Consultant Designer & Developer
067 Tessellated tangrams065 144 Trapeziums064 Blank arcade063 Transmogrifying circles062 Mugshots061 Last 30 seconds060 Overprinted discs059 Lazy polygons058 Hexmaze057 Dreaming shapes056 Connections055 Letter grid054 Koch curve053 Fizzled grid052 Lines on a 5×5 grid051 Sol Lewitt’s ‘Lines of One Inch, Four Directions, Four Colours’050 Sol Lewitt’s wall drawing 289049 Dots and lines048 Blending ratios047 Squares using pen on paper046 Tetrahedrons045 Monochromatic squares044 Fifteen silly ways to draw a line043 One way to arrange lines042 Misregistered041 Running in circles040 Dancing to the noise039 Deformed Rectangles038 x raised to y mod n037 Shapes on a QuadTree036 Wolfram’s Rules 30, 90, 110 and 184035 Dancing Lines034 Sol LeWitt’s Successive Lines033 Directional Tiles032 A Bunch of Lines031 Lorenz Attractor030 Karel Martens’s Kinetic Work029 Map of Somewhere028 Piet Mondrian027 Peaks of Shards026 Dots in Motion025 A Pack of Circles024 Squares on Markov Chain023 Moon rise022 Tensile Roof021 Arrangements020 Squares and Arcs019 Sierpiński carpet018 Squiggles II017 Squiggles016 Some Triangles015 Some Rectangles014 Joy Division013 Study in Lightness012 Truchet tiles011 Triangles010 Shapes with Shapes009 Lines #3008 Perlin Noise Halftones007 '10 PRINT' Pattern006 Wandered Dot005 Wandering Dot004 Lines #2003 Lines #1002 Circles #2001 Circles #1
066 Side walk on a rainy day
function drawTiles({ stroke, strokeWidth, width, height, cols, rows, side }) {
const id = "a-tile";
const tiles = Array.from({ length: rows }).flatMap((_, j) =>
Array.from({ length: cols }).map((_, i) => {
if (i === 0 && j === 0) {
const gap = strokeWidth * 2.5;
return svg`<g id=${id}>
<rect width=${side} height=${side} fill="none" stroke=${stroke} stroke-width=${strokeWidth}></rect>
</g>`;
}
return svg`<use href=${`#${id}`} transform=${`translate(${i * side},${
j * side
})`}></use>`;
})
);
console.log(tiles);
return svg`<g class="tiles">
${tiles}
</g>`;
}
function drawDebugMarkers(debug, { width, height, data } = {}) {
if (!debug) return;
return data.map(
({ cx, cy }) => svg`<circle cx=${cx} cy=${cy} r="3" fill="#f0f"></circle>`
);
}
data = {
const rnd = CSRandom.createRandom(randomize);
const { width, height } = dimensions;
const size = Math.min(width, height);
const maxRippleSize = size / 3;
let points = Array.from({ length: drops }).map(() => [
rnd.range(0, width),
rnd.range(0, height)
]);
points = spreadPoints(points, { width, height });
points = points.map(([cx, cy]) => ({ cx, cy }));
const ripples = points.map((p) => {
const { cx, cy } = p;
return generateRandomRipple({
cx,
cy,
strength: math.clamp01(rnd.gaussian() * 0.25 * 0.5 + 0.5),
t: rnd.value(),
maxSize: maxRippleSize,
seed: rnd.value()
});
});
return ripples;
}
function spreadPoints(
points,
{ width, height, iterations = 12, gap = 10 } = {}
) {
const delaunay = d3.Delaunay.from(points);
const voronoi = delaunay.voronoi([0, 0, width, height]);
for (let k = 0; k < iterations; k++) {
for (let i = 0; i < delaunay.points.length; i += 2) {
const cell = voronoi.cellPolygon(i >> 1);
if (cell === null) continue;
const x0 = delaunay.points[i];
const y0 = delaunay.points[i + 1];
const [x1, y1] = d3.polygonCentroid(cell);
