diff options
| -rw-r--r-- | source/blender/blenkernel/BKE_cloth.h | 6 | ||||
| -rw-r--r-- | source/blender/blenkernel/intern/cloth.c | 37 | ||||
| -rw-r--r-- | source/blender/physics/intern/BPH_mass_spring.cpp | 51 | ||||
| -rw-r--r-- | source/blender/physics/intern/implicit.h | 10 | ||||
| -rw-r--r-- | source/blender/physics/intern/implicit_blender.c | 34 |
5 files changed, 28 insertions, 110 deletions
diff --git a/source/blender/blenkernel/BKE_cloth.h b/source/blender/blenkernel/BKE_cloth.h index 36330242f18..6c517bd02df 100644 --- a/source/blender/blenkernel/BKE_cloth.h +++ b/source/blender/blenkernel/BKE_cloth.h @@ -136,9 +136,6 @@ typedef struct ClothSpring { float restlen; /* The original length of the spring. */ int type; /* types defined in BKE_cloth.h ("springType") */ int flags; /* defined in BKE_cloth.h, e.g. deactivated due to tearing */ - float dfdx[3][3]; - float dfdv[3][3]; - float f[3]; float stiffness; /* stiffness factor from the vertex groups */ float editrestlen; @@ -240,9 +237,6 @@ void bvhselftree_update_from_cloth(struct ClothModifierData *clmd, bool moving); // needed for button_object.c void cloth_clear_cache (struct Object *ob, struct ClothModifierData *clmd, float framenr ); -// needed for cloth.c -int cloth_add_spring (struct ClothModifierData *clmd, unsigned int indexA, unsigned int indexB, float restlength, int spring_type); - void cloth_parallel_transport_hair_frame(float mat[3][3], const float dir_old[3], const float dir_new[3]); //////////////////////////////////////////////// diff --git a/source/blender/blenkernel/intern/cloth.c b/source/blender/blenkernel/intern/cloth.c index 28ef3f6f248..ee0fde1ea61 100644 --- a/source/blender/blenkernel/intern/cloth.c +++ b/source/blender/blenkernel/intern/cloth.c @@ -869,12 +869,6 @@ static int cloth_from_object(Object *ob, ClothModifierData *clmd, DerivedMesh *d return 0; } - for ( i = 0; i < dm->getNumVerts(dm); i++) { - if ((!(cloth->verts[i].flags & CLOTH_VERT_FLAG_PINNED)) && (cloth->verts[i].goal > ALMOST_ZERO)) { - cloth_add_spring (clmd, i, i, 0.0, CLOTH_SPRING_TYPE_GOAL); - } - } - // init our solver BPH_cloth_solver_init(ob, clmd); @@ -944,37 +938,6 @@ BLI_INLINE void spring_verts_ordered_set(ClothSpring *spring, int v0, int v1) } } -// be careful: implicit solver has to be resettet when using this one! -// --> only for implicit handling of this spring! -int cloth_add_spring(ClothModifierData *clmd, unsigned int indexA, unsigned int indexB, float restlength, int spring_type) -{ - Cloth *cloth = clmd->clothObject; - ClothSpring *spring = NULL; - - if (cloth) { - // TODO: look if this spring is already there - - spring = (ClothSpring *)MEM_callocN ( sizeof ( ClothSpring ), "cloth spring" ); - - if (!spring) - return 0; - - spring->ij = indexA; - spring->kl = indexB; - spring->restlen = restlength; - spring->type = spring_type; - spring->flags = 0; - spring->stiffness = 0; - - cloth->numsprings++; - - BLI_linklist_prepend ( &cloth->springs, spring ); - - return 1; - } - return 0; -} - static void cloth_free_edgelist(LinkNodePair *edgelist, unsigned int mvert_num) { if (edgelist) { diff --git a/source/blender/physics/intern/BPH_mass_spring.cpp b/source/blender/physics/intern/BPH_mass_spring.cpp index 359395b63c4..b694b6e994d 100644 --- a/source/blender/physics/intern/BPH_mass_spring.cpp +++ b/source/blender/physics/intern/BPH_mass_spring.cpp @@ -333,19 +333,14 @@ static int UNUSED_FUNCTION(cloth_calc_helper_forces)(Object *UNUSED(ob), ClothMo return 1; } -BLI_INLINE void cloth_calc_spring_force(ClothModifierData *clmd, ClothSpring *s, float time) +BLI_INLINE void cloth_calc_spring_force(ClothModifierData *clmd, ClothSpring *s) { Cloth *cloth = clmd->clothObject; ClothSimSettings *parms = clmd->sim_parms; Implicit_Data *data = cloth->implicit; - ClothVertex *verts = cloth->verts; bool