Started refactoring mesh data resource editor's gizmo.

game/addons/mesh_data_resource_editor/MIDGizmo.gd

@@ -1,6 +1,8 @@
 tool
 extends EditorSpatialGizmo
 
+var MeshOutline = preload("res://addons/mesh_data_resource_editor/utilities/mesh_outline.gd")
+
 enum EditMode {
 	NONE, TRANSLATE, SCALE, ROTATE
 }
@@ -13,10 +15,11 @@ enum AxisConstraint {
 
 var gizmo_size = 3.0
 
-var plugin
+var plugin : EditorPlugin
 
 var vertices : PoolVector3Array
 var indices : PoolIntArray
+
 var selected_indices : PoolIntArray
 var selected_vertices : PoolVector3Array
 var selected_vertices_original : PoolVector3Array
@@ -26,6 +29,11 @@ var axis_constraint = AxisConstraint.X | AxisConstraint.Y | AxisConstraint.Z
 var previous_point : Vector2
 var is_dragging : bool = false
 
+var _mesh_outline
+
+func _init():
+	_mesh_outline = MeshOutline.new()
+
 func set_handle(index: int, camera: Camera, point: Vector2):
 	var relative : Vector2 = point - previous_point
 	
@@ -105,28 +113,14 @@ func redraw():
 		return
 		
 	var handles_material : SpatialMaterial = get_plugin().get_material("handles", self)
+	var material = get_plugin().get_material("main", self)
+	
+	_mesh_outline.setup(mdr)
+	add_lines(_mesh_outline.lines, material, false)
 
 	if vertices.size() == 0:
 		vertices = mdr.array[ArrayMesh.ARRAY_VERTEX]
 	
-	var material = get_plugin().get_material("main", self)
-	var indices : PoolIntArray = mdr.array[ArrayMesh.ARRAY_INDEX]
-	
-	var lines : PoolVector3Array = PoolVector3Array()
-	
-	if indices.size() % 3 == 0:
-		for i in range(0, len(indices), 3):
-			lines.append(vertices[indices[i]])
-			lines.append(vertices[indices[i + 1]])
-			
-			lines.append(vertices[indices[i + 1]])
-			lines.append(vertices[indices[i + 2]])
-			
-			lines.append(vertices[indices[i + 2]])
-			lines.append(vertices[indices[i]])
-			
-	add_lines(lines, material, false)
-	
 	var vs : PoolVector3Array = PoolVector3Array()
 	
 	for i in selected_indices:

game/addons/mesh_data_resource_editor/utilities/mesh_add_utils.gd

@@ -1,3 +1,4 @@
+tool
 extends Object
 
 static func add_box(mdr : MeshDataResource) -> void:

game/addons/mesh_data_resource_editor/utilities/mesh_decompose.gd

@@ -0,0 +1,14 @@
+tool
+extends Object
+
+static func get_vertex_to_vertex_map() -> Array:
+	return Array()
+
+static func get_edge_to_vertex_map() -> Array:
+	return Array()
+	
+static func get_face_to_vertex_map() -> Array:
+	return Array()
+
+static func calculate_map_midpoints(mesh : Array, vertex_map : Array) -> PoolVector3Array:
+	return PoolVector3Array()

game/addons/mesh_data_resource_editor/utilities/mesh_outline.gd

@@ -0,0 +1,50 @@
+tool
+extends Reference
+
+var _mdr : MeshDataResource
+
+var lines : PoolVector3Array
+
+func setup(mdr : MeshDataResource) -> void:
+	if _mdr != null && _mdr == mdr:
+		return
+	
+	if _mdr:
+		_mdr.disconnect("changed", self, "refresh")
+	
+	_mdr = mdr
+	
+	if _mdr:
+		_mdr.connect("changed", self, "refresh")
+	
+	refresh()
+
+func refresh():
+	lines.resize(0)
+
+	if !_mdr:
+		return
+	
+	if _mdr.array.size() != ArrayMesh.ARRAY_MAX:
+		return
+	
+	if _mdr.array[ArrayMesh.ARRAY_VERTEX] == null || _mdr.array[ArrayMesh.ARRAY_INDEX] == null:
+		return
+	
+	var vertices : PoolVector3Array = _mdr.array[ArrayMesh.ARRAY_VERTEX]
+	var indices : PoolIntArray = _mdr.array[ArrayMesh.ARRAY_INDEX]
+	
+	if vertices.size() == 0:
+		vertices = _mdr.array[ArrayMesh.ARRAY_VERTEX]
+
+	if indices.size() % 3 == 0:
+		for i in range(0, len(indices), 3):
+			lines.append(vertices[indices[i]])
+			lines.append(vertices[indices[i + 1]])
+			
+			lines.append(vertices[indices[i + 1]])
+			lines.append(vertices[indices[i + 2]])
+			
+			lines.append(vertices[indices[i + 2]])
+			lines.append(vertices[indices[i]])
+