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-rw-r--r--source/blender/simulation/intern/simulation_update.cc357
1 files changed, 0 insertions, 357 deletions
diff --git a/source/blender/simulation/intern/simulation_update.cc b/source/blender/simulation/intern/simulation_update.cc
deleted file mode 100644
index 452b222bb08..00000000000
--- a/source/blender/simulation/intern/simulation_update.cc
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@@ -1,357 +0,0 @@
-/*
- * 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.
- */
-
-#include "SIM_simulation_update.hh"
-
-#include "BKE_customdata.h"
-#include "BKE_lib_id.h"
-#include "BKE_object.h"
-#include "BKE_simulation.h"
-
-#include "DNA_modifier_types.h"
-#include "DNA_scene_types.h"
-#include "DNA_simulation_types.h"
-
-#include "DEG_depsgraph_query.h"
-
-#include "BLI_array.hh"
-#include "BLI_float3.hh"
-#include "BLI_listbase.h"
-#include "BLI_map.hh"
-#include "BLI_rand.h"
-#include "BLI_set.hh"
-#include "BLI_vector.hh"
-
-#include "NOD_node_tree_dependencies.hh"
-
-#include "particle_function.hh"
-#include "simulation_collect_influences.hh"
-#include "simulation_solver.hh"
-
-namespace blender::sim {
-
-static void copy_states_to_cow(const Simulation *simulation_orig, Simulation *simulation_cow)
-{
- BKE_simulation_state_remove_all(simulation_cow);
- simulation_cow->current_frame = simulation_orig->current_frame;
-
- LISTBASE_FOREACH (const SimulationState *, state_orig, &simulation_orig->states) {
- SimulationState *state_cow = BKE_simulation_state_add(
- simulation_cow, state_orig->type, state_orig->name);
- BKE_simulation_state_copy_data(state_orig, state_cow);
- }
-}
-
-static void remove_unused_states(Simulation *simulation, const RequiredStates &required_states)
-{
- LISTBASE_FOREACH_MUTABLE (SimulationState *, state, &simulation->states) {
- if (!required_states.is_required(state->name, state->type)) {
- BKE_simulation_state_remove(simulation, state);
- }
- }
-}
-
-static void add_missing_states(Simulation *simulation, const RequiredStates &required_states)
-{
- for (auto &&item : required_states.states().items()) {
- const char *name = item.key.c_str();
- const char *type = item.value;
-
- SimulationState *state = BKE_simulation_state_try_find_by_name_and_type(
- simulation, name, type);
-
- if (state == nullptr) {
- BKE_simulation_state_add(simulation, type, name);
- }
- }
-}
-
-static void reinitialize_empty_simulation_states(Simulation *simulation,
- const RequiredStates &required_states)
-{
- remove_unused_states(simulation, required_states);
- BKE_simulation_state_reset_all(simulation);
- add_missing_states(simulation, required_states);
-}
-
-static void update_simulation_state_list(Simulation *simulation,
- const RequiredStates &required_states)
-{
- remove_unused_states(simulation, required_states);
- add_missing_states(simulation, required_states);
-}
-
-class SampledDependencyAnimations : public DependencyAnimations {
- private:
- TimeInterval simulation_time_interval_;
- MultiValueMap<Object *, float4x4> object_transforms_cache_;
-
- public:
- SampledDependencyAnimations(TimeInterval simulation_time_interval)
- : simulation_time_interval_(simulation_time_interval)
- {
- }
-
- void add_object_transforms(Object &object, Span<float4x4> transforms)
