svoid fillPolygon(Graphics2D g, L<Pt> points, Color color) {
  g.setColor(color);
  g.fillPolygon(pointsX(points), pointsY(points), l(points));
}

svoid fillPolygon(BufferedImage image, L<Pt> points, Color color) {
  fillPolygon(imageGraphics(image), points, color);
}