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Adding Frame Renderer utility

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juliandescottes 2012-09-04 08:35:58 +02:00
parent bd9f8f4489
commit 561c35c882
1 changed files with 31 additions and 0 deletions
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31
js/rendering/FrameRenderer.js Normal file
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(function () {
var ns = $.namespace("pskl.rendering");
ns.FrameRenderer = function () {};
ns.FrameRenderer.prototype.render = function (frame, canvas, dpi) {
var color;
for(var col = 0, num_col = frame.length; col < num_col; col++) {
for(var row = 0, num_row = frame[col].length; row < num_row; row++) {
color = frame[col][row];
this.drawPixelInCanvas(col, row, canvas, color, dpi);
}
}
};
ns.FrameRenderer.prototype.drawPixelInCanvas = function () {
var context = canvas.getContext('2d');
if(color == Constants.TRANSPARENT_COLOR) {
context.clearRect(col * dpi, row * dpi, dpi, dpi);
}
else {
if(color != Constants.SELECTION_TRANSPARENT_COLOR) {
// TODO(vincz): Found a better design to update the palette, it's called too frequently.
$.publish(Events.COLOR_USED, [color]);
}
context.fillStyle = color;
context.fillRect(col * dpi, row * dpi, dpi, dpi);
}
}
})();