- {
- object_transforms_cache_.add_multiple(&object, transforms);
- }
-
- bool is_object_transform_changing(Object &object) const
- {
- return object_transforms_cache_.lookup(&object).size() >= 2;
- }
-
- void get_object_transforms(Object &object,
- Span<float> simulation_times,
- MutableSpan<float4x4> r_transforms) const
- {
- assert_same_size(simulation_times, r_transforms);
- Span<float4x4> cached_transforms = object_transforms_cache_.lookup(&object);
- if (cached_transforms.size() == 0) {
- r_transforms.fill(object.obmat);
- return;
- }
- if (cached_transforms.size() == 1) {
- r_transforms.fill(cached_transforms[0]);
- return;
- }
-
- for (int i : simulation_times.index_range()) {
- const float simulation_time = simulation_times[i];
- if (simulation_time <= simulation_time_interval_.start()) {
- r_transforms[i] = cached_transforms.first();
- continue;
- }
- if (simulation_time >= simulation_time_interval_.stop()) {
- r_transforms[i] = cached_transforms.last();
- continue;
- }
- const float factor = simulation_time_interval_.factor_at_time(simulation_time);
- BLI_assert(factor > 0.0f && factor < 1.0f);
- const float scaled_factor = factor * (cached_transforms.size() - 1);
- const int lower_sample = static_cast<int>(scaled_factor);
- const int upper_sample = lower_sample + 1;
- const float mix_factor = scaled_factor - lower_sample;
- r_transforms[i] = float4x4::interpolate(
- cached_transforms[lower_sample], cached_transforms[upper_sample], mix_factor);
- }
- }
-};
-
-static void sample_object_transforms(Object &object,
- Depsgraph &depsgraph,
- Scene &scene,
- TimeInterval scene_frame_interval,
- MutableSpan<float4x4> r_transforms)
-{
- if (r_transforms.size() == 0) {
- return;
- }
- if (r_transforms.size() == 1) {
- r_transforms[0] = object.obmat;
- return;
- }
-
- Array<float> frames(r_transforms.size());
- scene_frame_interval.compute_uniform_samples(frames);
-
- for (int i : frames.index_range()) {
- float frame = frames[i];
- const int recursion_depth = 5;
- BKE_object_modifier_update_subframe(
- &depsgraph, &scene, &object, false, recursion_depth, frame, eModifierType_None);
- r_transforms[i] = object.obmat;
- }
-}
-
-template<typename T> static bool all_values_equal(Span<T> values)
-{
- if (values.size() == 0) {
- return true;
- }
- for (const T &value : values.drop_front(1)) {
- if (value != values[0]) {
- return false;
- }
- }
- return true;
-}
-
-static void prepare_dependency_animations(Depsgraph &depsgraph,
- Scene &scene,
- Simulation &simulation,
- TimeInterval scene_frame_interval,
- SampledDependencyAnimations &r_dependency_animations)
-{
- LISTBASE_FOREACH (SimulationDependency *, dependency, &simulation.dependencies) {
- ID *id_cow = DEG_get_evaluated_id(&depsgraph, dependency->id);
- if (id_cow == nullptr) {
- continue;
- }
- if (GS(id_cow->name) != ID_OB) {
- continue;
- }
- Object &object_cow = *reinterpret_cast<Object *>(id_cow);
- constexpr int sample_count = 10;
- Array<float4x4, sample_count> transforms(sample_count);
- sample_object_transforms(object_cow, depsgraph, scene, scene_frame_interval, transforms);
-
- /* If all samples are the same, only store one. */
- Span<float4x4> transforms_to_use = (all_values_equal(transforms.as_span())) ?
