Blender V4.5
Classes | Macros | Typedefs | Functions | Variables
particle_system.cc File Reference
Blender » BlenKernel
#include <algorithm>
#include <cmath>
#include <cstddef>
#include <cstdlib>
#include <cstring>
#include "MEM_guardedalloc.h"
#include "DNA_boid_types.h"
#include "DNA_cloth_types.h"
#include "DNA_listBase.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_modifier_types.h"
#include "DNA_object_force_types.h"
#include "DNA_object_types.h"
#include "DNA_particle_types.h"
#include "DNA_scene_types.h"
#include "DNA_texture_types.h"
#include "BLI_kdopbvh.hh"
#include "BLI_kdtree.h"
#include "BLI_linklist.h"
#include "BLI_listbase.h"
#include "BLI_math_base_safe.h"
#include "BLI_math_matrix.h"
#include "BLI_math_rotation.h"
#include "BLI_math_vector.h"
#include "BLI_rand.h"
#include "BLI_string.h"
#include "BLI_string_utils.hh"
#include "BLI_task.h"
#include "BLI_threads.h"
#include "BLI_utildefines.h"
#include "BKE_animsys.h"
#include "BKE_boids.h"
#include "BKE_collision.h"
#include "BKE_colortools.hh"
#include "BKE_customdata.hh"
#include "BKE_effect.h"
#include "BKE_lib_id.hh"
#include "BKE_lib_query.hh"
#include "BKE_mesh_legacy_convert.hh"
#include "BKE_particle.h"
#include "BKE_cloth.hh"
#include "BKE_material.hh"
#include "BKE_mesh.hh"
#include "BKE_modifier.hh"
#include "BKE_object.hh"
#include "BKE_pointcache.h"
#include "BKE_scene.hh"
#include "DEG_depsgraph.hh"
#include "DEG_depsgraph_query.hh"

Go to the source code of this file.

Classes

struct  SPHNeighbor
struct  SPHRangeData
struct  EfData
struct  DynamicStepSolverTaskData
struct  ParticleSystemIDLoopForModifier

Macros

#define ZERO_F43
#define COLLISION_MIN_RADIUS   0.001f
#define COLLISION_MIN_DISTANCE   0.0001f
#define COLLISION_ZERO   0.00001f
#define COLLISION_INIT_STEP   0.00008f

Typedefs

using NRDistanceFunc

Functions

static int particles_are_dynamic (ParticleSystem *psys)
float psys_get_current_display_percentage (ParticleSystem *psys, const bool use_render_params)
static int tot_particles (ParticleSystem *psys, PTCacheID *pid)
void psys_reset (ParticleSystem *psys, int mode)
void psys_unique_name (Object *object, ParticleSystem *psys, const char *defname)
static void realloc_particles (ParticleSimulationData *sim, int new_totpart)
int psys_get_child_number (Scene *scene, ParticleSystem *psys, const bool use_render_params)
int psys_get_tot_child (Scene *scene, ParticleSystem *psys, const bool use_render_params)
void psys_calc_dmcache (Object *ob, Mesh *mesh_final, Mesh *mesh_original, ParticleSystem *psys)
void psys_thread_context_init (ParticleThreadContext *ctx, ParticleSimulationData *sim)
blender::Vector< ParticleTask > psys_tasks_create (ParticleThreadContext *ctx, int startpart, int endpart)
void psys_tasks_free (blender::Vector< ParticleTask > &tasks)
void psys_thread_context_free (ParticleThreadContext *ctx)
static void init_particle_texture (ParticleSimulationData *sim, ParticleData *pa, int p)
void init_particle (ParticleSimulationData *sim, ParticleData *pa)
static void initialize_all_particles (ParticleSimulationData *sim)
static void free_unexisting_particles (ParticleSimulationData *sim)
static void get_angular_velocity_vector (short avemode, ParticleKey *state, float vec[3])
void psys_get_birth_coords (ParticleSimulationData *sim, ParticleData *pa, ParticleKey *state, float dtime, float cfra)
static void evaluate_emitter_anim (Depsgraph *depsgraph, Scene *scene, Object *ob, float cfra)
void reset_particle (ParticleSimulationData *sim, ParticleData *pa, float dtime, float cfra)
static void reset_all_particles (ParticleSimulationData *sim, float dtime, float cfra, int from)
ParticleSystem * psys_get_target_system (Object *ob, ParticleTarget *pt)
void psys_count_keyed_targets (ParticleSimulationData *sim)
static void set_keyed_keys (ParticleSimulationData *sim)
void psys_make_temp_pointcache (Object *ob, ParticleSystem *psys)
static void psys_clear_temp_pointcache (ParticleSystem *psys)
void psys_get_pointcache_start_end (Scene *scene, ParticleSystem *psys, int *sfra, int *efra)
static void bvhtree_balance_isolated (void *userdata)
static void psys_update_particle_bvhtree (ParticleSystem *psys, float cfra)
void psys_update_particle_tree (ParticleSystem *psys, float cfra)
static void psys_update_effectors (ParticleSimulationData *sim)
static void integrate_particle (ParticleSettings *part, ParticleData *pa, float dtime, float *external_acceleration, void(*force_func)(void *forcedata, ParticleKey *state, float *force, float *impulse), void *forcedata)
static void basic_force_cb (void *efdata_v, ParticleKey *state, float *force, float *impulse)
static void basic_integrate (ParticleSimulationData *sim, int p, float dfra, float cfra)
static void basic_rotate (ParticleSettings *part, ParticleData *pa, float dfra, float timestep)
static float nr_signed_distance_to_plane (float *p, float radius, ParticleCollisionElement *pce, float *nor)
static float nr_distance_to_edge (float *p, float radius, ParticleCollisionElement *pce, float *)
static float nr_distance_to_vert (float *p, float radius, ParticleCollisionElement *pce, float *)
static void collision_interpolate_element (ParticleCollisionElement *pce, float t, float fac, ParticleCollision *col)
static void collision_point_velocity (ParticleCollisionElement *pce)
static float collision_point_distance_with_normal (float p[3], ParticleCollisionElement *pce, float fac, ParticleCollision *col, float *nor)
static void collision_point_on_surface (const float p[3], ParticleCollisionElement *pce, float fac, ParticleCollision *col, float *co)
static float collision_newton_rhapson (ParticleCollision *col, float radius, ParticleCollisionElement *pce, NRDistanceFunc distance_func)
static int collision_sphere_to_tri (ParticleCollision *col, float radius, ParticleCollisionElement *pce, float *t)
static int collision_sphere_to_edges (ParticleCollision *col, float radius, ParticleCollisionElement *pce, float *t)
static int collision_sphere_to_verts (ParticleCollision *col, float radius, ParticleCollisionElement *pce, float *t)
void BKE_psys_collision_neartest_cb (void *userdata, int index, const BVHTreeRay *ray, BVHTreeRayHit *hit)
static int collision_detect (ParticleData *pa, ParticleCollision *col, BVHTreeRayHit *hit, ListBase *colliders)
static int collision_response (ParticleSimulationData *sim, ParticleData *pa, ParticleCollision *col, BVHTreeRayHit *hit, int kill, int dynamic_rotation)
static void collision_fail (ParticleData *pa, ParticleCollision *col)
static void collision_check (ParticleSimulationData *sim, int p, float dfra, float cfra)
static void psys_update_path_cache (ParticleSimulationData *sim, float cfra, const bool use_render_params)
static bool psys_hair_use_simulation (ParticleData *pa, float max_length)
static MDeformVert * hair_set_pinning (MDeformVert *dvert, float weight)
static void hair_create_input_mesh (ParticleSimulationData *sim, int totpoint, int totedge, Mesh **r_mesh)
static void do_hair_dynamics (ParticleSimulationData *sim)
static void hair_step (ParticleSimulationData *sim, float cfra, const bool use_render_params)
static void save_hair (ParticleSimulationData *sim, float)
static void update_courant_num (ParticleSimulationData *sim, ParticleData *pa, float dtime, SPHData *sphdata, SpinLock *spin)
static float get_base_time_step (ParticleSettings *part)
static void update_timestep (ParticleSystem *psys, ParticleSimulationData *sim)
static float sync_timestep (ParticleSystem *psys, float t_frac)
static void dynamics_step_sphdata_reduce (const void *__restrict, void *__restrict join_v, void *__restrict chunk_v)
static void dynamics_step_sph_ddr_task_cb_ex (void *__restrict userdata, const int p, const TaskParallelTLS *__restrict tls)
static void dynamics_step_sph_classical_basic_integrate_task_cb_ex (void *__restrict userdata, const int p, const TaskParallelTLS *__restrict)
static void dynamics_step_sph_classical_calc_density_task_cb_ex (void *__restrict userdata, const int p, const TaskParallelTLS *__restrict tls)
static void dynamics_step_sph_classical_integrate_task_cb_ex (void *__restrict userdata, const int p, const TaskParallelTLS *__restrict tls)
static void dynamics_step (ParticleSimulationData *sim, float cfra)
static void update_children (ParticleSimulationData *sim, const bool use_render_params)
static void cached_step (ParticleSimulationData *sim, float cfra, const bool use_render_params)
static bool particles_has_flip (short parttype)
static bool particles_has_tracer (short parttype)
static bool particles_has_spray (short parttype)
static bool particles_has_bubble (short parttype)
static bool particles_has_foam (short parttype)
static void particles_fluid_step (ParticleSimulationData *sim, int cfra, const bool use_render_params)
static int emit_particles (ParticleSimulationData *sim, PTCacheID *pid, float)
static void system_step (ParticleSimulationData *sim, float cfra, const bool use_render_params)
void psys_changed_type (Object *ob, ParticleSystem *psys)
void psys_check_boid_data (ParticleSystem *psys)
void BKE_particlesettings_fluid_default_settings (ParticleSettings *part)
static void psys_prepare_physics (ParticleSimulationData *sim)
static int hair_needs_recalc (ParticleSystem *psys)
static ParticleSettings * particle_settings_localize (ParticleSettings *particle_settings)
static void particle_settings_free_local (ParticleSettings *particle_settings)
void particle_system_update (Depsgraph *depsgraph, Scene *scene, Object *ob, ParticleSystem *psys, const bool use_render_params)
static void particlesystem_modifiersForeachIDLink (void *user_data, Object *, ID **id_pointer, const LibraryForeachIDCallbackFlag cb_flag)
void BKE_particlesystem_id_loop (ParticleSystem *psys, ParticleSystemIDFunc func, void *userdata)
void BKE_particlesystem_reset_all (Object *object)
void BKE_particle_settings_eval_reset (Depsgraph *depsgraph, ParticleSettings *particle_settings)
void BKE_particle_system_eval_init (Depsgraph *depsgraph, Object *object)

Variables

static ThreadRWMutex psys_bvhtree_rwlock = BLI_RWLOCK_INITIALIZER
static const float MIN_TIMESTEP = 1.0f / 101.0f
static const float TIMESTEP_EXPANSION_FACTOR = 0.1f
static const float TIMESTEP_EXPANSION_TOLERANCE = 1.5f

SPH fluid physics

In theory, there could be unlimited implementation of SPH simulators

This code uses in some parts adapted algorithms from the pseudo code as outlined in the Research paper:

Titled: Particle-based Viscoelastic Fluid Simulation. Authors: Simon Clavet, Philippe Beaudoin and Pierre Poulin Website: http://www.iro.umontreal.ca/labs/infographie/papers/Clavet-2005-PVFS/

Presented at SIGGRAPH, (2005)

#define PSYS_FLUID_SPRINGS_INITIAL_SIZE   256
#define SPH_NEIGHBORS   512
static ParticleSpring * sph_spring_add (ParticleSystem *psys, ParticleSpring *spring)
static void sph_spring_delete (ParticleSystem *psys, int j)
static void sph_springs_modify (ParticleSystem *psys, float dtime)
static blender::Map< blender::OrderedEdge, int > sph_springhash_build (ParticleSystem *psys)
static void sph_evaluate_func (BVHTree *tree, ParticleSystem **psys, const float co[3], SPHRangeData *pfr, float interaction_radius, BVHTree_RangeQuery callback)
static void sph_density_accum_cb (void *userdata, int index, const float co[3], float squared_dist)
static void sph_particle_courant (SPHData *sphdata, SPHRangeData *pfr)
static void sph_force_cb (void *sphdata_v, ParticleKey *state, float *force, float *)
static void sphclassical_density_accum_cb (void *userdata, int index, const float co[3], float)
static void sphclassical_neighbor_accum_cb (void *userdata, int index, const float co[3], float)
static void sphclassical_force_cb (void *sphdata_v, ParticleKey *state, float *force, float *)
static void sphclassical_calc_dens (ParticleData *pa, float, SPHData *sphdata)
void psys_sph_init (ParticleSimulationData *sim, SPHData *sphdata)
static void psys_sph_flush_springs (SPHData *sphdata)
void psys_sph_finalize (SPHData *sphdata)
void psys_sph_density (BVHTree *tree, SPHData *sphdata, float co[3], float vars[2])
static void sph_integrate (ParticleSimulationData *sim, ParticleData *pa, float dfra, SPHData *sphdata)

Macro Definition Documentation

◆ COLLISION_INIT_STEP

#define COLLISION_INIT_STEP   0.00008f

Definition at line 2384 of file particle_system.cc.

Referenced by collision_newton_rhapson().

◆ COLLISION_MIN_DISTANCE

#define COLLISION_MIN_DISTANCE   0.0001f

Definition at line 2382 of file particle_system.cc.

