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Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

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Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#22

Great work! I have been looking for an excuse to try out Krita. This just might be it. Shameless plug: I am also a sucker for metallic aesthetics, and I made this FOSS library to enable realistic metal textures on the web (for buttons, cards, input elements, etc.): https://www.metallicss.com

Very nice, I approve of anything that goes against the Material Design hegemony. One question though: there's a (relatively) large delay updating the demo when I change the convexity. Is this something that comes from the update script or is the effect itself slow? Because I don't think I've ever seen a CSS effect that takes a half second to update before.

There are a lot of canvas in there, I doubt CSS is involved much in drawing this effect.

Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#24

Earlier quoted context omitted.

Memileo's results and your own are both incredible. Wow. How baked in is the light position? I'd imagine it's possible to rotate the light in editor but not change it's height (without some work in Blender).

Ah, you would need to ask them for a concrete answer, but my understanding is that it is completely baked in. Long optional explanation: I say that because I think Memileo sculpted the actual brushstroke in Blender ( https://krita-artists.org/uploads/default/original/3X/5/7/57... ) and rendered lighting at different angles, and exported each as an image. Each rendered image becomes 1 frame of the "animated brushtip",…

Great stuff, it's good to hear how brushes work in these programs, reminds me of a great chat with one of the MyPaint devs.

Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#25

Great work! I have been looking for an excuse to try out Krita. This just might be it. Shameless plug: I am also a sucker for metallic aesthetics, and I made this FOSS library to enable realistic metal textures on the web (for buttons, cards, input elements, etc.): https://www.metallicss.com

wow, that's amazing! I'm gobsmacked you can make something like this with CSS, that is so cool

Not just CSS, it's used to set parameters but looks like the actual rendering is done in a element controlled by JS.

Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#26
post #25

Earlier quoted context omitted.

wow, that's amazing! I'm gobsmacked you can make something like this with CSS, that is so cool

Not just CSS, it's used to set parameters but looks like the actual rendering is done in a element controlled by JS.

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Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#27

Earlier quoted context omitted.

On the right track but not quite! Every brush in art software uses an image (raster or auto-generated) to paint with, called a "brushtip". Usually, the brushtip only gives information about which bits are opaque, and which arent - the shape! However in Krita, theres another dimension you can define; value, or lightness. So there's nothing being generated or created while drawing, its just that some very smart people…

Photoshop and other painting software had "intelligent" brushes for a while now. These try to simulate stuff like paint mixing (even watercolor), opacity and texture.

Could you give me an example? I'd love to know more about the watercolour paint mixing. If you meant the "live tip" settings of Photoshop, you can do all that in Krita too, using the "texture", and "mask tip" features. RGBA seems to definitely be something Krita has over Photoshop, but I could well be wrong!

by the way, there are other softwares like Rebelle that try to truly simulate traditional mediums - bordering on a whole-ass physics engine that works completely different in the backend from PSD/Krita. Unfortunately its a paid software so yeah :s

Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#29
post #25

Earlier quoted context omitted.

wow, that's amazing! I'm gobsmacked you can make something like this with CSS, that is so cool

Not just CSS, it's used to set parameters but looks like the actual rendering is done in a element controlled by JS.

My apologies Kroltan, I accidentally replied to the wrong comment earlier! It's a shame the project disapeared I would have loved to have seen that :D

Rubber is a hard thing to get right imo, I was trying to paint it for one of the brush thumbnails of a rubber stamp (https://www.mediafire.com/view/46tten5kkzh2i99/Stamp_Diamond...) - and it was really difficult, I still don't think I got it quite right xD So I can't imagine how tough it would have been to try and create that texture using only CSS and JS back then

Re: Show HN: Krita RGBA Tech – Bringing Realistic Metal to Life in Open-Source Art

#30

Great work! I have been looking for an excuse to try out Krita. This just might be it. Shameless plug: I am also a sucker for metallic aesthetics, and I made this FOSS library to enable realistic metal textures on the web (for buttons, cards, input elements, etc.): https://www.metallicss.com

When I get around to making my website I will now be able to create a big, shiny, beautiful gold "Download Here" button!! thank you so much for sharing \╭◜◝ ᵕ ◜◝╮/
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