95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "scene/particles.h"
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#include "scene/mesh.h"
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#include "scene/object.h"
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#include "blender/sync.h"
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#include "blender/util.h"
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#include "DNA_particle_types.h"
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#include "BKE_scene.hh"
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#include "DEG_depsgraph_query.hh"
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CCL_NAMESPACE_BEGIN
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/* Utilities */
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bool BlenderSync::sync_dupli_particle(blender::Object &b_parent,
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blender::DEGObjectIterData &b_deg_iter_data,
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blender::Object &b_ob,
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Object *object)
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{
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/* Test if this dupli was generated from a particle system. */
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blender::ParticleSystem *b_psys = b_deg_iter_data.dupli_object_current->particle_system;
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if (!b_psys) {
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return false;
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}
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object->set_hide_on_missing_motion(true);
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/* test if we need particle data */
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if (!object->get_geometry()->need_attribute(scene, ATTR_STD_PARTICLE)) {
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return false;
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}
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/* don't handle child particles yet */
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const int *persistent_id = b_deg_iter_data.dupli_object_current->persistent_id;
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if (persistent_id[0] >= b_psys->totpart) {
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return false;
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}
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/* find particle system */
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const ParticleSystemKey key(&b_parent, persistent_id);
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ParticleSystem *psys;
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const bool first_use = !particle_system_map.is_used(key);
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const bool need_update = particle_system_map.add_or_update(&psys, &b_parent.id, &b_ob.id, key);
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/* no update needed? */
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if (!need_update && !object->get_geometry()->is_modified() &&
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!scene->object_manager->need_update())
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{
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return true;
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}
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/* first time used in this sync loop? clear and tag update */
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if (first_use) {
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psys->particles.clear();
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psys->tag_update(scene);
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}
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/* add particle */
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blender::ParticleData &b_pa = b_psys->particles[persistent_id[0]];
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Particle pa;
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pa.index = persistent_id[0];
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pa.age = BKE_scene_frame_to_ctime(b_scene, b_scene->r.cfra) - b_pa.time;
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pa.lifetime = b_pa.lifetime;
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pa.location = make_float3(b_pa.state.co[0], b_pa.state.co[1], b_pa.state.co[2]);
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pa.rotation = make_float4(
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b_pa.state.rot[0], b_pa.state.rot[1], b_pa.state.rot[2], b_pa.state.rot[3]);
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pa.size = b_pa.size;
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pa.velocity = make_float3(b_pa.state.vel[0], b_pa.state.vel[1], b_pa.state.vel[2]);
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pa.angular_velocity = make_float3(b_pa.state.ave[0], b_pa.state.ave[1], b_pa.state.ave[2]);
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psys->particles.push_back_slow(pa);
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object->set_particle_system(psys);
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object->set_particle_index(psys->particles.size() - 1);
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if (object->particle_index_is_modified()) {
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scene->object_manager->tag_update(scene, ObjectManager::PARTICLE_MODIFIED);
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}
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/* return that this object has particle data */
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return true;
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}
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CCL_NAMESPACE_END
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