Last week-end I built a watercolor simulator based on real physics (as much as possible). A lot of you asked to play with it so i improved it and it's now live. New since the prototype: - More pigments (52), based on the best research out there to predict... color mixes (Kubelka-Munk). - More luminous / glassy feel - Some fun experimental stuff like the salt and alcohol techniques to alter the texture, a backlight effect and a few more. - I also added a Code mode where the simulator prints its real function calls next to the sheet while you paint 🤓♥️ It's still largely based on the same physics model as my prototype: Curtis et al.'s "Computer-Generated Watercolor". All in the browser. Current status: building and implementing a kid-friendly version for Marble App. Plenty of awesome things to learn with watercolor painting!show more

Link to try it:

Can you make an ipad app? So good, I could handover ipad to my 2y old for the first time to play with your app.

We’ll integrate it in the Marble beta (available on iPad)

this is beautiful!

This is wonderful! I wish there was an undo button (I always prefer cmd/ctrl+z). And if there was an option to uplaod an SVG and apply the same effect, it'd be pretty cool too!

Damn, I need to build a V3. Thanks for the feedback!

Hell yea

I love this ir looks wonderful

Very cool! It feels so realistic!

I was really bad with water colors! Will give myself another try with this one haha.

I still highly recommend IRL watercolors, but this one is satisfying too :)

Paper texture so good

Thank you Andrew!

Wow, great work!

Thank you!

52 pigments is commitment

😅

love this

🙏♥️

Having this on the ipad with gravity would be beautiful

curtis et al's model wasn't built for real-time, the original paper ran the capillary/diffusion simulation offline. getting kubelka-munk mixing to hold interactive framerates while you're actively painting is the harder part, not the pigment count.

🎨👀

this is so cool! reminded me me of paper chromatography tests from highschool :)

Asked claude to build me a watercolor simulator, guess what it named the app...

Haha, it should have been Sudo Aquarelle on mine when I pushed it live... Fixed now, but yeah not a great name anyway.

Great. Thanx for sharing!

This is so so beautiful, Lionel

Thanks a lot Sohneya!!

This is wonderful, though tricky with a mouse, I need to try it on my tablet. Code output is interesting. I once wrote a simple glsl paint app where you could edit the brush shader in the browser, though it was limited to brush radius. This makes me want to revisit that.

Btw, how does your mixing compare to

KidPix Wacky Brush paint tool level up. Beautiful.

Wow

Excellent work, calming

Thank you Mehdi!

Looks beautiful! Just imaging devs making artistic sequence and flow diagrams in this vs excalidraw haha

This app should be getting so much traffic given the popularity of water color. It’s amazing

Banger

52 pigments is oddly satisfying

that paper is so cool !

Not gonna lie, I’m genuinely impressed, the physics of the water & pigment blending really makes me think of real watercolors, & I love me some watercoloring!!! One thing I noticed is that when you reset the pigment, your image gets tanked with that reset. undo doesn’t restore.

very nice

afaik you don't have tech background, so you create it with Claude ? What did it use to built it ? (framework, libraries i mean) That works pretty well ! So cool !

damn so cool！

you should sell this to schools

If you could turn this into a clip studio paint brush that'd be better than a standalone app