kannonier8/blender
1
0
Fork 0
forked from bartvdbraak/blender
Code Pull Requests Activity

Added a mesh_calculate_vertex_normals function for rebuilding the normals

Browse Source 
outside edit mode.
This commit is contained in:
Daniel Dunbar 2003-03-24 15:55:21 +00:00
parent 2aad6b3321
commit b224f90da7
2 changed files with 43 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
source/blender/blenkernel/BKE_mesh.h
View File

@ -109,6 +109,12 @@ int rendermesh_uses_displist(struct Mesh *me);
float get_mvert_weight (struct Object *ob, int vert, int defgroup);
int update_realtime_texture(struct TFace *tface, double time);
/** Generate the mesh vertex normals by averaging over connected faces.
*
* @param me The mesh to update.
*/
void mesh_calculate_vertex_normals (Mesh *me);
#ifdef __cplusplus
}
#endif

37
source/blender/blenkernel/intern/mesh.c
View File

@ -1120,3 +1120,40 @@ int mesh_uses_displist(Mesh *me) {
int rendermesh_uses_displist(Mesh *me) {
return (me->flag&ME_SUBSURF);
}
void mesh_calculate_vertex_normals(Mesh *me)
{
float (*tempNorms)[3]= MEM_callocN(me->totvert*sizeof(*tempNorms), "tempNorms");
int i;
for (i=0; i<me->totface; i++) {
MFace *mf= &((MFace*) me->mface)[i];
float f_no[3];
if (!mf->v3)
continue;
if (mf->v4) {
CalcNormFloat4(me->mvert[mf->v1].co, me->mvert[mf->v2].co, me->mvert[mf->v3].co, me->mvert[mf->v4].co, f_no);
} else {
CalcNormFloat(me->mvert[mf->v1].co, me->mvert[mf->v2].co, me->mvert[mf->v3].co, f_no);
}
VecAddf(tempNorms[mf->v1], tempNorms[mf->v1], f_no);
VecAddf(tempNorms[mf->v2], tempNorms[mf->v2], f_no);
VecAddf(tempNorms[mf->v3], tempNorms[mf->v3], f_no);
if (mf->v4)
VecAddf(tempNorms[mf->v4], tempNorms[mf->v4], f_no);
}
for (i=0; i<me->totvert; i++) {
MVert *mv= &me->mvert[i];
float *no= tempNorms[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(tempNorms);
}