246 lines
7.2 KiB
C
246 lines
7.2 KiB
C
/*
|
|
* ***** 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): Daniel Dunbar
|
|
* Ton Roosendaal,
|
|
* Ben Batt,
|
|
* Brecht Van Lommel,
|
|
* Campbell Barton
|
|
*
|
|
* ***** END GPL LICENSE BLOCK *****
|
|
*
|
|
*/
|
|
|
|
/** \file blender/modifiers/intern/MOD_particlesystem.c
|
|
* \ingroup modifiers
|
|
*/
|
|
|
|
|
|
#include <stddef.h>
|
|
|
|
#include "DNA_material_types.h"
|
|
#include "DNA_mesh_types.h"
|
|
|
|
#include "BLI_utildefines.h"
|
|
|
|
|
|
#include "BKE_cdderivedmesh.h"
|
|
#include "BKE_global.h"
|
|
#include "BKE_modifier.h"
|
|
#include "BKE_particle.h"
|
|
|
|
#include "MOD_util.h"
|
|
|
|
|
|
static void initData(ModifierData *md)
|
|
{
|
|
ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
|
|
psmd->psys = NULL;
|
|
psmd->dm_final = NULL;
|
|
psmd->dm_deformed = NULL;
|
|
psmd->totdmvert = psmd->totdmedge = psmd->totdmface = 0;
|
|
}
|
|
static void freeData(ModifierData *md)
|
|
{
|
|
ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
|
|
|
|
if (psmd->dm_final) {
|
|
psmd->dm_final->needsFree = true;
|
|
psmd->dm_final->release(psmd->dm_final);
|
|
psmd->dm_final = NULL;
|
|
if (psmd->dm_deformed) {
|
|
psmd->dm_deformed->needsFree = true;
|
|
psmd->dm_deformed->release(psmd->dm_deformed);
|
|
psmd->dm_deformed = NULL;
|
|
}
|
|
}
|
|
psmd->totdmvert = psmd->totdmedge = psmd->totdmface = 0;
|
|
|
|
/* ED_object_modifier_remove may have freed this first before calling
|
|
* modifier_free (which calls this function) */
|
|
if (psmd->psys)
|
|
psmd->psys->flag |= PSYS_DELETE;
|
|
}
|
|
|
|
static void copyData(const ModifierData *md, ModifierData *target)
|
|
{
|
|
#if 0
|
|
const ParticleSystemModifierData *psmd = (const ParticleSystemModifierData *) md;
|
|
#endif
|
|
ParticleSystemModifierData *tpsmd = (ParticleSystemModifierData *) target;
|
|
|
|
modifier_copyData_generic(md, target);
|
|
|
|
tpsmd->dm_final = NULL;
|
|
tpsmd->dm_deformed = NULL;
|
|
tpsmd->totdmvert = tpsmd->totdmedge = tpsmd->totdmface = 0;
|
|
}
|
|
|
|
static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
|
|
{
|
|
ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
|
|
return psys_emitter_customdata_mask(psmd->psys);
|
|
}
|
|
|
|
/* saves the current emitter state for a particle system and calculates particles */
|
|
static void deformVerts(
|
|
ModifierData *md, Object *ob,
|
|
DerivedMesh *derivedData,
|
|
float (*vertexCos)[3],
|
|
int UNUSED(numVerts),
|
|
ModifierApplyFlag flag)
|
|
{
|
|
DerivedMesh *dm = derivedData;
|
|
ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
|
|
ParticleSystem *psys = NULL;
|
|
bool needsFree = false;
|
|
/* float cfra = BKE_scene_frame_get(md->scene); */ /* UNUSED */
|
|
|
|
if (ob->particlesystem.first)
|
|
psys = psmd->psys;
|
|
else
|
|
return;
|
|
|
|
if (!psys_check_enabled(ob, psys, (flag & MOD_APPLY_RENDER) != 0))
|
|
return;
|
|
|
|
if (dm == NULL) {
|
|
dm = get_dm(ob, NULL, NULL, vertexCos, false, true);
|
|
|
|
if (!dm)
|
|
return;
|
|
|
|
needsFree = true;
|
|
}
|
|
|
|
/* clear old dm */
|
|
if (psmd->dm_final) {
|
|
psmd->dm_final->needsFree = true;
|
|
psmd->dm_final->release(psmd->dm_final);
|
|
if (psmd->dm_deformed) {
|
|
psmd->dm_deformed->needsFree = 1;
|
|
psmd->dm_deformed->release(psmd->dm_deformed);
|
|
psmd->dm_deformed = NULL;
|
|
}
|
|
}
|
|
else if (psmd->flag & eParticleSystemFlag_file_loaded) {
|
|
/* in file read dm just wasn't saved in file so no need to reset everything */
|
|
psmd->flag &= ~eParticleSystemFlag_file_loaded;
|
|
}
|
|
else {
|
|
/* no dm before, so recalc particles fully */
|
|
psys->recalc |= PSYS_RECALC_RESET;
|
|
}
|
|
|
|
/* make new dm */
|
|
psmd->dm_final = CDDM_copy(dm);
|
|
CDDM_apply_vert_coords(psmd->dm_final, vertexCos);
|
|
CDDM_calc_normals(psmd->dm_final);
|
|
|
|
if (needsFree) {
|
|
dm->needsFree = true;
|
|
dm->release(dm);
|
|
}
|
|
|
|
/* protect dm */
|
|
psmd->dm_final->needsFree = false;
|
|
|
|
DM_ensure_tessface(psmd->dm_final);
|
|
|
|
if (!psmd->dm_final->deformedOnly) {
|
|
/* XXX Think we can assume here that if current DM is not only-deformed, ob->deformedOnly has been set.
