Fix T45402: Transform crash w/ project+align snap

Only euler rotations were checked for.
Also delta rotations caused random/unusable output.

1 files changed, 1 insertions, 19 deletions

diff --git a/source/blender/editors/transform/transform_snap.c b/source/blender/editors/transform/transform_snap.c
index e86b11f1df3..99d9836014c 100644
--- a/source/blender/editors/transform/transform_snap.c
+++ b/source/blender/editors/transform/transform_snap.c
@@ -343,31 +343,13 @@ void applyProject(TransInfo *t)
 						/* handle alignment as well */
 						const float *original_normal;
 						float mat[3][3];
-						float totmat[3][3], smat[3][3];
-						float eul[3], fmat[3][3];
-						float obmat[3][3];
 
 						/* In pose mode, we want to align normals with Y axis of bones... */
 						original_normal = td->axismtx[2];
 
 						rotation_between_vecs_to_mat3(mat, original_normal, no);
 
-						mul_m3_m3m3(totmat, mat, td->mtx);
-						mul_m3_m3m3(smat, td->smtx, totmat);
-
-						/* calculate the total rotatation in eulers */
-						add_v3_v3v3(eul, td->ext->irot, td->ext->drot); /* we have to correct for delta rot */
-						eulO_to_mat3(obmat, eul, td->ext->rotOrder);
-						/* mat = transform, obmat = object rotation */
-						mul_m3_m3m3(fmat, smat, obmat);
-
-						mat3_to_compatible_eulO(eul, td->ext->rot, td->ext->rotOrder, fmat);
-
-						/* correct back for delta rot */
-						sub_v3_v3v3(eul, eul, td->ext->drot);
-
-						/* and apply */
-						copy_v3_v3(td->ext->rot, eul);
+						transform_data_ext_rotate(td, mat, true);
 
 						/* TODO support constraints for rotation too? see ElementRotation */
 					}