Just out of curiosity, how did you overcome slow HTML5 canvas' getImageData and pixel reading from an image affected by CORS (tainted canvas)?
Show HN: Polarr.co, a WebGL photo editor
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Re: Show HN: Polarr.co, a WebGL photo editor
#32Very impressed by the performance. With a 10mb png I don't notice any lag. Is it just me or is the mousewheel zoom backwards? Max zoom seems a bit weak too. I notice you mention RAW support. Is that really your target market? It seems like people shooting RAW would probably be using a dedicated solution most of the time.... maybe not. As far as I'm aware there are multiple different raw formats from different manufac…
1) It's zoom forward on many mac computer touchpad, the max zoom isn't 100% but is currently limited to a good memory performance level, we will add "read" 100% inspection
2) We've seen people requesting RAW image editing, and technically it's interesting for us to find a way to support that, this could be an open source effort. On the C/C++ community, dcraw.c already support all brands of cameras for RAW.
3) Nice suggestion on the controls!
4) That was a dirty hack but good to hear that people're using it..
5) We will add that.
Thanks a ton for all the suggestions!
Re: Show HN: Polarr.co, a WebGL photo editor
#33IE 11 supports WebGL, any technical reason for browser sniffing? I tried it with the flag, and it works fine in IE 11. ( https://www.polarr.co/editor?force_browser_support=1 )
The support is incomplete and we're still evaluating memory issues with IE as well as their toDataURL. We're two developers and as soon as we have more bandwidth we will start to support IE.
Re: Show HN: Polarr.co, a WebGL photo editor
#34Earlier quoted context omitted.
Have you thought about compiling dcraw to javascript with emscripten? I'm not sure what the performance would be like, but I've seen this work in the past.
I'd try rawspeed instead of dcraw. Much faster and cleaner code and the latest version supports almost all cameras.
Thanks! Will try this out!
Re: Show HN: Polarr.co, a WebGL photo editor
#35Earlier quoted context omitted.
Have you thought about compiling dcraw to javascript with emscripten? I'm not sure what the performance would be like, but I've seen this work in the past.
I'd try rawspeed instead of dcraw. Much faster and cleaner code and the latest version supports almost all cameras.
rawspeed won't let you extract the thumbnail. Also, the reason I suggested dcraw is because it's one C file and that makes things a lot easier, especially when compiling to javascript.
Re: Show HN: Polarr.co, a WebGL photo editor
#36Dev of Polarr here. I think the biggest thing that's missing from the current release is RAW image support which is technically difficult to do. We're right now having some success of extracting the thumbnail of RAW and do it on the client side only using JS, but editing the RAW is a lot harder and we're thinking about using some WebGL texture blending. Any thought/comment on this is welcomed and appreciated. (Not su…
How are you going to solve the performance issues if JS's type is only 32 bit? I could see the possibility of mixing multiple JPEGs but extracting that probably takes you a minute in processing
JS numbers are doubles (64-bit floating-point numbers).
Re: Show HN: Polarr.co, a WebGL photo editor
#37Just out of curiosity, how did you overcome slow HTML5 canvas' getImageData and pixel reading from an image affected by CORS (tainted canvas)?
i am interested in this as well.
the app is awesome btw!
Re: Show HN: Polarr.co, a WebGL photo editor
#38Great technology. I'm maybe a bit stuck in my RAW file processing ways to find a use for this myself, but I am impressed with it's speed. A couple of things I'd like: - Proper support for high-res images - it might be in there, but the demo flower image is web res - The hover-to-select mechanism from Lightroom. You only need to hover over a control to adjust it with the keys. Appreciate the tab support though. - Fine…
Nice suggestion on the hover to edit, will add that!
This post is turning into a mega UX/UI testing ground which I'm really glad.
Local adjustment is working right now in Polarr. Spot removal is a very different game but we will see.
Re: Show HN: Polarr.co, a WebGL photo editor
#39[deleted]
Re: Show HN: Polarr.co, a WebGL photo editor
#40Dev of Polarr here. I think the biggest thing that's missing from the current release is RAW image support which is technically difficult to do. We're right now having some success of extracting the thumbnail of RAW and do it on the client side only using JS, but editing the RAW is a lot harder and we're thinking about using some WebGL texture blending. Any thought/comment on this is welcomed and appreciated. (Not su…
Have you thought about compiling dcraw to javascript with emscripten? I'm not sure what the performance would be like, but I've seen this work in the past.
We tried it. It works with modification to emscripten and compiled code. Performance is acceptable and I think there is a much larger space using GPU to do the decoding as well. But I think the user won't just want to edit the thumbnail though I think many of them didn't know that.