wip/raster font

 
var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update });

function preload() {

    game.load.image('knightHawks', 'assets/demoscene/knighthawks.png');
    // game.load.image('raster', 'assets/demoscene/pink-raster.png');
    game.load.image('raster', 'assets/demoscene/multi-color-raster.png');

}

var font;
var alpha;
var mask = new Phaser.Rectangle();

function create() {

    font = game.make.bitmapData();
    alpha = game.make.bitmapData();
    raster = game.make.bitmapData();

    //  Load the font
    font.load('knightHawks');

    //  Extract all the pink pixels into the alpha bmd
    font.extract(alpha, 237, 0, 140, 255, true);

    raster.resize(font.width, font.height);

    //  Display the 4 stages of the process
    game.add.image(0, 0, 'knightHawks');
    game.add.image(360, 0, alpha);
    game.add.image(0, 200, raster);
    game.add.image(360, 200, font);

    //  Tween the rasters
    mask.setTo(0, 0, font.width, game.cache.getImage('raster').height);

    game.add.tween(mask).to( { y: -(mask.height - font.height) }, 4000, Phaser.Easing.Sinusoidal.InOut, true, 0, 100, true);

}

function update() {

    raster.cls();
    raster.alphaMask('raster', alpha, mask);

    font.draw(raster);

}