Random Green Tree

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license : see code comments
modified : 2009-02-28 01:28:46

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package {
    import flash.display.Sprite;
    public class FlashTest extends Sprite {
        private var level:int = 0;

// just some random tree :)
        private function drawTree (x:Number, y:Number, length:Number, angle:Number, cf:int):void {
            level += 1;

var destx:Number = x + length * Math.cos(angle * (Math.PI/180));
            var desty:Number = y + length * Math.sin(angle * (Math.PI/180));

// for the most of time, we use green,
            // but sometimes pink to make flowers
            if ((level > 5) && (Math.random () < 0.03)) cf = 0xF0007;

graphics.lineStyle(1 + 5 / level, cf * level);
            graphics.moveTo (x, y);
            graphics.lineTo (destx, desty);

if (level < 10) {
                drawTree (destx, desty, length * (1 + 3 * Math.random()) * 0.25,
                    angle + 60 * (Math.random() - Math.random()), cf);
                drawTree (destx, desty, length * (1 + 3 * Math.random()) * 0.25,
                    angle + 60 * (Math.random() - Math.random()), cf);
                drawTree (destx, desty, length * (1 + 3 * Math.random()) * 0.25,
                    angle + 60 * (Math.random() - Math.random()), cf);
            }

level -= 1;
        }

public function FlashTest() {
            drawTree (stage.stageWidth/2, stage.stageHeight, 90, -90, 0xF00);
        }
    }
}

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