Sybren A. Stüvel
def1c3eb4b
There are a few places where DerivedMesh is still used, most notably when calling the (not yet ported) cloth simulation. There is also still the use of Object.derivedDeform and Object.derivedFinal. Those places are marked with a TODO. Some functions in the editors module were copied to accept Mesh. Those already had 'mesh' in the name; the copies are suffixed with '__real_mesh' for easy renaming later when the DM-based functionality is removed.
254 lines
7.6 KiB
C
254 lines
7.6 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2005 by the Blender Foundation.
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* All rights reserved.
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*
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* Contributor(s): Daniel Dunbar
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* Ton Roosendaal,
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* Ben Batt,
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* Brecht Van Lommel,
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* Campbell Barton
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*
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* ***** END GPL LICENSE BLOCK *****
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*
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*/
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/** \file blender/modifiers/intern/MOD_particlesystem.c
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* \ingroup modifiers
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*/
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#include <stddef.h>
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#include "DNA_material_types.h"
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#include "DNA_mesh_types.h"
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#include "BLI_utildefines.h"
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#include "BKE_cdderivedmesh.h"
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#include "BKE_mesh.h"
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#include "BKE_library.h"
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#include "BKE_modifier.h"
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#include "BKE_particle.h"
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#include "MOD_util.h"
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static void initData(ModifierData *md)
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{
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ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
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psmd->psys = NULL;
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psmd->mesh_final = NULL;
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psmd->mesh_deformed = NULL;
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psmd->totdmvert = psmd->totdmedge = psmd->totdmface = 0;
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}
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static void freeData(ModifierData *md)
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{
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ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
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if (psmd->mesh_final) {
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BKE_id_free(NULL, psmd->mesh_final);
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psmd->mesh_final = NULL;
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if (psmd->mesh_deformed) {
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BKE_id_free(NULL, psmd->mesh_deformed);
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psmd->mesh_deformed = NULL;
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}
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}
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psmd->totdmvert = psmd->totdmedge = psmd->totdmface = 0;
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/* ED_object_modifier_remove may have freed this first before calling
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* modifier_free (which calls this function) */
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if (psmd->psys)
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psmd->psys->flag |= PSYS_DELETE;
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}
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static void copyData(const ModifierData *md, ModifierData *target)
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{
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#if 0
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const ParticleSystemModifierData *psmd = (const ParticleSystemModifierData *) md;
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#endif
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ParticleSystemModifierData *tpsmd = (ParticleSystemModifierData *) target;
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modifier_copyData_generic(md, target);
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tpsmd->mesh_final = NULL;
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tpsmd->mesh_deformed = NULL;
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tpsmd->totdmvert = tpsmd->totdmedge = tpsmd->totdmface = 0;
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}
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static CustomDataMask requiredDataMask(Object *UNUSED(ob), ModifierData *md)
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{
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ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
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return psys_emitter_customdata_mask(psmd->psys);
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}
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/* saves the current emitter state for a particle system and calculates particles */
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static void deformVerts(
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ModifierData *md, const ModifierEvalContext *ctx,
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Mesh *mesh,
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float (*vertexCos)[3],
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int UNUSED(numVerts))
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{
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Mesh *mesh_src = mesh;
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ParticleSystemModifierData *psmd = (ParticleSystemModifierData *) md;
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ParticleSystem *psys = NULL;
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/* float cfra = BKE_scene_frame_get(md->scene); */ /* UNUSED */
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if (ctx->object->particlesystem.first)
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psys = psmd->psys;
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else
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return;
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if (!psys_check_enabled(ctx->object, psys, (ctx->flag & MOD_APPLY_RENDER) != 0))
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return;
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if (mesh_src == NULL) {
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mesh_src = get_mesh(ctx->object, NULL, NULL, vertexCos, false, true);
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if (mesh_src == NULL) {
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return;
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}
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}
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/* clear old dm */
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if (psmd->mesh_final) {
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BKE_id_free(NULL, psmd->mesh_final);
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psmd->mesh_final = NULL;
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if (psmd->mesh_deformed) {
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BKE_id_free(NULL, psmd->mesh_deformed);
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psmd->mesh_deformed = NULL;
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}
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}
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else if (psmd->flag & eParticleSystemFlag_file_loaded) {
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/* in file read mesh just wasn't saved in file so no need to reset everything */
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psmd->flag &= ~eParticleSystemFlag_file_loaded;
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}
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else {
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/* no dm before, so recalc particles fully */
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psys->recalc |= PSYS_RECALC_RESET;
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}
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/* make new mesh */
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BKE_id_copy_ex(NULL, &mesh_src->id, (ID **)&psmd->mesh_final,
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LIB_ID_CREATE_NO_MAIN |
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LIB_ID_CREATE_NO_USER_REFCOUNT |
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LIB_ID_CREATE_NO_DEG_TAG |
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LIB_ID_COPY_NO_PREVIEW,
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false);
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BKE_mesh_apply_vert_coords(psmd->mesh_final, vertexCos);
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BKE_mesh_calc_normals(psmd->mesh_final);
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BKE_mesh_tessface_ensure(psmd->mesh_final);
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if (!psmd->mesh_final->runtime.deformed_only) {
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/* XXX Think we can assume here that if current DM is not only-deformed, ob->deformedOnly has been set.
