63 lines
No EOL
2.2 KiB
JavaScript
63 lines
No EOL
2.2 KiB
JavaScript
(function () {
|
|
|
|
var ns = $.namespace("pskl.rendering");
|
|
|
|
ns.SpritesheetRenderer = function (framesheet) {
|
|
this.framesheet = framesheet;
|
|
};
|
|
|
|
ns.SpritesheetRenderer.prototype.renderAsImageDataSpritesheetPNG = function () {
|
|
var canvas = this.createCanvas_();
|
|
for (var i = 0 ; i < this.framesheet.getFrameCount() ; i++) {
|
|
var frame = this.framesheet.getFrameByIndex(i);
|
|
this.drawFrameInCanvas_(frame, canvas, i * this.framesheet.getWidth(), 0);
|
|
}
|
|
return canvas.toDataURL("image/png");
|
|
};
|
|
|
|
ns.SpritesheetRenderer.prototype.renderAsImageDataAnimatedGIF = function (fps) {
|
|
var encoder = new window.GIFEncoder(), dpi = 10;
|
|
encoder.setRepeat(0);
|
|
encoder.setDelay(1000/fps);
|
|
|
|
encoder.start();
|
|
encoder.setSize(this.framesheet.getWidth() * dpi, this.framesheet.getHeight() * dpi);
|
|
for (var i = 0 ; i < this.framesheet.frames.length ; i++) {
|
|
var frame = this.framesheet.frames[i];
|
|
var renderer = new pskl.rendering.CanvasRenderer(frame, dpi);
|
|
encoder.addFrame(renderer.render());
|
|
}
|
|
encoder.finish();
|
|
|
|
var imageData = 'data:image/gif;base64,' + window.encode64(encoder.stream().getData());
|
|
return imageData;
|
|
};
|
|
|
|
|
|
/**
|
|
* TODO(juliandescottes): Mutualize with code already present in FrameRenderer
|
|
*/
|
|
ns.SpritesheetRenderer.prototype.drawFrameInCanvas_ = function (frame, canvas, offsetWidth, offsetHeight) {
|
|
var context = canvas.getContext('2d');
|
|
for(var col = 0, width = frame.getWidth(); col < width; col++) {
|
|
for(var row = 0, height = frame.getHeight(); row < height; row++) {
|
|
var color = frame.getPixel(col, row);
|
|
if(color != Constants.TRANSPARENT_COLOR) {
|
|
context.fillStyle = color;
|
|
context.fillRect(col + offsetWidth, row + offsetHeight, 1, 1);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
ns.SpritesheetRenderer.prototype.createCanvas_ = function () {
|
|
var frameCount = this.framesheet.getFrameCount();
|
|
if (frameCount > 0){
|
|
var width = frameCount * this.framesheet.getWidth();
|
|
var height = this.framesheet.getHeight();
|
|
return pskl.CanvasUtils.createCanvas(width, height);
|
|
} else {
|
|
throw "Cannot render empty Spritesheet";
|
|
}
|
|
};
|
|
})(); |