37     Node* getNext() 
const;
    41     void setNext( 
Node* n );
 Node is a class used by Line3D. 
 
Point3D is a class to represent a three dimensional point. 
 
Point3D * getPoint() const
Returns a pointer to the Point3D object associated with the node. 
 
Node * getNext() const
Returns a pointer to the next element in the linked list. 
 
void setPoint(Point3D *p)
Sets a new pointer to an associated Point3D object. 
 
void setNext(Node *n)
Sets the pointer to the next node. 
 
Node * mNext
Pointer to the next Node in the linked list. 
 
Point3D * mPoint
Pointer to the Point3D object associated with the node.