54 lines
1.7 KiB
Java
54 lines
1.7 KiB
Java
import javax.swing.JPanel;
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import java.awt.*;
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import java.util.Random;
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public class FunPanel extends JPanel {
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public static double table = 0;
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public static int limit = 150;
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public FunPanel() {
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super();
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}
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private static Point getCirclePoint(double angle, double radius, Point offset) {
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Point p = new Point();
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p.x = (int)(Math.cos(angle) * radius) + offset.x;
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p.y = (int)(Math.sin(angle) * radius) + offset.y;
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return p;
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}
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private static float n = 0;
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private static Random r = new Random();
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@Override
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protected void paintComponent(Graphics g) {
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Graphics gg = g.create();
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if (this.isOpaque()) {
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gg.setColor(getBackground());
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gg.fillRect(this.getX(), this.getY(), getWidth(), getHeight());
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}
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double size = (double)(getWidth() > getHeight() ? getHeight() : getWidth()) / 2.5d;
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Point offset = new Point(getX() + getWidth() / 2, getY() + getHeight() / 2);
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gg.setColor(Color.BLACK);
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gg.drawString("" + table, 10, 15);
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for (double i = 1; i <= limit; i++) {
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double theta = (i / (double)limit) * Math.PI * 2 - Math.PI / 2 - (Math.PI * 2 / (double)limit);
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Point p0 = getCirclePoint(theta, size, offset);
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//gg.fillOval(p0.x, p0.y, 6, 6);
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//gg.drawString("" + i, p0.x, p0.y);
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for (double j = 1; j <= limit; j++) {
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double theta2 = (table * i / (double)limit) * Math.PI * 2 - Math.PI / 2 - (Math.PI * 2 / (double)limit);
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Point p1 = getCirclePoint(theta2, size, offset);
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gg.drawLine(p0.x, p0.y, p1.x, p1.y);
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}
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}
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}
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}
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