protected void PlugIn_NeedsGrid(PainterBoolPlugin d)
 {
     pluginNeedsGrid_Delegates += d;
     GridNavigator.pluginNeedsGrid_Delegates += d;
 }
 protected void PlugIn_PainterGizmos(PainterBoolPlugin d)
 {
     plugins_GizmoDraw += d;
     PlaytimePainter.plugins_GizmoDraw += d;
 }