Web developer and autodidact with an interest in creative coding.
Random TilesLots of DotsPlots, Disassemble!Endless ProgressColonyWhat Goes Up ...VinesContractions 3Contractions 2ExtrusionPressurePulseEmbedding a canvas into an SVGSand SimTangent: DropsTangent: GlitchFPS Downsampling with CAValking WoronoiSeven, Eight, FourteenSix, Seven, EightDelaunator ShardsArc FlipSizzle 2SizzleDecimals 4ShimmyTwirlin' 2Twirlin'canvas-fly-flightCollider SparksSimplex Noise 2Simplex NoiseGhost LettersCloudy FillCircle SegmentsFlippin' ThalesAttractionCircumscribed SquaresHexagon 3Feedback FadeRectangle Curve 3Bulge IllusionGetting Artsy With LloydRectangle Curve 2Per-Layer Fadeout In 2D CanvasVoronoi BorderlandsTriangles And CirclesSplitting LinesStacking Polygons In A CircleHello QBasic-ish!Decimals 2DecimalsDecimals 3GlitchConnections 1Connections 2Rectangle Curve
Contractions
canvas = {
const {
size: s = 600,
steps = 500,
lines = 17,
loopLength = 2000,
color = '#000',
background = '#fff',
lineWidth = 1,
resolution = window.devicePixelRatio,
} = {};
const TAU = Math.PI * 2;
const ctx = DOM.context2d(s, s, resolution);
ctx.canvas.style.maxWidth = '100%';
ctx.fillStyle = background;
ctx.lineWidth = lineWidth;
ctx.strokeStyle = color;
while(true) {
draw(Date.now() / loopLength % 1);
yield ctx.canvas;
}
function draw(time) {
ctx.fillRect(0, 0, s, s);
ctx.beginPath();
for(let i = 1; i <= lines; i++) {
const t2 = i / lines;
for(let j = 0; j < steps; j++) {
const t = j / steps;
let x = s/2, y = s/2;
for(const [_x, _y] of [
rotate(200, t),
rotate(40 + 20 * Math.sin(t * TAU * 5), t2 - time * (2/lines)),
rotate(10, t * 3 - time)
]) x += _x, y += _y;
t ? ctx.lineTo(x, y) : ctx.moveTo(x, y);
}
ctx.closePath();
}
ctx.stroke();
}
function rotate(r, t) {
const a = t * TAU;
return [ r * Math.cos(a), r * Math.sin(a) ];
}
}
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