Referenced by collision_response().

◆ COLLISION_MIN_RADIUS

#define COLLISION_MIN_RADIUS   0.001f

Definition at line 2381 of file particle_system.cc.

Referenced by collision_check().

◆ COLLISION_ZERO

#define COLLISION_ZERO   0.00001f

Definition at line 2383 of file particle_system.cc.

Referenced by collision_newton_rhapson().

◆ PSYS_FLUID_SPRINGS_INITIAL_SIZE

#define PSYS_FLUID_SPRINGS_INITIAL_SIZE   256

Definition at line 1558 of file particle_system.cc.

Referenced by sph_spring_add(), and sph_spring_delete().

◆ SPH_NEIGHBORS

#define SPH_NEIGHBORS   512

Definition at line 1661 of file particle_system.cc.

Referenced by sph_density_accum_cb(), and sphclassical_neighbor_accum_cb().

◆ ZERO_F43

#define ZERO_F43
Value:
{ \
{0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.0f}, \
{ \
0.0f, 0.0f, 0.0f \
} \
}

Referenced by integrate_particle().

Typedef Documentation

◆ NRDistanceFunc

using NRDistanceFunc
Initial value:
float (*)(float *p,
float radius,
ParticleCollisionElement *pce,
float *nor)

Definition at line 2385 of file particle_system.cc.

Function Documentation

◆ basic_force_cb()

void basic_force_cb ( void * efdata_v,
ParticleKey * state,
float * force,
float * impulse )
static

Definition at line 2223 of file particle_system.cc.

References EffectedPoint::ave, ParticleKey::ave, basic_force_cb(), BKE_effectors_apply(), BLI_rng_get_float(), ParticleSettings::brownfac, ParticleSimulationData::colliders, copy_v3_v3(), ParticleSettings::dragfac, EFF_WEIGHT_DO_HAIR, ParticleSettings::effector_weights, ParticleSystem::effectors, ParticleTexture::field, EffectorWeights::flag, ParticleSettings::flag, len_v3(), madd_v3_v3fl(), mul_v3_fl(), EfData::pa, ParticleSystem::part, PART_HAIR, PART_ROT_DYN, pd_point_from_particle(), ParticleSimulationData::psys, EfData::ptex, ParticleSimulationData::rng, EfData::sim, ParticleData::size, ParticleData::state, state, and ParticleSettings::type.

Referenced by basic_force_cb(), and basic_integrate().

◆ basic_integrate()

void basic_integrate ( ParticleSimulationData * sim,
int p,
float dfra,
float cfra )
static

Definition at line 2264 of file particle_system.cc.

References ParticleKey::ave, basic_force_cb(), basic_integrate(), CLAMP, ParticleKey::co, copy_v3_v3(), ParticleTexture::damp, ParticleSettings::dampfac, ParticleSimulationData::depsgraph, do_guides(), EFF_WEIGHT_DO_HAIR, ParticleSettings::effector_weights, ParticleSystem::effectors, EffectorWeights::flag, EffectorWeights::global_gravity, ParticleTexture::gravity, PhysicsSettings::gravity, integrate_particle(), ParticleData::lifetime, madd_v3_v3fl(), mul_v3_fl(), EfData::pa, PAMAP_PHYSICS, ParticleSystem::part, PART_HAIR, ParticleSystem::particles, Scene::physics_settings, ParticleData::prev_state, ParticleSimulationData::psys, psys_get_texture(), psys_get_timestep(), psys_uses_gravity(), EfData::ptex, ParticleSimulationData::scene, EfData::sim, ParticleData::state, sub_v3_v3v3(), ParticleData::time, ParticleKey::time, ParticleSettings::type, ParticleKey::vel, and zero_v3().

Referenced by basic_integrate(), dynamics_step(), dynamics_step_sph_classical_basic_integrate_task_cb_ex(), and dynamics_step_sph_ddr_task_cb_ex().

◆ basic_rotate()

void basic_rotate ( ParticleSettings * part,
ParticleData * pa,
float dfra,
float timestep )
static

Definition at line 2320 of file particle_system.cc.

References angle(), ParticleKey::ave, ParticleSettings::avefac, ParticleSettings::avemode, axis_angle_to_quat(), basic_rotate(), cross_v3_v3v3(), dot_v3v3(), ELEM, ParticleSettings::flag, get_angular_velocity_vector(), len_v3(), mul_qt_qtqt(), mul_v3_fl(), normalize_qt(), normalize_v3(), PART_AVE_HORIZONTAL, PART_AVE_VELOCITY, PART_AVE_VERTICAL, PART_ROT_DYN, PART_ROTATIONS, ParticleData::prev_state, ParticleKey::rot, safe_acosf(), ParticleData::state, unit_qt(), ParticleKey::vel, and zero_v3().

Referenced by basic_rotate(), dynamics_step(), dynamics_step_sph_classical_integrate_task_cb_ex(), and dynamics_step_sph_ddr_task_cb_ex().

◆ BKE_particle_settings_eval_reset()

void BKE_particle_settings_eval_reset ( Depsgraph * depsgraph,
ParticleSettings * particle_settings )

Definition at line 5067 of file particle_system.cc.

References BKE_particle_settings_eval_reset(), DEG_debug_print_eval(), ParticleSettings::id, ID_RECALC_PSYS_RESET, ID::name, and ID::recalc.

Referenced by BKE_particle_settings_eval_reset().

◆ BKE_particle_system_eval_init()

void BKE_particle_system_eval_init ( Depsgraph * depsgraph,
Object * object )

Definition at line 5073 of file particle_system.cc.

References BKE_particle_system_eval_init(), DEG_debug_print_eval(), ListBase::first, Object::id, ID_RECALC_PSYS_ALL, ID::name, ParticleSystem::next, and Object::particlesystem.

Referenced by BKE_particle_system_eval_init(), and blender::deg::DepsgraphNodeBuilder::build_particle_systems().

◆ BKE_particlesettings_fluid_default_settings()

void BKE_particlesettings_fluid_default_settings ( ParticleSettings * part)

Definition at line 4701 of file particle_system.cc.

References BKE_particlesettings_fluid_default_settings(), SPHFluidSettings::buoyancy, SPHFluidSettings::flag, ParticleSettings::fluid, SPHFluidSettings::plasticity_constant, SPHFluidSettings::radius, SPHFluidSettings::rest_density, SPHFluidSettings::rest_length, SPH_FAC_DENSITY, SPH_FAC_RADIUS, SPH_FAC_REPULSION, SPH_FAC_REST_LENGTH, SPH_FAC_VISCOSITY, SPHFluidSettings::spring_k, SPHFluidSettings::stiffness_k, SPHFluidSettings::stiffness_knear, SPHFluidSettings::viscosity_beta, SPHFluidSettings::viscosity_omega, and SPHFluidSettings::yield_ratio.

Referenced by BKE_particlesettings_fluid_default_settings(), and psys_in_edit_mode().

◆ BKE_particlesystem_id_loop()

void BKE_particlesystem_id_loop ( ParticleSystem * psys,
ParticleSystemIDFunc func,
void * userdata )

Definition at line 5008 of file particle_system.cc.

References BKE_lib_query_foreachid_process_flags_get(), BKE_modifier_get_info(), BKE_particlesystem_id_loop(), ParticleData::boid, ParticleSystem::clmd, data, ModifierTypeInfo::foreach_ID_link, BoidParticle::ground, IDWALK_CB_NEVER_NULL, IDWALK_CB_NOP, IDWALK_CB_USER, IDWALK_NO_ORIG_POINTERS_ACCESS, LISTBASE_FOREACH, ClothModifierData::modifier, ParticleSystem::parent, ParticleSystem::part, PART_PHYS_BOIDS, ParticleSystem::particles, particlesystem_modifiersForeachIDLink(), ParticleSettings::phystype, ParticleSystem::target_ob, ParticleSystem::targets, and ModifierData::type.

Referenced by BKE_particlesystem_id_loop(), and object_foreach_id().

◆ BKE_particlesystem_reset_all()

void BKE_particlesystem_reset_all ( struct Object * object)

Reset all particle systems in the given object.

Definition at line 5051 of file particle_system.cc.

References BKE_particlesystem_reset_all(), eModifierType_ParticleSystem, ListBase::first, ID_RECALC_PSYS_RESET, Object::modifiers, ModifierData::next, ParticleSystemModifierData::psys, and ParticleSystem::recalc.

Referenced by BKE_particlesystem_reset_all(), blender::ed::sculpt_paint::dyntopo::disable(), and blender::ed::object::editmode_exit_ex().

◆ BKE_psys_collision_neartest_cb()

void BKE_psys_collision_neartest_cb ( void * userdata,
int index,
const BVHTreeRay * ray,
BVHTreeRayHit * hit )

Definition at line 2778 of file particle_system.cc.

References BKE_psys_collision_neartest_cb(), collision_point_velocity(), collision_sphere_to_edges(), collision_sphere_to_tri(), collision_sphere_to_verts(), ParticleCollision::current, CollisionModifierData::current_v, BVHTreeRayHit::dist, ParticleCollision::hit, BVHTreeRayHit::index, ParticleCollisionElement::index, ParticleCollisionElement::inside, ParticleCollision::md, ParticleCollision::original_ray_length, ParticleCollision::pce, BVHTreeRay::radius, ParticleCollisionElement::tot, ParticleCollisionElement::v, v, CollisionModifierData::vert_tris, CollisionModifierData::x, ParticleCollisionElement::x, and x.

◆ bvhtree_balance_isolated()

void bvhtree_balance_isolated ( void * userdata)
static

Definition at line 1305 of file particle_system.cc.

References BLI_bvhtree_balance(), and bvhtree_balance_isolated().

Referenced by bvhtree_balance_isolated(), and psys_update_particle_bvhtree().

◆ cached_step()

void cached_step ( ParticleSimulationData * sim,
float cfra,
const bool use_render_params )
static

Definition at line 4102 of file particle_system.cc.

References ParticleData::alive, cached_step(), ParticleData::dietime, ParticleData::flag, ParticleSettings::flag, PointCache::flag, LOOP_PARTICLES, PAMAP_SIZE, PARS_ALIVE, PARS_DEAD, PARS_NO_DISP, PARS_UNBORN, ParticleSystem::part, PART_UNBORN, PARTICLE_P, ParticleSystem::pointcache, ParticleSimulationData::psys, psys_frand(), psys_get_current_display_percentage(), psys_get_texture(), psys_sim_data_free(), psys_sim_data_init(), psys_update_effectors(), PTCACHE_EXTERNAL, ParticleSettings::randsize, reset_particle(), ParticleData::size, ParticleSettings::size, ParticleTexture::size, and ParticleData::time.

Referenced by cached_step(), and system_step().

◆ collision_check()

void collision_check ( ParticleSimulationData * sim,
int p,
float dfra,
float cfra )
static

Definition at line 3106 of file particle_system.cc.

References ParticleCollision::acc, ParticleCollision::boid, ParticleData::boid, BOID_ALLOW_LAND, ParticleCollision::boid_z, ParticleSettings::boids, ParticleCollision::cfra, ParticleSystem::cfra, ParticleKey::co, ParticleCollision::co1, ParticleCollision::co2, ParticleSimulationData::colliders, collision_check(), collision_detect(), collision_fail(), COLLISION_MIN_RADIUS, collision_response(), copy_v3_v3(), ParticleCollision::f, ParticleSettings::flag, BoidParticle::ground, ParticleCollision::inv_timestep, ParticleCollision::inv_total_time, mul_v3_fl(), ParticleCollision::old_cfra, BoidSettings::options, ParticleSystem::part, PART_DIE_ON_COL, PART_PHYS_BOIDS, PART_ROT_DYN, PART_SIZE_DEFL, PARTICLE_COLLISION_MAX_COLLISIONS, ParticleSystem::particles, ParticleSettings::phystype, ParticleData::prev_state, ParticleSimulationData::psys, psys_get_timestep(), ParticleCollision::radius, ParticleData::size, ParticleCollision::skip, ParticleCollision::skip_count, ParticleData::state, sub_v3_v3v3(), ParticleCollision::total_time, ParticleCollision::ve1, ParticleCollision::ve2, and ParticleKey::vel.

Referenced by collision_check(), dynamics_step(), dynamics_step_sph_classical_integrate_task_cb_ex(), and dynamics_step_sph_ddr_task_cb_ex().

◆ collision_detect()

int collision_detect ( ParticleData * pa,
ParticleCollision * col,
BVHTreeRayHit * hit,
ListBase * colliders )
static

Definition at line 2818 of file particle_system.cc.

References BKE_psys_collision_neartest_cb(), BLI_bvhtree_ray_cast_ex(), BLI_listbase_is_empty(), BVH_RAYCAST_DEFAULT, BVH_RAYCAST_WATERTIGHT, CollisionModifierData::bvhtree, ParticleCollision::cfra, ParticleCollision::co1, ParticleCollision::co2, collision_detect(), ParticleCollision::current, BVHTreeRayHit::dist, ParticleCollision::emitter, ParticleCollision::fac1, ParticleCollision::fac2, i, BVHTreeRayHit::index, ParticleCollisionElement::inside, LISTBASE_FOREACH, ParticleCollision::md, normalize_v3(), ParticleCollision::old_cfra, ParticleCollision::original_ray_length, ParticleCollision::pce, ParticleCollision::radius, ParticleCollision::skip, ParticleCollision::skip_count, sub_v3_v3v3(), and ParticleData::time.

Referenced by collision_check(), and collision_detect().

