Fix "Fully Axis-Locked" Freelook Navigation Scheme

Co-authored-by: Aaron Franke <[email protected]>
(cherry picked from commit 29e901c3420fc823fddebd3f8b885e8a816debe3)

editor/plugins/spatial_editor_plugin.cpp

@@ -2123,10 +2123,7 @@ void SpatialEditorViewport::_nav_orbit(Ref<InputEventWithModifiers> p_event, con
 		cursor.x_rot += p_relative.y * radians_per_pixel;
 	}
 	cursor.y_rot += p_relative.x * radians_per_pixel;
-	if (cursor.x_rot > Math_PI / 2.0)
-		cursor.x_rot = Math_PI / 2.0;
-	if (cursor.x_rot < -Math_PI / 2.0)
-		cursor.x_rot = -Math_PI / 2.0;
+	cursor.x_rot = CLAMP(cursor.x_rot, -1.57, 1.57);
 	name = "";
 	_update_name();
 }
@@ -2155,10 +2152,7 @@ void SpatialEditorViewport::_nav_look(Ref<InputEventWithModifiers> p_event, cons
 		cursor.x_rot += p_relative.y * radians_per_pixel;
 	}
 	cursor.y_rot += p_relative.x * radians_per_pixel;
-	if (cursor.x_rot > Math_PI / 2.0)
-		cursor.x_rot = Math_PI / 2.0;
-	if (cursor.x_rot < -Math_PI / 2.0)
-		cursor.x_rot = -Math_PI / 2.0;
+	cursor.x_rot = CLAMP(cursor.x_rot, -1.57, 1.57);
 
 	// Look is like the opposite of Orbit: the focus point rotates around the camera
 	Transform camera_transform = to_camera_transform(cursor);