diff options
author | Daniel Genrich <daniel.genrich@gmx.net> | 2008-05-08 00:42:16 +0400 |
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committer | Daniel Genrich <daniel.genrich@gmx.net> | 2008-05-08 00:42:16 +0400 |
commit | a68c03e409e01285bee622b12313117012e486a8 (patch) | |
tree | c7b27a5a2fc80a3e5e71cbacc08cd35be121fb06 /source/blender/blenkernel/intern/cloth.c | |
parent | 96408da81a8c8cd5cb737ed4236fc1386ce70c6e (diff) |
Reason of all this work: Commiting my work-in-progress on reviewed collision system (better + general access to kdop, uses less memory, put it into BLI_* namespace and usage defined like existing BLI_kdtree_*). Deleted old kdop.c
Diffstat (limited to 'source/blender/blenkernel/intern/cloth.c')
-rw-r--r-- | source/blender/blenkernel/intern/cloth.c | 124 |
1 files changed, 72 insertions, 52 deletions
diff --git a/source/blender/blenkernel/intern/cloth.c b/source/blender/blenkernel/intern/cloth.c index 4be4434dfda..192ebd90faa 100644 --- a/source/blender/blenkernel/intern/cloth.c +++ b/source/blender/blenkernel/intern/cloth.c @@ -45,6 +45,8 @@ #include "BKE_pointcache.h" +#include "BLI_kdopbvh.h" + #ifdef _WIN32 void tstart ( void ) {} @@ -151,13 +153,14 @@ void cloth_init ( ClothModifierData *clmd ) clmd->sim_parms->goalfrict = 0.0f; } - -BVH *bvh_build_from_cloth (ClothModifierData *clmd, float epsilon) +BVHTree *bvhtree_build_from_cloth (ClothModifierData *clmd, float epsilon) { - unsigned int i = 0; - BVH *bvh=NULL; + int i; + BVHTree *bvhtree; Cloth *cloth = clmd->clothObject; - ClothVertex *verts = NULL; + ClothVertex *verts; + MFace *mfaces; + float co[12]; if(!clmd) return NULL; @@ -168,69 +171,86 @@ BVH *bvh_build_from_cloth (ClothModifierData *clmd, float epsilon) return NULL; verts = cloth->verts; + mfaces = cloth->mfaces; // in the moment, return zero if no faces there if(!cloth->numfaces) return NULL; - bvh = MEM_callocN(sizeof(BVH), "BVH"); - if (bvh == NULL) - { - printf("bvh: Out of memory.\n"); - return NULL; - } - - // springs = cloth->springs; - // numsprings = cloth->numsprings; - - bvh->epsilon = epsilon; - bvh->numfaces = cloth->numfaces; - bvh->mfaces = cloth->mfaces; - - bvh->numverts = cloth->numverts; - - bvh->current_x = MEM_callocN ( sizeof ( MVert ) * bvh->numverts, "bvh->current_x" ); + // create quadtree with k=26 + bvhtree = BLI_bvhtree_new(cloth->numfaces, epsilon, 4, 26); - if (bvh->current_x == NULL) + // fill tree + for(i = 0; i < cloth->numfaces; i++, mfaces++) { - printf("bvh: Out of memory.\n"); - MEM_freeN(bvh); - return NULL; - } - - for(i = 0; i < bvh->numverts; i++) - { - VECCOPY(bvh->current_x[i].co, verts[i].tx); + VECCOPY(&co[0*3], verts[mfaces->v1].xold); + VECCOPY(&co[1*3], verts[mfaces->v2].xold); + VECCOPY(&co[2*3], verts[mfaces->v3].xold); + + if(mfaces->v4) + VECCOPY(&co[3*3], verts[mfaces->v4].xold); + + BLI_bvhtree_insert(bvhtree, i, co, (mfaces->v4 ? 