◆ collision_fail()

void collision_fail ( ParticleData * pa,
ParticleCollision * col )
static

Definition at line 3086 of file particle_system.cc.

References ParticleKey::co, ParticleCollision::co1, collision_fail(), collision_point_on_surface(), copy_v3_v3(), ParticleCollision::inv_timestep, mul_v3_fl(), ParticleCollision::pce, ParticleData::state, ParticleCollisionElement::vel, and ParticleKey::vel.

Referenced by collision_check(), and collision_fail().

◆ collision_interpolate_element()

void collision_interpolate_element ( ParticleCollisionElement * pce,
float t,
float fac,
ParticleCollision * col )
static
Parameters
tis the current time for newton rhapson.
facis the starting factor for current collision iteration.
colThe particle collision, col->fac's are factors for the particle sub-frame step start and end during collision modifier step.

Definition at line 2449 of file particle_system.cc.

References collision_interpolate_element(), ParticleCollision::fac1, ParticleCollision::fac2, madd_v3_v3v3fl(), mul(), ParticleCollisionElement::tot, ParticleCollisionElement::v, ParticleCollisionElement::x, ParticleCollisionElement::x0, ParticleCollisionElement::x1, and ParticleCollisionElement::x2.

Referenced by collision_interpolate_element(), collision_newton_rhapson(), collision_point_distance_with_normal(), and collision_point_on_surface().

◆ collision_newton_rhapson()

float collision_newton_rhapson ( ParticleCollision * col,
float radius,
ParticleCollisionElement * pce,
NRDistanceFunc distance_func )
static

Definition at line 2557 of file particle_system.cc.

References CLAMP, ParticleCollision::co1, ParticleCollision::co2, COLLISION_INIT_STEP, collision_interpolate_element(), collision_newton_rhapson(), COLLISION_ZERO, copy_v3_v3(), ParticleCollision::f, ParticleCollisionElement::inside, interp_v3_v3v3(), ParticleCollisionElement::inv_nor, ParticleCollision::inv_total_time, ParticleCollisionElement::nor, nr_signed_distance_to_plane(), and ParticleCollisionElement::p.

Referenced by collision_newton_rhapson(), collision_sphere_to_edges(), collision_sphere_to_tri(), and collision_sphere_to_verts().

◆ collision_point_distance_with_normal()

float collision_point_distance_with_normal ( float p[3],
ParticleCollisionElement * pce,
float fac,
ParticleCollision * col,
float * nor )
static

Definition at line 2484 of file particle_system.cc.

References collision_interpolate_element(), collision_point_distance_with_normal(), dot_v3v3(), e, madd_v3_v3v3fl(), normalize_v3(), nr_signed_distance_to_plane(), sub_v3_v3v3(), ParticleCollisionElement::tot, ParticleCollisionElement::x0, and ParticleCollisionElement::x1.

Referenced by collision_point_distance_with_normal(), and collision_response().

◆ collision_point_on_surface()

void collision_point_on_surface ( const float p[3],
ParticleCollisionElement * pce,
float fac,
ParticleCollision * col,
float * co )
static

Definition at line 2510 of file particle_system.cc.

References collision_interpolate_element(), collision_point_on_surface(), cross_v3_v3v3(), dot_v3v3(), e, ParticleCollisionElement::inv_nor, madd_v3_v3fl(), madd_v3_v3v3fl(), negate_v3(), normalize_v3(), ParticleCollision::radius, sub_v3_v3v3(), ParticleCollisionElement::tot, ParticleCollisionElement::uv, ParticleCollisionElement::x0, ParticleCollisionElement::x1, and ParticleCollisionElement::x2.

Referenced by collision_fail(), and collision_point_on_surface().

◆ collision_point_velocity()

void collision_point_velocity ( ParticleCollisionElement * pce)
static

Definition at line 2468 of file particle_system.cc.

References collision_point_velocity(), copy_v3_v3(), madd_v3_v3fl(), sub_v3_v3v3(), ParticleCollisionElement::tot, ParticleCollisionElement::uv, ParticleCollisionElement::v, v, and ParticleCollisionElement::vel.

Referenced by BKE_psys_collision_neartest_cb(), and collision_point_velocity().

◆ collision_response()

int collision_response ( ParticleSimulationData * sim,
ParticleData * pa,
ParticleCollision * col,
BVHTreeRayHit * hit,
int kill,
int dynamic_rotation )
static

Definition at line 2882 of file particle_system.cc.

References ParticleCollision::acc, add_v3_v3(), add_v3_v3v3(), ParticleData::alive, ParticleKey::ave, BLI_rng_get_float(), ParticleCollision::boid, ParticleData::boid, ParticleCollision::boid_z, ParticleCollision::cfra, CLAMP, ParticleKey::co, ParticleCollision::co1, ParticleCollision::co2, COLLISION_MIN_DISTANCE, collision_point_distance_with_normal(), collision_response(), copy_v3_v3(), cross_v3_v3v3(), BoidParticle::data, ParticleData::dietime, BVHTreeRayHit::dist, distance(), dot(), dot_v3v3(), eBoidMode_OnLand, ParticleCollision::f, PartDeflect::flag, ParticleCollision::hit, interp_qt_qtqt(), interp_v3_v3v3(), ParticleCollision::inv_timestep, madd_v3_v3fl(), madd_v3_v3v3fl(), BoidData::mode, mul_v3_fl(), mul_v3_v3fl(), negate_v3_v3(), ParticleCollisionElement::nor, ParticleCollision::old_cfra, ParticleCollision::original_ray_length, PARS_DYING, ParticleCollision::pce, Object::pd, PartDeflect::pdef_damp, PartDeflect::pdef_frict, PartDeflect::pdef_perm, PartDeflect::pdef_rdamp, PartDeflect::pdef_rfrict, PartDeflect::pdef_stickness, PDEFLE_KILL_PART, ParticleData::prev_state, ParticleCollision::radius, ParticleSimulationData::rng, ParticleKey::rot, ParticleData::size, ParticleCollision::skip, ParticleCollision::skip_count, ParticleData::state, sub_v3_v3v3(), ParticleCollision::total_time, ParticleCollision::ve1, ParticleCollision::ve2, ParticleCollisionElement::vel, ParticleKey::vel, and x.

Referenced by collision_check(), and collision_response().

◆ collision_sphere_to_edges()

int collision_sphere_to_edges ( ParticleCollision * col,
float radius,
ParticleCollisionElement * pce,
float * t )
static

Definition at line 2698 of file particle_system.cc.

References collision_newton_rhapson(), collision_sphere_to_edges(), dot_v3v3(), e, i, ParticleCollisionElement::inside, madd_v3_v3v3fl(), normalize_v3(), nr_distance_to_edge(), ParticleCollisionElement::p, ParticleCollision::pce, result, sub_v3_v3v3(), ParticleCollisionElement::tot, ParticleCollisionElement::v, ParticleCollisionElement::x, ParticleCollisionElement::x0, and ParticleCollisionElement::x1.

Referenced by BKE_psys_collision_neartest_cb(), and collision_sphere_to_edges().

◆ collision_sphere_to_tri()

int collision_sphere_to_tri ( ParticleCollision * col,
float radius,
ParticleCollisionElement * pce,
float * t )
static

Definition at line 2652 of file particle_system.cc.

References collision_newton_rhapson(), collision_sphere_to_tri(), dot_v3v3(), ParticleCollisionElement::inside, ParticleCollisionElement::inv_nor, nr_signed_distance_to_plane(), ParticleCollisionElement::p, ParticleCollision::pce, result, sub_v3_v3v3(), v, ParticleCollisionElement::x0, ParticleCollisionElement::x1, and ParticleCollisionElement::x2.

Referenced by BKE_psys_collision_neartest_cb(), and collision_sphere_to_tri().

◆ collision_sphere_to_verts()

int collision_sphere_to_verts ( ParticleCollision * col,
float radius,
ParticleCollisionElement * pce,
float * t )
static

Definition at line 2745 of file particle_system.cc.

References collision_newton_rhapson(), collision_sphere_to_verts(), i, ParticleCollisionElement::inside, normalize_v3(), nr_distance_to_vert(), ParticleCollisionElement::p, ParticleCollision::pce, result, sub_v3_v3v3(), ParticleCollisionElement::tot, ParticleCollisionElement::v, ParticleCollisionElement::x, and ParticleCollisionElement::x0.

Referenced by BKE_psys_collision_neartest_cb(), and collision_sphere_to_verts().

◆ do_hair_dynamics()

void do_hair_dynamics ( ParticleSimulationData * sim)
static

Definition at line 3440 of file particle_system.cc.

References BKE_id_copy_ex(), BKE_id_free(), BKE_modifier_new(), ParticleSystem::clmd, CLOTH_COLLSETTINGS_FLAG_SELF, CLOTH_SIMSETTINGS_FLAG_RESIST_SPRING_COMPRESS, clothModifier_do(), ClothModifierData::coll_parms, ParticleSimulationData::depsgraph, do_hair_dynamics(), Mesh::edges_num, ClothSimSettings::effector_weights, ParticleSettings::effector_weights, eModifierType_Cloth, ParticleData::flag, ClothCollSettings::flags, ClothSimSettings::flags, ClothSimSettings::goalspring, hair_create_input_mesh(), ParticleSystem::hair_in_mesh, ParticleSystem::hair_out_mesh, ClothModifierData::hairdata, Mesh::id, LIB_ID_COPY_LOCALIZE, LOOP_PARTICLES, MEM_freeN(), ParticleSimulationData::ob, PARS_UNEXIST, ParticleSystem::part, PARTICLE_P, ClothModifierData::point_cache, ParticleSystem::pointcache, ParticleSimulationData::psys, ParticleSimulationData::scene, ClothModifierData::sim_parms, ParticleData::totkey, and Mesh::verts_num.

Referenced by do_hair_dynamics(), and hair_step().

◆ dynamics_step()

void dynamics_step ( ParticleSimulationData * sim,
float cfra )
static

Definition at line 3821 of file particle_system.cc.

References ParticleData::alive, basic_integrate(), basic_rotate(), BKE_collider_cache_create(), BKE_collider_cache_free(), BLI_findlink(), BLI_parallel_range_settings_defaults(), BLI_rng_free(), BLI_rng_new_srandom(), BLI_spin_end(), BLI_spin_init(), BLI_task_parallel_range(), boid_body(), boid_brain(), boids_precalc_rules(), BoidBrainData::cfra, DynamicStepSolverTaskData::cfra, ParticleSystem::cfra, ParticleSimulationData::colliders, collision_check(), ParticleSettings::collision_group, copy_particle_key(), ParticleSimulationData::depsgraph, BoidBrainData::dfra, ParticleData::dietime, DynamicStepSolverTaskData::dtime, dynamics_step(), dynamics_step_sph_classical_basic_integrate_task_cb_ex(), dynamics_step_sph_classical_calc_density_task_cb_ex(), dynamics_step_sph_classical_integrate_task_cb_ex(), dynamics_step_sph_ddr_task_cb_ex(), dynamics_step_sphdata_reduce(), ELEM, ListBase::first, ParticleData::flag, ParticleSettings::flag, ParticleSettings::fluid, TaskParallelSettings::func_reduce, BoidBrainData::goal_ob, LOOP_DYNAMIC_PARTICLES, LOOP_EXISTING_PARTICLES, LOOP_SHOWN_PARTICLES, ParticleTarget::next, ParticleSimulationData::ob, ParticleTarget::ob, PAMAP_SIZE, PARS_ALIVE, PARS_DEAD, PARS_DYING, PARS_NO_DISP, PARS_UNBORN, PARS_UNEXIST, BoidBrainData::part, ParticleSystem::part, PART_HAIR, PART_PHYS_BOIDS, PART_PHYS_FLUID, PART_PHYS_NEWTON, PART_PHYS_NO, PART_UNBORN, PARTICLE_P, Object::particlesystem, ParticleSettings::phystype, ParticleSystem::pointcache, ParticleData::prev_state, ParticleSimulationData::psys, ParticleTarget::psys, psys_frand(), psys_get_target_system(), psys_get_texture(), psys_get_timestep(), psys_sph_finalize(), psys_sph_init(), psys_update_effectors(), psys_update_particle_bvhtree(), psys_update_particle_tree(), ParticleSettings::randsize, reset_particle(), BoidBrainData::rng, ParticleSimulationData::rng, ParticleSystem::seed, BoidBrainData::sim, DynamicStepSolverTaskData::sim, ParticleData::size, ParticleSettings::size, ParticleTexture::size, SPHFluidSettings::solver, SPH_SOLVER_DDR, sph_springs_modify(), DynamicStepSolverTaskData::spin, ParticleData::state, PointCache::step, ParticleSystem::targets, ParticleData::time, ParticleKey::time, BoidBrainData::timestep, DynamicStepSolverTaskData::timestep, ParticleSystem::totpart, ParticleSettings::type, TaskParallelSettings::use_threading, TaskParallelSettings::userdata_chunk, and TaskParallelSettings::userdata_chunk_size.

Referenced by dynamics_step(), and system_step().

◆ dynamics_step_sph_classical_basic_integrate_task_cb_ex()

void dynamics_step_sph_classical_basic_integrate_task_cb_ex ( void *__restrict userdata,
const int p,
const TaskParallelTLS * __restrict )
static

Definition at line 3753 of file particle_system.cc.

References basic_integrate(), data, dynamics_step_sph_classical_basic_integrate_task_cb_ex(), ParticleSystem::particles, ParticleSimulationData::psys, ParticleData::state, and ParticleKey::time.

