Door grid types

Variables
const int	Renga::GridTypes::Door::Undefined = 0
	Undefined.
const int	Renga::GridTypes::Door::Frame = 1
	Faces of a frame for fillers with glass.
const int	Renga::GridTypes::Door::Solid = 2
	Faces of solid fillers.
const int	Renga::GridTypes::Door::Glass = 3
	Faces of a glass pane.
const int	Renga::GridTypes::Door::Reveal = 4
	Faces of a wall appearing as a result of a window insertion.
const int	Renga::GridTypes::Door::DoorLining = 5
	Faces of a door lining.
const int	Renga::GridTypes::Door::Threshold = 6
	Faces of a door threshold.
const int	Renga::GridTypes::Door::Platband = 7
	Faces of a door platband.

Possible grid types for a Door mesh