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	Class	Description
	Engine3DError	Base class for 3D-engine errors.
	FaceExistsError	An error appearing when trying to add a face to an object, which already contains that face.
	FaceNeedMoreVerticesError	On error, occuring when there is not enough vertices to create face.
	FaceNotFoundError	An error occured when face is not found in object.
	InvalidIDError	An error meaning that identifier is reserved and cannot be used.
	Object3DHierarchyError	An error, connected with objects' hierarchy problems.
	Object3DNotFoundError	An error occuring when there is no object where expected.
	ObjectExistsError	An error meaning that the object is already present in container.
	ObjectNotFoundError	The object was not found in a container.
	SurfaceExistsError	An error meaning that surface is already present in container.
	SurfaceNotFoundError	An error meaning that surface is not found in container.
	VertexExistsError	An error meaning that vertex is already present in object.
	VertexNotFoundError	An error meaning that vertex is not found in object.