Show HN: Sfera – sliding puzzle in curved space (open-sourced)github.com2 points·by bntr·2 เดือนที่ผ่านมา·0 comments
Show HN: Visual Lambda Calculus – a thesis project (2008) revived for the webgithub.com49 points·by bntr·4 เดือนที่ผ่านมา·9 comments
Show HN: Using Strudel to control dance animationsgithub.com2 points·by bntr·6 เดือนที่ผ่านมา·0 comments
Show HN: Reverse perspective camera for OpenGL (Three.js)github.com52 points·by bntr·8 เดือนที่ผ่านมา·8 comments
bntr·4 เดือนที่ผ่านมา·discussDuplo is also compatible with regular Lego. We used Duplo for the big structure and Lego on top for details. Great way to build huge stuff quickly.https://upload.wikimedia.org/wikipedia/commons/0/04/LEGO-kom...
bntr·4 เดือนที่ผ่านมา·discussThanks! I liked the pics here: https://piedeleu.com/posts/diagrammatic-lambda-calculus/I'd love to see them smoothly animated.
bntr·4 เดือนที่ผ่านมา·discussI like this catalog: https://github.com/prathyvsh/lambda-calculus-visualizationsAnd it seems that John Tromp's diagrams originate from David C. Keenan's Mockingbird (1996),and Bubble Notation comes from Wayne Citrin's Visual Expressions (1995)
bntr·4 เดือนที่ผ่านมา·discussYou can also construct your own puzzles and share them via URL.Example: https://bntre.github.io/visual-lambda/#workspace=H4sIAAAAAAA...
bntr·4 เดือนที่ผ่านมา·discussFor comparison: factorial(3) visualized in two different notations.John Tromp's Lambda Diagrams (via 2swap): https://www.youtube.com/watch?v=RcVA8Nj6HEo&t=1346sBubble Notation: https://www.youtube.com/watch?v=aRgu8S3Pnb8
bntr·7 เดือนที่ผ่านมา·discussA tiny experimental "continuous-motion" Life glider I once made - an artistic take: https://bntr.planet.ee/lj/glider.gif
bntr·8 เดือนที่ผ่านมา·discussExactly. Reversing the z-test is one way to get a reverse-perspective effect, but it doesn't allow for a smooth transition between projections (like dolly zoom).
bntr·8 เดือนที่ผ่านมา·discussFor an extra dose of nausea, there's also a cross-eye stereo version: https://bntr.planet.ee/temp/rp/(Alt + mouse wheel changes the eye distance)
bntr·8 เดือนที่ผ่านมา·discussNo performance hit - it's just a custom projection matrix. The rest of the rendering pipeline works exactly the same as with a normal camera.
bntr·8 เดือนที่ผ่านมา·discussGreat visualization! It would be good to add some fog for a better perception of 3D.
bntr·8 เดือนที่ผ่านมา·discussOnce I made a transition between two ditherings: https://github.com/bntre/dithering-gradient-py
bntr·10 เดือนที่ผ่านมา·discussAnother notation showing the construction of the predecessor function: https://www.youtube.com/watch?v=CWzn2ucPMdg
bntr·10 เดือนที่ผ่านมา·discussThe most complete catalog I've found: https://github.com/prathyvsh/lambda-calculus-visualizations