TreeCurve
木に見えるフラクタル
//木に見えるフラクタル
package {
import flash.display.Sprite;
import flash.events.*;
import flash.geom.Point;
[SWF(backgroundColor=0x000000)]
public class TreeCurve extends Sprite {
private var list:Array = new Array();
private const SIZE:int = 465;
private const RAD:Number = Math.PI/8;
private const a:Number = 0.75;
function TreeCurve() {
addLine(new Line(new Point(SIZE/2, SIZE), new Point(SIZE/2, SIZE*4/5)));
stage.addEventListener(Event.ENTER_FRAME,onEnterFrameHandler);
}
private function onEnterFrameHandler(event:Event):void {
var line:Line=list[0];
list.splice(0, 1);
addLine(new Line(line.endP, new Point(line.endP.x + line.distance * a * Math.cos(line.angle + RAD), line.endP.y + line.distance * a * Math.sin(line.angle+RAD))));
addLine(new Line(line.endP, new Point(line.endP.x + line.distance * a * Math.cos(line.angle - RAD), line.endP.y + line.distance * a * Math.sin(line.angle - RAD))));
}
private function addLine(line:Line):void {
list.push(line);
addChild(line);
}
}
}
import flash.display.Sprite;
import flash.geom.Point;
class Line extends Sprite {
public var startP:Point;
public var endP:Point;
public var distance:Number;
public var angle:Number;
function Line(startP:Point, endP:Point) {
this.startP = startP;
this.endP = endP;
angle = Math.atan2(endP.y-startP.y, endP.x-startP.x);
distance = Point.distance(startP, endP);
graphics.lineStyle(0,0xffffff);
graphics.moveTo(startP.x, startP.y);
graphics.lineTo(endP.x, endP.y);
graphics.endFill();
}
}