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Diffstat (limited to 'source/blender/physics/intern/implicit.h')
| -rw-r--r-- | source/blender/physics/intern/implicit.h | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/source/blender/physics/intern/implicit.h b/source/blender/physics/intern/implicit.h deleted file mode 100644 index 8bc09755180..00000000000 --- a/source/blender/physics/intern/implicit.h +++ /dev/null @@ -1,272 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * The Original Code is Copyright (C) Blender Foundation - * All rights reserved. - */ - -#ifndef __IMPLICIT_H__ -#define __IMPLICIT_H__ - -/** \file - * \ingroup bph - */ - -#include "stdio.h" - -#include "BLI_utildefines.h" - -#include "BKE_collision.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//#define IMPLICIT_SOLVER_EIGEN -#define IMPLICIT_SOLVER_BLENDER - -#define CLOTH_ROOT_FRAME /* enable use of root frame coordinate transform */ - -#define CLOTH_FORCE_GRAVITY -#define CLOTH_FORCE_DRAG -#define CLOTH_FORCE_SPRING_STRUCTURAL -#define CLOTH_FORCE_SPRING_SHEAR -#define CLOTH_FORCE_SPRING_BEND -#define CLOTH_FORCE_SPRING_GOAL -#define CLOTH_FORCE_EFFECTORS - -//#define IMPLICIT_PRINT_SOLVER_INPUT_OUTPUT - -//#define IMPLICIT_ENABLE_EIGEN_DEBUG - -struct Implicit_Data; - -typedef struct ImplicitSolverResult { - int status; - - int iterations; - float error; -} ImplicitSolverResult; - -BLI_INLINE void implicit_print_matrix_elem(float 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_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_position(struct Implicit_Data *data, int index, float x[3]); -void BPH_mass_spring_get_velocity(struct Implicit_Data *data, int index, float v[3]); - -/* access to modified motion state during solver step */ -void BPH_mass_spring_get_new_position(struct Implicit_Data *data, int index, float x[3]); -void BPH_mass_spring_set_new_position(struct Implicit_Data *data, int index, const float x[3]); -void BPH_mass_spring_get_new_velocity(struct Implicit_Data *data, int index, float v[3]); -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); -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); -/* Simple uniform gravity force */ -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]); -/* Wind force, acting on a face (only generates pressure from the normal component) */ -void BPH_mass_spring_force_face_wind( - struct Implicit_Data *data, int v1, int v2, int v3, const float (*winvec)[3]); -/* Arbitrary per-unit-area vector force field acting on a face. */ -void BPH_mass_spring_force_face_extern( - struct Implicit_Data *data, int v1, int v2, int v3, const float (*forcevec)[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]); -/* 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]); -/* 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); -/* 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); -/* 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); -/* 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); -/* 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); - -float BPH_tri_tetra_volume_signed_6x(struct Implicit_Data *data, int v1, int v2, int v3); -float BPH_tri_area(struct Implicit_Data *data, int v1, int v2, int v3); - -void BPH_mass_spring_force_pressure(struct Implicit_Data *data, - int v1, - int v2, - int v3, - float common_pressure, - const float *vertex_pressure, - const float weights[3]); - -/* ======== Hair Volumetric Forces ======== */ - -struct HairGrid; - -#define MAX_HAIR_GRID_RES 256 - -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_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]); - -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); -#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]); - -/* 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]); -/* 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]); - -#ifdef __cplusplus -} -#endif - -#endif |