Пример #1
0
  /** Standard override -- draws all the dots. */
  public void paintComponent(Graphics g) {
    // As a JPanel subclass we need call super.paintComponent()
    // so JPanel will draw the white background for us.
    super.paintComponent(g);
    Color origColor = g.getColor();
    for (Line l : lines) {
      if (l.isPencil()) {
        g.setColor(Color.RED);
      } else {
        g.setColor(Color.BLACK);
      }
      g.drawLine((int) l.getX1(), (int) l.getY1(), (int) l.getX2(), (int) l.getY2());
    }
    g.setColor(origColor);

    // Go through all the dots, drawing a circle for each
    for (ManModel dotModel : dots) {
      // g.drawImage(img, dotModel.getX() - MAN_WIDTH/2, dotModel.getY() - MAN_HEIGHT/2, MAN_WIDTH,
      // MAN_HEIGHT, null);
      g.drawImage(
          img,
          dotModel.getX() - Constants.MAN_WIDTH / 2,
          dotModel.getY() - Constants.MAN_HEIGHT / 2,
          null);
    }

    numberMen.setText("" + dots.size());

    // Draw the "requested" clip rect in red
    // (this just shows off smart-repaint)
    if (redPaint) {
      Rectangle clip = g.getClipBounds();
      if (clip != null) {
        g.setColor(Color.red);
        g.drawRect(clip.x, clip.y, clip.width - 1, clip.height - 1);
        g.setColor(origColor);
      }
    }

    g.setColor(Color.RED);
    for (Line l : circles) {
      g.drawLine((int) l.getX1(), (int) l.getY1(), (int) l.getX2(), (int) l.getY2());
    }

    for (Arc l : arcs) {
      g.drawArc(
          (int) l.getX1(),
          (int) l.getY1(),
          (int) l.getWidth(),
          (int) l.getHeight(),
          (int) l.getStartAngle(),
          (int) l.getSweep());
      // g.drawArc((int) l.getX1(), (int) l.getY1(), (int) l.getWidth()+1, (int) l.getHeight()+1,
      // l.getStartAngle()-1, l.getSweep());

    }
    g.setColor(Color.BLACK);
  }
 public static boolean linesIntersect(Line line1, Line line2) {
   if (!(line1.equals(line2))) {
     double x1 = line1.getX1();
     double y1 = line1.getY1();
     double x2 = line1.getX2();
     double y2 = line1.getY2();
     double x3 = line2.getX1();
     double y3 = line2.getY1();
     double x4 = line2.getX2();
     double y4 = line2.getY2();
     return Line2D.linesIntersect(x1, y1, x2, y2, x3, y3, x4, y4);
   } else {
     return false;
   }
 }
 public static String printLine(Line segment) {
   return String.format(
       "(%.1f, %.1f) to (%.1f, %.1f)",
       segment.getX1(), segment.getY1(), segment.getX2(), segment.getY2());
 }