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Knife: cuts along existing edges are now selected 

This means cuts along existing edges don't have gaps in the selection.

Fixes T42616
This commit is contained in:
Campbell Barton 2014-11-19 02:38:06 +01:00
parent 2efc3211ab
commit 6fb1e1680b
Notes: blender-bot 2023-02-14 09:49:31 +01:00 
Referenced by issue #42616, knife hi res error
1 changed files with 20 additions and 1 deletions
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21
source/blender/editors/mesh/editmesh_knife.c
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@ -683,6 +683,7 @@ static void add_hit_to_facehits(KnifeTool_OpData *kcd, GHash *facehits, BMFace *
static void knife_add_single_cut(KnifeTool_OpData *kcd, KnifeLineHit *lh1, KnifeLineHit *lh2, BMFace *f)
{
KnifeEdge *kfe, *kfe2;
BMEdge *e_base;
if ((lh1->v && lh1->v == lh2->v) ||
(lh1->kfe && lh1->kfe == lh2->kfe))
@ -690,8 +691,18 @@ static void knife_add_single_cut(KnifeTool_OpData *kcd, KnifeLineHit *lh1, Knife
return;
}
/* if the cut is on an edge, just tag that its a cut and return */
if ((lh1->v && lh2->v) &&
(lh1->v->v && lh2->v && lh2->v->v) &&
(e_base = BM_edge_exists(lh1->v->v, lh2->v->v)))
{
kfe = get_bm_knife_edge(kcd, e_base);
kfe->is_cut = true;
kfe->e = e_base;
return;
}
/* Check if edge actually lies within face (might not, if this face is concave) */
if ((lh1->v && !lh1->kfe) && (lh2->v && !lh2->kfe)) {
else if ((lh1->v && !lh1->kfe) && (lh2->v && !lh2->kfe)) {
if (!knife_verts_edge_in_face(lh1->v, lh2->v, f)) {
return;
}
@ -2615,6 +2626,14 @@ static void knife_make_cuts(KnifeTool_OpData *kcd)
/* put list of cutting edges for a face into fhash, keyed by face */
BLI_mempool_iternew(kcd->kedges, &iter);
for (kfe = BLI_mempool_iterstep(&iter); kfe; kfe = BLI_mempool_iterstep(&iter)) {
/* select edges that lie directly on the cut */
if (kcd->select_result) {
if (kfe->e && kfe->is_cut) {
BM_edge_select_set(bm, kfe->e, true);
}
}
f = kfe->basef;
if (!f || kfe->e)
continue;