Swing/ClockWithArabicOrRomanNumerals のバックアップ(No.7)

private void paintClockNumbers(Graphics2D g2, float radius, float hourMarkerLen) {
  AffineTransform at = AffineTransform.getRotateInstance(0d);
  g2.setColor(Color.WHITE);
  Font font = g2.getFont();
  FontRenderContext frc = g2.getFontRenderContext();
  if (isRomanNumerals) {
    for (String txt : romanNumerals) {
      Shape s = getOutline(txt, font, frc);
      Rectangle2D r = s.getBounds2D();
      double tx = r.getCenterX();
      double ty = radius - hourMarkerLen - r.getHeight() + r.getCenterY();
      Shape t = AffineTransform.getTranslateInstance(-tx, -ty).createTransformedShape(s);
      g2.fill(at.createTransformedShape(t));
      at.rotate(Math.PI / 6d);
    }
  } else {
    Point2D ptSrc = new Point2D.Double();
    for (String txt : arabicNumerals) {
      Shape s = getOutline(txt, font, frc);
      Rectangle2D r = s.getBounds2D();
      double ty = radius - hourMarkerLen - r.getHeight();
      ptSrc.setLocation(0d, -ty);
      Point2D pt = at.transform(ptSrc, null);
      double dx = pt.getX() - r.getCenterX();
      double dy = pt.getY() - r.getCenterY();
      // g2.drawString(txt, (float) dx, (float) dy);
      g2.fill(AffineTransform.getTranslateInstance(dx, dy).createTransformedShape(s));
      at.rotate(Math.PI / 6d);
    }
  }
}

private static Shape getOutline(String txt, Font font, FontRenderContext frc) {
  return new TextLayout(txt, font, frc).getOutline(null);
}