static void DrawSelectedNode() { if (curNodeEditorState.SelectedNode == null) { return; } var nodeRect = curNodeEditorState.SelectedNode.nodeRect; EffectUtility.DrawLineA(Color.yellow, nodeRect.position, nodeRect.position + new Vector2(nodeRect.size.x, 0), nodeRect.position + new Vector2(nodeRect.size.x, nodeRect.size.y), nodeRect.position + new Vector2(0, nodeRect.size.y), nodeRect.position ); }