vtf/test.js

Work with VTF files in javascript

var vtf = require('./src/vtf.js');


/**
 * get an emscripten pointer to the image data from the canvas
 */
function dataFromCanvas(canvas) {
	var ctx = canvas.getContext("2d");
	return ctx.getImageData(0, 0, canvas.width, canvas.height).data;

}

function test() {
	var c = document.getElementById("canvas");
	var ctx = c.getContext("2d");
	var img = document.getElementById("source");
	c.width = img.width;
	c.height = img.height;
	ctx.drawImage(img, 0, 0);
	var start = (new Date()).getTime();
	var targetData = vtf.fromRGBA(dataFromCanvas(c), c.width, c.height);
	var end = (new Date()).getTime();
	console.log("took " + (end - start) + "ms");
	var blob = new Blob([targetData], {type: 'application/octet-binary'});
	var url = URL.createObjectURL(blob);
	//window.location = url;
}

window.test = test;