|
|
* This is awfully weak though. :| */
|
|
if (ob->derivedDeform) {
|
|
psmd->dm_deformed = CDDM_copy(ob->derivedDeform);
|
|
}
|
|
else { /* Can happen in some cases, e.g. when rendering from Edit mode... */
|
|
psmd->dm_deformed = CDDM_from_mesh((Mesh *)ob->data);
|
|
}
|
|
DM_ensure_tessface(psmd->dm_deformed);
|
|
}
|
|
|
|
/* report change in mesh structure */
|
|
if (psmd->dm_final->getNumVerts(psmd->dm_final) != psmd->totdmvert ||
|
|
psmd->dm_final->getNumEdges(psmd->dm_final) != psmd->totdmedge ||
|
|
psmd->dm_final->getNumTessFaces(psmd->dm_final) != psmd->totdmface)
|
|
{
|
|
psys->recalc |= PSYS_RECALC_RESET;
|
|
|
|
psmd->totdmvert = psmd->dm_final->getNumVerts(psmd->dm_final);
|
|
psmd->totdmedge = psmd->dm_final->getNumEdges(psmd->dm_final);
|
|
psmd->totdmface = psmd->dm_final->getNumTessFaces(psmd->dm_final);
|
|
}
|
|
|
|
if (!(ob->transflag & OB_NO_PSYS_UPDATE)) {
|
|
psmd->flag &= ~eParticleSystemFlag_psys_updated;
|
|
particle_system_update(G.main, md->scene, ob, psys, (flag & MOD_APPLY_RENDER) != 0);
|
|
psmd->flag |= eParticleSystemFlag_psys_updated;
|
|
}
|
|
}
|
|
|
|
/* disabled particles in editmode for now, until support for proper derivedmesh
|
|
* updates is coded */
|
|
#if 0
|
|
static void deformVertsEM(
|
|
ModifierData *md, Object *ob, EditMesh *editData,
|
|
DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts)
|
|
{
|
|
DerivedMesh *dm = derivedData;
|
|
|
|
if (!derivedData) dm = CDDM_from_editmesh(editData, ob->data);
|
|
|
|
deformVerts(md, ob, dm, vertexCos, numVerts);
|
|
|
|
if (!derivedData) dm->release(dm);
|
|
}
|
|
#endif
|
|
|
|
|
|
ModifierTypeInfo modifierType_ParticleSystem = {
|
|
/* name */ "ParticleSystem",
|
|
/* structName */ "ParticleSystemModifierData",
|
|
/* structSize */ sizeof(ParticleSystemModifierData),
|
|
/* type */ eModifierTypeType_OnlyDeform,
|
|
/* flags */ eModifierTypeFlag_AcceptsMesh |
|
|
eModifierTypeFlag_SupportsMapping |
|
|
eModifierTypeFlag_UsesPointCache /* |
|
|
eModifierTypeFlag_SupportsEditmode |
|
|
eModifierTypeFlag_EnableInEditmode */,
|
|
|
|
/* copyData */ copyData,
|
|
/* deformVerts */ deformVerts,
|
|
/* deformVertsEM */ NULL,
|
|
/* deformMatrices */ NULL,
|
|
/* deformMatricesEM */ NULL,
|
|
/* applyModifier */ NULL,
|
|
/* applyModifierEM */ NULL,
|
|
/* initData */ initData,
|
|
/* requiredDataMask */ requiredDataMask,
|
|
/* freeData */ freeData,
|
|
/* isDisabled */ NULL,
|
|
/* updateDepgraph */ NULL,
|
|
/* updateDepsgraph */ NULL,
|
|
/* dependsOnTime */ NULL,
|
|
/* dependsOnNormals */ NULL,
|
|
/* foreachObjectLink */ NULL,
|
|
/* foreachIDLink */ NULL,
|
|
/* foreachTexLink */ NULL,
|
|
};
|