4 : 3)); } - bvh_build (bvh); + // balance tree + BLI_bvhtree_balance(bvhtree); - return bvh; + return bvhtree; } -void bvh_update_from_cloth(ClothModifierData *clmd, int moving) -{ +void bvhtree_update_from_cloth(ClothModifierData *clmd, int moving) +{ unsigned int i = 0; Cloth *cloth = clmd->clothObject; - BVH *bvh = cloth->tree; + BVHTree *bvhtree = cloth->bvhtree; ClothVertex *verts = cloth->verts; + MFace *mfaces; + float co[12], co_moving[12]; + int ret = 0; - if(!bvh) + if(!bvhtree) return; - if(cloth->numverts!=bvh->numverts) - return; + mfaces = cloth->mfaces; - if(cloth->verts) + // update vertex position in bvh tree + if(verts && mfaces) { - for(i = 0; i < bvh->numverts; i++) + for(i = 0; i < cloth->numfaces; i++, mfaces++) { - VECCOPY(bvh->current_x[i].co, verts[i].tx); - VECCOPY(bvh->current_xold[i].co, verts[i].txold); + VECCOPY(&co[0*3], verts[mfaces->v1].txold); + VECCOPY(&co[1*3], verts[mfaces->v2].txold); + VECCOPY(&co[2*3], verts[mfaces->v3].txold); + + if(mfaces->v4) + VECCOPY(&co[3*3], verts[mfaces->v4].txold); + + // copy new locations into array + if(moving) + { + // update moving positions + VECCOPY(&co_moving[0*3], verts[mfaces->v1].tx); + VECCOPY(&co_moving[1*3], verts[mfaces->v2].tx); + VECCOPY(&co_moving[2*3], verts[mfaces->v3].tx); + + if(mfaces->v4) + VECCOPY(&co_moving[3*3], verts[mfaces->v4].tx); + + 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)); + } + + // check if tree is already full + if(!ret) + break; } + + BLI_bvhtree_update_tree(bvhtree); } - - bvh_update(bvh, moving); } int modifiers_indexInObject(Object *ob, ModifierData *md_seek); @@ -541,8 +561,8 @@ void cloth_free_modifier ( Object *ob, ClothModifierData *clmd ) cloth->numsprings = 0; // free BVH collision tree - if ( cloth->tree ) - bvh_free ( ( BVH * ) cloth->tree ); + if ( cloth->bvhtree ) + BLI_bvhtree_free ( cloth->bvhtree ); // we save our faces for collision objects if ( cloth->mfaces ) @@ -611,8 +631,8 @@ void cloth_free_modifier_extern ( ClothModifierData *clmd ) cloth->numsprings = 0; // free BVH collision tree - if ( cloth->tree ) - bvh_free ( ( BVH * ) cloth->tree ); + if ( cloth->bvhtree ) + BLI_bvhtree_free ( cloth->bvhtree ); // we save our faces for collision objects if ( cloth->mfaces ) @@ -810,6 +830,7 @@ static int cloth_from_object(Object *ob, ClothModifierData *clmd, DerivedMesh *d VECCOPY ( verts->xold, verts->x ); VECCOPY ( verts->xconst, verts->x ); VECCOPY ( verts->txold, verts->x ); + VECCOPY ( verts->tx, verts->x ); VecMulf ( verts->v, 0.0f ); verts->impulse_count = 0; @@ -845,12 +866,11 @@ static int cloth_from_object(Object *ob, ClothModifierData *clmd, DerivedMesh *d if(!first) implicit_set_positions(clmd); - clmd->clothObject->tree = bvh_build_from_cloth ( clmd, clmd->coll_parms->epsilon ); - + clmd->clothObject->bvhtree = bvhtree_build_from_cloth ( clmd, clmd->coll_parms->epsilon ); + return 1; } - static void cloth_from_mesh ( Object *ob, ClothModifierData *clmd, DerivedMesh *dm ) { unsigned int numverts = dm->getNumVerts ( dm ); |