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decimator - interpolate vertex normals rather then re-calculating them. faster and means degenerate faces wont explode.

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Campbell Barton
2012-11-07 07:16:28 +00:00
parent be367890f7
commit efc44d0c4d
1 changed files with 12 additions and 0 deletions
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12
source/blender/bmesh/intern/bmesh_decimate_collapse.c
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@@ -45,6 +45,7 @@
/* defines for testing */
#define USE_CUSTOMDATA
#define USE_TRIANGULATE
#define USE_VERT_NORMAL_INTERP /* has the advantage that flipped faces don't mess up vertex normals */
/* these checks are for rare cases that we can't avoid since they are valid meshes still */
#define USE_SAFETY_CHECKS
@@ -774,6 +775,11 @@ static void bm_decim_edge_collapse(BMesh *bm, BMEdge *e,
float optimize_co[3];
float customdata_fac;
#ifdef USE_VERT_NORMAL_INTERP
float v_clear_no[3];
copy_v3_v3(v_clear_no, e->v2->no);
#endif
bm_decim_calc_target_co(e, optimize_co, vquadrics);
/* use for customdata merging */
@@ -822,7 +828,13 @@ static void bm_decim_edge_collapse(BMesh *bm, BMEdge *e,
/* in fact face normals are not used for progressive updates, no need to update them */
// BM_vert_normal_update_all(v);
#ifdef USE_VERT_NORMAL_INTERP
interp_v3_v3v3(v_other->no, v_other->no, v_clear_no, customdata_fac);
normalize_v3(v_other->no);
#else
BM_vert_normal_update(v_other);
#endif
/* update error costs and the eheap */
if (LIKELY(v_other->e)) {