Oops, sorry, fat fingered the "to". On Fri, Apr 1, 2016 at 10:08 PM, Owen Densmore <[email protected]> wrote:
> Check this out: > http://backspaces.net/temp/export.html > .. it runs for 200 ticks then creates dataUrl images out the individual > layers being used (Patches, Links, Turtles). And then creates a composite > of all the layers (export world sort of thing) > > One fascinating thing: if you click on the layers & composite, and > save-as, the resulting images are real pngs! Like tiny! > > So the browser has the ability to create pngs and download them. This is > maybe useful. Surprisingly, the dataUrls are not that much larger. > > Example: on the run I just made, the composite dataUrl was 55K, while the > saved .png was 42K. Possibly the png is not as compressed as it could be .. > when I read it into Graphic Converter and wrote it back out, it shrank to > 36K. But still, the dataUrl is not that bad. > > There's a hack that I've seen on Stack Overflow where you put the image in > a hidden <a> then use JS to "click" it and it downloads it! Weird. > > I've also use canvas.toBlob, and createImageBitmap(blob). They're pretty > compressed, say 1/3 smaller. But only on modern browsers etc... > > -- Owen >
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