* This is made up from a set of points that straight lines are drawn between.
*/
protected void addPolyline(Vector points, DrawingInstruction di,
boolean close) {
PDFNumber pdfNumber = new PDFNumber();
PathPoint pc;
float lastx = 0;
float lasty = 0;
Enumeration e = points.elements();
if (e.hasMoreElements()) {
pc = (PathPoint) e.nextElement();