P5.js Star Wobbling / Bairui Su

Creative generation toolmaker, believe that today's tool help shape tomorrow’s art. Creator Charming.js. Author @antv/g2@5.x.

Workspace

Public

Charming

Edited

Mar 16

Fork of Shader Art

1 star

{

const size = 800;

const vector = d3.range(5);

const matrix = d3.cross(vector, vector);

const grid = d3.scaleBand(vector, [0, size]).padding(0.4);

const length = grid.bandwidth() / 2;

const x = (d) => grid(d) + length;

const I = [0, 1, 2];

const C = ["#FD9DB9", "#FFD7E2", "#FFF"];

const L = [length, length / 1.38, length / 2.25].map((d) => d | 0);

const app = cm.app({

width: size,

height: size,

styleBackground: "rgb(255, 64, 119)",

loop: true,

draw: ({ time }) => [

cm.svg("g", matrix, {

transform: ([m, n]) => `translate(${x(m)}, ${x(n)})`,

children: I.map((i) => ([m, n]) => star({

length: L[i],

stroke: C[i],

time,

x: x(m),

y: x(n)

})) // prettier-ignore

})

]

});

invalidation.then(() => app.dispose());

return app.render();

}

function star({ length, stroke = "white", time, x, y }) {

const angles = d3.range(5).map((i) => ((Math.PI * 2) / 5) * i - Math.PI / 2);

const width = (length / 3) * 2;

const scale = (angle) => (t) => {

const x1 = x + Math.cos(angle) * t * length;

const y1 = y + Math.sin(angle) * t * length;

const a = time / 1200 + 0.005 * x1 + y1 * 0.008;

return 0.7 + 0.3 * Math.sin(10.0 * Math.sin(a));

};

return cm.svg("g", angles, {

transform: (d) => `rotate(${(d * 180) / Math.PI})`,

children: [(d) => line({ length, stroke, width, time, scale: scale(d) })]

});

}

function line({ length, width, stroke, scale }) {

const points = Array.from({ length }, (_, x) => [x, (width / 2) * scale(x / length / period)]); // prettier-ignore

const area = d3.area().x((d) => d[0]).y0((d) => d[1]).y1((d) => -d[1]); // prettier-ignore

return [

cm.svg("path", { fill: stroke, d: area(points) }),

cm.svg("circle", {

cx: length - 1,

fill: stroke,

r: points[length - 1][1]

})

];

}

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