diff options
Diffstat (limited to 'source/blender/physics/intern/implicit.h')
| -rw-r--r-- | source/blender/physics/intern/implicit.h | 169 |
1 files changed, 126 insertions, 43 deletions
diff --git a/source/blender/physics/intern/implicit.h b/source/blender/physics/intern/implicit.h index eac59a3edbb..a88a5785fee 100644 --- a/source/blender/physics/intern/implicit.h +++ b/source/blender/physics/intern/implicit.h @@ -54,24 +54,30 @@ extern "C" { struct Implicit_Data; typedef struct ImplicitSolverResult { - int status; + int status; - int iterations; - float error; + int iterations; + float error; } ImplicitSolverResult; BLI_INLINE void implicit_print_matrix_elem(float v) { - printf("%-8.3f", v); + printf("%-8.3f", v); } void BPH_mass_spring_set_vertex_mass(struct Implicit_Data *data, int index, float mass); void BPH_mass_spring_set_rest_transform(struct Implicit_Data *data, int index, float rot[3][3]); -void BPH_mass_spring_set_motion_state(struct Implicit_Data *data, int index, const float x[3], const float v[3]); +void BPH_mass_spring_set_motion_state(struct Implicit_Data *data, + int index, + const float x[3], + const float v[3]); void BPH_mass_spring_set_position(struct Implicit_Data *data, int index, const float x[3]); void BPH_mass_spring_set_velocity(struct Implicit_Data *data, int index, const float v[3]); -void BPH_mass_spring_get_motion_state(struct Implicit_Data *data, int index, float x[3], float v[3]); +void BPH_mass_spring_get_motion_state(struct Implicit_Data *data, + int index, + float x[3], + float v[3]); void BPH_mass_spring_get_position(struct Implicit_Data *data, int index, float x[3]); /* access to modified motion state during solver step */ @@ -81,46 +87,100 @@ void BPH_mass_spring_get_new_velocity(struct Implicit_Data *data, int index, flo void BPH_mass_spring_set_new_velocity(struct Implicit_Data *data, int index, const float v[3]); void BPH_mass_spring_clear_constraints(struct Implicit_Data *data); -void BPH_mass_spring_add_constraint_ndof0(struct Implicit_Data *data, int index, const float dV[3]); -void BPH_mass_spring_add_constraint_ndof1(struct Implicit_Data *data, int index, const float c1[3], const float c2[3], const float dV[3]); -void BPH_mass_spring_add_constraint_ndof2(struct Implicit_Data *data, int index, const float c1[3], const float dV[3]); - -bool BPH_mass_spring_solve_velocities(struct Implicit_Data *data, float dt, struct ImplicitSolverResult *result); +void BPH_mass_spring_add_constraint_ndof0(struct Implicit_Data *data, + int index, + const float dV[3]); +void BPH_mass_spring_add_constraint_ndof1(struct Implicit_Data *data, + int index, + const float c1[3], + const float c2[3], + const float dV[3]); +void BPH_mass_spring_add_constraint_ndof2(struct Implicit_Data *data, + int index, + const float c1[3], + const float dV[3]); + +bool BPH_mass_spring_solve_velocities(struct Implicit_Data *data, + float dt, + struct ImplicitSolverResult *result); bool BPH_mass_spring_solve_positions(struct Implicit_Data *data, float dt); void BPH_mass_spring_apply_result(struct Implicit_Data *data); /* Clear the force vector at the beginning of the time step */ void BPH_mass_spring_clear_forces(struct Implicit_Data *data); /* Fictitious forces introduced by moving coordinate systems */ -void BPH_mass_spring_force_reference_frame(struct Implicit_Data *data, int index, const float acceleration[3], const float omega[3], const float domega_dt[3], float mass); +void BPH_mass_spring_force_reference_frame(struct Implicit_Data *data, + int index, + const float acceleration[3], + const float omega[3], + const float domega_dt[3], + float mass); /* Simple uniform gravity force */ -void BPH_mass_spring_force_gravity(struct Implicit_Data *data, int index, float mass, const float g[3]); +void BPH_mass_spring_force_gravity(struct Implicit_Data *data, + int index, + float mass, + const float g[3]); /* Global drag force (velocity damping) */ void BPH_mass_spring_force_drag(struct Implicit_Data *data, float drag); /* Custom external force */ -void BPH_mass_spring_force_extern(struct Implicit_Data *data, int i, const float f[3], float dfdx[3][3], float dfdv[3][3]); +void BPH_mass_spring_force_extern( + struct Implicit_Data *data, int i, const float f[3], float dfdx[3][3], float dfdv[3][3]); /* Wind force, acting on a face */ -void BPH_mass_spring_force_face_wind(struct Implicit_Data *data, int v1, int v2, int v3, const float(*winvec)[3]); +void BPH_mass_spring_force_face_wind( + struct Implicit_Data *data, int v1, int v2, int v3, const float (*winvec)[3]); /* Wind force, acting on an edge */ -void BPH_mass_spring_force_edge_wind(struct Implicit_Data *data, int v1, int v2, float radius1, float radius2, const float(*winvec)[3]); +void BPH_mass_spring_force_edge_wind(struct Implicit_Data *data, + int v1, + int v2, + float radius1, + float radius2, + const float (*winvec)[3]); /* Wind force, acting on a vertex */ -void BPH_mass_spring_force_vertex_wind(struct Implicit_Data *data, int v, float radius, const float(*winvec)[3]); +void BPH_mass_spring_force_vertex_wind(struct Implicit_Data *data, + int v, + float radius, + const float (*winvec)[3]); /* Linear spring force between two points */ -bool BPH_mass_spring_force_spring_linear(struct Implicit_Data *data, int i, int j, float restlen, - float