no_compress = parms->flags & CLOTH_SIMSETTINGS_FLAG_NO_SPRING_COMPRESS; - zero_v3(s->f); - zero_m3(s->dfdx); - zero_m3(s->dfdv); - s->flags &= ~CLOTH_SPRING_FLAG_NEEDED; // calculate force of structural + shear springs @@ -361,31 +356,13 @@ BLI_INLINE void cloth_calc_spring_force(ClothModifierData *clmd, ClothSpring *s, if (s->type & CLOTH_SPRING_TYPE_SEWING) { // TODO: verify, half verified (couldn't see error) // sewing springs usually have a large distance at first so clamp the force so we don't get tunnelling through colission objects - BPH_mass_spring_force_spring_linear(data, s->ij, s->kl, s->restlen, k, parms->Cdis, no_compress, parms->max_sewing, s->f, s->dfdx, s->dfdv); + BPH_mass_spring_force_spring_linear(data, s->ij, s->kl, s->restlen, k, parms->Cdis, no_compress, parms->max_sewing); } else { - BPH_mass_spring_force_spring_linear(data, s->ij, s->kl, s->restlen, k, parms->Cdis, no_compress, 0.0f, s->f, s->dfdx, s->dfdv); + BPH_mass_spring_force_spring_linear(data, s->ij, s->kl, s->restlen, k, parms->Cdis, no_compress, 0.0f); } #endif } - else if (s->type & CLOTH_SPRING_TYPE_GOAL) { -#ifdef CLOTH_FORCE_SPRING_GOAL - float goal_x[3], goal_v[3]; - float k, scaling; - - s->flags |= CLOTH_SPRING_FLAG_NEEDED; - - // current_position = xold + t * (newposition - xold) - /* divide by time_scale to prevent goal vertices' delta locations from being multiplied */ - interp_v3_v3v3(goal_x, verts[s->ij].xold, verts[s->ij].xconst, time / parms->time_scale); - sub_v3_v3v3(goal_v, verts[s->ij].xconst, verts[s->ij].xold); // distance covered over dt==1 - - scaling = parms->goalspring + s->stiffness * fabsf(parms->max_struct - parms->goalspring); - k = verts[s->ij].goal * scaling / (parms->avg_spring_len + FLT_EPSILON); - - BPH_mass_spring_force_spring_goal(data, s->ij, goal_x, goal_v, k, parms->goalfrict * 0.01f, s->f, s->dfdx, s->dfdv); -#endif - } else if (s->type & CLOTH_SPRING_TYPE_BENDING) { /* calculate force of bending springs */ #ifdef CLOTH_FORCE_SPRING_BEND float kb, cb, scaling; @@ -398,7 +375,7 @@ BLI_INLINE void cloth_calc_spring_force(ClothModifierData *clmd, ClothSpring *s, // Fix for [#45084] for cloth stiffness must have cb proportional to kb cb = kb * parms->bending_damping; - BPH_mass_spring_force_spring_bending(data, s->ij, s->kl, s->restlen, kb, cb, s->f, s->dfdx, s->dfdv); + BPH_mass_spring_force_spring_bending(data, s->ij, s->kl, s->restlen, kb, cb); #endif } else if (s->type & CLOTH_SPRING_TYPE_BENDING_ANG) { @@ -474,9 +451,24 @@ static void cloth_calc_force(ClothModifierData *clmd, float UNUSED(frame), ListB /* scale gravity force */ mul_v3_v3fl(gravity, clmd->scene->physics_settings.gravity, 0.001f * clmd->sim_parms->effector_weights->global_gravity); } + vert = cloth->verts; for (i = 0; i < cloth->mvert_num; i++, vert++) { BPH_mass_spring_force_gravity(data, i, vert->mass, gravity); + + /* Vertex goal springs */ + if ((!(vert->flags & CLOTH_VERT_FLAG_PINNED)) && (vert->goal > FLT_EPSILON)) { + float goal_x[3], goal_v[3]; + float k; + + /* divide by time_scale to prevent goal vertices' delta locations from being multiplied */ + interp_v3_v3v3(goal_x, vert->xold, vert->xconst, time / clmd->sim_parms->time_scale); + sub_v3_v3v3(goal_v, vert->xconst, vert->xold); /* distance covered over dt==1 */ + + k = vert->goal * clmd->sim_parms->goalspring / (clmd->sim_parms->avg_spring_len + FLT_EPSILON); + + BPH_mass_spring_force_spring_goal(data, i, goal_x, goal_v, k, clmd->sim_parms->goalfrict * 0.01f); + } } #endif @@ -544,8 +536,9 @@ static void cloth_calc_force(ClothModifierData *clmd, float UNUSED(frame), ListB for (LinkNode *link = cloth->springs; link; link = link->next) { ClothSpring *spring = (ClothSpring *)link->link; // only handle active springs - if (!(spring->flags & CLOTH_SPRING_FLAG_DEACTIVATE)) - cloth_calc_spring_force(clmd, spring, time); + if (!