Show HN: isometric.nyc – giant isometric pixel art map of NYC

amazing work!

gemini 3.5 pro reverse engineered it - if you use the code at the following gist, you can jump to any specific lat lng :-)

https://gist.github.com/gregsadetsky/c4c1a87277063430c26922b...

also, check out https://cannoneyed.com/isometric-nyc/?debug=true ..!

---

code below (copy & paste into your devtools, change the lat lng on the last line):

    const calib={p1:{pixel:{x:52548,y:64928},geo:{lat:40.75145020893891,lng:-73.9596826628078}},p2:{pixel:{x:40262,y:51982},geo:{lat:40.685498640229675,lng:-73.98074283976926}},p3:{pixel:{x:45916,y:67519},geo:{lat:40.757903901085726,lng:-73.98557060196454}}};function getAffineTransform(){let{p1:e,p2:l,p3:g}=calib,o=e.geo.lat*(l.geo.lng-g.geo.lng)-l.geo.lat*(e.geo.lng-g.geo.lng)+g.geo.lat*(e.geo.lng-l.geo.lng);if(0===o)return console.error("Points are collinear, cannot solve."),null;let n=(e.pixel.x*(l.geo.lng-g.geo.lng)-l.pixel.x*(e.geo.lng-g.geo.lng)+g.pixel.x*(e.geo.lng-l.geo.lng))/o,x=(e.geo.lat*(l.pixel.x-g.pixel.x)-l.geo.lat*(e.pixel.x-g.pixel.x)+g.geo.lat*(e.pixel.x-l.pixel.x))/o,i=(e.geo.lat*(l.geo.lng*g.pixel.x-g.geo.lng*l.pixel.x)-l.geo.lat*(e.geo.lng*g.pixel.x-g.geo.lng*e.pixel.x)+g.geo.lat*(e.geo.lng*l.pixel.x-l.geo.lng*e.pixel.x))/o,t=(e.pixel.y*(l.geo.lng-g.geo.lng)-l.pixel.y*(e.geo.lng-g.geo.lng)+g.pixel.y*(e.geo.lng-l.geo.lng))/o,p=(e.geo.lat*(l.pixel.y-g.pixel.y)-l.geo.lat*(e.pixel.y-g.pixel.y)+g.geo.lat*(e.pixel.y-l.pixel.y))/o,a=(e.geo.lat*(l.geo.lng*g.pixel.y-g.geo.lng*l.pixel.y)-l.geo.lat*(e.geo.lng*g.pixel.y-g.geo.lng*e.pixel.y)+g.geo.lat*(e.geo.lng*l.pixel.y-l.geo.lng*e.pixel.y))/o;return{Ax:n,Bx:x,Cx:i,Ay:t,By:p,Cy:a}}function jumpToLatLng(e,l){let g=getAffineTransform();if(!g)return;let o=g.Ax*e+g.Bx*l+g.Cx,n=g.Ay*e+g.By*l+g.Cy,x=Math.round(o),i=Math.round(n);console.log(` Jumping to Geo: ${e}, ${l}`),console.log(` Calculated Pixel: ${x}, ${i}`),localStorage.setItem("isometric-nyc-view-state",JSON.stringify({target:[x,i,0],zoom:13.95})),window.location.reload()};
    jumpToLatLng(40.757903901085726,-73.98557060196454);

I'm curious why you didn't do something like generate new tiles one at a time, but just expand the input area on the sides with already-generated neighbors. Looks like your infill model doesn't really care about tile sizes, and I doubt it really needs full adjacent tiles to match style. Why 2x2 tile inputs rather than say... generate new tiles one at a time, but add 50px of bordering tile on each side that already has a pixel art neighbor?

This is very cool, it would be awesome if I could rotate it as well by 90 degree increments to peek at different angles! I loved RCT growing up so this is hitting the nostalgia!

Very cool. Street names with an on/off toggle would be nice.

One thing I learned from this is that my prompts are much less detailed than what author has been using.

Very cool work and great write up.