name */ "Lattice",
				/* structName */ "GpencilLatticeModifierData",
				/* structSize */ sizeof(GpencilLatticeModifierData),
				/* type */ eModifierTypeType_Gpencil,
				/* flags */ eModifierTypeFlag_GpencilMod \| eModifierTypeFlag_Single \| eModifierTypeFlag_SupportsEditmode,

				/* copyData */ copyData,
				/* deformVerts */ NULL,
				/* deformMatrices */ NULL,
				/* deformVertsEM */ NULL,
				/* deformMatricesEM */ NULL,
				/* applyModifier */ applyModifier,
				/* applyModifierEM */ NULL,
				/* initData */ initData,
				/* requiredDataMask */ NULL,
				/* freeData */ freeData,
				/* isDisabled */ isDisabled,
				/* updateDepsgraph */ NULL,
				/* dependsOnTime */ NULL,
				/* dependsOnNormals */ NULL,
				/* foreachObjectLink */ foreachObjectLink,
				/* foreachIDLink */ NULL,
				/* foreachTexLink */ NULL,
				};