NDOF: define 2 default navigation modes: free & orbit

After some discussion it seems both are valid defaults but useful for
very different purposes.

- 'free' lets you explore the scene with full 6dof (like fly mode)
- 'orbit' is closer to typical mouse view orbit, constraining to orbiting about a central location.

This doesn't effect orbit/pan which are available with modifier keys.

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_view3d.h b/source/blender/editors/include/ED_view3d.h
index 8fce5e7e7c0..a42b352ad51 100644
--- a/source/blender/editors/include/ED_view3d.h
+++ b/source/blender/editors/include/ED_view3d.h
@@ -335,6 +335,7 @@ void ED_view3D_background_image_clear(struct View3D *v3d);
 #define VIEW3D_MARGIN 1.4f
 #define VIEW3D_DIST_FALLBACK 1.0f
 float ED_view3d_offset_distance(float mat[4][4], const float ofs[3], const float dist_fallback);
+void  ED_view3d_distance_set(struct RegionView3D *rv3d, const float dist);
 
 float ED_scene_grid_scale(struct Scene *scene, const char **grid_unit);
 float ED_view3d_grid_scale(struct Scene *scene, struct View3D *v3d, const char **grid_unit);