Applying Color Transformations : BitmapData « Graphics « Flash / Flex / ActionScript

Applying Color Transformations

package {

    import flash.display.BitmapData;
    import flash.display.Bitmap;
    import flash.display.Sprite;
    import flash.display.Loader;
    import flash.geom.Rectangle;
    import flash.geom.ColorTransform;

    public class Main extends Sprite {

        private var _loader:Loader = new Loader();

        public function Main () {
            _loader.load(new URLRequest(""));

        private function completeHandler(event:Event):void {
            var w:Number = _loader.width;
            var h:Number = _loader.height;

            var bitmapData:BitmapData = new BitmapData(w, h);
            bitmapData.colorTransform(new Rectangle(0, 0, w/2, h/2), new ColorTransform(1, 0, 0, 1, 0, 0, 0, 0));
            bitmapData.colorTransform(new Rectangle(w/2, 0, w/2, h/2), new ColorTransform(0, 1, 0, 1, 0, 0, 0, 0));
            bitmapData.colorTransform(new Rectangle(0, h/2, w/2, h/2), new ColorTransform(0, 0, 1, 1, 0, 0, 0, 0));
            bitmapData.colorTransform(new Rectangle(w/2, h/2, w/2, h/2), new ColorTransform(1, 1, 0, 1, 0, 0, 0, 0));

            var bitmap:Bitmap = new Bitmap(bitmapData);


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4.Creating a Flood Fill
5.Create animation by setting the bitmap pixel
7.File BitmapData with Rectangle
8.Get pixel data from BitmapData
9.The alpha value of pixels can be set in transparent bitmaps only (i.e., bitmaps created with the value true passed to the transparent parameter of the BitmapData constructor)
10.getPixel32() Versus getPixel( )
11.Retrieve a pixel with Alpha set to 255, from a transparent image
12.Retrieving the Color of a Region of Pixels
13.Modifying a BitmapData
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15.Using BitmapData.lock( ) to improve performance
16.Assigning the Color of a Region of Pixels
17.How draw( ) handles Alpha channel values
18.Detecting Areas by Color
19.Adding Noise
20.Adding Perlin Noise
21.Updates the octaves parameter
22.The randomSeed parameter is responsible for the randomness of the noise
23.The following code makes a BitmapData object with Perlin noise, and then uses that object as a bitmap fill. Because the stitch parameter is false, the edges are visible as it tiles.
24.PerlinNoise animation