3D View: support axis views with axis-aligned roll

Previously any of the named views could not have any roll,
this commit supports roll as long as it's axis-aligned (90,180,270 deg).

This is useful for snapping to views,
an improvement on cebd025e02f11.

1 files changed, 5 insertions, 3 deletions

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index cfeffae1052..a1bc3b028b6 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -622,9 +622,11 @@ void ED_view3d_update_viewmat(struct Depsgraph *depsgraph,
                               float winmat[4][4],
                               const struct rcti *rect,
                               bool offscreen);
-bool ED_view3d_quat_from_axis_view(const char view, float quat[4]);
-char ED_view3d_quat_to_axis_view(const float quat[4], const float epsilon);
-bool ED_view3d_quat_is_axis_aligned(const float viewquat[4]);
+bool ED_view3d_quat_from_axis_view(const char view, const char view_axis_roll, float quat[4]);
+bool ED_view3d_quat_to_axis_view(const float viewquat[4],
+                                 const float epsilon,
+                                 char *r_view,
+                                 char *r_view_axis_rotation);
 
 char ED_view3d_lock_view_from_index(int index);
 char ED_view3d_axis_view_opposite(char view);