Referenced by dynamics_step(), and dynamics_step_sph_classical_basic_integrate_task_cb_ex().

◆ dynamics_step_sph_classical_calc_density_task_cb_ex()

void dynamics_step_sph_classical_calc_density_task_cb_ex ( void *__restrict userdata,
const int p,
const TaskParallelTLS *__restrict tls )
static

Definition at line 3769 of file particle_system.cc.

References data, dynamics_step_sph_classical_calc_density_task_cb_ex(), ParticleSystem::particles, ParticleSimulationData::psys, sphclassical_calc_dens(), ParticleData::state, and ParticleKey::time.

Referenced by dynamics_step(), and dynamics_step_sph_classical_calc_density_task_cb_ex().

◆ dynamics_step_sph_classical_integrate_task_cb_ex()

void dynamics_step_sph_classical_integrate_task_cb_ex ( void *__restrict userdata,
const int p,
const TaskParallelTLS *__restrict tls )
static

Definition at line 3787 of file particle_system.cc.

References basic_rotate(), ParticleSimulationData::colliders, collision_check(), data, dynamics_step_sph_classical_integrate_task_cb_ex(), ParticleSystem::part, PART_TIME_AUTOSF, ParticleSystem::particles, ParticleSimulationData::psys, sph_integrate(), ParticleData::state, ParticleKey::time, ParticleSettings::time_flag, and update_courant_num().

Referenced by dynamics_step(), and dynamics_step_sph_classical_integrate_task_cb_ex().

◆ dynamics_step_sph_ddr_task_cb_ex()

void dynamics_step_sph_ddr_task_cb_ex ( void *__restrict userdata,
const int p,
const TaskParallelTLS *__restrict tls )
static

Definition at line 3717 of file particle_system.cc.

References basic_integrate(), basic_rotate(), ParticleSimulationData::colliders, collision_check(), data, dynamics_step_sph_ddr_task_cb_ex(), ParticleSystem::part, PART_TIME_AUTOSF, ParticleSystem::particles, ParticleSimulationData::psys, sph_integrate(), ParticleData::state, ParticleKey::time, ParticleSettings::time_flag, and update_courant_num().

Referenced by dynamics_step(), and dynamics_step_sph_ddr_task_cb_ex().

◆ dynamics_step_sphdata_reduce()

void dynamics_step_sphdata_reduce ( const void * __restrict,
void *__restrict join_v,
void *__restrict chunk_v )
static

Definition at line 3700 of file particle_system.cc.

References BLI_buffer_append_array, BLI_buffer_at, BLI_buffer_field_free, BLI_Buffer::count, dynamics_step_sphdata_reduce(), and SPHData::new_springs.

Referenced by dynamics_step(), and dynamics_step_sphdata_reduce().

◆ emit_particles()

int emit_particles ( ParticleSimulationData * sim,
PTCacheID * pid,
float  )
static

Definition at line 4453 of file particle_system.cc.

References emit_particles(), ParticleSimulationData::psys, realloc_particles(), tot_particles(), and ParticleSystem::totpart.

Referenced by emit_particles(), particle_system_update(), and system_step().

◆ evaluate_emitter_anim()

void evaluate_emitter_anim ( Depsgraph * depsgraph,
Scene * scene,
Object * ob,
float cfra )
static

Definition at line 1038 of file particle_system.cc.

References BKE_object_where_is_calc_time(), evaluate_emitter_anim(), and Object::parent.

Referenced by evaluate_emitter_anim(), particle_system_update(), and reset_particle().

◆ free_unexisting_particles()

void free_unexisting_particles ( ParticleSimulationData * sim)
static

Definition at line 606 of file particle_system.cc.

References ParticleData::boid, free_unexisting_particles(), LOOP_PARTICLES, MEM_calloc_arrayN(), MEM_freeN(), PARS_UNEXIST, PARTICLE_P, ParticleSystem::particles, ParticleSimulationData::psys, ParticleSystem::totpart, and ParticleSystem::totunexist.

Referenced by free_unexisting_particles(), particle_system_update(), and system_step().

◆ get_angular_velocity_vector()

void get_angular_velocity_vector ( short avemode,
ParticleKey * state,
float vec[3] )
static

Definition at line 662 of file particle_system.cc.

References copy_v3_v3(), cross_v3_v3v3(), get_angular_velocity_vector(), PART_AVE_GLOBAL_X, PART_AVE_GLOBAL_Y, PART_AVE_GLOBAL_Z, PART_AVE_HORIZONTAL, PART_AVE_VELOCITY, PART_AVE_VERTICAL, and state.

Referenced by basic_rotate(), get_angular_velocity_vector(), and psys_get_birth_coords().

◆ get_base_time_step()

float get_base_time_step ( ParticleSettings * part)
static

Definition at line 3640 of file particle_system.cc.

References get_base_time_step(), and ParticleSettings::subframes.

Referenced by get_base_time_step(), system_step(), and update_timestep().

◆ hair_create_input_mesh()

void hair_create_input_mesh ( ParticleSimulationData * sim,
int totpoint,
int totedge,
Mesh ** r_mesh )
static

Definition at line 3310 of file particle_system.cc.

References add_v3_v3v3(), ParticleSettings::bending_random, ClothHairData::bending_stiffness, BKE_mesh_new_nomain(), ParticleSystem::clmd, HairKey::co, copy_m3_m4(), copy_v3_v3(), ParticleData::flag, ParticleSettings::from, ParticleData::hair, hair_create_input_mesh(), ParticleData::hair_index, hair_set_pinning(), ClothModifierData::hairdata, len_v3v3(), length(), ClothHairData::loc, LOOP_PARTICLES, MEM_malloc_arrayN(), ParticleSystemModifierData::mesh_final, mul_m4_m4m4(), mul_m4_v3(), normalize_m4(), ParticleSimulationData::ob, PARS_UNEXIST, ParticleSystem::part, PARTICLE_P, ParticleSimulationData::psmd, ParticleSimulationData::psys, psys_frand(), psys_hair_use_simulation(), psys_mat_hair_to_object(), ClothHairData::radius, ClothHairData::rot, ClothModifierData::sim_parms, ParticleSettings::size, sub_v3_v3(), ParticleData::totkey, ClothSimSettings::vgroup_mass, and HairKey::weight.

Referenced by do_hair_dynamics(), and hair_create_input_mesh().

◆ hair_needs_recalc()

int hair_needs_recalc ( ParticleSystem * psys)
static

Definition at line 4744 of file particle_system.cc.

References ParticleSystem::edit, PTCacheEdit::edited, ParticleSettings::flag, ParticleSystem::flag, hair_needs_recalc(), ID_RECALC_PSYS_RESET, ParticleSystem::part, PART_HAIR_REGROW, PSYS_EDITED, PSYS_HAIR_DONE, and ParticleSystem::recalc.

Referenced by hair_needs_recalc(), and particle_system_update().

◆ hair_set_pinning()

MDeformVert * hair_set_pinning ( MDeformVert * dvert,
float weight )
static

Definition at line 3296 of file particle_system.cc.

References MDeformVert::dw, hair_set_pinning(), MEM_callocN(), MDeformVert::totweight, and MDeformWeight::weight.

Referenced by hair_create_input_mesh(), and hair_set_pinning().

◆ hair_step()

void hair_step ( ParticleSimulationData * sim,
float cfra,
const bool use_render_params )
static

Definition at line 3516 of file particle_system.cc.

References ParticleSystem::clmd, cloth_free_modifier(), do_hair_dynamics(), ParticleData::flag, ParticleSystem::flag, hair_step(), ID_RECALC_PSYS_RESET, LOOP_PARTICLES, ParticleSystemModifierData::mesh_final, ParticleSystemModifierData::mesh_original, ParticleSimulationData::ob, PARS_NO_DISP, ParticleSystem::part, PART_HAIR, PARTICLE_P, ParticleSystem::particles, ParticleSimulationData::psmd, ParticleSimulationData::psys, psys_calc_dmcache(), psys_frand(), psys_get_current_display_percentage(), PSYS_HAIR_DYNAMICS, PSYS_HAIR_UPDATED, psys_update_effectors(), psys_update_path_cache(), ParticleSettings::randsize, ParticleSystem::recalc, ParticleData::size, ParticleSettings::size, and ParticleSettings::type.

Referenced by hair_step(), and particle_system_update().

◆ init_particle()

void init_particle ( struct ParticleSimulationData * sim,
struct ParticleData * pa )

Set particle parameters that don't change during particle's life.

Definition at line 567 of file particle_system.cc.

References ParticleSettings::end, ParticleData::flag, ParticleData::hair_index, init_particle(), PARS_UNEXIST, ParticleSystem::part, ParticleSystem::particles, ParticleSimulationData::psys, ParticleSettings::sta, ParticleData::time, and ParticleSystem::totpart.

Referenced by BKE_psys_collision_neartest_cb(), brush_add(), init_particle(), and initialize_all_particles().

◆ init_particle_texture()

void init_particle_texture ( ParticleSimulationData * sim,
ParticleData * pa,
int p )
static

Definition at line 543 of file particle_system.cc.

References ParticleSettings::end, ParticleTexture::exist, ParticleData::flag, init_particle_texture(), PAMAP_INIT, PARS_UNEXIST, ParticleSystem::part, PART_EMITTER, PART_HAIR, ParticleSimulationData::psys, psys_frand(), psys_get_texture(), ParticleSettings::sta, ParticleData::time, ParticleTexture::time, and ParticleSettings::type.

Referenced by init_particle_texture(), and reset_particle().

◆ initialize_all_particles()

void initialize_all_particles ( ParticleSimulationData * sim)
static

Definition at line 581 of file particle_system.cc.

References ParticleSettings::distr, ELEM, ParticleSettings::from, init_particle(), initialize_all_particles(), LOOP_PARTICLES, PARS_UNEXIST, ParticleSystem::part, PART_DISTR_GRID, PART_FROM_CHILD, PART_FROM_VERT, PARTICLE_P, and ParticleSimulationData::psys.

Referenced by initialize_all_particles(), particle_system_update(), and system_step().

◆ integrate_particle()

void integrate_particle ( ParticleSettings * part,
ParticleData * pa,
float dtime,
float * external_acceleration,
void(* force_func )(void *forcedata, ParticleKey *state, float *force, float *impulse),
void * forcedata )
static

Definition at line 1396 of file particle_system.cc.

References add_v3_v3(), add_v3_v3v3(), ParticleKey::co, copy_particle_key(), copy_v3_v3(), ParticleSettings::flag, i, integrate_particle(), ParticleSettings::integrator, madd_v3_v3fl(), madd_v3_v3v3fl(), ParticleSettings::mass, mul_v3_fl(), mul_v3_v3fl(), PART_INT_EULER, PART_INT_MIDPOINT, PART_INT_RK4, PART_INT_VERLET, PART_SIZEMASS, ParticleData::prev_state, ParticleData::size, ParticleData::state, state, sub_v3_v3v3(), ParticleKey::time, ParticleKey::vel, ZERO_F43, and zero_v3().

Referenced by basic_integrate(), integrate_particle(), and sph_integrate().

◆ nr_distance_to_edge()

float nr_distance_to_edge ( float * p,
float radius,
ParticleCollisionElement * pce,
float *  )
static

Definition at line 2421 of file particle_system.cc.

References cross_v3_v3v3(), fabsf, len_v3(), nr_distance_to_edge(), sub_v3_v3v3(), v2, ParticleCollisionElement::x0, and ParticleCollisionElement::x1.

Referenced by collision_sphere_to_edges(), and nr_distance_to_edge().

◆ nr_distance_to_vert()

float nr_distance_to_vert ( float * p,
float radius,
ParticleCollisionElement * pce,
float *  )
static

Definition at line 2436 of file particle_system.cc.

References len_v3v3(), nr_distance_to_vert(), and ParticleCollisionElement::x0.

Referenced by collision_sphere_to_verts(), and nr_distance_to_vert().

◆ nr_signed_distance_to_plane()

float nr_signed_distance_to_plane ( float * p,
float radius,
ParticleCollisionElement * pce,
float * nor )
static

Definition at line 2389 of file particle_system.cc.

References cross_v3_v3v3(), dot_v3v3(), ParticleCollisionElement::inv_nor, negate_v3(), normalize_v3(), nr_signed_distance_to_plane(), sub_v3_v3v3(), ParticleCollisionElement::x0, ParticleCollisionElement::x1, and ParticleCollisionElement::x2.

Referenced by collision_newton_rhapson(), collision_point_distance_with_normal(), collision_sphere_to_tri(), and nr_signed_distance_to_plane().

◆ particle_settings_free_local()

void particle_settings_free_local ( ParticleSettings * particle_settings)
static

Definition at line 4763 of file particle_system.cc.

References BKE_libblock_free_data(), BKE_libblock_free_datablock(), BLI_assert, ParticleSettings::id, MEM_freeN(), particle_settings_free_local(), and ID::py_instance.

Referenced by particle_settings_free_local(), and particle_system_update().

◆ particle_settings_localize()

ParticleSettings * particle_settings_localize ( ParticleSettings * particle_settings)
static

Definition at line 4756 of file particle_system.cc.

References BKE_id_copy_ex(), ParticleSettings::id, LIB_ID_COPY_LOCALIZE, and particle_settings_localize().

Referenced by particle_settings_localize(), and particle_system_update().

◆ particle_system_update()

void particle_system_update ( struct Depsgraph * depsgraph,
struct Scene * scene,
struct Object * ob,
struct ParticleSystem * psys,
bool use_render_params )

Main particle update call, checks that things are ok on the large scale and then advances in to actual particle calculations depending on particle type.

