🧪 Indie software researcher & developer
👾 React game developer
quad = regl({
frag: `
precision mediump float;
const vec2 size = vec2(${canvas.width}, ${canvas.height});
const vec2 invSize = vec2(
${(1 / canvas.width).toPrecision(5)},
${(1 / canvas.height).toPrecision(5)});
const int radius = ${radius};
const float invRadius = ${(1 / radius).toPrecision(5)};
uniform sampler2D space;
varying vec2 uv;
vec3 getSimplexCellCoords(vec2 coords) {
const float c1 = 0.366025403784439; // 0.5*(sqrt(3.0)-1.0)
const float c2 = 0.211324865405187; // (3.0-sqrt(3.0))/6.0
vec2 doublecellPosition = floor(coords + dot(coords, vec2(c1)) );
vec2 x0 = coords - doublecellPosition + dot(doublecellPosition, vec2(c2));
return vec3(doublecellPosition, x0.x > x0.y ? 1 : -1);
}
void main() {
vec3 simplexCellCoords = getSimplexCellCoords(uv * size);
vec4 doublecell = texture2D(space, simplexCellCoords.xy * invRadius);
float cell = (simplexCellCoords.z <= 0.0) ? doublecell.x : doublecell.y;
gl_FragColor = vec4(cell, 0, 0, 1);
}`,
vert: `
precision mediump float;
attribute vec2 position;
varying vec2 uv;
uniform mat3 zoomMatrix;
void main() {
vec2 zoomedPosition = (zoomMatrix * vec3(position, 1)).xy;
uv = 0.5 * (zoomedPosition + 1.0);
gl_Position = vec4(position, 0, 1);
}`,
uniforms: {
space: (_, { space }) => space,
zoomMatrix: (_, { zoomMatrix }) => zoomMatrix
},
attributes: { position: [-3, -1, 3, -1, 0, 2] },
count: 3,
depth: { enable: false }
})
state = Array(2)
.fill()
.map(() =>
regl.framebuffer({
color: regl.texture({
radius,
data: initialState,
wrap: 'repeat'
}),
depth: false,
depthStencil: false
})
)
initialState = Array(radius * radius * 4)
.fill()
.map((_, i) => (Math.random() > 0.5 ? 255 : 0))
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.