画圆的刻度代码

来源：互联网发布：海澜之家淘宝编辑：程序博客网时间：2024/04/29 12:02
  public void paintComponent(Graphics g) {
            //确保父类完成自己的绘制工作 
            super.paintComponent(g);
            Graphics2D g2 = (Graphics2D) g;
            //定义变量 
            double X = 200.00, Y = 200.00, R = 150, Len, x1, x2, y1, y2, Rad;
            //表盘 
            g2.setPaint(Color.BLUE);
            Ellipse2D circle = new Ellipse2D.Double();
            circle.setFrameFromCenter(X, Y, X + R, Y + R);
            g2.draw(circle);
            //刻度 
            g2.setPaint(Color.RED);
            for (int i = 1; i <= 60; i++) {
                Rad = Math.toRadians(6* i);
                if (i % 5 == 0) {
                    Len = 15;
                } else {
                    Len = 5;
                }
                x1 = X + R * Math.cos(Rad);
                x2 = x1 - Len * Math.cos(Rad);
                y1 = Y + R * Math.sin(Rad);
                y2 = y1 - Len * Math.sin(Rad);
                System.out.println(x1+","+x2+","+y1+","+y2);
                g2.draw(new Line2D.Double(x1, y1, x2, y2));
            }
            //获取系统当前时间 
            Date dt = new Date(5);
            DateFormat df = new SimpleDateFormat("yy-MM-dd HH:mm:ss");
            String NowTime = df.format(dt);
            //指针 
            int hh = Integer.parseInt(NowTime.substring(9, 11));
            int mm = Integer.parseInt(NowTime.substring(12, 14));
            if (hh > 12) {
                hh = hh - 12;
            }
            int ss = Integer.parseInt(NowTime.substring(15, 17));
            //时针 
            g2.setPaint(Color.GREEN);
            Rad = Math.toRadians(30 * hh - 90 + mm / 2);
            Len = 0.6 * R;
            x2 = X + Len * Math.cos(Rad);
            y2 = Y + Len * Math.sin(Rad);
            g2.draw(new Line2D.Double(X, Y, x2, y2));
            //分针 
            g2.setPaint(Color.BLUE);
            Rad = Math.toRadians(6 * mm - 90);
            Len = 0.8 * R;
            x2 = X + Len * Math.cos(Rad);
            y2 = Y + Len * Math.sin(Rad);
            g2.draw(new Line2D.Double(X, Y, x2, y2));
            //秒针 
            g2.setPaint(Color.RED);
            Rad = Math.toRadians(6 * ss - 90);
            Len = 0.9 * R;
            x2 = X + Len * Math.cos(Rad);
            y2 = Y + Len * Math.sin(Rad);
            g2.draw(new Line2D.Double(X, Y, x2, y2));
            //定义字体 
            Font f1 = new Font("Serif", Font.BOLD, 14);
            g2.setFont(f1);
            g2.setColor(Color.RED);
            g2.drawString(NowTime, 130, 25);
        }