Joint class
§Represents a joint in the wall
system
§Can be accessed from the Graph
class
§Enables access to collection of
all connections on a joint
§Contains property to access the
X and Y coordinates and radius of a joint
§Can be used to check if a point
is contained in a joint
§Enables access to next left and
right connection from a joint
Connection class
§Represents a connection class in a wall system
§Wall connection is a part of collection of
connections at any wall
joint
§Can be used to access the joint
and section of a
connection
§Provides access to the direction
vector of the wall
graph
§Provides start and end elevation information