Color wheel

by flex_axis 10 Apr 2010

• Related works: 1
Embed

package
{
    import flash.display.BitmapData;
    import flash.display.CapsStyle;
    import flash.display.GradientType;
    import flash.display.Graphics;
    import flash.display.LineScaleMode;
    import flash.display.Sprite;
    import flash.geom.Matrix;

    public class ColorWheel extends Sprite
    {
        public function ColorWheel()
        {
            init();
        }

        private var _bitmapData:BitmapData;

        [Bindable]
        public function get bitmapData():BitmapData
        {
            return _bitmapData;
        }

        public function set bitmapData(value:BitmapData):void
        {
            _bitmapData=value;
        }

        public function init():void
        {
            var radians:Number, red:Number, green:Number, blue:Number, color:Number, matrix:Matrix, _x:Number, _y:Number,
                thickness:int;
            var i:int=0;
            var radius:Number=100;
            var offset:Number = radius/2;
            var g:Graphics=graphics;

            g.clear();
            thickness=1 + int(radius / 50);
            
            while (i < 360)
            {
                radians=i * (Math.PI / 180);
                red=(Math.cos(radians) * 127) + 128 << 16;
                green=(Math.cos(radians + 2 * Math.PI / 3) * 127) + 128 << 8;
                blue=(Math.cos(radians + 4 * Math.PI / 3) * 127) + 128;
                color=(red | green | blue);
                _x=(radius * Math.cos(radians));
                _y=(radius * Math.sin(radians));
                g.lineStyle(2, color, 1, false, LineScaleMode.NONE, CapsStyle.NONE);
                g.moveTo(offset, offset);
                g.lineTo(_x + (offset), _y + (offset));
                i++;
            }

            var m:Matrix = new Matrix();
            m.createGradientBox(radius,radius,0,0,0);
            g.lineStyle();
            g.beginGradientFill(GradientType.RADIAL,[0xFFFFFF,0xFFFFFF,0,0],[1,0,0,1],[0,140,140,255],m);
            g.drawCircle(offset,offset,offset);
            g.endFill();
            
            bitmapData=new BitmapData(radius, radius, false, 0);
            bitmapData.draw(this, null, null, null, null, true);
        }
    }
}