Definition at line 4771 of file particle_system.cc.

References ParticleSettings::adt, ADT_RECALC_ANIM, BKE_animsys_eval_context_construct(), BKE_animsys_evaluate_animdata(), BKE_mesh_tessface_ensure(), BKE_particle_batch_cache_dirty_tag(), BKE_PARTICLE_BATCH_DIRTY_ALL, ParticleSystem::cfra, DEG_get_ctime(), DEG_is_active(), ParticleSimulationData::depsgraph, distribute_particles(), ParticleSystem::edit, emit_particles(), eParticleSystemFlag_Pars, eParticleSystemFlag_psys_updated, evaluate_emitter_anim(), ParticleData::flag, ParticleDrawData::flag, ParticleSettings::flag, ParticleSystem::flag, ParticleSystemModifierData::flag, PTCacheEdit::flags, ParticleSystem::free_edit, free_hair(), free_keyed_keys(), free_unexisting_particles(), ParticleSettings::from, hair_needs_recalc(), hair_step(), ParticleSettings::hair_step, i, ParticleSettings::id, ID_RECALC_PSYS_RESET, ParticleSystem::imat, initialize_all_particles(), invert_m4_m4(), LOOP_EXISTING_PARTICLES, ParticleSystemModifierData::mesh_final, ParticleSimulationData::ob, PAMAP_SIZE, PARS_NO_DISP, ParticleSystem::part, PART_FROM_VERT, PART_HAIR, PART_HAIR_REGROW, PART_PHYS_KEYED, PART_PHYS_NO, PARTICLE_DRAW_DATA_UPDATED, PARTICLE_P, particle_settings_free_local(), particle_settings_localize(), particle_system_update(), particles_fluid_step(), particles_has_bubble(), particles_has_flip(), particles_has_foam(), particles_has_spray(), particles_has_tracer(), ParticleSystem::pdd, ParticleSettings::phystype, ParticleSimulationData::psmd, PTCacheEdit::psmd_eval, ParticleSimulationData::psys, PTCacheEdit::psys, psys_check_enabled(), psys_count_keyed_targets(), PSYS_EDITED, PTCacheEdit::psys_eval, psys_frand(), psys_free_path_cache(), psys_get_current_display_percentage(), psys_get_modifier(), psys_get_texture(), PSYS_HAIR_DONE, PSYS_OB_ANIM_RESTORE, psys_orig_get(), psys_prepare_physics(), psys_reset(), PSYS_RESET_ALL, PSYS_SHARED_CACHES, psys_update_path_cache(), PT_CACHE_EDIT_UPDATE_PARTICLE_FROM_EVAL, ParticleSettings::randsize, ParticleSystem::recalc, reset_particle(), save_hair(), ParticleSimulationData::scene, set_keyed_keys(), ParticleData::size, ParticleSettings::size, ParticleTexture::size, system_step(), ParticleSettings::totpart, ParticleSystem::totpart, ParticleSystem::totunexist, and ParticleSettings::type.

Referenced by BKE_object_handle_data_update(), deform_verts(), particle_system_update(), and psys_unique_name().

◆ particles_are_dynamic()

int particles_are_dynamic ( ParticleSystem * psys)
static

Definition at line 79 of file particle_system.cc.

References ELEM, ParticleSystem::flag, PointCache::flag, ParticleSystem::part, PART_HAIR, PART_PHYS_BOIDS, PART_PHYS_FLUID, PART_PHYS_NEWTON, particles_are_dynamic(), ParticleSettings::phystype, ParticleSystem::pointcache, PSYS_HAIR_DYNAMICS, PTCACHE_BAKED, and ParticleSettings::type.

Referenced by particles_are_dynamic(), and psys_get_current_display_percentage().

◆ particles_fluid_step()

void particles_fluid_step ( ParticleSimulationData * sim,
int cfra,
const bool use_render_params )
static

Definition at line 4176 of file particle_system.cc.

References add_v3_v3(), add_v3_v3v3(), ParticleData::alive, ParticleKey::ave, BKE_modifiers_findby_type(), BLI_rng_free(), BLI_rng_get_double(), BLI_rng_new_srandom(), BLI_snprintf(), FluidDomainSettings::cell_size, ParticleKey::co, copy_v3_v3(), ParticleData::dietime, ParticleSettings::disp, FluidModifierData::domain, FluidDomainSettings::dx, RenderData::efra, eModifierType_Fluid, ParticleSettings::end, fabsf, FluidDomainSettings::fluid, FLUID_DOMAIN_PARTICLE_BUBBLE, FLUID_DOMAIN_PARTICLE_FLIP, FLUID_DOMAIN_PARTICLE_FOAM, FLUID_DOMAIN_PARTICLE_SPRAY, FLUID_DOMAIN_PARTICLE_TRACER, ParticleData::lifetime, ParticleSettings::lifetime, madd_v3fl_v3fl_v3fl_v3i(), manta_get_res_x(), manta_get_res_y(), manta_get_res_z(), manta_liquid_get_flip_particle_flag_at(), manta_liquid_get_flip_particle_position_x_at(), manta_liquid_get_flip_particle_position_y_at(), manta_liquid_get_flip_particle_position_z_at(), manta_liquid_get_flip_particle_velocity_x_at(), manta_liquid_get_flip_particle_velocity_y_at(), manta_liquid_get_flip_particle_velocity_z_at(), manta_liquid_get_num_flip_particles(), manta_liquid_get_num_snd_particles(), manta_liquid_get_particle_res_x(), manta_liquid_get_particle_res_y(), manta_liquid_get_particle_res_z(), manta_liquid_get_particle_upres(), manta_liquid_get_snd_particle_flag_at(), manta_liquid_get_snd_particle_position_x_at(), manta_liquid_get_snd_particle_position_y_at(), manta_liquid_get_snd_particle_position_z_at(), manta_liquid_get_snd_particle_velocity_x_at(), manta_liquid_get_snd_particle_velocity_y_at(), manta_liquid_get_snd_particle_velocity_z_at(), max, MEM_freeN(), min, mul_m4_v3(), mul_v3_fl(), mul_v3_v3(), ParticleSimulationData::ob, FluidDomainSettings::p0, FluidDomainSettings::p1, PARS_ALIVE, ParticleSystem::part, PART_FLUID_FLIP, FluidDomainSettings::particle_type, PARTICLE_TYPE_BUBBLE, PARTICLE_TYPE_DELETE, PARTICLE_TYPE_FOAM, PARTICLE_TYPE_SPRAY, PARTICLE_TYPE_TRACER, ParticleSystem::particles, particles_fluid_step(), particles_has_bubble(), particles_has_flip(), particles_has_foam(), particles_has_spray(), particles_has_tracer(), printf, ParticleSimulationData::psys, psys_frand(), Scene::r, ParticleSettings::randsize, realloc_particles(), FluidDomainSettings::res_max, FluidDomainSettings::res_min, ParticleSimulationData::rng, ParticleKey::rot, Object::scale, ParticleSimulationData::scene, ParticleSystem::seed, ParticleData::size, ParticleSettings::size, size(), ParticleSettings::sta, ParticleData::state, sub_v3_v3(), sub_v3_v3v3(), ParticleData::time, ParticleSettings::totpart, ParticleSystem::totpart, ParticleSettings::type, unit_qt(), UNUSED_VARS, ParticleKey::vel, and zero_v3().

Referenced by particle_system_update(), and particles_fluid_step().

◆ particles_has_bubble()

bool particles_has_bubble ( short parttype)
static

Definition at line 4166 of file particle_system.cc.

References ELEM, PART_FLUID_BUBBLE, PART_FLUID_FOAMBUBBLE, PART_FLUID_SPRAYFOAMBUBBLE, and particles_has_bubble().

Referenced by particle_system_update(), particles_fluid_step(), and particles_has_bubble().

◆ particles_has_flip()

bool particles_has_flip ( short parttype)
static

Definition at line 4151 of file particle_system.cc.

References PART_FLUID_FLIP, and particles_has_flip().

Referenced by particle_system_update(), particles_fluid_step(), and particles_has_flip().

◆ particles_has_foam()

bool particles_has_foam ( short parttype)
static

Definition at line 4171 of file particle_system.cc.

References ELEM, PART_FLUID_FOAM, PART_FLUID_SPRAYFOAM, PART_FLUID_SPRAYFOAMBUBBLE, and particles_has_foam().

Referenced by particle_system_update(), particles_fluid_step(), and particles_has_foam().

◆ particles_has_spray()

bool particles_has_spray ( short parttype)
static

Definition at line 4161 of file particle_system.cc.

References ELEM, PART_FLUID_SPRAY, PART_FLUID_SPRAYFOAM, PART_FLUID_SPRAYFOAMBUBBLE, and particles_has_spray().

Referenced by particle_system_update(), particles_fluid_step(), and particles_has_spray().

◆ particles_has_tracer()

bool particles_has_tracer ( short parttype)
static

Definition at line 4156 of file particle_system.cc.

References PART_FLUID_TRACER, and particles_has_tracer().

Referenced by particle_system_update(), particles_fluid_step(), and particles_has_tracer().

◆ particlesystem_modifiersForeachIDLink()

void particlesystem_modifiersForeachIDLink ( void * user_data,
Object * ,
ID ** id_pointer,
const LibraryForeachIDCallbackFlag cb_flag )
static

Definition at line 4999 of file particle_system.cc.

References data, and particlesystem_modifiersForeachIDLink().

Referenced by BKE_particlesystem_id_loop(), and particlesystem_modifiersForeachIDLink().

◆ psys_calc_dmcache()

void psys_calc_dmcache ( Object * ob,
Mesh * mesh_final,
Mesh * mesh_original,
ParticleSystem * psys )

Definition at line 304 of file particle_system.cc.

References CD_ORIGINDEX, CustomData_get_layer(), Object::data, DMCACHE_ISCHILD, DMCACHE_NOTFOUND, Mesh::face_data, Mesh::fdata_legacy, ParticleSettings::from, i, LinkNode::link, LOOP_PARTICLES, MEM_calloc_arrayN(), MEM_freeN(), LinkNode::next, ORIGINDEX_NONE, ParticleSystem::part, PART_FROM_VERT, PARTICLE_P, POINTER_AS_INT, POINTER_FROM_INT, psys_calc_dmcache(), psys_particle_dm_face_lookup(), Mesh::runtime, Mesh::totface_legacy, ParticleSettings::use_modifier_stack, Mesh::vert_data, and Mesh::verts_num.

Referenced by BKE_psys_collision_neartest_cb(), distribute_particles_on_dm(), distribute_simple_children(), hair_step(), and psys_calc_dmcache().

◆ psys_changed_type()

void psys_changed_type ( struct Object * ob,
struct ParticleSystem * psys )

System type has changed so set sensible defaults and clear non applicable flags.

Definition at line 4633 of file particle_system.cc.

References BKE_ptcache_id_clear(), BKE_ptcache_id_from_particles(), CLAMP, ParticleSettings::distr, ParticleSettings::draw_as, ELEM, ParticleSettings::end, ParticleSystem::flag, free_hair(), ParticleSettings::lifetime, ParticleSystem::part, PART_DISTR_GRID, PART_DISTR_JIT, PART_DRAW_GR, PART_DRAW_NOT, PART_DRAW_OB, PART_DRAW_PATH, PART_DRAW_REND, PART_HAIR, PART_PHYS_KEYED, ParticleSettings::path_end, ParticleSettings::path_start, ParticleSettings::phystype, psys_changed_type(), PSYS_KEYED, psys_reset(), PSYS_RESET_ALL, PTCACHE_CLEAR_ALL, ParticleSettings::ren_as, and ParticleSettings::type.

Referenced by psys_changed_type(), psys_unique_name(), and blender::ed::curves::convert_to_particle_system::try_convert_single_object().

◆ psys_check_boid_data()

void psys_check_boid_data ( ParticleSystem * psys)

Definition at line 4671 of file particle_system.cc.

References ParticleData::boid, LOOP_PARTICLES, MEM_calloc_arrayN(), MEM_freeN(), ParticleSystem::part, PART_PHYS_BOIDS, PARTICLE_P, ParticleSystem::particles, ParticleSettings::phystype, psys_check_boid_data(), and ParticleSystem::totpart.

Referenced by new_particle_settings_exec(), psys_check_boid_data(), psys_prepare_physics(), and psys_unique_name().

◆ psys_clear_temp_pointcache()

void psys_clear_temp_pointcache ( ParticleSystem * psys)
static

Definition at line 1288 of file particle_system.cc.

References BKE_ptcache_free_mem(), PointCache::flag, PointCache::mem_cache, ParticleSystem::pointcache, psys_clear_temp_pointcache(), and PTCACHE_DISK_CACHE.

Referenced by psys_clear_temp_pointcache(), and system_step().

◆ psys_count_keyed_targets()

void psys_count_keyed_targets ( struct ParticleSimulationData * sim)

Counts valid keyed targets.

Definition at line 1169 of file particle_system.cc.

References ParticleTarget::duration, ListBase::first, ParticleSystem::flag, ParticleSettings::keyed_loops, ParticleTarget::next, ParticleSimulationData::ob, ParticleSystem::part, ParticleSimulationData::psys, psys_count_keyed_targets(), psys_get_target_system(), PSYS_KEYED_TIMING, ParticleSystem::targets, and ParticleSystem::totkeyed.

Referenced by particle_system_update(), psys_count_keyed_targets(), and psys_unique_name().

