How to use the png-js.load function in png-js
To help you get started, we’ve selected a few png-js examples, based on popular ways it is used in public projects.
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devilesk / dota-interactive-map / www / bundle.js View on Github 
ImageHandler.prototype.load = function (callback) {
var self = this;
var t1 = Date.now();
self.canvas = document.createElement("canvas");
PNG.load(this.imagePath, self.canvas, function(png) {
self.png = png;
self.ctx = self.canvas.getContext("2d");
callback();
});
}
ImageHandler.prototype.scan = function (offset, width, height, pixelHandler, grid) {