stiffness_tension, float damping_tension, - float stiffness_compression, float damping_compression, - bool resist_compress, bool new_compress, float clamp_force); +bool BPH_mass_spring_force_spring_linear(struct Implicit_Data *data, + int i, + int j, + float restlen, + float stiffness_tension, + float damping_tension, + float stiffness_compression, + float damping_compression, + bool resist_compress, + bool new_compress, + float clamp_force); /* Angular spring force between two polygons */ -bool BPH_mass_spring_force_spring_angular(struct Implicit_Data *data, int i, int j, int *i_a, int *i_b, int len_a, int len_b, - float restang, float stiffness, float damping); +bool BPH_mass_spring_force_spring_angular(struct Implicit_Data *data, + int i, + int j, + int *i_a, + int *i_b, + int len_a, + int len_b, + float restang, + float stiffness, + float damping); /* Bending force, forming a triangle at the base of two structural springs */ -bool BPH_mass_spring_force_spring_bending(struct Implicit_Data *data, int i, int j, float restlen, float kb, float cb); +bool BPH_mass_spring_force_spring_bending( + struct Implicit_Data *data, int i, int j, float restlen, float kb, float cb); /* Angular bending force based on local target vectors */ -bool BPH_mass_spring_force_spring_bending_hair(struct Implicit_Data *data, int i, int j, int k, - const float target[3], float stiffness, float damping); +bool BPH_mass_spring_force_spring_bending_hair(struct Implicit_Data *data, + int i, + int j, + int k, + const float target[3], + float stiffness, + float damping); /* Global goal spring */ -bool BPH_mass_spring_force_spring_goal(struct Implicit_Data *data, int i, const float goal_x[3], const float goal_v[3], - float stiffness, float damping); +bool BPH_mass_spring_force_spring_goal(struct Implicit_Data *data, + int i, + const float goal_x[3], + const float goal_v[3], + float stiffness, + float damping); /* ======== Hair Volumetric Forces ======== */ @@ -130,44 +190,67 @@ struct VoxelData; #define MAX_HAIR_GRID_RES 256 -struct HairGrid *BPH_hair_volume_create_vertex_grid(float cellsize, const float gmin[3], const float gmax[3]); +struct HairGrid *BPH_hair_volume_create_vertex_grid(float cellsize, + const float gmin[3], + const float gmax[3]); void BPH_hair_volume_free_vertex_grid(struct HairGrid *grid); -void BPH_hair_volume_grid_geometry(struct HairGrid *grid, float *cellsize, int res[3], float gmin[3], float gmax[3]); +void BPH_hair_volume_grid_geometry( + struct HairGrid *grid, float *cellsize, int res[3], float gmin[3], float gmax[3]); void BPH_hair_volume_grid_clear(struct HairGrid *grid); void BPH_hair_volume_add_vertex(struct HairGrid *grid, const float x[3], const float v[3]); void BPH_hair_volume_add_segment(struct HairGrid *grid, - const float x1[3], const float v1[3], const float x2[3], const float v2[3], - const float x3[3], const float v3[3], const float x4[3], const float v4[3], - const float dir1[3], const float dir2[3], const float dir3[3]); + const float x1[3], + const float v1[3], + const float x2[3], + const float v2[3], + const float x3[3], + const float v3[3], + const float x4[3], + const float v4[3], + const float dir1[3], + const float dir2[3], + const float dir3[3]); void BPH_hair_volume_normalize_vertex_grid(struct HairGrid *grid); -bool BPH_hair_volume_solve_divergence(struct HairGrid *grid, float dt, float target_density, float target_strength); +bool BPH_hair_volume_solve_divergence(struct HairGrid *grid, + float dt, + float target_density, + float target_strength); #if 0 /* XXX weighting is incorrect, disabled for now */ void BPH_hair_volume_vertex_grid_filter_box(struct HairVertexGrid *grid, int kernel_size); #endif -void BPH_hair_volume_grid_interpolate(struct HairGrid *grid, const float x[3], - float *density, float velocity[3], float velocity_smooth[3], - float density_gradient[3], float velocity_gradient[3][3]); +void BPH_hair_volume_grid_interpolate(struct HairGrid *grid, + const float x[3], + float *density, + float velocity[3], + float velocity_smooth[3], + float density_gradient[3], + float velocity_gradient[3][3]); /* Effect of fluid simulation grid on velocities. * fluid_factor controls blending between PIC (Particle-in-Cell) * and FLIP (Fluid-Implicit-Particle) methods (0 = only PIC, 1 = only FLIP) */ -void BPH_hair_volume_grid_velocity(struct HairGrid *grid, const float x[3], const float v[3], - float fluid_factor, - float r_v[3]); +void BPH_hair_volume_grid_velocity( + struct HairGrid *grid, const float x[3], const float v[3], float fluid_factor, float r_v[3]); /* XXX Warning: expressing grid effects on velocity as a force is not very stable, * due to discontinuities in interpolated values! * Better use hybrid approaches such as described in * "Detail Preserving Continuum Simulation of Straight Hair" * (McAdams, Selle 2009) */ -void BPH_hair_volume_vertex_grid_forces(struct HairGrid *grid, const float x[3], const float v[3], - float smoothfac, float pressurefac, float minpressure, - float f[3], float dfdx[3][3], float dfdv[3][3]); +void BPH_hair_volume_vertex_grid_forces(struct HairGrid *grid, + const float x[3], + const float v[3], + float smoothfac, + float pressurefac, + float minpressure, + float f[3], + float dfdx[3][3], + float dfdv[3][3]); #ifdef __cplusplus } |