◆ psys_get_birth_coords()

void psys_get_birth_coords ( ParticleSimulationData * sim,
ParticleData * pa,
ParticleKey * state,
float dtime,
float cfra )

Definition at line 698 of file particle_system.cc.

References ParticleSettings::avefac, ParticleSettings::avemode, axis_angle_to_quat(), BLI_assert, ParticleData::boid, copy_qt_qt(), copy_v3_v3(), cosf, cross_v3_v3v3(), dot_v3v3(), fabsf, ParticleData::foffset, ParticleSettings::from, ParticleData::fuv, get_angular_velocity_vector(), interp_qt_qtqt(), invert_qt_qt_normalized(), ParticleTexture::ivel, M_PI, madd_v3_v3fl(), mat3_to_quat(), mat3_to_quat_legacy(), mat4_to_quat(), mul_m4_v3(), mul_mat3_m4_v3(), mul_qt_qtqt(), mul_qt_v3(), mul_v3_fl(), mul_v3_v3fl(), negate_v3(), negate_v3_v3(), normalize_qt(), normalize_v3(), normalize_v3_v3(), ParticleSettings::normfac, ParticleData::num, ParticleData::num_dmcache, ParticleSimulationData::ob, OB_POSX, OB_POSZ, ParticleSettings::ob_vel, ParticleSettings::obfac, PAMAP_IVEL, ParticleSystem::part, PART_AVE_RAND, PART_PHYS_BOIDS, PART_ROT_GLOB_X, PART_ROT_GLOB_Y, PART_ROT_GLOB_Z, PART_ROT_NOR, PART_ROT_NOR_TAN, PART_ROT_OB_X, PART_ROT_OB_Y, PART_ROT_OB_Z, PART_ROT_VEL, ParticleSettings::partfac, ParticleSystem::particles, ParticleSettings::phasefac, ParticleSettings::phystype, ParticleData::prev_state, project_v3_v3v3(), ParticleSimulationData::psmd, ParticleSimulationData::psys, psys_frand(), psys_get_birth_coords(), psys_get_texture(), psys_particle_on_emitter(), psys_particle_value_from_verts(), ParticleSettings::randfac, ParticleSettings::randphasefac, ParticleSettings::randrotfac, rot, ParticleSettings::rotmode, sinf, ParticleData::state, state, sub_v3_v3(), sub_v3_v3v3(), ParticleSettings::tanfac, ParticleSettings::tanphase, unit_qt(), vec_to_quat(), ParticleKey::vel, and zero_v3().

Referenced by explodeMesh(), psys_get_birth_coords(), psys_unique_name(), and reset_particle().

◆ psys_get_child_number()

int psys_get_child_number ( Scene * scene,
ParticleSystem * psys,
const bool use_render_params )

Definition at line 277 of file particle_system.cc.

References ParticleSettings::child_percent, ParticleSettings::child_render_percent, ParticleSettings::childtype, get_render_child_particle_number(), ParticleSystem::part, psys_get_child_number(), and Scene::r.

Referenced by distribute_simple_children(), psys_get_child_number(), and psys_get_tot_child().

◆ psys_get_current_display_percentage()

float psys_get_current_display_percentage ( ParticleSystem * psys,
const bool use_render_params )

Definition at line 92 of file particle_system.cc.

References ParticleSettings::child_percent, ParticleSettings::childtype, ParticleSettings::disp, PointCache::flag, ParticleSystem::part, particles_are_dynamic(), ParticleSystem::pointcache, psys_get_current_display_percentage(), and PTCACHE_BAKING.

Referenced by BKE_psys_collision_neartest_cb(), cached_step(), hair_step(), particle_system_update(), psys_get_current_display_percentage(), and system_step().

◆ psys_get_pointcache_start_end()

void psys_get_pointcache_start_end ( Scene * scene,
ParticleSystem * psys,
int * sfra,
int * efra )

Definition at line 1294 of file particle_system.cc.

References RenderData::efra, ParticleSettings::end, ParticleSettings::lifetime, max_ii(), min_ii(), ParticleSystem::part, RenderData::pefra, psys_get_pointcache_start_end(), Scene::r, and ParticleSettings::sta.

Referenced by BKE_ptcache_bake(), psys_get_pointcache_start_end(), psys_unique_name(), and system_step().

◆ psys_get_target_system()

ParticleSystem * psys_get_target_system ( Object * ob,
ParticleTarget * pt )

Definition at line 1144 of file particle_system.cc.

References BLI_findlink(), ELEM, ParticleTarget::flag, ParticleTarget::ob, Object::particlesystem, ParticleTarget::psys, psys_get_target_system(), and PTARGET_VALID.

Referenced by dynamics_step(), psys_count_keyed_targets(), psys_get_target_system(), psys_sph_init(), psys_unique_name(), rule_avoid_collision(), rule_fight(), and rule_separate().

◆ psys_get_tot_child()

int psys_get_tot_child ( Scene * scene,
ParticleSystem * psys,
const bool use_render_params )

Definition at line 295 of file particle_system.cc.

References psys_get_child_number(), psys_get_tot_child(), and ParticleSystem::totpart.

Referenced by distribute_invalid(), distribute_simple_children(), psys_get_tot_child(), psys_thread_context_init_distribute(), psys_update_path_cache(), and update_children().

◆ psys_hair_use_simulation()

bool psys_hair_use_simulation ( ParticleData * pa,
float max_length )
static

Definition at line 3269 of file particle_system.cc.

References HairKey::co, ParticleData::hair, len_v3v3(), length(), psys_hair_use_simulation(), and ParticleData::totkey.

Referenced by hair_create_input_mesh(), and psys_hair_use_simulation().

◆ psys_make_temp_pointcache()

void psys_make_temp_pointcache ( Object * ob,
ParticleSystem * psys )

Definition at line 1276 of file particle_system.cc.

References BKE_ptcache_disk_to_mem(), BKE_ptcache_id_from_particles(), BLI_listbase_is_empty(), PointCache::flag, PointCache::mem_cache, ParticleSystem::pointcache, psys_make_temp_pointcache(), and PTCACHE_DISK_CACHE.

Referenced by psys_make_temp_pointcache(), and psys_unique_name().

◆ psys_prepare_physics()

void psys_prepare_physics ( ParticleSimulationData * sim)
static

Definition at line 4720 of file particle_system.cc.

References BKE_ptcache_id_clear(), BKE_ptcache_id_from_particles(), BLI_assert, ParticleSettings::boids, ELEM, ParticleSystem::flag, ParticleSettings::fluid, free_keyed_keys(), ParticleSimulationData::ob, ParticleSystem::part, PART_PHYS_BOIDS, PART_PHYS_FLUID, PART_PHYS_KEYED, PART_PHYS_NO, ParticleSettings::phystype, ParticleSimulationData::psys, psys_check_boid_data(), PSYS_KEYED, psys_prepare_physics(), and PTCACHE_CLEAR_ALL.

Referenced by particle_system_update(), and psys_prepare_physics().

◆ psys_reset()

void psys_reset ( ParticleSystem * psys,
int mode )

Definition at line 119 of file particle_system.cc.

References ParticleSystem::alloc_fluidsprings, BKE_ptcache_invalidate(), ParticleSystem::child, ParticleSystem::edit, ELEM, ParticleSystem::flag, ParticleSystem::fluid_springs, ParticleSystem::free_edit, LOOP_PARTICLES, MEM_SAFE_FREE, PARS_NO_DISP, PARTICLE_P, ParticleSystem::pointcache, PSYS_EDITED, psys_free_particles(), psys_free_path_cache(), PSYS_HAIR_DONE, PSYS_KEYED, psys_reset(), PSYS_RESET_ALL, PSYS_RESET_CACHE_MISS, PSYS_RESET_DEPSGRAPH, ParticleSystem::tot_fluidsprings, tot_particles(), ParticleSystem::totchild, ParticleSystem::totkeyed, and ParticleSystem::totpart.

Referenced by BKE_ptcache_id_reset(), clear_edited_exec(), object_copy_particle_system(), particle_system_update(), psys_changed_type(), psys_reset(), and system_step().

◆ psys_sph_density()

void psys_sph_density ( struct BVHTree * tree,
struct SPHData * data,
float co[3],
float vars[2] )

Sample the density field at a point in space.

Definition at line 2165 of file particle_system.cc.

References SPHRangeData::data, SPHData::density_cb, SPHFluidSettings::flag, ParticleSettings::fluid, SPHRangeData::h, SPHData::hfac, SPHData::mass, SPHRangeData::mass, ParticleSystem::part, SPHData::psys, psys_sph_density(), SPHFluidSettings::radius, ParticleSettings::size, sph_evaluate_func(), and SPH_FAC_RADIUS.

Referenced by psys_sph_density(), and psys_unique_name().

◆ psys_sph_finalize()

void psys_sph_finalize ( SPHData * sphdata)

Definition at line 2160 of file particle_system.cc.

References psys_sph_finalize(), and psys_sph_flush_springs().

Referenced by dynamics_step(), psys_sph_finalize(), and psys_unique_name().

◆ psys_sph_flush_springs()

void psys_sph_flush_springs ( SPHData * sphdata)
static

Definition at line 2150 of file particle_system.cc.

References BLI_buffer_at, BLI_buffer_field_free, BLI_Buffer::count, i, SPHData::new_springs, SPHData::psys, psys_sph_flush_springs(), and sph_spring_add().

Referenced by psys_sph_finalize(), and psys_sph_flush_springs().

◆ psys_sph_init()

void psys_sph_init ( ParticleSimulationData * sim,
SPHData * sphdata )

Definition at line 2109 of file particle_system.cc.

References BLI_buffer_field_init, SPHData::density_cb, SPHData::eh, ListBase::first, ParticleSettings::fluid, SPHData::force_cb, PhysicsSettings::gravity, SPHData::gravity, SPHData::hfac, i, SPHData::mass, SPHData::new_springs, ParticleTarget::next, ParticleSimulationData::ob, SPHData::pa, ParticleSystem::part, Scene::physics_settings, ParticleSimulationData::psys, SPHData::psys, psys_get_target_system(), psys_sph_init(), psys_uses_gravity(), ParticleSimulationData::scene, SPHFluidSettings::solver, sph_density_accum_cb(), sph_force_cb(), SPH_SOLVER_DDR, sph_springhash_build(), sphclassical_density_accum_cb(), sphclassical_force_cb(), and ParticleSystem::targets.

Referenced by dynamics_step(), psys_sph_init(), and psys_unique_name().

◆ psys_tasks_create()

blender::Vector< ParticleTask > psys_tasks_create ( ParticleThreadContext * ctx,
int startpart,
int endpart )

Definition at line 445 of file particle_system.cc.

References blender::Vector< T, InlineBufferCapacity, Allocator >::begin(), BLI_assert, BLI_system_thread_count(), blender::Vector< T, InlineBufferCapacity, Allocator >::end(), i, min_ii(), and psys_tasks_create().

Referenced by distribute_particles_on_dm(), psys_cache_child_paths(), psys_tasks_create(), and psys_unique_name().

◆ psys_tasks_free()

void psys_tasks_free ( blender::Vector< ParticleTask > & tasks)

Definition at line 471 of file particle_system.cc.

References BLI_rng_free(), blender::Vector< T, InlineBufferCapacity, Allocator >::clear(), and psys_tasks_free().

Referenced by distribute_particles_on_dm(), psys_cache_child_paths(), psys_tasks_free(), and psys_unique_name().

◆ psys_thread_context_free()

void psys_thread_context_free ( ParticleThreadContext * ctx)

Definition at line 486 of file particle_system.cc.

References BKE_curvemapping_free(), ParticleThreadContext::clumpcurve, ParticleThreadContext::index, ParticleThreadContext::jit, ParticleThreadContext::jitoff, MEM_freeN(), psys_sim_data_free(), psys_thread_context_free(), ParticleThreadContext::roughcurve, ParticleThreadContext::seams, ParticleThreadContext::sim, ParticleThreadContext::tree, ParticleThreadContext::twistcurve, ParticleThreadContext::vg_clump, ParticleThreadContext::vg_kink, ParticleThreadContext::vg_length, ParticleThreadContext::vg_rough1, ParticleThreadContext::vg_rough2, ParticleThreadContext::vg_roughe, ParticleThreadContext::vg_twist, and ParticleThreadContext::weight.

Referenced by distribute_particles_on_dm(), psys_cache_child_paths(), psys_thread_context_free(), and psys_unique_name().

◆ psys_thread_context_init()

void psys_thread_context_init ( struct ParticleThreadContext * ctx,
struct ParticleSimulationData * sim )

Threaded child particle distribution and path caching.

Definition at line 437 of file particle_system.cc.

References BKE_object_material_get(), ParticleThreadContext::ma, ParticleThreadContext::mesh, ParticleSystemModifierData::mesh_final, ParticleSimulationData::ob, ParticleSettings::omat, ParticleSystem::part, ParticleSimulationData::psmd, ParticleSimulationData::psys, psys_thread_context_init(), and ParticleThreadContext::sim.

Referenced by psys_thread_context_init(), psys_thread_context_init_distribute(), psys_thread_context_init_path(), and psys_unique_name().

◆ psys_unique_name()

void psys_unique_name ( Object * object,
ParticleSystem * psys,
const char * defname )

Definition at line 165 of file particle_system.cc.

References BLI_uniquename(), ParticleSystem::name, offsetof, Object::particlesystem, and psys_unique_name().

◆ psys_update_effectors()

void psys_update_effectors ( ParticleSimulationData * sim)
static

Definition at line 1387 of file particle_system.cc.

