Improve the gizmo axis colors and increase the manipulator opacity

The new colors should make it easier to see the manipulator gizmo.
Highlighted gizmos are now fully opaque (instead of being white),
keeping the color information while a gizmo is highlighted.

This also adds a setting hint for the manipulator gizmo opacity
editor setting.

Axis colors were taken from Blender 2.80.

This partially addresses #16154.

1 files changed, 3 insertions, 1 deletions

diff --git a/editor/plugins/spatial_editor_plugin.h b/editor/plugins/spatial_editor_plugin.h
index dde402c0ff..523573333b 100644
--- a/editor/plugins/spatial_editor_plugin.h
+++ b/editor/plugins/spatial_editor_plugin.h
@@ -528,7 +528,8 @@ private:
 	Ref<ArrayMesh> move_gizmo[3], move_plane_gizmo[3], rotate_gizmo[3], scale_gizmo[3], scale_plane_gizmo[3];
 	Ref<SpatialMaterial> gizmo_color[3];
 	Ref<SpatialMaterial> plane_gizmo_color[3];
-	Ref<SpatialMaterial> gizmo_hl;
+	Ref<SpatialMaterial> gizmo_color_hl[3];
+	Ref<SpatialMaterial> plane_gizmo_color_hl[3];
 
 	int over_gizmo_handle;
 
@@ -635,6 +636,7 @@ private:
 	Node *custom_camera;
 
 	Object *_get_editor_data(Object *p_what);
+	Color _get_axis_color(int axis);
 
 	Ref<Environment> viewport_environment;