(spring->flags & CLOTH_SPRING_FLAG_DEACTIVATE)) { + cloth_calc_spring_force(clmd, spring); + } } } diff --git a/source/blender/physics/intern/implicit.h b/source/blender/physics/intern/implicit.h index d1a75ca5297..2f62ab98e12 100644 --- a/source/blender/physics/intern/implicit.h +++ b/source/blender/physics/intern/implicit.h @@ -114,19 +114,15 @@ void BPH_mass_spring_force_edge_wind(struct Implicit_Data *data, int v1, int v2, 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, float damping, bool no_compress, float clamp_force, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]); + float stiffness, float damping, bool no_compress, float clamp_force); /* 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, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]); +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_angular(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 r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]); + float stiffness, float damping); /* ======== Hair Volumetric Forces ======== */ diff --git a/source/blender/physics/intern/implicit_blender.c b/source/blender/physics/intern/implicit_blender.c index 2ad8ee0547f..16cd335dc0c 100644 --- a/source/blender/physics/intern/implicit_blender.c +++ b/source/blender/physics/intern/implicit_blender.c @@ -1579,8 +1579,7 @@ BLI_INLINE void apply_spring(Implicit_Data *data, int i, int j, const float f[3] } bool BPH_mass_spring_force_spring_linear(Implicit_Data *data, int i, int j, float restlen, - float stiffness, float damping, bool no_compress, float clamp_force, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]) + float stiffness, float damping, bool no_compress, float clamp_force) { float extent[3], length, dir[3], vel[3]; @@ -1608,25 +1607,15 @@ bool BPH_mass_spring_force_spring_linear(Implicit_Data *data, int i, int j, floa apply_spring(data, i, j, f, dfdx, dfdv); - if (r_f) copy_v3_v3(r_f, f); - if (r_dfdx) copy_m3_m3(r_dfdx, dfdx); - if (r_dfdv) copy_m3_m3(r_dfdv, dfdv); - return true; } else { - if (r_f) zero_v3(r_f); - if (r_dfdx) zero_m3(r_dfdx); - if (r_dfdv) zero_m3(r_dfdv); - return false; } } /* See "Stable but Responsive Cloth" (Choi, Ko 2005) */ -bool BPH_mass_spring_force_spring_bending(Implicit_Data *data, int i, int j, float restlen, - float kb, float cb, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]) +bool BPH_mass_spring_force_spring_bending(Implicit_Data *data, int i, int j, float restlen, float kb, float cb) { float extent[3], length, dir[3], vel[3]; @@ -1646,17 +1635,9 @@ bool BPH_mass_spring_force_spring_bending(Implicit_Data *data, int i, int j, flo apply_spring(data, i, j, f, dfdx, dfdv); - if (r_f) copy_v3_v3(r_f, f); - if (r_dfdx) copy_m3_m3(r_dfdx, dfdx); - if (r_dfdv) copy_m3_m3(r_dfdv, dfdv); - return true; } else { - if (r_f) zero_v3(r_f); - if (r_dfdx) zero_m3(r_dfdx); - if (r_dfdv) zero_m3(r_dfdv); - return false; } } @@ -1945,8 +1926,7 @@ bool BPH_mass_spring_force_spring_bending_angular(Implicit_Data *data, int i, in } bool BPH_mass_spring_force_spring_goal(Implicit_Data *data, int i, const float goal_x[3], const float goal_v[3], - float stiffness, float damping, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]) + float stiffness, float damping) { float root_goal_x[3], root_goal_v[3], extent[3], length, dir[3], vel[3]; float f[3], dfdx[3][3], dfdv[3][3]; @@ -1973,17 +1953,9 @@ bool BPH_mass_spring_force_spring_goal(Implicit_Data *data, int i, const float g add_m3_m3m3(data->dFdX[i].m, data->dFdX[i].m, dfdx); add_m3_m3m3(data->dFdV[i].m, data->dFdV[i].m, dfdv); - if (r_f) copy_v3_v3(r_f, f); - if (r_dfdx) copy_m3_m3(r_dfdx, dfdx); - if (r_dfdv) copy_m3_m3(r_dfdv, dfdv); - return true; } else { - if (r_f) zero_v3(r_f); - if (r_dfdx) zero_m3(r_dfdx); - if (r_dfdv) zero_m3(r_dfdv); - return false; } } |