diff options
Diffstat (limited to 'source/blender/src/meshtools.c')
| -rw-r--r-- | source/blender/src/meshtools.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/source/blender/src/meshtools.c b/source/blender/src/meshtools.c index 41a9bece61a..d901644c19f 100644 --- a/source/blender/src/meshtools.c +++ b/source/blender/src/meshtools.c @@ -93,6 +93,7 @@ void sort_faces(void); #include "BDR_sculptmode.h" #include "BLI_editVert.h" +#include "BLI_ghash.h" #include "BLI_threads.h" #include "BLI_rand.h" /* for randome face sorting */ @@ -820,6 +821,100 @@ EditVert *editmesh_get_x_mirror_vert(Object *ob, float *co) return NULL; } +static unsigned int mirror_facehash(void *ptr) +{ + MFace *mf= ptr; + int v0, v1; + + if(mf->v4) { + v0= MIN4(mf->v1, mf->v2, mf->v3, mf->v4); + v1= MAX4(mf->v1, mf->v2, mf->v3, mf->v4); + } + else { + v0= MIN3(mf->v1, mf->v2, mf->v3); + v1= MAX3(mf->v1, mf->v2, mf->v3); + } + + return ((v0*39)^(v1*31)); +} + +static int mirror_facerotation(MFace *a, MFace *b) +{ + if(b->v4) { + if(a->v1==b->v1 && a->v2==b->v2 && a->v3==b->v3 && a->v4==b->v4) + return 0; + else if(a->v4==b->v1 && a->v1==b->v2 && a->v2==b->v3 && a->v3==b->v4) + return 1; + else if(a->v3==b->v1 && a->v4==b->v2 && a->v1==b->v3 && a->v2==b->v4) + return 2; + else if(a->v2==b->v1 && a->v3==b->v2 && a->v4==b->v3 && a->v1==b->v4) + return 3; + } + else { + if(a->v1==b->v1 && a->v2==b->v2 && a->v3==b->v3) + return 0; + else if(a->v3==b->v1 && a->v1==b->v2 && a->v2==b->v3) + return 1; + else if(a->v2==b->v1 && a->v3==b->v2 && a->v1==b->v3) + return 2; + } + + return -1; +} + +static int mirror_facecmp(void *a, void *b) +{ + return (mirror_facerotation((MFace*)a, (MFace*)b) == -1); +} + +int *mesh_get_x_mirror_faces(Object *ob) +{ + Mesh *me= ob->data; + MVert *mv, *mvert= me->mvert; + MFace mirrormf, *mf, *hashmf, *mface= me->mface; + GHash *fhash; + int *mirrorverts, *mirrorfaces; + float vec[3]; + int a; + + mirrorverts= MEM_callocN(sizeof(int)*me->totvert, "MirrorVerts"); + mirrorfaces= MEM_callocN(sizeof(int)*2*me->totface, "MirrorFaces"); + + mesh_octree_table(ob, NULL, 's'); + + for(a=0, mv=mvert; a<me->totvert; a++, mv++) { + vec[0]= -mv->co[0]; + vec[1]= mv->co[1]; + vec[2]= mv->co[2]; + mirrorverts[a]= mesh_octree_table(ob, vec, 'u'); + } + + mesh_octree_table(ob, NULL, 'e'); + + fhash= BLI_ghash_new(mirror_facehash, mirror_facecmp); + for(a=0, mf=mface; a<me->totface; a++, mf++) + BLI_ghash_insert(fhash, mf, mf); + + for(a=0, mf=mface; a<me->totface; a++, mf++) { + mirrormf.v1= mirrorverts[mf->v3]; + mirrormf.v2= mirrorverts[mf->v2]; + mirrormf.v3= mirrorverts[mf->v1]; + mirrormf.v4= (mf->v4)? mirrorverts[mf->v4]: 0; + + hashmf= BLI_ghash_lookup(fhash, &mirrormf); + if(hashmf) { + mirrorfaces[a*2]= hashmf - mface; + mirrorfaces[a*2+1]= mirror_facerotation(&mirrormf, hashmf); + } + else + mirrorfaces[a*2]= -1; + } + + BLI_ghash_free(fhash, NULL, NULL); + MEM_freeN(mirrorverts); + + return mirrorfaces; +} /* ****************** render BAKING ********************** */ |