105 lines
2.7 KiB
Java
105 lines
2.7 KiB
Java
import java.awt.*;
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import javax.swing.JFrame;
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public class Flocon extends Polygon {
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Vector2[] ptable;
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public Flocon() {
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super();
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}
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private int floc(int n, int offset, int aoffset) {
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if (n < 0) return offset+1;
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Vector2 local = ptable[offset].toLocal(ptable[offset+1]);
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local.div(3);
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Vector2 s1 = Vector2.add(ptable[offset], local);
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ptable[offset+1] = s1;
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if (n > 0) {
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offset = floc(n-1, offset, aoffset);
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} else offset++;
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Vector2 s2 = Vector2.add(s1, Vector2.rotate(local, -60 - aoffset));
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ptable[offset+1] = s2;
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if (n > 0) {
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offset = floc(n-1, offset, aoffset);
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} else offset++;
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Vector2 s3 = Vector2.add(s2, Vector2.rotate(local, 60 + aoffset));
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ptable[offset+1] = s3;
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if (n > 0) {
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offset = floc(n-1, offset, aoffset);
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} else offset++;
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Vector2 s4 = Vector2.add(s3, local);
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ptable[offset+1] = s4;
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if (n > 0) {
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offset = floc(n-1, offset, aoffset);
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} else offset++;
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return offset;
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}
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public void createFloc(int x, int y, int r, int n, int aoffset) {
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int size = 4;
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for (int i = 0; i < n; i++) size = size * 4 - 3;
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this.ptable = new Vector2[size];
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int offset = 0;
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ptable[0] = Vector2.rotate(new Vector2(0, -r),-60).add(new Vector2(x, y));
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ptable[1] = Vector2.rotate(new Vector2(0, -r), 60).add(new Vector2(x, y));
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offset = floc(n-1, offset, aoffset);
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ptable[offset+1] = Vector2.rotate(new Vector2(0, -r), 180).add(new Vector2(x, y));
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offset = floc(n-1, offset, aoffset);
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ptable[offset+1] = Vector2.rotate(new Vector2(0, -r), -60).add(new Vector2(x, y));
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floc(n-1, offset, aoffset);
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for (Vector2 v : ptable) {
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addPoint(v.x, v.y);
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}
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}
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public static void main(String[] args) {
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JFrame f = new JFrame();
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f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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f.setLocation(100, 100);
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f.setSize(1200, 1200);
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Flocon p = new Flocon();
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p.createFloc(f.getWidth() / 2, f.getHeight() / 2 - 100, 500, 4, 0);
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FloconPanel fp = new FloconPanel(p);
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f.add(fp);
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f.setVisible(true);
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int a = 0;
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while(true) {
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try {
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Thread.sleep(16);
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} catch (Exception e) {
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}
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a += 1;
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p.xpoints = new int[0];
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p.ypoints = new int[0];
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p.npoints = 0;
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p.createFloc(f.getWidth() / 2, f.getHeight() / 2 - 100, 500, 4, a);
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fp.repaint();
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}
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}
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}
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