class TPolyLine3D: public TObject, public TAttLine, public TAtt3D

 3-D polyline default constructor.

 3-D polyline normal constructor with initialization to 0.
 If n < 0 the default size (2 points) is set.

 3-D polyline normal constructor. Polyline is intialized with p.
 If n < 0 the default size (2 points) is set.

 3-D polyline normal constructor. Polyline is initialized with p
 (cast to float). If n < 0 the default size (2 points) is set.

 3-D polyline normal constructor. Polyline is initialized withe the
 x, y ,z arrays. If n < 0 the default size (2 points) is set.

 3-D polyline normal constructor. Polyline is initialized withe the
 x, y, z arrays (which are cast to float).
 If n < 0 the default size (2 points) is set.

assignement operator

 3-D polyline destructor.

 3-D polyline copy ctor.

 Copy polyline to polyline obj.

 Compute distance from point px,py to a 3-D polyline.
 Compute the closest distance of approach from point px,py to each segment
 of the polyline.
 Returns when the distance found is below DistanceMaximum.
 The distance is computed in pixels units.

 Draw this 3-D polyline with its current attributes.

 Draw cube outline with 3d polylines.

      xmin = fRmin[0]        xmax = fRmax[0]
      ymin = fRmin[1]        ymax = fRmax[1]
      zmin = fRmin[2]        zmax = fRmax[2]


    (xmin,ymax,zmax) +---------+ (xmax,ymax,zmax)
                    /         /|
                   /         / |
                  /         /  |
(xmin,ymin,zmax) +---------+   |
                 |         |   + (xmax,ymax,zmin)


                 |         |
                 +---------+
  (xmin,ymin,zmin)         (xmax,ymin,zmin)

 Draw 3-D polyline with new coordinates. Creates a new polyline which
 will be adopted by the pad in which it is drawn. Does not change the
 original polyline (should be static method).

 Execute action corresponding to one event.

 List this 3-D polyline.

 Merge polylines in the collection in this polyline

 Paint a TPolyLine3D.

 Dump this 3-D polyline with its attributes on stdout.

 Save primitive as a C++ statement(s) on output stream.

 Set point following LastPoint to x, y, z.
 Returns index of the point (new last point).

 Set point n to x, y, z.
 If n is more then the current TPolyLine3D size (n > fN) then
 the polyline will be resized to contain at least n points.

 Re-initialize polyline with n points (0,0,0).
 if n <= 0 the current array of points is deleted.

 Re-initialize polyline with n points from p. If p=0 initialize with 0.
 if n <= 0 the current array of points is deleted.

 Re-initialize polyline with n points from p. If p=0 initialize with 0.
 if n <= 0 the current array of points is deleted.

 Stream a 3-D polyline object.