Commit: b0531227d40e2b4c147367fe87e311efd92de80d
Author: Bastien Montagne
Date: Wed Jul 31 16:12:33 2019 +0200
Branches: master
https://developer.blender.org/rBb0531227d40e2b4c147367fe87e311efd92de80d
Fix T68001: Rotating vertices on the UV map by a fixed number immediately
crashes Blender.
Spaghetti Transform code can use same code for different kind of data.
The 'stepped rotation' process is actually only useful/doable in a few
cases (when we do have some real place to store rotation value, and we
are using Eulers).
===================================================================
M source/blender/editors/transform/transform.c
===================================================================
diff --git a/source/blender/editors/transform/transform.c
b/source/blender/editors/transform/transform.c
index d8dd6aa97b5..17cbc9b0551 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -4640,8 +4640,13 @@ static void applyRotationValue(TransInfo *t,
* Note that this is only needed when doing 'absolute' rotation
* (i.e. from initial rotation again, typically when using numinput).
* regular incremental rotation (from mouse/widget/...) will be called
often enough,
- * hence steps are small enough to be properly handled without that
complicated trick. */
- if (is_large_rotation) {
+ * hence steps are small enough to be properly handled without that
complicated trick.
+ * Note that we can only do that kind of stepped rotation if we have
initial rotation values
+ * (and access to some actual rotation value storage).
+ * Otherwise, just assume it's useless (e.g. in case of mesh/UV/etc.
editing).
+ * Also need to be in Euler rotation mode, the others never allow more
than one turn anyway.
+ */
+ if (is_large_rotation && td->ext != NULL && td->ext->rotOrder ==
ROT_MODE_EUL) {
copy_v3_v3(td->ext->rot, td->ext->irot);
for (float angle_progress = angle_step; fabsf(angle_progress) <
fabsf(angle_final);
angle_progress += angle_step) {
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