diff options
Diffstat (limited to 'source/blender/blenkernel/intern/collision.c')
| -rw-r--r-- | source/blender/blenkernel/intern/collision.c | 680 |
1 files changed, 365 insertions, 315 deletions
diff --git a/source/blender/blenkernel/intern/collision.c b/source/blender/blenkernel/intern/collision.c index e244ccca306..f3637b4dda2 100644 --- a/source/blender/blenkernel/intern/collision.c +++ b/source/blender/blenkernel/intern/collision.c @@ -41,7 +41,6 @@ #include "BKE_global.h" #include "BKE_mesh.h" #include "BKE_object.h" -#include "BKE_cloth.h" #include "BKE_modifier.h" #include "BKE_utildefines.h" #include "BKE_DerivedMesh.h" @@ -49,6 +48,38 @@ #include "Bullet-C-Api.h" +#include "BLI_kdopbvh.h" +#include "BKE_collision.h" + +#ifdef _WIN32 +static void start ( void ) +{} +static void end ( void ) +{ +} +static double val() +{ + return 0; +} +#else +#include <sys/time.h> +static void mystart ( struct timeval *start, struct timezone *z ) +{ + gettimeofday ( start, z ); +} +static void myend ( struct timeval *end, struct timezone *z ) +{ + gettimeofday ( end,z ); +} +static double myval ( struct timeval *start, struct timeval *end ) +{ + double t1, t2; + t1 = ( double ) start->tv_sec + ( double ) start->tv_usec/ ( 1000*1000 ); + t2 = ( double ) end->tv_sec + ( double ) end->tv_usec/ ( 1000*1000 ); + return t2-t1; +} +#endif + /*********************************** Collision modifier code start ***********************************/ @@ -66,58 +97,80 @@ void collision_move_object ( CollisionModifierData *collmd, float step, float pr VECADDS ( collmd->current_xnew[i].co, collmd->x[i].co, tv, step ); VECSUB ( collmd->current_v[i].co, collmd->current_xnew[i].co, collmd->current_x[i].co ); } - bvh_update_from_mvert ( collmd->bvh, collmd->current_x, collmd->numverts, collmd->current_xnew, 1 ); + bvhtree_update_from_mvert ( collmd->bvhtree, collmd->mfaces, collmd->numfaces, collmd->current_x, collmd->current_xnew, collmd->numverts, 1 ); } -/* build bounding volume hierarchy from mverts (see kdop.c for whole BVH code) */ -BVH *bvh_build_from_mvert ( MFace *mfaces, unsigned int numfaces, MVert *x, unsigned int numverts, float epsilon ) +BVHTree *bvhtree_build_from_mvert ( MFace *mfaces, unsigned int numfaces, MVert *x, unsigned int numverts, float epsilon ) { - BVH *bvh=NULL; - - bvh = MEM_callocN ( sizeof ( BVH ), "BVH" ); - if ( bvh == NULL ) - { - printf ( "bvh: Out of memory.\n" ); - return NULL; - } - - // in the moment, return zero if no faces there - if ( !numfaces ) - return NULL; + BVHTree *tree; + float co[12]; + int i; + MFace *tface = mfaces; - bvh->epsilon = epsilon; - bvh->numfaces = numfaces; - bvh->mfaces = mfaces; + tree = BLI_bvhtree_new ( numfaces*2, epsilon, 4, 26 ); - // we have no faces, we save seperate points - if ( !mfaces ) + // fill tree + for ( i = 0; i < numfaces; i++, tface++ ) { - bvh->numfaces = numverts; - } + VECCOPY ( &co[0*3], x[tface->v1].co ); + VECCOPY ( &co[1*3], x[tface->v2].co ); + VECCOPY ( &co[2*3], x[tface->v3].co ); + if ( tface->v4 ) + VECCOPY ( &co[3*3], x[tface->v4].co ); - bvh->numverts = numverts; - bvh->current_x = MEM_dupallocN ( x ); + BLI_bvhtree_insert ( tree, i, co, ( mfaces->v4 ? 