static Mesh *applyModifier(ModifierData *md, const ModifierEvalContext *ctx, Mesh *mesh)
{
ExplodeModifierData *emd = (ExplodeModifierData *)md;
ParticleSystemModifierData *psmd = findPrecedingParticlesystem(ctx->object, md);
if (psmd) {
ParticleSystem *psys = psmd->psys;
if (psys == NULL || psys->totpart == 0) {
return mesh;
}
if (psys->part == NULL || psys->particles == NULL) {
return mesh;
}
if (psmd->mesh_final == NULL) {
return mesh;
}
BKE_mesh_tessface_ensure(mesh); /* BMESH - UNTIL MODIFIER IS UPDATED FOR MPoly */
/* 1. find faces to be exploded if needed */
if (emd->facepa == NULL || psmd->flag & eParticleSystemFlag_Pars ||
emd->flag & eExplodeFlag_CalcFaces ||
MEM_allocN_len(emd->facepa) / sizeof(int) != mesh->totface) {
if (psmd->flag & eParticleSystemFlag_Pars) {
psmd->flag &= ~eParticleSystemFlag_Pars;
}
if (emd->flag & eExplodeFlag_CalcFaces) {
emd->flag &= ~eExplodeFlag_CalcFaces;
}
createFacepa(emd, psmd, mesh);
}
/* 2. create new mesh */
Scene *scene = DEG_get_evaluated_scene(ctx->depsgraph);
if (emd->flag & eExplodeFlag_EdgeCut) {
int *facepa = emd->facepa;
Mesh *split_m = cutEdges(emd, mesh);
Mesh *explode = explodeMesh(emd, psmd, ctx, scene, split_m);
MEM_freeN(emd->facepa);
emd->facepa = facepa;
BKE_id_free(NULL, split_m);
return explode;
}
else {
return explodeMesh(emd, psmd, ctx, scene, mesh);
}
}
return mesh;
}
static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
DerivedMesh *derivedData,
ModifierApplyFlag UNUSED(flag))
{
DerivedMesh *dm = derivedData;
ExplodeModifierData *emd = (ExplodeModifierData *) md;
ParticleSystemModifierData *psmd = findPrecedingParticlesystem(ob, md);
DM_ensure_tessface(dm); /* BMESH - UNTIL MODIFIER IS UPDATED FOR MPoly */
if (psmd) {
ParticleSystem *psys = psmd->psys;
if (psys == NULL || psys->totpart == 0) return derivedData;
if (psys->part == NULL || psys->particles == NULL) return derivedData;
if (psmd->dm == NULL) return derivedData;
/* 1. find faces to be exploded if needed */
if (emd->facepa == NULL ||
psmd->flag & eParticleSystemFlag_Pars ||
emd->flag & eExplodeFlag_CalcFaces ||
MEM_allocN_len(emd->facepa) / sizeof(int) != dm->getNumTessFaces(dm))
{
if (psmd->flag & eParticleSystemFlag_Pars)
psmd->flag &= ~eParticleSystemFlag_Pars;
if (emd->flag & eExplodeFlag_CalcFaces)
emd->flag &= ~eExplodeFlag_CalcFaces;
createFacepa(emd, psmd, derivedData);
}
/* 2. create new mesh */
if (emd->flag & eExplodeFlag_EdgeCut) {
int *facepa = emd->facepa;
DerivedMesh *splitdm = cutEdges(emd, dm);
DerivedMesh *explode = explodeMesh(emd, psmd, md->scene, ob, splitdm);
MEM_freeN(emd->facepa);
emd->facepa = facepa;
splitdm->release(splitdm);
return explode;
}
else
return explodeMesh(emd, psmd, md->scene, ob, derivedData);
}
return derivedData;
}