docs: public static void drawPolygon( Polygon2D_F64 polygon, boolean loop, Graphics2D g2 ) {
  		for( int i = 0; i < polygon.size()-1; i++ ) {
  			Point2D_F64 p0 = polygon.get(i);
  			Point2D_F64 p1 = polygon.get(i+1);
  			g2.drawLine((int)(p0.x+0.5),(int)(p0.y+0.5),(int)(p1.x+0.5),(int)(p1.y+0.5));
  		}
  		if( loop && polygon.size() > 0) {
  			Point2D_F64 p0 = polygon.get(0);
  			Point2D_F64 p1 = polygon.get(polygon.size()-1);
  			g2.drawLine((int)(p0.x+0.5),(int)(p0.y+0.5),(int)(p1.x+0.5),(int)(p1.y+0.5));
  		}
  	}