- transforms.as_span().take_front(1) :
- transforms.as_span();
-
- r_dependency_animations.add_object_transforms(object_cow, transforms_to_use);
- }
-}
-
-void update_simulation_in_depsgraph(Depsgraph *depsgraph,
- Scene *scene_cow,
- Simulation *simulation_cow)
-{
- int current_frame = scene_cow->r.cfra;
- if (simulation_cow->current_frame == current_frame) {
- return;
- }
-
- /* Below we modify the original state/cache. Only the active depsgraph is allowed to do that. */
- if (!DEG_is_active(depsgraph)) {
- return;
- }
-
- Simulation *simulation_orig = reinterpret_cast<Simulation *>(
- DEG_get_original_id(&simulation_cow->id));
-
- ResourceCollector resources;
- SimulationInfluences influences;
- RequiredStates required_states;
-
- collect_simulation_influences(*simulation_cow, resources, influences, required_states);
-
- bke::PersistentDataHandleMap handle_map;
- LISTBASE_FOREACH (SimulationDependency *, dependency, &simulation_orig->dependencies) {
- ID *id_cow = DEG_get_evaluated_id(depsgraph, dependency->id);
- if (id_cow != nullptr) {
- handle_map.add(dependency->handle, *id_cow);
- }
- }
-
- if (current_frame == 1) {
- reinitialize_empty_simulation_states(simulation_orig, required_states);
-
- initialize_simulation_states(*simulation_orig, *depsgraph, influences, handle_map);
- simulation_orig->current_frame = 1;
-
- copy_states_to_cow(simulation_orig, simulation_cow);
- }
- else if (current_frame == simulation_orig->current_frame + 1) {
- update_simulation_state_list(simulation_orig, required_states);
-
- const float fps = scene_cow->r.frs_sec / scene_cow->r.frs_sec_base;
- const float time_step = 1.0f / fps;
- TimeInterval scene_frame_interval(current_frame - 1, 1);
- TimeInterval simulation_time_interval(simulation_orig->current_simulation_time, time_step);
- SampledDependencyAnimations dependency_animations{simulation_time_interval};
- prepare_dependency_animations(
- *depsgraph, *scene_cow, *simulation_orig, scene_frame_interval, dependency_animations);
-
- solve_simulation_time_step(
- *simulation_orig, *depsgraph, influences, handle_map, dependency_animations, time_step);
- simulation_orig->current_frame = current_frame;
-
- copy_states_to_cow(simulation_orig, simulation_cow);
- }
-}
-
-/* Returns true when dependencies have changed. */
-bool update_simulation_dependencies(Simulation *simulation)
-{
- nodes::NodeTreeDependencies dependencies = nodes::find_node_tree_dependencies(
- *simulation->nodetree);
-
- ListBase *dependency_list = &simulation->dependencies;
-
- bool dependencies_changed = false;
-
- Map<ID *, SimulationDependency *> dependency_by_id;
- Map<SimulationDependency *, int> old_flag_by_dependency;
- Set<int> used_handles;
-
- /* Remove unused handle items and clear flags that are reinitialized later. */
- LISTBASE_FOREACH_MUTABLE (SimulationDependency *, dependency, dependency_list) {
- if (dependencies.depends_on(dependency->id)) {
- dependency_by_id.add_new(dependency->id, dependency);
- used_handles.add_new(dependency->handle);
- old_flag_by_dependency.add_new(dependency, dependency->flag);
- dependency->flag &= ~(SIM_DEPENDS_ON_TRANSFORM | SIM_DEPENDS_ON_GEOMETRY);
- }
- else {
- if (dependency->id != nullptr) {
- id_us_min(dependency->id);
- }
- BLI_remlink(dependency_list, dependency);
- MEM_freeN(dependency);
- dependencies_changed = true;
- }
- }
-
- /* Add handle items for new id dependencies. */
- int next_handle = 0;
- for (ID *id : dependencies.id_dependencies()) {
- dependency_by_id.lookup_or_add_cb(id, [&]() {
- while (used_handles.contains(next_handle)) {
- next_handle++;
- }
- used_handles.add_new(next_handle);
-
- SimulationDependency *dependency = static_cast<SimulationDependency *>(
- MEM_callocN(sizeof(*dependency), AT));
- id_us_plus(id);
- dependency->id = id;
- dependency->handle = next_handle;
- BLI_addtail(dependency_list, dependency);
-
- return dependency;
- });
- }
-
- /* Set appropriate dependency flags. */
- for (Object *object : dependencies.transform_dependencies()) {
- SimulationDependency *dependency = dependency_by_id.lookup(&object->id);
- dependency->flag |= SIM_DEPENDS_ON_TRANSFORM;
- }
- for (Object *object : dependencies.geometry_dependencies()) {
- SimulationDependency *dependency = dependency_by_id.lookup(&object->id);
- dependency->flag |= SIM_DEPENDS_ON_GEOMETRY;
- }
-
- if (!dependencies_changed) {
- /* Check if any flags have changed. */
- LISTBASE_FOREACH (SimulationDependency *, dependency, dependency_list) {
- uint32_t old_flag = old_flag_by_dependency.lookup_default(dependency, 0);
- uint32_t new_flag = dependency->flag;
- if (old_flag != new_flag) {
- dependencies_changed = true;
- break;
- }
- }
- }
-
- return dependencies_changed;
-}
-
-} // namespace blender::sim
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