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2023/01/31

Create numbers for a 7-segment digital clock using Path2D

Code

class DigitalNumber {
  private final double isosceles;
  private final double dx;
  private final double dy;
  private final double width;
  private final double height;
  private final Rectangle rect = new Rectangle();
  public static final Color OFF = new Color(0xCC_CC_CC);
  public static final Color ON = Color.DARK_GRAY;
  public static final Color BGC = Color.LIGHT_GRAY;
  private final List<Set<Seg>> numbers = Arrays.asList(
      EnumSet.of(Seg.A, Seg.B, Seg.C, Seg.D, Seg.E, Seg.F),
      EnumSet.of(Seg.B, Seg.C),
      EnumSet.of(Seg.A, Seg.B, Seg.D, Seg.E, Seg.G),
      EnumSet.of(Seg.A, Seg.B, Seg.C, Seg.D, Seg.G),
      EnumSet.of(Seg.B, Seg.C, Seg.F, Seg.G),
      EnumSet.of(Seg.A, Seg.C, Seg.D, Seg.F, Seg.G),
      EnumSet.of(Seg.A, Seg.C, Seg.D, Seg.E, Seg.F, Seg.G),
      EnumSet.of(Seg.A, Seg.B, Seg.C),
      EnumSet.of(Seg.A, Seg.B, Seg.C, Seg.D, Seg.E, Seg.F, Seg.G),
      EnumSet.of(Seg.A, Seg.B, Seg.C, Seg.D, Seg.F, Seg.G));
  private Set<Seg> led = EnumSet.noneOf(Seg.class);

  protected DigitalNumber(double dx, double dy, double isosceles) {
    this.isosceles = isosceles;
    this.dx = dx;
    this.dy = dy;
    this.width = 2d * isosceles;
    this.height = width + isosceles;
    rect.setLocation((int) dx, (int) dy);
    rect.setSize((int) (width + 3 * isosceles), (int) (height * 2));
  }

  public Rectangle getBounds() {
    return rect;
  }

  public void setNumber(int num) {
    led = numbers.get(num);
  }

  public void turnOffNumber() {
    led.clear();
  }

  public void drawNumber(Graphics2D g2) {
    EnumSet.allOf(Seg.class).forEach(s -> {
      g2.setColor(led.contains(s) ? ON : OFF);
      Shape seg = s.getShape(dx, dy, width, height, isosceles);
      g2.fill(seg);
      g2.setColor(BGC);
      g2.draw(seg);
    });
  }
}

enum Seg { A, B, C, D, E, F, G }

References