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- missed commit of file with mesh_calc_normals

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Daniel Dunbar
2005-07-17 21:24:43 +00:00
parent 5bc4eae608
commit a92a513c19
1 changed files with 43 additions and 0 deletions
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43
source/blender/blenkernel/intern/mesh.c
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@@ -1287,3 +1287,46 @@ void mesh_set_smooth_flag(Object *meshOb, int enableSmooth) {
DAG_object_flush_update(G.scene, meshOb, OB_RECALC_DATA);
}
void mesh_calc_normals(MVert *mverts, int numVerts, MFace *mfaces, int numFaces, float **faceNors_r)
{
float (*tnorms)[3]= MEM_callocN(numVerts*sizeof(*tnorms), "tnorms");
float *fnors= MEM_mallocN(sizeof(*fnors)*3*numFaces, "meshnormals");
int i;
for (i=0; i<numFaces; i++) {
MFace *mf= &mfaces[i];
if (mf->v3) {
float *f_no= &fnors[i*3];
if (mf->v4)
CalcNormFloat4(mverts[mf->v1].co, mverts[mf->v2].co, mverts[mf->v3].co, mverts[mf->v4].co, f_no);
else
CalcNormFloat(mverts[mf->v1].co, mverts[mf->v2].co, mverts[mf->v3].co, f_no);
VecAddf(tnorms[mf->v1], tnorms[mf->v1], f_no);
VecAddf(tnorms[mf->v2], tnorms[mf->v2], f_no);
VecAddf(tnorms[mf->v3], tnorms[mf->v3], f_no);
if (mf->v4)
VecAddf(tnorms[mf->v4], tnorms[mf->v4], f_no);
}
}
for (i=0; i<numVerts; i++) {
MVert *mv= &mverts[i];
float *no= tnorms[i];
Normalise(no);
mv->no[0]= (short)(no[0]*32767.0);
mv->no[1]= (short)(no[1]*32767.0);
mv->no[2]= (short)(no[2]*32767.0);
}
MEM_freeN(tnorms);
if (faceNors_r) {
*faceNors_r = fnors;
} else {
MEM_freeN(fnors);
}
}