EJ Fox & Ian Johnson
streaming data, code, acid, design
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Graphene Moiré 3D
num = 100
// width = 600;
pointsToMesh = function(layer) {
let tx = -0;
let ty = -0;
let scale = .01;
const material = new THREE.MeshStandardMaterial({
color: 0xff3333
// opacity: 0.4
});
// just as with textures, we need to put colors into linear color space
material.color.convertSRGBToLinear();
var extrudeSettings = {
steps: 4,
depth: .1,
bevelEnabled: false
// bevelThickness: 1,
// bevelSize: .1,
// bevelOffset: 0,
// bevelSegments: 1
};
let meshes = layer.map((points, i) => {
let shape = new THREE.Shape();
extrudeSettings.depth =
Math.abs(Math.sin(((Math.PI * i) / layer.length) * 8)) * 0.4 + 0.05;
// console.log(tx + points[0].x * scale);
shape.moveTo(tx + points[0].x * scale, ty + points[0].y * scale);
points.forEach(d => {
let x = tx + d.x * scale;
let y = ty + d.y * scale;
shape.lineTo(x, y);
});
// shape.lineTo(tx + points[0].nx * scale, ty + points[0].ny * scale);
let geometry = new THREE.ExtrudeGeometry(shape, extrudeSettings);
let mesh = new THREE.Mesh(geometry, material);
return mesh;
});
return meshes;
}
hexGridPaths = d3
.create("svg")
.selectAll("path")
.data(hexGrids)
.enter()
.append("path")
.attr("d", d => getHexGridPath(d, scale))
.nodes()
function getHexGridPath(vertices, scale) {
var baseString = vertices.map(vertex => {
const x = scale*vertex[0];
const y = scale*vertex[1];
const ring = vertex[2];
const sextant = vertex[3];
let circle = getPointsAroundACircle(getPointObject([x,y]),scale/Math.sqrt(3), 6, Math.PI / 6)
circle.push(circle[0])
// little trick to deduplicate edges in the lattice
if(ring % 2 === 1) {
circle = circle.filter((c,i) => (i === (sextant + 1) % 6) || i === ((sextant+ 2) % 6))
}
const stringy = circle
.map(coord => `L ${coord.x} ${coord.y}`)
.join('')
.substring(1);
return 'M' + stringy;
}).join('');
return baseString;
}
getHexGridPath(hexGrids[0], scale)
getHexGridCircles(hexGrids[0], scale)
function getHexGridCircles(vertices, scale) {
var baseString = vertices.map(vertex => {
const x = scale * vertex[0];
const y = scale * vertex[1];
const ring = vertex[2];
const sextant = vertex[3];
let circle = getPointsAroundACircle(
getPointObject([x, y]),
(scale / Math.sqrt(3)) * .7,
6,
Math.PI / 6
);
circle.push(circle[0]);
// little trick to deduplicate edges in the lattice
// if (ring % 2 === 1) {
// circle = circle.filter(
// (c, i) => i === (sextant + 1) % 6 || i === (sextant + 2) % 6
// );
// }
return circle;
});
return baseString;
}
function getPointsAroundACircle(circleCenterObject, circleRadius, numOfPoints, phase) {
var points = [];
for(let i = 0; i < numOfPoints; i++ ) {
var pointX = circleCenterObject.x + circleRadius * Math.cos(phase + i * 2 * Math.PI / numOfPoints);
var pointY = circleCenterObject.y + circleRadius * Math.sin(phase + i * 2 * Math.PI / numOfPoints);
var point = addPolarCoords(getPointObject([pointX, pointY]));
points.push(point)
}
return points;
}
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
