From c4bbe44e472b97911127ce354954ff7e9e290a3d Mon Sep 17 00:00:00 2001 From: Campbell Barton Date: Sat, 16 Jan 2021 11:29:56 +1100 Subject: Add Object Tool: workaround non-orthogonal orientation matrices --- source/blender/editors/space_view3d/view3d_placement.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'source/blender/editors/space_view3d/view3d_placement.c') diff --git a/source/blender/editors/space_view3d/view3d_placement.c b/source/blender/editors/space_view3d/view3d_placement.c index 638c61fc331..5bd1b3458e2 100644 --- a/source/blender/editors/space_view3d/view3d_placement.c +++ b/source/blender/editors/space_view3d/view3d_placement.c @@ -795,6 +795,12 @@ static void view3d_interactive_add_calc_plane(bContext *C, const RegionView3D *rv3d = region->regiondata; ED_transform_calc_orientation_from_type(C, r_matrix_orient); + /* Non-orthogonal matrices cause the preview and final result not to match. + * + * While making orthogonal doesn't always work well (especially with gimbal orientation for e.g.) + * it's a corner case, without better alternatives as objects don't support shear. */ + orthogonalize_m3(r_matrix_orient, plane_axis); + SnapObjectContext *snap_context = NULL; bool snap_context_free = false; -- cgit v1.2.3