4 : 3 ) ); + } - bvh_build ( bvh ); + // balance tree + BLI_bvhtree_balance ( tree ); - return bvh; + return tree; } -void bvh_update_from_mvert ( BVH * bvh, MVert *x, unsigned int numverts, MVert *xnew, int moving ) +void bvhtree_update_from_mvert ( BVHTree * bvhtree, MFace *faces, int numfaces, MVert *x, MVert *xnew, int numverts, int moving ) { - if ( !bvh ) - return; + int i; + MFace *mfaces = faces; + float co[12], co_moving[12]; + int ret = 0; - if ( numverts!=bvh->numverts ) + if ( !bvhtree ) return; if ( x ) - memcpy ( bvh->current_xold, x, sizeof ( MVert ) * numverts ); + { + for ( i = 0; i < numfaces; i++, mfaces++ ) + { + VECCOPY ( &co[0*3], x[mfaces->v1].co ); + VECCOPY ( &co[1*3], x[mfaces->v2].co ); + VECCOPY ( &co[2*3], x[mfaces->v3].co ); + if ( mfaces->v4 ) + VECCOPY ( &co[3*3], x[mfaces->v4].co ); + + // copy new locations into array + if ( moving && xnew ) + { + // update moving positions + VECCOPY ( &co_moving[0*3], xnew[mfaces->v1].co ); + VECCOPY ( &co_moving[1*3], xnew[mfaces->v2].co ); + VECCOPY ( &co_moving[2*3], xnew[mfaces->v3].co ); + if ( mfaces->v4 ) + VECCOPY ( &co_moving[3*3], xnew[mfaces->v4].co ); + + ret = BLI_bvhtree_update_node ( bvhtree, i, co, co_moving, ( mfaces->v4 ? 4 : 3 ) ); + } + else + { + ret = BLI_bvhtree_update_node ( bvhtree, i, co, NULL, ( mfaces->v4 ? 4 : 3 ) ); + } - if ( xnew ) - memcpy ( bvh->current_x, xnew, sizeof ( MVert ) * numverts ); + // check if tree is already full + if ( !ret ) + break; + } - bvh_update ( bvh, moving ); + BLI_bvhtree_update_tree ( bvhtree ); + } } /*********************************** @@ -157,11 +210,11 @@ int gsl_poly_solve_cubic ( float a, float b, float c, float *x0, float *x1, floa else if ( CR2 == CQ3 ) { /* this test is actually R2 == Q3, written in a form suitable - for exact computation with integers */ + for exact computation with integers */ /* Due to finite precision some float roots may be missed, and - considered to be a pair of complex roots z = x +/- epsilon i - close to the real axis. */ + considered to be a pair of complex roots z = x +/- epsilon i + close to the real axis. */ float sqrtQ = sqrt ( Q ); @@ -419,24 +472,22 @@ DO_INLINE void collision_interpolateOnTriangle ( float to[3], float v1[3], float VECADDMUL ( to, v3, w3 ); } -int cloth_collision_response_static ( ClothModifierData *clmd, CollisionModifierData *collmd ) +int cloth_collision_response_static ( ClothModifierData *clmd, CollisionModifierData *collmd, CollPair *collpair, CollPair *collision_end ) { int result = 0; - LinkNode *search = NULL; - CollPair *collpair = NULL; Cloth *cloth1; float w1, w2, w3, u1, u2, u3; float v1[3], v2[3], relativeVelocity[3]; float magrelVel; - float epsilon2 = collmd->bvh->epsilon; + float epsilon2 = BLI_bvhtree_getepsilon ( collmd->bvhtree ); cloth1 = clmd->clothObject; - search = clmd->coll_parms->collision_list; - - while ( search ) + for ( ; collpair != collision_end; collpair++ ) { - collpair = search->link; + // only handle static collisions here + if ( collpair->flag & COLLISION_IN_FUTURE ) + continue; // compute barycentric coordinates for both collision points collision_compute_barycentric ( collpair->pa, @@ -530,8 +581,6 @@ int cloth_collision_response_static ( ClothModifierData *clmd, CollisionModifier result = 1; } - - search = search->next; } @@ -549,51 +598,46 @@ int cloth_collision_response_moving_edges ( ClothModifierData *clmd, ClothModifi return 1; } -void cloth_collision_static ( ModifierData *md1, ModifierData *md2, CollisionTree *tree1, CollisionTree *tree2 ) +//Determines collisions on overlap, collisions are writen to collpair[i] and collision+number_collision_found is