Method toggle

librecad/src/lib/engine/rs_layer.cpp:105–108

* Toggles the visibility of this layer. * Freezes the layer if it's not frozen, thaws the layer otherwise */

 * Freezes the layer if it's not frozen, thaws the layer otherwise
 */
void RS_Layer::toggle() {
	//toggleFlag(RS2::FlagFrozen);
	data.frozen = !data.frozen;
}

/**
 * (De-)freezes this layer.