[Bf-blender-cvs] [5f1a155a5ef] master: Fix T83117: Curve bevel not handle aligned at end-points
Campbell Barton
noreply at git.blender.org
Tue Dec 8 02:28:10 CET 2020
Commit: 5f1a155a5ef39a4db144b38a607c19b763f965a3
Author: Campbell Barton
Date: Tue Dec 8 12:14:27 2020 +1100
Branches: master
https://developer.blender.org/rB5f1a155a5ef39a4db144b38a607c19b763f965a3
Fix T83117: Curve bevel not handle aligned at end-points
Caused by fix for T80742, 4987b7d347a885916916a888c18401ea2fe552f4.
Keep the fix that calculates the start/end direction
from adjacent points but only use it as a fallback.
===================================================================
M source/blender/blenkernel/intern/curve.c
===================================================================
diff --git a/source/blender/blenkernel/intern/curve.c b/source/blender/blenkernel/intern/curve.c
index 2df9f362b9c..ebce28c4e23 100644
--- a/source/blender/blenkernel/intern/curve.c
+++ b/source/blender/blenkernel/intern/curve.c
@@ -2185,19 +2185,28 @@ static void bevel_list_calc_bisect(BevList *bl)
bevp2++;
}
+ /* In the unlikely situation that handles define a zeroed direction,
+ * calculate it from the adjacent points, see T80742.
+ *
+ * Only do this as a fallback since we typically want the end-point directions
+ * to be exactly aligned with the handles at the end-point, see T83117. */
if (is_cyclic == false) {
bevp0 = &bl->bevpoints[0];
bevp1 = &bl->bevpoints[1];
- sub_v3_v3v3(bevp0->dir, bevp1->vec, bevp0->vec);
- if (normalize_v3(bevp0->dir) == 0.0f) {
- copy_v3_v3(bevp0->dir, bevp1->dir);
+ if (UNLIKELY(is_zero_v3(bevp0->dir))) {
+ sub_v3_v3v3(bevp0->dir, bevp1->vec, bevp0->vec);
+ if (normalize_v3(bevp0->dir) == 0.0f) {
+ copy_v3_v3(bevp0->dir, bevp1->dir);
+ }
}
bevp0 = &bl->bevpoints[bl->nr - 2];
bevp1 = &bl->bevpoints[bl->nr - 1];
- sub_v3_v3v3(bevp1->dir, bevp1->vec, bevp0->vec);
- if (normalize_v3(bevp1->dir) == 0.0f) {
- copy_v3_v3(bevp1->dir, bevp0->dir);
+ if (UNLIKELY(is_zero_v3(bevp1->dir))) {
+ sub_v3_v3v3(bevp1->dir, bevp1->vec, bevp0->vec);
+ if (normalize_v3(bevp1->dir) == 0.0f) {
+ copy_v3_v3(bevp1->dir, bevp0->dir);
+ }
}
}
}
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