Fix T41085: Blender crashes when using "spline" or "segments" for bevel curve factor.

Root of the issue goes to the fact that bevel list calculation might drop some points
if they're at the same position. This made spline length calculation goes wrong.

Now the length of the bevel segments is stored in the bevel list, so values are
always reliable.

Initial patch by Lukas Treyer with some tweaks from me.

1 files changed, 3 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_curve_types.h b/source/blender/makesdna/DNA_curve_types.h
index 16d85ab4d3b..87496fb491f 100644
--- a/source/blender/makesdna/DNA_curve_types.h
+++ b/source/blender/makesdna/DNA_curve_types.h
@@ -72,7 +72,7 @@ typedef struct Path {
 #
 #
 typedef struct BevPoint {
-	float vec[3], alfa, radius, weight;
+	float vec[3], alfa, radius, weight, offset;
 	float sina, cosa;				/* 2D Only */
 	float dir[3], tan[3], quat[4];	/* 3D Only */
 	short split_tag, dupe_tag;
@@ -86,6 +86,8 @@ typedef struct BevList {
 	int nr, dupe_nr;
 	int poly, hole;
 	int charidx;
+	int *segbevcount;
+	float *seglen;
 
 	/* over-alloc */
 	BevPoint bevpoints[0];