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* This is awfully weak though. :| */
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if (ctx->object->derivedDeform) {
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DM_to_mesh(ctx->object->derivedDeform, psmd->mesh_deformed, ctx->object, CD_MASK_EVERYTHING, false);
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}
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else { /* Can happen in some cases, e.g. when rendering from Edit mode... */
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BKE_id_copy_ex(NULL, &mesh_src->id, (ID **)&psmd->mesh_deformed,
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LIB_ID_CREATE_NO_MAIN |
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LIB_ID_CREATE_NO_USER_REFCOUNT |
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LIB_ID_CREATE_NO_DEG_TAG |
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LIB_ID_COPY_NO_PREVIEW,
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false);
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}
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BKE_mesh_tessface_ensure(psmd->mesh_deformed);
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}
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if (mesh_src != psmd->mesh_final && mesh_src != mesh) {
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BKE_id_free(NULL, mesh_src);
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}
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/* report change in mesh structure */
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if (psmd->mesh_final->totvert != psmd->totdmvert ||
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psmd->mesh_final->totedge != psmd->totdmedge ||
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psmd->mesh_final->totface != psmd->totdmface)
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{
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psys->recalc |= PSYS_RECALC_RESET;
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psmd->totdmvert = psmd->mesh_final->totvert;
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psmd->totdmedge = psmd->mesh_final->totedge;
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psmd->totdmface = psmd->mesh_final->totface;
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}
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if (!(ctx->object->transflag & OB_NO_PSYS_UPDATE)) {
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psmd->flag &= ~eParticleSystemFlag_psys_updated;
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particle_system_update(ctx->depsgraph, md->scene, ctx->object, psys, (ctx->flag & MOD_APPLY_RENDER) != 0);
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psmd->flag |= eParticleSystemFlag_psys_updated;
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}
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}
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/* disabled particles in editmode for now, until support for proper derivedmesh
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* updates is coded */
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#if 0
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static void deformVertsEM(
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ModifierData *md, Object *ob, EditMesh *editData,
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DerivedMesh *derivedData, float (*vertexCos)[3], int numVerts)
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{
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DerivedMesh *dm = derivedData;
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if (!derivedData) dm = CDDM_from_editmesh(editData, ob->data);
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deformVerts(md, ob, dm, vertexCos, numVerts);
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if (!derivedData) dm->release(dm);
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}
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#endif
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ModifierTypeInfo modifierType_ParticleSystem = {
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/* name */ "ParticleSystem",
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/* structName */ "ParticleSystemModifierData",
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/* structSize */ sizeof(ParticleSystemModifierData),
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/* type */ eModifierTypeType_OnlyDeform,
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/* flags */ eModifierTypeFlag_AcceptsMesh |
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eModifierTypeFlag_SupportsMapping |
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eModifierTypeFlag_UsesPointCache /* |
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eModifierTypeFlag_SupportsEditmode |
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eModifierTypeFlag_EnableInEditmode */,
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/* copyData */ copyData,
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/* deformVerts_DM */ NULL,
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/* deformVertsEM_DM */ NULL,
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/* deformMatrices_DM */ NULL,
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/* deformMatricesEM_DM*/NULL,
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/* applyModifier_DM */ NULL,
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/* applyModifierEM_DM */NULL,
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/* deformVerts */ deformVerts,
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/* deformMatrices */ NULL,
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/* deformVertsEM */ NULL,
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/* deformMatricesEM */ NULL,
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/* applyModifier */ NULL,
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/* applyModifierEM */ NULL,
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/* initData */ initData,
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/* requiredDataMask */ requiredDataMask,
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/* freeData */ freeData,
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/* isDisabled */ NULL,
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/* updateDepsgraph */ NULL,
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/* dependsOnTime */ NULL,
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/* dependsOnNormals */ NULL,
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/* foreachObjectLink */ NULL,
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/* foreachIDLink */ NULL,
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/* foreachTexLink */ NULL,
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};
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