Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/cycles/blender/particles.cpp

@@ -0,0 +1,94 @@
+/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#include "scene/particles.h"
+#include "scene/mesh.h"
+#include "scene/object.h"
+
+#include "blender/sync.h"
+#include "blender/util.h"
+
+#include "DNA_particle_types.h"
+
+#include "BKE_scene.hh"
+
+#include "DEG_depsgraph_query.hh"
+
+CCL_NAMESPACE_BEGIN
+
+/* Utilities */
+
+bool BlenderSync::sync_dupli_particle(blender::Object &b_parent,
+                                      blender::DEGObjectIterData &b_deg_iter_data,
+                                      blender::Object &b_ob,
+                                      Object *object)
+{
+  /* Test if this dupli was generated from a particle system. */
+  blender::ParticleSystem *b_psys = b_deg_iter_data.dupli_object_current->particle_system;
+  if (!b_psys) {
+    return false;
+  }
+
+  object->set_hide_on_missing_motion(true);
+
+  /* test if we need particle data */
+  if (!object->get_geometry()->need_attribute(scene, ATTR_STD_PARTICLE)) {
+    return false;
+  }
+
+  /* don't handle child particles yet */
+  const int *persistent_id = b_deg_iter_data.dupli_object_current->persistent_id;
+
+  if (persistent_id[0] >= b_psys->totpart) {
+    return false;
+  }
+
+  /* find particle system */
+  const ParticleSystemKey key(&b_parent, persistent_id);
+  ParticleSystem *psys;
+
+  const bool first_use = !particle_system_map.is_used(key);
+  const bool need_update = particle_system_map.add_or_update(&psys, &b_parent.id, &b_ob.id, key);
+
+  /* no update needed? */
+  if (!need_update && !object->get_geometry()->is_modified() &&
+      !scene->object_manager->need_update())
+  {
+    return true;
+  }
+
+  /* first time used in this sync loop? clear and tag update */
+  if (first_use) {
+    psys->particles.clear();
+    psys->tag_update(scene);
+  }
+
+  /* add particle */
+  blender::ParticleData &b_pa = b_psys->particles[persistent_id[0]];
+  Particle pa;
+
+  pa.index = persistent_id[0];
+  pa.age = BKE_scene_frame_to_ctime(b_scene, b_scene->r.cfra) - b_pa.time;
+  pa.lifetime = b_pa.lifetime;
+  pa.location = make_float3(b_pa.state.co[0], b_pa.state.co[1], b_pa.state.co[2]);
+  pa.rotation = make_float4(
+      b_pa.state.rot[0], b_pa.state.rot[1], b_pa.state.rot[2], b_pa.state.rot[3]);
+  pa.size = b_pa.size;
+  pa.velocity = make_float3(b_pa.state.vel[0], b_pa.state.vel[1], b_pa.state.vel[2]);
+  pa.angular_velocity = make_float3(b_pa.state.ave[0], b_pa.state.ave[1], b_pa.state.ave[2]);
+
+  psys->particles.push_back_slow(pa);
+
+  object->set_particle_system(psys);
+  object->set_particle_index(psys->particles.size() - 1);
+
+  if (object->particle_index_is_modified()) {
+    scene->object_manager->tag_update(scene, ObjectManager::PARTICLE_MODIFIED);
+  }
+
+  /* return that this object has particle data */
+  return true;
+}
+
+CCL_NAMESPACE_END