[Bf-blender-cvs] [f2f3ef8] master: Fix Knife bug T39617: midpoint snap should affect intermediate points.

[Howard Trickey]

Commit: f2f3ef869237116cea90b8cd0bdaddc43c7f0af3
Author: Howard Trickey
Date:   Wed Apr 16 14:17:30 2014 -0400
https://developer.blender.org/rBf2f3ef869237116cea90b8cd0bdaddc43c7f0af3

Fix Knife bug T39617: midpoint snap should affect intermediate points.

This reverts to the 2.69 behavior, where the snap-to-midpoint option
affected the intermediate crossed edges as well as the endpoints.

===================================================================

M	source/blender/editors/mesh/editmesh_knife.c

===================================================================

diff --git a/source/blender/editors/mesh/editmesh_knife.c b/source/blender/editors/mesh/editmesh_knife.c
index 1fcff82..d973523 100644
--- a/source/blender/editors/mesh/editmesh_knife.c
+++ b/source/blender/editors/mesh/editmesh_knife.c
@@ -1395,6 +1395,12 @@ static void knife_find_line_hits(KnifeTool_OpData *kcd)
 				isect_kind = isect_line_line_v3(kfe->v1->cageco, kfe->v2->cageco, r1, r2, p, p2);
 				if (isect_kind >= 1 && point_is_visible(kcd, p, sint, &mats)) {
 					memset(&hit, 0, sizeof(hit));
+					if (kcd->snap_midpoints) {
+						/* choose intermediate point snap too */
+						mid_v3_v3v3(p, kfe->v1->cageco, kfe->v2->cageco);
+						mid_v2_v2v2(sint, se1, se2);
+						lambda = 0.5f;
+					}
 					hit.kfe = kfe;
 					copy_v3_v3(hit.hit, p);
 					copy_v3_v3(hit.cagehit, p);