Differential D4407 Diff 13850 source/blender/editors/physics/particle_object.c

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source/blender/editors/physics/particle_object.c

Show First 20 Lines • Show All 1,022 Lines • ▼ Show 20 Lines	static bool copy_particle_systems_to_object(const bContext *C,
bool duplicate_settings)		bool duplicate_settings)
{		{
Main *bmain = CTX_data_main(C);		Main *bmain = CTX_data_main(C);
Depsgraph *depsgraph = CTX_data_depsgraph(C);		Depsgraph *depsgraph = CTX_data_depsgraph(C);
ModifierData *md;		ModifierData *md;
ParticleSystem psys_start = NULL, psys, *psys_from;		ParticleSystem psys_start = NULL, psys, *psys_from;
ParticleSystem **tmp_psys;		ParticleSystem **tmp_psys;
Mesh *final_mesh;		Mesh *final_mesh;
CustomDataMask cdmask;		CustomData_Masks cdmask = {0};
int i, totpsys;		int i, totpsys;

if (ob_to->type != OB_MESH)		if (ob_to->type != OB_MESH)
return false;		return false;
if (!ob_to->data \|\| ID_IS_LINKED(ob_to->data))		if (!ob_to->data \|\| ID_IS_LINKED(ob_to->data))
return false;		return false;

/* For remapping we need a valid DM.		/* For remapping we need a valid DM.
* Because the modifiers are appended at the end it's safe to use		* Because the modifiers are appended at the end it's safe to use
* the final DM of the object without particles.		* the final DM of the object without particles.
* However, when evaluating the DM all the particle modifiers must be valid,		* However, when evaluating the DM all the particle modifiers must be valid,
* i.e. have the psys assigned already.		* i.e. have the psys assigned already.
* To break this hen/egg problem we create all psys separately first (to collect required customdata masks),		* To break this hen/egg problem we create all psys separately first (to collect required customdata masks),
* then create the DM, then add them to the object and make the psys modifiers ...		* then create the DM, then add them to the object and make the psys modifiers ...
*/		*/
#define PSYS_FROM_FIRST (single_psys_from ? single_psys_from : ob_from->particlesystem.first)		#define PSYS_FROM_FIRST (single_psys_from ? single_psys_from : ob_from->particlesystem.first)
#define PSYS_FROM_NEXT(cur) (single_psys_from ? NULL : (cur)->next)		#define PSYS_FROM_NEXT(cur) (single_psys_from ? NULL : (cur)->next)
totpsys = single_psys_from ? 1 : BLI_listbase_count(&ob_from->particlesystem);		totpsys = single_psys_from ? 1 : BLI_listbase_count(&ob_from->particlesystem);

tmp_psys = MEM_mallocN(sizeof(ParticleSystem ) totpsys, "temporary particle system array");		tmp_psys = MEM_mallocN(sizeof(ParticleSystem ) totpsys, "temporary particle system array");

cdmask = 0;
for (psys_from = PSYS_FROM_FIRST, i = 0;		for (psys_from = PSYS_FROM_FIRST, i = 0;
psys_from;		psys_from;
psys_from = PSYS_FROM_NEXT(psys_from), ++i)		psys_from = PSYS_FROM_NEXT(psys_from), ++i)
{		{
psys = BKE_object_copy_particlesystem(psys_from, 0);		psys = BKE_object_copy_particlesystem(psys_from, 0);
tmp_psys[i] = psys;		tmp_psys[i] = psys;

if (psys_start == NULL)		if (psys_start == NULL)
psys_start = psys;		psys_start = psys;

cdmask \|= psys_emitter_customdata_mask(psys);		psys_emitter_customdata_mask(psys, &cdmask);
}		}
/* to iterate source and target psys in sync,		/* to iterate source and target psys in sync,
* we need to know where the newly added psys start		* we need to know where the newly added psys start
*/		*/
psys_start = totpsys > 0 ? tmp_psys[0] : NULL;		psys_start = totpsys > 0 ? tmp_psys[0] : NULL;

/* Get the evaluated mesh (psys and their modifiers have not been appended yet) */		/* Get the evaluated mesh (psys and their modifiers have not been appended yet) */
final_mesh = mesh_get_eval_final(depsgraph, scene, ob_to, cdmask);		final_mesh = mesh_get_eval_final(depsgraph, scene, ob_to, cdmask);
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