Fix T83092: Direction of rotation with View orientation changed in 2.91

The change was intentional so that the orientation matrices match
(`rv3d->viewinv` becomes equal to the orientation matrix).

But, although in a projection matrix the Z axis is negative, this
should not be so from the user's point of view.

So the solution here is to negate the Z axis when the View orientation
is chosen.

This affects all modes, but is only evident for rotation.

---
Another change here is to use the final rotation value (`values_final`)
for the gizmo drawing since this value can be changed by the mode.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/transform/transform_gizmo_3d.c b/source/blender/editors/transform/transform_gizmo_3d.c
index d5c6ea2dfdd..37fd8bb63c1 100644
--- a/source/blender/editors/transform/transform_gizmo_3d.c
+++ b/source/blender/editors/transform/transform_gizmo_3d.c
@@ -1331,7 +1331,7 @@ void drawDial3d(const TransInfo *t)
     }
     else {
       axis_idx = MAN_AXIS_ROT_C;
-      copy_v3_v3(mat_basis[2], t->spacemtx[t->orient_axis]);
+      negate_v3_v3(mat_basis[2], t->spacemtx[t->orient_axis]);
       scale *= 1.2f;
       line_with -= 1.0f;
     }
@@ -1379,7 +1379,7 @@ void drawDial3d(const TransInfo *t)
                                     false,
                                     &(struct Dial3dParams){
                                         .draw_options = ED_GIZMO_DIAL_DRAW_FLAG_ANGLE_VALUE,
-                                        .angle_delta = t->values[0],
+                                        .angle_delta = t->values_final[0],
                                         .angle_increment = increment,
                                     });