class TPolyLine: public TObject, public TAttLine, public TAttFill

 PolyLine default constructor.

 PolyLine normal constructor without initialisation.
 Allocates n points.  The option string is ignored.

 PolyLine normal constructor (single precision).
 Makes n points with (x, y) coordinates from x and y.
 The option string is ignored.

 PolyLine normal constructor (double precision).
 Makes n points with (x, y) coordinates from x and y.
 The option string is ignored.

assignment operator

 PolyLine default destructor.

 PolyLine copy constructor.

 Copy this polyline to polyline.

 Returns closest distance in pixels from point (px, py) to a polyline.

 First looks for distances to the points of the polyline.  Stops search
 and returns if a vertex of the polyline is found to be closer than 10
 pixels.  Thus the return value may depend on the ordering of points
 in the polyline.

 Then looks for distances to the lines of the polyline.  There is no
 arbitrary cutoff; any distance may be found.

 Finally checks whether (px, py) is inside a closed and filled polyline.
 (Must be EXACTLY closed.  "Filled" means fill color and fill style are
 both non-zero.) If so, returns zero.

 Returns 9999 if the polyline has no points.

 Draw this polyline with its current attributes.

 Draw this polyline with new coordinates.

 Execute action corresponding to one event.

  This member function is called when a polyline is clicked with the locator

  If Left button clicked on one of the line end points, this point
     follows the cursor until button is released.

  if Middle button clicked, the line is moved parallel to itself
     until the button is released.

 List this polyline with its attributes.
 The option string is ignored.

 Merge polylines in the collection in this polyline

 Paint this polyline with its current attributes.

 Draw this polyline with new coordinates.

  If option = 'f' or 'F' the fill area is drawn.
  The default is to draw the lines only.

 Draw this polyline with new coordinates in NDC.

 Dump this polyline with its attributes.
 The option string is ignored.

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

 Set NDC mode on if isNDC = kTRUE, off otherwise

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

 Set point number n to (x, y)
 If n is greater than the current size, the arrays are automatically
 extended.

 Resize this polyline to size n.
 If n <= 0 the current arrays of points are deleted.
 If n is greater than the current size, the new points are set to (0, 0)

 Set new values for this polyline (single precision).

 If n <= 0 the current arrays of points are deleted.

 Set new values for this polyline (double precision).

 If n <= 0 the current arrays of points are deleted.

 Stream a class object.