Differential D2060 Diff 6974 source/blender/modifiers/intern/MOD_meshsequencecache.c

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source/blender/modifiers/intern/MOD_meshsequencecache.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.
				*
				* Contributor(s): Campbell Barton
				*
				* *** END GPL LICENSE BLOCK ***
				*/

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

				#include "DNA_cachefile_types.h"
				#include "DNA_modifier_types.h"
				#include "DNA_object_types.h"
				#include "DNA_scene_types.h"

				#include "BKE_cachefile.h"
				#include "BKE_DerivedMesh.h"
				#include "BKE_library.h"
				#include "BKE_library_query.h"
				#include "BKE_scene.h"

				#include "MOD_modifiertypes.h"

				#ifdef WITH_ALEMBIC
				# include "ABC_alembic.h"
				#endif

				static void initData(ModifierData *md)
				{
				MeshSeqCacheModifierData mcmd = (MeshSeqCacheModifierData )md;

				mcmd->cache_file = NULL;
				mcmd->abc_object_path[0] = '\0';
				}

				static void copyData(ModifierData md, ModifierData target)
				{
				#if 0
				MeshSeqCacheModifierData mcmd = (MeshSeqCacheModifierData )md;
				#endif
				MeshSeqCacheModifierData tmcmd = (MeshSeqCacheModifierData )target;

				modifier_copyData_generic(md, target);

				if (tmcmd->cache_file) {
				id_us_plus(&tmcmd->cache_file->id);
				}
				}

				static void freeData(ModifierData *md)
				{
				MeshSeqCacheModifierData mcmd = (MeshSeqCacheModifierData ) md;

				if (mcmd->cache_file) {
				id_us_min(&mcmd->cache_file->id);
				}
				}

				static bool isDisabled(ModifierData *md, int UNUSED(useRenderParams))
				{
				MeshSeqCacheModifierData mcmd = (MeshSeqCacheModifierData ) md;

				/* leave it up to the modifier to check the file is valid on calculation */
				return (mcmd->cache_file == NULL) \|\| (mcmd->abc_object_path[0] == '\0');
				}

				static DerivedMesh applyModifier(ModifierData md, Object *ob,
				DerivedMesh *dm,
				ModifierApplyFlag flag)
				{
				#ifdef WITH_ALEMBIC
				MeshSeqCacheModifierData mcmd = (MeshSeqCacheModifierData ) md;

				Scene *scene = md->scene;
				const float frame = BKE_scene_frame_get(scene);
				const float time = BKE_cachefile_time_offset(mcmd->cache_file, frame / FPS);

				DerivedMesh *result = ABC_read_mesh(mcmd->cache_file->handle,
				dm,
				mcmd->abc_object_path,
				time);

				return result ? result : dm;
				UNUSED_VARS(ob, flag);
				#else
				return dm;
				UNUSED_VARS(md, ob, flag);
				#endif
				}

				static bool dependsOnTime(ModifierData *md)
				{
				UNUSED_VARS(md);
				return true;
				}

				static void foreachIDLink(ModifierData md, Object ob,
				IDWalkFunc walk, void *userData)
				{
				MeshSeqCacheModifierData mcmd = (MeshSeqCacheModifierData ) md;

				walk(userData, ob, (ID **)&mcmd->cache_file, IDWALK_USER);
				}

				ModifierTypeInfo modifierType_MeshSequenceCache = {
				/* name */ "Mesh Sequence Cache",
				/* structName */ "MeshSeqCacheModifierData",
				/* structSize */ sizeof(MeshSeqCacheModifierData),
				/* type */ eModifierTypeType_Constructive,
				/* flags */ eModifierTypeFlag_AcceptsMesh \|
				eModifierTypeFlag_AcceptsCVs,
				/* copyData */ copyData,
				/* deformVerts */ NULL,
				/* deformMatrices */ NULL,
				/* deformVertsEM */ NULL,
				/* deformMatricesEM */ NULL,
				/* applyModifier */ applyModifier,
				/* applyModifierEM */ NULL,
				/* initData */ initData,
				/* requiredDataMask */ NULL,
				/* freeData */ freeData,
				/* isDisabled */ isDisabled,
				/* updateDepgraph */ NULL,
				/* updateDepsgraph */ NULL,
				/* dependsOnTime */ dependsOnTime,
				/* dependsOnNormals */ NULL,
				/* foreachObjectLink */ NULL,
				/* foreachIDLink */ foreachIDLink,
				/* foreachTexLink */ NULL,
				};