References BKE_effectors_create(), BKE_effectors_free(), ParticleSimulationData::depsgraph, ParticleSettings::effector_weights, ParticleSystem::effectors, ParticleSettings::flag, ParticleSimulationData::ob, ParticleSystem::part, PART_ROT_DYN, precalc_guides(), ParticleSimulationData::psys, and psys_update_effectors().

Referenced by cached_step(), dynamics_step(), hair_step(), and psys_update_effectors().

◆ psys_update_particle_bvhtree()

void psys_update_particle_bvhtree ( ParticleSystem * psys,
float cfra )
static

Definition at line 1314 of file particle_system.cc.

References BLI_bvhtree_free(), BLI_bvhtree_insert(), BLI_bvhtree_new(), BLI_rw_mutex_lock(), BLI_rw_mutex_unlock(), BLI_task_isolate(), ParticleSystem::bvhtree, bvhtree_balance_isolated(), ParticleSystem::bvhtree_frame, LOOP_SHOWN_PARTICLES, PARS_ALIVE, PARTICLE_P, psys_bvhtree_rwlock, psys_update_particle_bvhtree(), THREAD_LOCK_READ, and THREAD_LOCK_WRITE.

Referenced by dynamics_step(), and psys_update_particle_bvhtree().

◆ psys_update_particle_tree()

void psys_update_particle_tree ( ParticleSystem * psys,
float cfra )

Definition at line 1356 of file particle_system.cc.

References LOOP_SHOWN_PARTICLES, PARS_ALIVE, PARTICLE_P, psys_update_particle_tree(), ParticleSystem::tree, and ParticleSystem::tree_frame.

Referenced by dynamics_step(), precalculate_effector(), psys_unique_name(), and psys_update_particle_tree().

◆ psys_update_path_cache()

void psys_update_path_cache ( ParticleSimulationData * sim,
float cfra,
const bool use_render_params )
static

Check if path cache or children need updating and do it if needed.

Definition at line 3176 of file particle_system.cc.

References ParticleSettings::childtype, DAG_EVAL_RENDER, DEG_get_mode(), ParticleSimulationData::depsgraph, distribute_particles(), ParticleSettings::draw_as, ELEM, ParticleEditSettings::flag, ParticleSystem::flag, PointCache::flag, ID_RECALC_PSYS_CHILD, ID_RECALC_PSYS_RESET, Object::mode, ParticleSimulationData::ob, OB_MODE_WEIGHT_PAINT, ParticleSettings::parents, ParticleSystem::part, PART_CHILD_FACES, PART_DRAW_GR, PART_DRAW_OB, PART_DRAW_PATH, PART_DRAW_REND, PART_FROM_CHILD, PART_HAIR, ToolSettings::particle, ParticleSystem::pathcache, PE_DRAW_PART, ParticleSystem::pointcache, ParticleSimulationData::psys, psys_cache_child_paths(), psys_cache_paths(), psys_find_parents(), psys_free_children(), psys_free_path_cache(), psys_get_tot_child(), PSYS_HAIR_DONE, PSYS_HAIR_DYNAMICS, psys_in_edit_mode(), PSYS_KEYED, psys_update_path_cache(), PSYS_VG_DENSITY, PTCACHE_BAKED, PTCACHE_BAKING, realloc_particles(), ParticleSystem::recalc, ParticleSettings::ren_as, ParticleSimulationData::scene, Scene::toolsettings, ParticleSystem::totchild, ParticleSystem::totpart, ParticleSettings::type, and ParticleSystem::vgroup.

Referenced by hair_step(), particle_system_update(), psys_update_path_cache(), and system_step().

◆ realloc_particles()

void realloc_particles ( ParticleSimulationData * sim,
int new_totpart )
static

Definition at line 175 of file particle_system.cc.

References ParticleData::boid, ParticleSystem::child, ParticleSettings::distr, ParticleSystem::edit, ParticleSystem::free_edit, ParticleSettings::from, ParticleSettings::grid_res, ParticleData::keys, LOOP_PARTICLES, MEM_calloc_arrayN(), MEM_freeN(), ParticleSystem::part, PART_DISTR_GRID, PART_FROM_VERT, PART_PHYS_BOIDS, PARTICLE_P, ParticleSystem::particles, ParticleSettings::phystype, ParticleSimulationData::psys, psys_free_pdd(), realloc_particles(), ParticleSystem::totchild, ParticleSettings::totpart, and ParticleSystem::totpart.

Referenced by emit_particles(), particles_fluid_step(), psys_update_path_cache(), and realloc_particles().

◆ reset_all_particles()

void reset_all_particles ( ParticleSimulationData * sim,
float dtime,
float cfra,
int from )
static

Definition at line 1130 of file particle_system.cc.

References ParticleSystem::particles, ParticleSimulationData::psys, reset_all_particles(), reset_particle(), and ParticleSystem::totpart.

Referenced by reset_all_particles(), and system_step().

◆ reset_particle()

void reset_particle ( struct ParticleSimulationData * sim,
struct ParticleData * pa,
float dtime,
float cfra )

Sets particle to the emitter surface with initial velocity & rotation.

Definition at line 1047 of file particle_system.cc.

References BoidData::acc, ParticleData::alive, ParticleData::boid, ParticleSettings::boids, ParticleSystem::cfra, BoidParticle::data, ParticleSimulationData::depsgraph, ParticleData::dietime, eBoidMode_InAir, evaluate_emitter_anim(), ListBase::first, ParticleSystem::flag, PhysicsSettings::flag, PointCache::flag, BoidParticle::gravity, PhysicsSettings::gravity, BoidData::health, BoidSettings::health, init_particle_texture(), ParticleTexture::life, ParticleData::lifetime, ParticleSettings::lifetime, PointCache::mem_cache, BoidData::mode, ParticleSimulationData::ob, PAMAP_LIFE, PARS_ALIVE, PARS_DEAD, PARS_UNBORN, ParticleSystem::part, PART_HAIR, PART_PHYS_BOIDS, ParticleSystem::particles, PHYS_GLOBAL_GRAVITY, Scene::physics_settings, ParticleSettings::phystype, ParticleSystem::pointcache, ParticleSimulationData::psys, psys_frand(), psys_get_birth_coords(), psys_get_dietime_from_cache(), psys_get_texture(), PSYS_OB_ANIM_RESTORE, PTCACHE_BAKED, ParticleSettings::randlife, reset_particle(), ParticleSimulationData::scene, ParticleData::state, BoidData::state_id, BoidSettings::states, ParticleData::time, ParticleKey::time, and ParticleSettings::type.

Referenced by BKE_psys_collision_neartest_cb(), brush_add(), cached_step(), dynamics_step(), particle_system_update(), reset_all_particles(), and reset_particle().

◆ save_hair()

void save_hair ( ParticleSimulationData * sim,
float  )
static

Definition at line 3559 of file particle_system.cc.

References HairKey::co, ParticleKey::co, copy_v3_v3(), ParticleData::hair, ParticleSettings::hair_step, invert_m4_m4(), LOOP_PARTICLES, MEM_calloc_arrayN(), ParticleSystemModifierData::mesh_final, mul_m4_v3(), ParticleSimulationData::ob, ParticleSystem::part, PARTICLE_P, ParticleSimulationData::psmd, ParticleSimulationData::psys, psys_sim_data_free(), psys_sim_data_init(), psys_vec_rot_to_face(), Object::runtime, save_hair(), ParticleData::state, sub_v3_v3(), HairKey::time, ParticleKey::time, ParticleData::totkey, ParticleSystem::totpart, HairKey::weight, and zero_v3().

Referenced by particle_system_update(), and save_hair().

◆ set_keyed_keys()

void set_keyed_keys ( ParticleSimulationData * sim)
static

Definition at line 1193 of file particle_system.cc.

References BLI_findlink(), copy_particle_key(), ParticleSimulationData::depsgraph, ParticleTarget::duration, ListBase::first, ParticleSystem::flag, ParticleTarget::flag, free_keyed_keys(), LOOP_PARTICLES, MEM_calloc_arrayN(), ParticleTarget::next, ParticleSimulationData::ob, ParticleTarget::ob, PARTICLE_P, ParticleSystem::particles, Object::particlesystem, ParticleSimulationData::psys, ParticleTarget::psys, psys_get_particle_state(), PSYS_KEYED, PSYS_KEYED_TIMING, PTARGET_VALID, ParticleSimulationData::scene, set_keyed_keys(), ParticleSystem::targets, ParticleKey::time, ParticleTarget::time, ParticleData::totkey, ParticleSystem::totkeyed, and ParticleSystem::totpart.

Referenced by particle_system_update(), and set_keyed_keys().

◆ sph_density_accum_cb()

void sph_density_accum_cb ( void * userdata,
int index,
const float co[3],
float squared_dist )
static

Definition at line 1710 of file particle_system.cc.

References SPHRangeData::data, SPHRangeData::h, SPHNeighbor::index, SPHRangeData::massfac, SPHRangeData::neighbors, SPHRangeData::npsys, SPHRangeData::pa, ParticleSystem::particles, SPHNeighbor::psys, ParticleData::size, sph_density_accum_cb(), SPH_NEIGHBORS, sqrtf, SPHRangeData::tot_neighbors, UNUSED_VARS, and SPHRangeData::use_size.

Referenced by psys_sph_init(), sph_density_accum_cb(), and sph_force_cb().

◆ sph_evaluate_func()

void sph_evaluate_func ( BVHTree * tree,
ParticleSystem ** psys,
const float co[3],
SPHRangeData * pfr,
float interaction_radius,
BVHTree_RangeQuery callback )
static

Definition at line 1682 of file particle_system.cc.

References BLI_bvhtree_range_query(), BLI_rw_mutex_lock(), BLI_rw_mutex_unlock(), ParticleSettings::flag, i, ParticleSettings::mass, SPHRangeData::mass, SPHRangeData::massfac, SPHRangeData::npsys, ParticleSystem::part, PART_SIZEMASS, psys_bvhtree_rwlock, sph_evaluate_func(), THREAD_LOCK_READ, SPHRangeData::tot_neighbors, and SPHRangeData::use_size.

Referenced by psys_sph_density(), sph_evaluate_func(), sph_force_cb(), sphclassical_calc_dens(), and sphclassical_force_cb().

◆ sph_force_cb()

void sph_force_cb ( void * sphdata_v,
ParticleKey * state,
float * force,
float *  )
static

Definition at line 1777 of file particle_system.cc.

References BLI_buffer_append, SPHFluidSettings::buoyancy, ParticleKey::co, copy_v3_v3(), data, SPHRangeData::data, ParticleSpring::delete_flag, dot_v3v3(), SPHData::eh, ParticleSettings::flag, SPHFluidSettings::flag, ParticleSettings::fluid, ParticleSystem::fluid_springs, SPHData::gravity, SPHRangeData::h, SPHData::hfac, i, SPHNeighbor::index, madd_v3_v3fl(), madd_v3_v3v3fl(), ParticleSettings::mass, SPHData::mass, SPHRangeData::mass, SPHRangeData::neighbors, SPHData::new_springs, normalize_v3(), SPHData::pa, SPHRangeData::pa, ParticleSystem::part, PART_SIZEMASS, PART_TIME_AUTOSF, ParticleSpring::particle_index, ParticleSystem::particles, SPHData::pass, ParticleData::prev_state, SPHData::psys, SPHNeighbor::psys, SPHFluidSettings::radius, SPHFluidSettings::rest_density, ParticleSpring::rest_length, SPHFluidSettings::rest_length, ParticleData::size, SPH_CURRENT_REST_LENGTH, sph_density_accum_cb(), sph_evaluate_func(), SPH_FAC_DENSITY, SPH_FAC_RADIUS, SPH_FAC_REPULSION, SPH_FAC_REST_LENGTH, SPH_FAC_VISCOSITY, sph_force_cb(), sph_particle_courant(), SPH_VISCOELASTIC_SPRINGS, SPHFluidSettings::spring_frames, SPHFluidSettings::spring_k, state, SPHFluidSettings::stiffness_k, SPHFluidSettings::stiffness_knear, sub_v3_v3v3(), ParticleData::time, ParticleKey::time, ParticleSettings::time_flag, SPHRangeData::tot_neighbors, ParticleKey::vel, SPHFluidSettings::viscosity_beta, and SPHFluidSettings::viscosity_omega.

Referenced by psys_sph_init(), and sph_force_cb().

◆ sph_integrate()

void sph_integrate ( ParticleSimulationData * sim,
ParticleData * pa,
float dfra,
SPHData * sphdata )
static

Definition at line 2186 of file particle_system.cc.

References copy_particle_key(), ParticleSettings::flag, SPHData::force_cb, integrate_particle(), ParticleSettings::mass, SPHData::mass, mul_v3_fl(), SPHData::pa, ParticleSystem::part, PART_SIZEMASS, SPHData::pass, ParticleData::prev_state, ParticleSimulationData::psys, psys_get_timestep(), ParticleData::size, sph_integrate(), ParticleData::state, sub_v3_v3v3(), and ParticleKey::vel.

Referenced by dynamics_step_sph_classical_integrate_task_cb_ex(), dynamics_step_sph_ddr_task_cb_ex(), and sph_integrate().

◆ sph_particle_courant()

void sph_particle_courant ( SPHData * sphdata,
SPHRangeData * pfr )
static

Definition at line 1751 of file particle_system.cc.

