31:T65e,p5(sketch => { const height = width * 9 / 16; const random_length = randomIntFromInterval(height / 14, height / 7); const random_colour = randomIntFromInterval(0, width); let centerX = width / 2; let centerY = height / 2; let t = 0; const max_t = 500; sketch.setup = function() { sketch.createCanvas(width, height); sketch.colorMode(sketch.HSB, width, height, 100); sketch.fill(10); sketch.rect(0, 0, width, height); sketch.frameRate(30); }; sketch.draw = function() { const angle = sketch.TWO_PI / object.vertex; sketch.translate(width / 2, height / 2); const master_angle = sketch.TWO_PI / max_t; centerX = sketch.cos(master_angle * t) * height / 3; centerY = sketch.sin(master_angle * t) * height / 3; sketch.noFill(); sketch.stroke(random_colour, centerY, 100); sketch.strokeWeight(0.1); sketch.translate(centerX, centerY); sketch.beginShape(); // it needs a starting point sketch.curveVertex(sketch.cos(angle * (random_length - 1)) * random_length, sketch.sin(angle * (random_length - 1)) * random_length); for (var i = 0; i < object.vertex; i++) { const pt_x = sketch.cos(angle * i) * random_length; const pt_y = sketch.sin(angle * i) * random_length; sketch.curveVertex(pt_x, pt_y); } sketch.curveVertex(sketch.cos(0) * random_length, sketch.sin(0) * random_length); // end point sketch.curveVertex(sketch.cos(angle) * random_length, sketch.sin(angle) * random_length); sketch.endShape(); t = t + 1; if (t === max_t) { t = 0; } } })32:[] 2f:{"title":"#genuary 2021 ~ Do some golf!","cells":[{"id":0,"value":"md`# #genuary 2021 ~ Do some golf!`","pinned":false,"hidden":false,"mode":"ojs"},{"id":174,"value":"md`Genuary https://genuary2021.github.io/prompts Promt 5 - Do some code golf! How little code can you write to make something interesting? Share the sketch and its code together if you can.`","pinned":false,"hidden":false,"mode":"ojs"},{"id":177,"value":"md`To be honest... I don't think the code is very brief :). It was also partially based in this Generative Design exercise http://www.generative-gestaltung.de/2/sketches/?01_P/P_2_2_3_01`","pinned":false,"hidden":false,"mode":"ojs"},{"id":144,"value":"viewof object = form(html``)","pinned":false,"hidden":false,"mode":"ojs"},{"id":164,"value":"object.vertex","pinned":false,"hidden":false,"mode":"ojs"},{"id":7,"value":"$31","pinned":false,"hidden":false,"mode":"ojs"},{"id":107,"value":"// from https://stackoverflow.com/questions/4959975/generate-random-number-between-two-numbers-in-javascript\n\nfunction randomIntFromInterval(min, max) {\n return Math.floor(Math.random() * (max - min + 1) + min);\n}","pinned":false,"hidden":false,"mode":"ojs"},{"id":2,"value":"import {p5} from \"@tmcw/p5\";","pinned":false,"hidden":false,"mode":"ojs"},{"id":145,"value":"import {form} from \"@mbostock/form-input\"","pinned":false,"hidden":false,"mode":"ojs"}],"files":"$W32","stdlib":"1","titling":"auto"}