diff options
Diffstat (limited to 'source')
-rw-r--r-- | source/blender/bmesh/intern/bmesh_edgeloop.c | 19 | ||||
-rw-r--r-- | source/blender/bmesh/intern/bmesh_edgeloop.h | 4 | ||||
-rw-r--r-- | source/blender/bmesh/operators/bmo_subdivide_edgering.c | 21 |
3 files changed, 32 insertions, 12 deletions
diff --git a/source/blender/bmesh/intern/bmesh_edgeloop.c b/source/blender/bmesh/intern/bmesh_edgeloop.c index 91812fb2cff..dc3a223ae5d 100644 --- a/source/blender/bmesh/intern/bmesh_edgeloop.c +++ b/source/blender/bmesh/intern/bmesh_edgeloop.c @@ -47,7 +47,7 @@ typedef struct BMEdgeLoopStore { } BMEdgeLoopStore; #define BM_EDGELOOP_IS_CLOSED (1 << 0) - +#define EDGELOOP_EPS 0.00001f /* -------------------------------------------------------------------- */ /* BM_mesh_edgeloops_find & Util Functions */ @@ -580,7 +580,7 @@ void BM_edgeloop_calc_center(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store) } -void BM_edgeloop_calc_normal(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store) +bool BM_edgeloop_calc_normal(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store) { LinkData *node_curr = el_store->verts.first; float const *v_prev = NODE_AS_CO(el_store->verts.last); @@ -601,8 +601,13 @@ void BM_edgeloop_calc_normal(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store) } } while (true); - if (UNLIKELY(normalize_v3(el_store->no) == 0.0f)) { + if (UNLIKELY(normalize_v3(el_store->no) < EDGELOOP_EPS)) { el_store->no[2] = 1.0f; /* other axis set to 0.0 */ + return false; + + } + else { + return true; } } @@ -612,7 +617,7 @@ void BM_edgeloop_calc_normal(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store) * * Instead use an alignment vector and calculate the normal based on that. */ -void BM_edgeloop_calc_normal_aligned(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store, const float no_align[3]) +bool BM_edgeloop_calc_normal_aligned(BMesh *UNUSED(bm), BMEdgeLoopStore *el_store, const float no_align[3]) { LinkData *node_curr = el_store->verts.first; float const *v_prev = NODE_AS_CO(el_store->verts.last); @@ -637,8 +642,12 @@ void BM_edgeloop_calc_normal_aligned(BMesh *UNUSED(bm), BMEdgeLoopStore *el_stor } } while (true); - if (UNLIKELY(normalize_v3(el_store->no) == 0.0f)) { + if (UNLIKELY(normalize_v3(el_store->no) < EDGELOOP_EPS)) { el_store->no[2] = 1.0f; /* other axis set to 0.0 */ + return false; + } + else { + return true; } } diff --git a/source/blender/bmesh/intern/bmesh_edgeloop.h b/source/blender/bmesh/intern/bmesh_edgeloop.h index 70c30ec73bd..b46509d4030 100644 --- a/source/blender/bmesh/intern/bmesh_edgeloop.h +++ b/source/blender/bmesh/intern/bmesh_edgeloop.h @@ -58,8 +58,8 @@ const float *BM_edgeloop_normal_get(struct BMEdgeLoopStore *el_store); const float *BM_edgeloop_center_get(struct BMEdgeLoopStore *el_store); void BM_edgeloop_edges_get(struct BMEdgeLoopStore *el_store, BMEdge **e_arr); void BM_edgeloop_calc_center(BMesh *bm, struct BMEdgeLoopStore *el_store); -void BM_edgeloop_calc_normal(BMesh *bm, struct BMEdgeLoopStore *el_store); -void BM_edgeloop_calc_normal_aligned(BMesh *bm, struct BMEdgeLoopStore *el_store, +bool BM_edgeloop_calc_normal(BMesh *bm, struct BMEdgeLoopStore *el_store); +bool BM_edgeloop_calc_normal_aligned(BMesh *bm, struct BMEdgeLoopStore *el_store, const float no_align[3]); void BM_edgeloop_flip(BMesh *bm, struct BMEdgeLoopStore *el_store); void BM_edgeloop_expand(BMesh *bm, struct BMEdgeLoopStore *el_store, int el_store_len); diff --git a/source/blender/bmesh/operators/bmo_subdivide_edgering.c b/source/blender/bmesh/operators/bmo_subdivide_edgering.c index 7f08ad2461a..d9555c409f6 100644 --- a/source/blender/bmesh/operators/bmo_subdivide_edgering.c +++ b/source/blender/bmesh/operators/bmo_subdivide_edgering.c @@ -547,6 +547,7 @@ static void bm_edgering_pair_interpolate(BMesh *bm, LoopPairStore *lpair, { const int resolu = cuts + 2; const int dims = 3; + bool is_a_no_valid, is_b_no_valid; int i; float el_store_a_co[3], el_store_b_co[3]; @@ -559,20 +560,30 @@ static void bm_edgering_pair_interpolate(BMesh *bm, LoopPairStore *lpair, BM_edgeloop_calc_center(bm, el_store_a); BM_edgeloop_calc_center(bm, el_store_b); - BM_edgeloop_calc_normal(bm, el_store_a); - BM_edgeloop_calc_normal(bm, el_store_b); + is_a_no_valid = BM_edgeloop_calc_normal(bm, el_store_a); + is_b_no_valid = BM_edgeloop_calc_normal(bm, el_store_b); copy_v3_v3(el_store_a_co, BM_edgeloop_center_get(el_store_a)); copy_v3_v3(el_store_b_co, BM_edgeloop_center_get(el_store_b)); - copy_v3_v3(el_store_a_no, BM_edgeloop_normal_get(el_store_a)); - copy_v3_v3(el_store_b_no, BM_edgeloop_normal_get(el_store_b)); - /* correct normals need to be flipped to face each other * we know both normals point in the same direction so one will need flipping */ { float el_dir[3]; + float no[3]; sub_v3_v3v3(el_dir, el_store_a_co, el_store_b_co); + normalize_v3_v3(no, el_dir); + + if (is_a_no_valid == false) { + is_a_no_valid = BM_edgeloop_calc_normal_aligned(bm, el_store_a, no); + } + if (is_b_no_valid == false) { + is_b_no_valid = BM_edgeloop_calc_normal_aligned(bm, el_store_b, no); + } + (void)is_a_no_valid, (void)is_b_no_valid; + + copy_v3_v3(el_store_a_no, BM_edgeloop_normal_get(el_store_a)); + copy_v3_v3(el_store_b_no, BM_edgeloop_normal_get(el_store_b)); if (dot_v3v3(el_store_a_no, el_dir) > 0.0f) { negate_v3(el_store_a_no); |