In New Zealand being kid of human.
We might make mistakes but we will make other things too. -
Michael Joseph Savage
function draw(p8g){
const { background, ellipse, fill, noSmooth, noStroke, stroke, strokeWeight, rectMode, CENTER, CORNER, point} = p8g;
const {sin, cos, tan, abs, random} = Math;
// setup code
if( window.setup == true){
window.setup = false // gets reset when cancelAnimationFrame() is called in createCanvas()
window.tick = 0
}
// noStroke()
noSmooth()
background(0,0,70,5) // '#00004605'
for (let iteration = 2e4; iteration--;) {
// Calculate the value of p using trigonometric functions and time
let angle = tan(tan(iteration + sin(window.tick / 1e9)) * iteration)
// Calculate the values of x, y, and z using trigonometric functions and p
let z = sin(iteration) / 40
let x = v + sin(angle ) / z
let y = v + cos(angle ) / z
let scaled = 0.35
let circleSize = (angle % 85 / 8 + 1) * scaled;
strokeWeight(scaled)
ellipse(x, y, circleSize, circleSize );
}
window.tick += 0.05
}
window.setup
w = width
h = w
v = w/2
// Set tick to 0 initially for animation
window.tick = 0
{
boom
window.setup = true
}
// setup and draw are both passed a `p8g` object.
// This means you can use destructuring assignment
// in the parameters to avoid having to write
// `p8g.fill`, `p8g.rect`, etc.
//
// Note that unlike P5, `fill`, `stroke` and other
// settings are not kept between draw calls,
// so initializing those once in setup won't work!
// The reason for this is that p8g does not have
// its own `setup` function, just the `draw` loop.
function setup(p8g) {
// initiate background colour
p8g.background(0x00, 0x00, 0x36); // 000046
}
// The normal p8g approach would be to assign a draw function to
// the p8g object, but because it's imported through skypack
// at runtime the p8g module is read-only. So instead we use
// this workaround.
createCanvas = {
const p8g = await import('https://cdn.skypack.dev/p8g.js@0.8.3?min');
let canvas = null;
let _draw = () => {};
let _setup = () => {};
let request = null;
let state = null;
return async function createCanvas(width, height, draw = _draw, setup = _setup, opts = {}) {
const {
css
} = opts
// cancel previous loop
if (request) cancelAnimationFrame(request);
if(typeof _setup !== "function") throw new Error("setup is not a function!");
if(typeof _draw !== "function") throw new Error("draw is not a function!")
_setup = setup;
_draw = draw;
if (!canvas) {
canvas = await html`${p8g.createCanvas(width, height)}`;
}
if (typeof css === "string") canvas.style = css;
state = setup(p8g);
// Draw Loop
request = requestAnimationFrame(function tick() {
draw(p8g, state);
request = requestAnimationFrame(tick);
});
invalidation.then(() => cancelAnimationFrame(request));
return canvas;
}
}
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