returned +CollPair* cloth_collision ( ModifierData *md1, ModifierData *md2, BVHTreeOverlap *overlap, CollPair *collpair ) { ClothModifierData *clmd = ( ClothModifierData * ) md1; CollisionModifierData *collmd = ( CollisionModifierData * ) md2; - CollPair *collpair = NULL; - Cloth *cloth1=NULL; - MFace *face1=NULL, *face2=NULL; - ClothVertex *verts1=NULL; + MFace *face1=NULL, *face2 = NULL; + ClothVertex *verts1 = clmd->clothObject->verts; double distance = 0; - float epsilon = clmd->coll_parms->epsilon; - float epsilon2 = ( ( CollisionModifierData * ) md2 )->bvh->epsilon; - unsigned int i = 0; + float epsilon1 = clmd->coll_parms->epsilon; + float epsilon2 = BLI_bvhtree_getepsilon ( collmd->bvhtree ); + int i; + face1 = & ( clmd->clothObject->mfaces[overlap->indexA] ); + face2 = & ( collmd->mfaces[overlap->indexB] ); + + // check all 4 possible collisions for ( i = 0; i < 4; i++ ) { - collpair = ( CollPair * ) MEM_callocN ( sizeof ( CollPair ), "cloth coll pair" ); - - cloth1 = clmd->clothObject; - - verts1 = cloth1->verts; - - face1 = & ( cloth1->mfaces[tree1->tri_index] ); - face2 = & ( collmd->mfaces[tree2->tri_index] ); - - // check all possible pairs of triangles if ( i == 0 ) { + // fill faceA collpair->ap1 = face1->v1; collpair->ap2 = face1->v2; collpair->ap3 = face1->v3; + // fill faceB collpair->bp1 = face2->v1; collpair->bp2 = face2->v2; collpair->bp3 = face2->v3; - } - - if ( i == 1 ) + else if ( i == 1 ) { if ( face1->v4 ) { - collpair->ap1 = face1->v3; + // fill faceA + collpair->ap1 = face1->v1; collpair->ap2 = face1->v4; - collpair->ap3 = face1->v1; + collpair->ap3 = face1->v3; + // fill faceB collpair->bp1 = face2->v1; collpair->bp2 = face2->v2; collpair->bp3 = face2->v3; @@ -601,235 +645,215 @@ void cloth_collision_static ( ModifierData *md1, ModifierData *md2, CollisionTre else i++; } - if ( i == 2 ) { if ( face2->v4 ) { + // fill faceA collpair->ap1 = face1->v1; collpair->ap2 = face1->v2; collpair->ap3 = face1->v3; - collpair->bp1 = face2->v3; + // fill faceB + collpair->bp1 = face2->v1; collpair->bp2 = face2->v4; - collpair->bp3 = face2->v1; + collpair->bp3 = face2->v3; } else - i+=2; + break; } - - if ( i == 3 ) + else if ( i == 3 ) { - if ( ( face1->v4 ) && ( face2->v4 ) ) + if ( face1->v4 && face2->v4 ) { - collpair->ap1 = face1->v3; + // fill faceA + collpair->ap1 = face1->v1; collpair->ap2 = face1->v4; - collpair->ap3 = face1->v1; + collpair->ap3 = face1->v3; - collpair->bp1 = face2->v3; + // fill faceB + collpair->bp1 = face2->v1; collpair->bp2 = face2->v4; - collpair->bp3 = face2->v1; + collpair->bp3 = face2->v3; } else - i++; + break; } - // calc SIPcode (?) - - if ( i < 4 ) - { - // calc distance + normal #ifdef WITH_BULLET - distance = plNearestPoints ( - verts1[collpair->ap1].txold, verts1[collpair->ap2].txold, verts1[collpair->ap3].txold, collmd->current_x[collpair->bp1].co, collmd->current_x[collpair->bp2].co, collmd->current_x[collpair->bp3].co, collpair->pa,collpair->pb,collpair->vector ); + // calc distance + normal + distance = plNearestPoints ( + verts1[collpair->ap1].txold, verts1[collpair->ap2].txold, verts1[collpair->ap3].txold, collmd->current_x[collpair->bp1].co, collmd->current_x[collpair->bp2].co, collmd->current_x[collpair->bp3].co, collpair->pa,collpair->pb,collpair->vector ); #else - // just be sure that we don't add anything - distance = 2.0 * ( epsilon + epsilon2 + ALMOST_ZERO ); + // just be sure that we