References add_v3_v3(), ParticleKey::co, copy_v3_v3(), SPHData::element_size, SPHData::flow, FLT_MAX, ParticleSettings::fluid, i, SPHNeighbor::index, len_v3(), mul_v3_v3fl(), SPHRangeData::neighbors, SPHRangeData::pa, ParticleSystem::part, ParticleSystem::particles, ParticleData::prev_state, SPHData::psys, SPHNeighbor::psys, SPHFluidSettings::radius, sph_particle_courant(), sub_v3_v3v3(), SPHRangeData::tot_neighbors, ParticleKey::vel, and zero_v3().

Referenced by sph_force_cb(), sph_particle_courant(), and sphclassical_force_cb().

◆ sph_spring_add()

ParticleSpring * sph_spring_add ( ParticleSystem * psys,
ParticleSpring * spring )
static

Definition at line 1559 of file particle_system.cc.

References ParticleSystem::alloc_fluidsprings, ParticleSystem::fluid_springs, MEM_calloc_arrayN(), MEM_reallocN, PSYS_FLUID_SPRINGS_INITIAL_SIZE, sph_spring_add(), and ParticleSystem::tot_fluidsprings.

Referenced by psys_sph_flush_springs(), and sph_spring_add().

◆ sph_spring_delete()

void sph_spring_delete ( ParticleSystem * psys,
int j )
static

Definition at line 1579 of file particle_system.cc.

References ParticleSystem::alloc_fluidsprings, ParticleSystem::fluid_springs, MEM_reallocN, PSYS_FLUID_SPRINGS_INITIAL_SIZE, sph_spring_delete(), and ParticleSystem::tot_fluidsprings.

Referenced by sph_spring_delete(), and sph_springs_modify().

◆ sph_springhash_build()

blender::Map< blender::OrderedEdge, int > sph_springhash_build ( ParticleSystem * psys)
static

Definition at line 1646 of file particle_system.cc.

References blender::Map< Key, Value, InlineBufferCapacity, ProbingStrategy, Hash, IsEqual, Slot, Allocator >::add(), ParticleSystem::fluid_springs, i, ParticleSpring::particle_index, blender::Map< Key, Value, InlineBufferCapacity, ProbingStrategy, Hash, IsEqual, Slot, Allocator >::reserve(), sph_springhash_build(), and ParticleSystem::tot_fluidsprings.

Referenced by psys_sph_init(), and sph_springhash_build().

◆ sph_springs_modify()

void sph_springs_modify ( ParticleSystem * psys,
float dtime )
static

Definition at line 1595 of file particle_system.cc.

References ParticleKey::co, ParticleSpring::delete_flag, SPHFluidSettings::flag, ParticleSettings::fluid, ParticleSystem::fluid_springs, i, normalize_v3(), ParticleSystem::part, ParticleSpring::particle_index, ParticleSystem::particles, SPHFluidSettings::plasticity_constant, ParticleData::prev_state, ParticleSpring::rest_length, ParticleData::size, sph_spring_delete(), sph_springs_modify(), SPH_VISCOELASTIC_SPRINGS, SPHFluidSettings::spring_k, sub_v3_v3v3(), ParticleSystem::tot_fluidsprings, and SPHFluidSettings::yield_ratio.

Referenced by dynamics_step(), and sph_springs_modify().

◆ sphclassical_calc_dens()

void sphclassical_calc_dens ( ParticleData * pa,
float ,
SPHData * sphdata )
static

Definition at line 2087 of file particle_system.cc.

References ParticleKey::co, data, SPHRangeData::data, SPHFluidSettings::flag, ParticleSettings::fluid, SPHRangeData::h, SPHData::hfac, SPHData::mass, SPHRangeData::mass, max_ff(), min_ff(), SPHRangeData::pa, ParticleSystem::part, SPHData::psys, SPHFluidSettings::radius, SPHFluidSettings::rest_density, ParticleSettings::size, sph_evaluate_func(), SPH_FAC_RADIUS, sphclassical_calc_dens(), sphclassical_density_accum_cb(), ParticleData::sphdensity, and ParticleData::state.

Referenced by dynamics_step_sph_classical_calc_density_task_cb_ex(), and sphclassical_calc_dens().

◆ sphclassical_density_accum_cb()

void sphclassical_density_accum_cb ( void * userdata,
int index,
const float co[3],
float  )
static

Definition at line 1912 of file particle_system.cc.

References ParticleKey::co, SPHRangeData::data, SPHRangeData::h, len_v3(), M_PI, ParticleSettings::mass, SPHRangeData::npsys, SPHRangeData::pa, ParticleSystem::part, ParticleSystem::particles, pow3f(), pow4f(), ParticleData::size, sphclassical_density_accum_cb(), ParticleData::sphdensity, ParticleData::state, sub_v3_v3v3(), and SPHRangeData::use_size.

Referenced by psys_sph_init(), sphclassical_calc_dens(), and sphclassical_density_accum_cb().

◆ sphclassical_force_cb()

void sphclassical_force_cb ( void * sphdata_v,
ParticleKey * state,
float * force,
float *  )
static

Definition at line 1976 of file particle_system.cc.

References SPHFluidSettings::buoyancy, ParticleKey::co, dot_v3v3(), ParticleSettings::flag, SPHFluidSettings::flag, ParticleSettings::fluid, SPHData::gravity, SPHRangeData::h, SPHData::hfac, i, SPHNeighbor::index, M_PI, madd_v3_v3fl(), madd_v3_v3v3fl(), SPHData::mass, SPHRangeData::neighbors, normalize_v3(), SPHData::pa, SPHRangeData::pa, ParticleSystem::part, PART_SIZEMASS, PART_TIME_AUTOSF, ParticleSystem::particles, SPHData::pass, pow2f(), pow3f(), pow4f(), pow7f(), ParticleData::prev_state, SPHData::psys, SPHNeighbor::psys, SPHFluidSettings::radius, SPHFluidSettings::rest_density, ParticleData::size, sph_evaluate_func(), SPH_FAC_DENSITY, SPH_FAC_RADIUS, sph_particle_courant(), sphclassical_force_cb(), sphclassical_neighbor_accum_cb(), ParticleData::sphdensity, state, SPHFluidSettings::stiffness_k, sub_v3_v3v3(), ParticleSettings::time_flag, SPHRangeData::tot_neighbors, ParticleKey::vel, and SPHFluidSettings::viscosity_omega.

Referenced by psys_sph_init(), and sphclassical_force_cb().

◆ sphclassical_neighbor_accum_cb()

void sphclassical_neighbor_accum_cb ( void * userdata,
int index,
const float co[3],
float  )
static

Definition at line 1948 of file particle_system.cc.

References ParticleKey::co, SPHRangeData::h, SPHNeighbor::index, len_v3(), SPHRangeData::neighbors, SPHRangeData::npsys, ParticleSystem::particles, SPHNeighbor::psys, SPH_NEIGHBORS, sphclassical_neighbor_accum_cb(), ParticleData::state, sub_v3_v3v3(), and SPHRangeData::tot_neighbors.

Referenced by sphclassical_force_cb(), and sphclassical_neighbor_accum_cb().

◆ sync_timestep()

float sync_timestep ( ParticleSystem * psys,
float t_frac )
static

Definition at line 3673 of file particle_system.cc.

References ParticleSystem::dt_frac, sync_timestep(), and TIMESTEP_EXPANSION_TOLERANCE.

Referenced by sync_timestep(), and system_step().

◆ system_step()

void system_step ( ParticleSimulationData * sim,
float cfra,
const bool use_render_params )
static

Calculates the next state for all particles of the system. In particles code most 'cfra - ending' are frames, 'time - ending' are 'cfra * timestep' (seconds).

  1. Emit particles
  2. Check cache (if used) and return if frame is cached
  3. Do dynamics
  4. Save to cache

Definition at line 4476 of file particle_system.cc.

References ParticleSystem::alloc_fluidsprings, BKE_ptcache_id_clear(), BKE_ptcache_id_from_particles(), BKE_ptcache_id_reset(), BKE_ptcache_id_time(), BKE_ptcache_invalidate(), BKE_ptcache_read(), BKE_ptcache_validate(), BKE_ptcache_write(), cached_step(), ParticleSystem::cfra, CLAMP, ParticleSimulationData::courant_num, distribute_particles(), ParticleSystem::dt_frac, dynamics_step(), ELEM, emit_particles(), PointCache::endframe, eParticleSystemFlag_Pars, ParticleData::flag, ParticleSystemModifierData::flag, PointCache::flag, ParticleSystem::fluid_springs, free_unexisting_particles(), ParticleSettings::from, get_base_time_step(), ID_RECALC_PSYS_RESET, initialize_all_particles(), PointCache::last_exact, LOOP_PARTICLES, MEM_SAFE_FREE, MIN_TIMESTEP, ParticleSimulationData::ob, PARS_NO_DISP, ParticleSystem::part, PART_HAIR, PART_TIME_AUTOSF, PARTICLE_P, ParticleSystem::pointcache, ParticleSimulationData::psmd, ParticleSimulationData::psys, psys_clear_temp_pointcache(), psys_frand(), psys_get_current_display_percentage(), psys_get_pointcache_start_end(), psys_reset(), PSYS_RESET_CACHE_MISS, psys_sim_data_free(), psys_update_path_cache(), PTCACHE_BAKED, PTCACHE_BAKING, PTCACHE_CLEAR_AFTER, PTCACHE_OUTDATED, PTCACHE_READ_EXACT, PTCACHE_READ_INTERPOLATED, PTCACHE_READ_OLD, PTCACHE_REDO_NEEDED, PTCACHE_RESET_OUTDATED, ParticleSystem::recalc, reset_all_particles(), ParticleSimulationData::scene, PointCache::simframe, ParticleSettings::sta, PointCache::startframe, sync_timestep(), system_step(), ParticleSettings::time_flag, ParticleSystem::tot_fluidsprings, ParticleSystem::totpart, ParticleSettings::type, update_children(), and update_timestep().

Referenced by particle_system_update(), and system_step().

◆ tot_particles()

int tot_particles ( ParticleSystem * psys,
PTCacheID * pid )
static

Definition at line 107 of file particle_system.cc.

References PTCacheID::cache, ParticleSettings::distr, PointCache::flag, ParticleSettings::from, ParticleSettings::grid_res, ParticleSystem::part, PART_DISTR_GRID, PART_FROM_VERT, ParticleSystem::pointcache, PTCACHE_EXTERNAL, tot_particles(), ParticleSettings::totpart, PointCache::totpoint, and ParticleSystem::totunexist.

Referenced by emit_particles(), psys_reset(), and tot_particles().

◆ update_children()

void update_children ( ParticleSimulationData * sim,
const bool use_render_params )
static

Definition at line 4083 of file particle_system.cc.

References ParticleSettings::childtype, distribute_particles(), ParticleSystem::flag, ParticleSystem::part, PART_FROM_CHILD, PART_HAIR, ParticleSimulationData::psys, psys_free_children(), psys_get_tot_child(), PSYS_HAIR_DONE, ParticleSimulationData::scene, ParticleSystem::totchild, ParticleSettings::type, and update_children().

Referenced by system_step(), and update_children().

◆ update_courant_num()

void update_courant_num ( ParticleSimulationData * sim,
ParticleData * pa,
float dtime,
SPHData * sphdata,
SpinLock * spin )
static

Calculate the speed of the particle relative to the local scale of the simulation. This should be called once per particle during a simulation step, after the velocity has been updated. element_size defines the scale of the simulation, and is typically the distance to neighboring particles.

Definition at line 3626 of file particle_system.cc.

References BLI_spin_lock(), BLI_spin_unlock(), ParticleSimulationData::courant_num, SPHData::element_size, SPHData::flow, len_v3(), ParticleData::prev_state, sub_v3_v3v3(), update_courant_num(), and ParticleKey::vel.

Referenced by dynamics_step_sph_classical_integrate_task_cb_ex(), dynamics_step_sph_ddr_task_cb_ex(), and update_courant_num().

◆ update_timestep()

void update_timestep ( ParticleSystem * psys,
ParticleSimulationData * sim )
static

Definition at line 3645 of file particle_system.cc.

References ParticleSimulationData::courant_num, ParticleSettings::courant_target, ParticleSystem::dt_frac, get_base_time_step(), interpf(), MIN_TIMESTEP, ParticleSystem::part, TIMESTEP_EXPANSION_FACTOR, and update_timestep().

Referenced by system_step(), and update_timestep().

Variable Documentation

◆ MIN_TIMESTEP

const float MIN_TIMESTEP = 1.0f / 101.0f
static

Code for an adaptive time step based on the Courant-Friedrichs-Lewy condition.

Definition at line 3612 of file particle_system.cc.

Referenced by system_step(), and update_timestep().

◆ psys_bvhtree_rwlock

ThreadRWMutex psys_bvhtree_rwlock = BLI_RWLOCK_INITIALIZER
static

Definition at line 73 of file particle_system.cc.

Referenced by psys_update_particle_bvhtree(), and sph_evaluate_func().

◆ TIMESTEP_EXPANSION_FACTOR

const float TIMESTEP_EXPANSION_FACTOR = 0.1f
static

Tolerance of 1.5 means the last sub-frame neither favors growing nor shrinking (e.g if it were 1.3, the last sub-frame would tend to be too small).

Definition at line 3617 of file particle_system.cc.

Referenced by update_timestep().

◆ TIMESTEP_EXPANSION_TOLERANCE

const float TIMESTEP_EXPANSION_TOLERANCE = 1.5f
static

Definition at line 3618 of file particle_system.cc.

Referenced by sync_timestep().

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