delaunay.points[i] = x0 + (x1 - x0) * 1;
delaunay.points[i + i] = y0 + (y1 - y0) * 1;
}
voronoi.update();
}
const centeredPts = []; //chunk(delaunay.points, 2);
for (let p of voronoi.cellPolygons()) {
const centroid = d3.polygonCentroid(p);
centeredPts.push(centroid);
}
// FIX: Sometimes centeredPts don't have any points
// For timebeing, return the points
if (centeredPts.length === 0) return points;
return centeredPts;
}
sampleRipples = {
const size = 400;
const cx = size / 2;
const cy = size / 2;
const ripple = generateRandomRipple({
cx,
cy,
maxSize: size / 2,
t: sampleT,
strength: sampleStrength
});
return svg`<svg viewBox=${[0, 0, size, size]} width=${size} height=${size}>
<rect width=${size} height=${size} fill=${palette.bg}></rect>
${drawRipples(ripple)}
</svg>`;
}
function drawRipples(specs, { strokeWidth } = {}) {
const { cx, cy, rings } = specs;
const ringElements = rings.map((spec) =>
drawDashedCircle({ ...spec, cx, cy, strokeWidth })
);
return svg`<g class="ripple">
${ringElements}
</g>`;
}
function generateRandomRipple({
cx,
cy,
t = 0.5, // 0...1
strength = 0.5, // 0...1
maxSize = 100,
seed = "1"
} = {}) {
if (cx === undefined || cy === undefined) {
throw Error("Required options missing: cx, cy");
}
const rippleRnd = CSRandom.createRandom(seed);
// more strength:
// - more rings
// - more spread, i.e. more max radius
const rings = Math.round(math.lerp(3, 7, strength));
const maxRadius = math.lerp(maxSize / 3, maxSize, strength);
const minRadius = math.lerp(1, maxRadius, t);
const ringsData = math
.linspace(rings, true)
.map((uv, i, arr) => {
const rt = delayedT(t, i + 1, rings);
if (rt === 1) return;
const r = math.lerp(0, maxRadius, rt) || 0.5;
const circum = 2 * Math.PI * r;
const dashT = math.mapRange(r, minRadius, maxRadius, 0, 1, true);
const dash = math.lerp(circum / 40, circum / 10, dashT);
const gap = dash * 3;
const offset = rippleRnd.range(0, circum / 3);
const dasharray = r < minRadius ? [] : [dash, gap, dash];
return {
r,
dasharray,
offset //circum
};
})
.filter(Boolean);
return { rings: ringsData, cx, cy };
}
function delayedT(t, i = 1, N = 1) {
const dt = 1 / N;
let u = math.mapRange(
t,
((i - 1) * dt) / 4,
// 1 - dt,
1 - ((N - i) * dt) / 2,
0,
1,
true
);
u = d3.easeSinOut(u);
return u;
}
function drawDashedCircle({
cx = 0,
cy = 0,
r = 100,
stroke = palette.fg,
dasharray = [2, 1],
offset = 0,
strokeWidth = 1,
linecap = "round"
} = {}) {
const totalDashLength = d3.sum(dasharray);
const circum = 2 * Math.PI * r;
const parts = Math.floor(circum / totalDashLength);
const partLength = circum / parts;
const adjustedDasharray = dasharray.map(
(d) => (d * partLength) / totalDashLength
);
return svg`<circle cx=${cx} cy=${cy} r=${r} fill="none"
stroke=${stroke}
stroke-width=${strokeWidth}
stroke-linecap=${linecap}
stroke-dasharray=${adjustedDasharray}
stroke-dashoffset=${offset}
></circle>`;
}
strokeWidthHalf = strokeWidth / 2
aspectRatio = 4 / 3
dimensions = {
const w = Math.max(480, width);
const h = Math.floor(width / aspectRatio);
const grid = squaresInRectangle(w, h, 6);
return {
aspectRatio,
width: grid.side * grid.cols,
height: grid.side * grid.rows,
...grid
};
}
palette = ({
bg: "hsl(0,0%,95%)",
fg: "hsl(0,0%,5%)"
})
svg = htl.svg
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