don't add anything + distance = 2.0 * ( epsilon1 + epsilon2 + ALMOST_ZERO ); #endif - if ( distance <= ( epsilon + epsilon2 + ALMOST_ZERO ) ) - { - // printf("dist: %f\n", (float)distance); - - // collpair->face1 = tree1->tri_index; - // collpair->face2 = tree2->tri_index; - VECCOPY ( collpair->normal, collpair->vector ); - Normalize ( collpair->normal ); - - collpair->distance = distance; - BLI_linklist_prepend ( &clmd->coll_parms->collision_list, collpair ); + if ( distance <= ( epsilon1 + epsilon2 + ALMOST_ZERO ) ) + { + VECCOPY ( collpair->normal, collpair->vector ); + Normalize ( collpair->normal ); - } - else - { - MEM_freeN ( collpair ); - } + collpair->distance = distance; + collpair->flag = 0; } else { - MEM_freeN ( collpair ); + // check for collision in the future + collpair->flag |= COLLISION_IN_FUTURE; } + collpair++; } + return collpair; } -int cloth_are_edges_adjacent ( ClothModifierData *clmd, ClothModifierData *coll_clmd, EdgeCollPair *edgecollpair ) +int cloth_are_edges_adjacent ( ClothModifierData *clmd, CollisionModifierData *collmd, EdgeCollPair *edgecollpair ) { - Cloth *cloth1 = NULL, *cloth2 = NULL; - ClothVertex *verts1 = NULL, *verts2 = NULL; + Cloth *cloth1 = NULL; + ClothVertex *verts1 = NULL; float temp[3]; + MVert *verts2 = collmd->current_x; // old x cloth1 = clmd->clothObject; - cloth2 = coll_clmd->clothObject; - verts1 = cloth1->verts; - verts2 = cloth2->verts; - VECSUB ( temp, verts1[edgecollpair->p11].xold, verts2[edgecollpair->p21].xold ); + VECSUB ( temp, verts1[edgecollpair->p11].xold, verts2[edgecollpair->p21].co ); if ( ABS ( INPR ( temp, temp ) ) < ALMOST_ZERO ) return 1; - VECSUB ( temp, verts1[edgecollpair->p11].xold, verts2[edgecollpair->p22].xold ); + VECSUB ( temp, verts1[edgecollpair->p11].xold, verts2[edgecollpair->p22].co ); if ( ABS ( INPR ( temp, temp ) ) < ALMOST_ZERO ) return 1; - VECSUB ( temp, verts1[edgecollpair->p12].xold, verts2[edgecollpair->p21].xold ); + VECSUB ( temp, verts1[edgecollpair->p12].xold, verts2[edgecollpair->p21].co ); if ( ABS ( INPR ( temp, temp ) ) < ALMOST_ZERO ) return 1; - VECSUB ( temp, verts1[edgecollpair->p12].xold, verts2[edgecollpair->p22].xold ); + VECSUB ( temp, verts1[edgecollpair->p12].xold, verts2[edgecollpair->p22].co ); if ( ABS ( INPR ( temp, temp ) ) < ALMOST_ZERO ) return 1; return 0; } -void cloth_collision_moving_edges ( ClothModifierData *clmd, ClothModifierData *coll_clmd, CollisionTree *tree1, CollisionTree *tree2 ) +void cloth_collision_moving_edges ( ClothModifierData *clmd, CollisionModifierData *collmd, CollPair *collpair ) { EdgeCollPair edgecollpair; - Cloth *cloth1=NULL, *cloth2=NULL; - MFace *face1=NULL, *face2=NULL; - ClothVertex *verts1=NULL, *verts2=NULL; + Cloth *cloth1=NULL; + ClothVertex *verts1=NULL; unsigned int i = 0, j = 0, k = 0; int numsolutions = 0; float a[3], b[3], c[3], d[3], e[3], f[3], solution[3]; + MVert *verts2 = collmd->current_x; // old x + MVert *velocity2 = collmd->current_v; // velocity + float mintime = 0; cloth1 = clmd->clothObject; - cloth2 = coll_clmd->clothObject; - verts1 = cloth1->verts; - verts2 = cloth2->verts; - face1 = & ( cloth1->mfaces[tree1->tri_index] ); - face2 = & ( cloth2->mfaces[tree2->tri_index] ); - - for ( i = 0; i < 5; i++ ) + for(i = 0; i < 9; i++) { - if ( i == 0 ) + // 9 edge - edge possibilities + + if(i == 0) // cloth edge: 1-2; coll edge: 1-2 { - edgecollpair.p11 = face1->v1; - edgecollpair.p12 = face1->v2; + edgecollpair.p11 = collpair->ap1; + edgecollpair.p12 = collpair->ap2; + + edgecollpair.p21 = collpair->bp1; + edgecollpair.p22 = collpair->bp2; } - else if ( i == 1 ) + else if(i == 1) // cloth edge: 1-2; coll edge: 2-3 { - edgecollpair.p11 = face1->v2; - edgecollpair.p12 = face1->v3; + edgecollpair.p11 = collpair->ap1; + edgecollpair.p12 = collpair->ap2; + + edgecollpair.p21 = collpair->bp2; + edgecollpair.p22 = collpair->bp3; } - else if ( i == 2 ) + else if(i == 2) // cloth edge: 1-2; coll edge: 1-3 { - if ( face1->v4 ) - { - edgecollpair.p11 = face1->v3; - edgecollpair.p12 = face1->v4; - } - else - { - edgecollpair.p11 = face1->v3; - edgecollpair.p12 = face1->v1; - i+=5; // get out of here after this edge pair is handled - } + edgecollpair.p11 = collpair->ap1; + edgecollpair.p12 = collpair->ap2; + + edgecollpair.p21 = collpair->bp1; + edgecollpair.p22 = collpair->bp3; } - else if ( i == 3 ) + else if(i == 3) // cloth edge: 2-3; coll edge: 1-2 { - if ( face1->v4 ) - { - edgecollpair.p11 = face1->v4; - edgecollpair.p12 = face1->v1; - } - else - continue; + edgecollpair.p11 = collpair->ap2; + edgecollpair.p12 = collpair->ap3; + + edgecollpair.p21 = collpair->bp1; + edgecollpair.p22 = collpair->bp2; } - else + else if(i == 4) // cloth edge: 2-3; coll edge: 2-3 { - edgecollpair.p11 = face1->v3; - edgecollpair.p12 = face1->v1; + edgecollpair.p11 = collpair->ap2; + edgecollpair.p12 = collpair->ap3; + + edgecollpair.p21 = collpair->bp2; + edgecollpair.p22 = collpair->bp3; } - - - for ( j = 0; j < 5; j++ ) + else if(i == 5) // cloth edge: 2-3; coll edge: 1-3 { - if ( j == 0 ) - { - edgecollpair.p21 = face2->v1; - edgecollpair.p22 = face2->v2; - } - else if ( j == 1 ) - { - edgecollpair.p21 = face2->v2; - edgecollpair.p22 = face2->v3; - } - else if ( j == 2 ) - { - if ( face2->v4 ) - { - edgecollpair.p21 = face2->v3; - edgecollpair.p22 = face2->v4; - } - else - { - edgecollpair.p21 = face2->v3; - edgecollpair.p22 = face2->v1; - } - } - else if ( j == 3 ) - { - if ( face2->v4 ) - { - edgecollpair.p21 = face2->v4; - edgecollpair.p22 = face2->v1; - } - else - continue; - } - else - { - edgecollpair.p21 = face2->v3; - edgecollpair.p22 = face2->v1; - } - - - if ( !cloth_are_edges_adjacent ( clmd, coll_clmd, &edgecollpair ) ) + edgecollpair.p11 = collpair->ap2; + edgecollpair.p12 = collpair->ap3; + + edgecollpair.p21 = collpair->bp1; + edgecollpair.p22 = collpair->bp3; + } + else if(i ==6) // cloth edge: 1-3; coll edge: 1-2 + { + edgecollpair.p11 = collpair->ap1; + edgecollpair.p12 = collpair->ap3; + + edgecollpair.p21 = collpair->bp1; + edgecollpair.p22 = collpair->bp2; + } + else if(i ==7) // cloth edge: 1-3; coll edge: 2-3 + { + edgecollpair.p11 = collpair->ap1; + edgecollpair.p12 = collpair->ap3; + + edgecollpair.p21 = collpair->bp2; + edgecollpair.p22 = collpair->bp3; + } + else if(i == 8) // cloth edge: 1-3; coll edge: 1-3 + { + edgecollpair.p11 = collpair->ap1; + edgecollpair.p12 = collpair->ap3; + + edgecollpair.p21 = collpair->bp1; + edgecollpair.p22 = collpair->bp3; + } + + if ( !cloth_are_edges_adjacent ( clmd, collmd, &edgecollpair ) ) + { + // always put coll points in p21/p22 + VECSUB ( a, verts1[edgecollpair.p12].txold, verts1[edgecollpair.p11].txold ); + VECSUB ( b, verts1[edgecollpair.p12].tv, verts1[edgecollpair.p11].tv ); + VECSUB ( c, verts2[edgecollpair.p21].co, verts1[edgecollpair.p11].txold ); + VECSUB ( d, velocity2[edgecollpair.p21].co, verts1[edgecollpair.p11].tv ); + VECSUB ( e, verts2[edgecollpair.p22].co, verts1[edgecollpair.p11].txold ); + VECSUB ( f, velocity2[edgecollpair.p22].co, verts1[edgecollpair.p11].v ); + + numsolutions = cloth_get_collision_time ( a, b, c, d, e, f, solution ); + + for ( k = 0; k < numsolutions; k++ ) { - VECSUB ( a, verts1[edgecollpair.p12].xold, verts1[edgecollpair.p11].xold ); - VECSUB ( b, verts1[edgecollpair.p12].v, verts1[edgecollpair.p11].v ); - VECSUB ( c, verts1[edgecollpair.p21].xold, verts1[edgecollpair.p11].xold ); - VECSUB ( d, verts1[edgecollpair.p21].v, verts1[edgecollpair.p11].v ); - VECSUB ( e, verts2[edgecollpair.p22].xold, verts1[edgecollpair.p11].xold ); - VECSUB ( f, verts2[edgecollpair.p22].v, verts1[edgecollpair.p11].v ); - - numsolutions = cloth_get_collision_time ( a, b, c, d, e, f, solution ); - - for ( k = 0; k < numsolutions; k++ ) + if ( ( solution[k] >= 0.0 ) && ( solution[k] <= 1.0 ) ) { - if ( ( solution[k] >= 0.0 ) && ( solution[k] <= 1.0 ) ) - { - //float out_collisionTime = solution[k]; - - // TODO: check for collisions - - // TODO: put into (edge) collision list - - // printf("Moving edge found!\n"); - } + //float out_collisionTime = solution[k]; + + // TODO: check for collisions + + // TODO: put into (edge) collision list + + mintime = MIN2(mintime, solution[k]); + + printf("Moving edge found!, mintime: %f\n", mintime); + break; } } } @@ -928,6 +952,7 @@ void cloth_collision_moving_tris ( ClothModifierData *clmd, ClothModifierData *c } } +/* void cloth_collision_moving ( ClothModifierData *clmd, ClothModifierData *coll_clmd, CollisionTree *tree1, CollisionTree *tree2 ) { // TODO: check for adjacent @@ -936,51 +961,68 @@ void cloth_collision_moving ( ClothModifierData *clmd, ClothModifierData *coll_c cloth_collision_moving_tris ( clmd, coll_clmd, tree1, tree2 ); cloth_collision_moving_tris ( coll_clmd, clmd, tree2, tree1 ); } +*/ -void cloth_free_collision_list ( ClothModifierData *clmd ) +int cloth_collision_moving ( ClothModifierData *clmd, CollisionModifierData *collmd, CollPair *collpair, CollPair *collision_end ) { - // free collision list - if ( clmd->coll_parms->collision_list ) - { - LinkNode *search = clmd->coll_parms->collision_list; - while ( search ) - { - CollPair *coll_pair = search->link; + int result = 0; + Cloth *cloth1; + float w1, w2, w3, u1, u2, u3; + float v1[3], v2[3], relativeVelocity[3]; + float magrelVel; + float epsilon2 = BLI_bvhtree_getepsilon ( collmd->bvhtree ); - MEM_freeN ( coll_pair ); - search = search->next; - } - BLI_linklist_free ( clmd->coll_parms->collision_list,NULL ); + cloth1 = clmd->clothObject; - clmd->coll_parms->collision_list = NULL; + for ( ; collpair != collision_end; collpair++ ) + { + // only handle moving collisions here + if (!( collpair->flag & COLLISION_IN_FUTURE )) + continue; + + cloth_collision_moving_edges ( clmd, collmd, collpair); } } int cloth_bvh_objcollisions_do ( ClothModifierData * clmd, CollisionModifierData *collmd, float step, float dt ) { Cloth *cloth = clmd->clothObject; - BVH *cloth_bvh= ( BVH * ) cloth->tree; + BVHTree *cloth_bvh= ( BVHTree * ) cloth->bvhtree; long i=0, j = 0, numfaces = 0, numverts = 0; ClothVertex *verts = NULL; + CollPair *collisions = NULL, *collisions_index = NULL; int ret = 0; - unsigned int result = 0; + int result = 0; float tnull[3] = {0,0,0}; + BVHTreeOverlap *overlap = NULL; + numfaces = clmd->clothObject->numfaces; numverts = clmd->clothObject->numverts; verts = cloth->verts; - if ( collmd->bvh ) + if ( collmd->bvhtree ) { /* get pointer to bounding volume hierarchy */ - BVH *coll_bvh = collmd->bvh; + BVHTree *coll_bvh = collmd->bvhtree; /* move object to position (step) in time */ collision_move_object ( collmd, step + dt, step ); /* search for overlapping collision pairs */ - bvh_traverse ( ( ModifierData * ) clmd, ( ModifierData * ) collmd, cloth_bvh->root, coll_bvh->root, step, cloth_collision_static, 0 ); + overlap = BLI_bvhtree_overlap ( cloth_bvh, coll_bvh, &result ); + + collisions = ( CollPair* ) MEM_mallocN ( sizeof ( CollPair ) * result*4, "collision array" ); //*4 since cloth_collision_static can return more than 1 collision + collisions_index = collisions; + + for ( i = 0; i < result; i++ ) + { + collisions_index = cloth_collision ( ( ModifierData * ) clmd, ( ModifierData * ) collmd, overlap+i, collisions_index ); + } + + if ( overlap ) + MEM_freeN ( overlap ); } else { @@ -994,11 +1036,15 @@ int cloth_bvh_objcollisions_do ( ClothModifierData * clmd, CollisionModifierData { result = 0; - if ( collmd->bvh ) - result += cloth_collision_response_static ( clmd, collmd ); + if ( collmd->bvhtree ) + { + result += cloth_collision_response_static ( clmd, collmd, collisions, collisions_index ); + result += cloth_collision_moving ( clmd, collmd, collisions, collisions_index ); + } // apply impulses in parallel if ( result ) + { for ( i = 0; i < numverts; i++ ) { // calculate "velocities" (just xnew = xold + v; no dt in v) @@ -1011,12 +1057,10 @@ int cloth_bvh_objcollisions_do ( ClothModifierData * clmd, CollisionModifierData ret++; } } - - if ( !result ) - break; + } } - cloth_free_collision_list ( clmd ); + if ( collisions ) MEM_freeN ( collisions ); return ret; } @@ -1028,7 +1072,7 @@ int cloth_bvh_objcollision ( ClothModifierData * clmd, float step, float dt ) CollisionModifierData *collmd=NULL; Cloth *cloth=NULL; Object *coll_ob=NULL; - BVH *cloth_bvh=NULL; + BVHTree *cloth_bvh=NULL; long i=0, j = 0, numfaces = 0, numverts = 0; unsigned int result = 0, rounds = 0; // result counts applied collisions; ic is for debug output; ClothVertex *verts = NULL; @@ -1036,14 +1080,14 @@ int cloth_bvh_objcollision ( ClothModifierData * clmd, float step, float dt ) ClothModifierData *tclmd; int collisions = 0, count = 0; - if ( ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_COLLOBJ ) || ! ( ( ( Cloth * ) clmd->clothObject )->tree ) ) + if ( ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_COLLOBJ ) || ! ( ( ( Cloth * ) clmd->clothObject )->bvhtree ) ) { return 0; } cloth = clmd->clothObject; verts = cloth->verts; - cloth_bvh = ( BVH * ) cloth->tree; + cloth_bvh = ( BVHTree * ) cloth->bvhtree; numfaces = clmd->clothObject->numfaces; numverts = clmd->clothObject->numverts; @@ -1052,12 +1096,11 @@ int cloth_bvh_objcollision ( ClothModifierData * clmd, float step, float dt ) //////////////////////////////////////////////////////////// // update cloth bvh - bvh_update_from_cloth ( clmd, 0 ); // 0 means STATIC, 1 means MOVING (see later in this function) + bvhtree_update_from_cloth ( clmd, 0 ); // 0 means STATIC, 1 means MOVING (see later in this function) do { result = 0; - clmd->coll_parms->collision_list = NULL; // check all collision objects for ( base = G.scene->base.first; base; base = base->next ) @@ -1126,80 +1169,87 @@ int cloth_bvh_objcollision ( ClothModifierData * clmd, float step, float dt ) //////////////////////////////////////////////////////////// if ( clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF ) { + + MFace *mface = clmd->clothObject->mfaces; + collisions = 1; verts = cloth->verts; // needed for openMP + + + /* for ( count = 0; count < clmd->coll_parms->self_loop_count; count++ ) { - if ( collisions ) - { - collisions = 0; -#pragma omp parallel for private(i,j, collisions) shared(verts, ret) - for ( i = 0; i < cloth->numverts; i++ ) - { - for ( j = i + 1; j < cloth->numverts; j++ ) - { - float temp[3]; - float length = 0; - float mindistance = clmd->coll_parms->selfepsilon* ( cloth->verts[i].avg_spring_len + cloth->verts[j].avg_spring_len ); + if ( collisions ) + { + collisions = 0; + #pragma omp parallel for private(i,j, collisions) shared(verts, ret) + for ( i = 0; i < cloth->numverts; i++ ) + { + for ( j = i + 1; j < cloth->numverts; j++ ) + { + float temp[3]; + float length = 0; + float mindistance = clmd->coll_parms->selfepsilon* ( cloth->verts[i].avg_spring_len + cloth->verts[j].avg_spring_len ); - if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) - { - if ( ( cloth->verts [i].flags & CLOTH_VERT_FLAG_PINNED ) - && ( cloth->verts [j].flags & CLOTH_VERT_FLAG_PINNED ) ) - { - continue; - } - } + if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) + { + if ( ( cloth->verts [i].flags & CLOTH_VERT_FLAG_PINNED ) + && ( cloth->verts [j].flags & CLOTH_VERT_FLAG_PINNED ) ) + { + continue; + } + } - VECSUB ( temp, verts[i].tx, verts[j].tx ); + VECSUB ( temp, verts[i].tx, verts[j].tx ); - if ( ( ABS ( temp[0] ) > mindistance ) || ( ABS ( temp[1] ) > mindistance ) || ( ABS ( temp[2] ) > mindistance ) ) continue; + if ( ( ABS ( temp[0] ) > mindistance ) || ( ABS ( temp[1] ) > mindistance ) || ( ABS ( temp[2] ) > mindistance ) ) continue; // check for adjacent points (i must be smaller j) - if ( BLI_edgehash_haskey ( cloth->edgehash, i, j ) ) - { - continue; - } - - length = Normalize ( temp ); - - if ( length < mindistance ) - { - float correction = mindistance - length; - - if ( cloth->verts [i].flags & CLOTH_VERT_FLAG_PINNED ) - { - VecMulf ( temp, -correction ); - VECADD ( verts[j].tx, verts[j].tx, temp ); - } - else if ( cloth->verts [j].flags & CLOTH_VERT_FLAG_PINNED ) - { - VecMulf ( temp, correction ); - VECADD ( verts[i].tx, verts[i].tx, temp ); - } - else - { - VecMulf ( temp, -correction*0.5 ); - VECADD ( verts[j].tx, verts[j].tx, temp ); - - VECSUB ( verts[i].tx, verts[i].tx, temp ); - } - - collisions = 1; - - if ( !ret ) - { -#pragma omp critical - { - ret = 1; - } - } - } - } - } - } + if ( BLI_edgehash_haskey ( cloth->edgehash, i, j ) ) + { + continue; + } + + length = Normalize ( temp ); + + if ( length < mindistance ) + { + float correction = mindistance - length; + + if ( cloth->verts [i].flags & CLOTH_VERT_FLAG_PINNED ) + { + VecMulf ( temp, -correction ); + VECADD ( verts[j].tx, verts[j].tx, temp ); + } + else if ( cloth->verts [j].flags & CLOTH_VERT_FLAG_PINNED ) + { + VecMulf ( temp, correction ); + VECADD ( verts[i].tx, verts[i].tx, temp ); + } + else + { + VecMulf ( temp, -correction*0.5 ); + VECADD ( verts[j].tx, verts[j].tx, temp ); + + VECSUB ( verts[i].tx, verts[i].tx, temp ); + } + + collisions = 1; + + if ( !ret ) + { + #pragma omp critical + { + ret = 1; + } + } + } + } + } + } } + */ //////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////// |