getPixelMapFromId = function(img) {
var canvas;
if(!canvas) {
canvas = document.createElement('canvas');
canvas.width = 170;
canvas.height = 50;
canvas.getContext('2d').drawImage(img, 0, 0, 170, 50);
}
var pixelMap = [];
for (var i = 0; i < 50; i++) {
var temp = [];
for (var k = 0; k < 170; k++) {
temp.push(Boolean(canvas.getContext('2d').getImageData(k, i, 1, 1).data[3]) ? 1 : 0);
};
pixelMap.push(temp);
};
return pixelMap;
};
getPixelMapFromId = function(img) {
var canvas;
if(!canvas) {
canvas = document.createElement('canvas');
canvas.width = 170;
canvas.height = 50;
canvas.getContext('2d').drawImage(img, 0, 0, 170, 50);
}
var pixelMap = [];
for (var i = 0; i < 50; i++) {
var temp = [];
for (var k = 0; k < 170; k++) {
temp.push(Boolean(canvas.getContext('2d').getImageData(k, i, 1, 1).data[3]) ? 1 : 0);
};
pixelMap.push(temp);
};
return pixelMap;
};