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Multiples spirographs made in p5.js
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| license: gpl-3.0 | |
| height: 700 | |
| scrolling: no | |
| border: yes |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.14/p5.min.js"></script> | |
| <script src="sketch.js"></script> | |
| <button type="submit" onclick='generate()'>Generate other</button> | |
| <button type="submit" onclick="pause()">Continue/Pause</button> | |
| <style> body {padding: 0; margin: 0;} </style> | |
| </head> | |
| <body> | |
| </body> | |
| </html> |
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| let width = 800, | |
| height = 600; | |
| var p = false; | |
| function pause() { | |
| p = !p; | |
| } | |
| function Drawer(R, r, p) { | |
| var x = 0, | |
| y = 0, | |
| orig_x = 0, | |
| orig_y = 0, | |
| l = p/r, | |
| k = r/R; | |
| var alpha = 0; | |
| var divisor = 10; | |
| this.line = function (i) { | |
| x = width/2; | |
| y = height/2; | |
| x += scale*R*((1-k)*Math.cos(i) + l*k*cos(i*((1-k)/k))); | |
| y += scale*R*((1-k)*Math.sin(i) + l*k*sin(i*((1-k)/k))); | |
| stroke(cos(i)*255/2 + 255/2, | |
| sin(i)*255/2 + 255/2, | |
| (sin(i)+cos(i))*255/2 + 128, alpha); | |
| line(orig_x, orig_y, x, y); | |
| noStroke(); | |
| alpha = 255; | |
| orig_x = x; | |
| orig_y = y; | |
| return; | |
| } | |
| return this; | |
| } | |
| let scale = 2.5; | |
| let i = 0; | |
| var drawers = [] | |
| var x, y, z; | |
| function generate() { | |
| background(255); | |
| drawers = []; | |
| i = 0; | |
| for(var _ = 0; _ < Math.floor(Math.random()*10)+1; _++) { | |
| x = Math.floor(Math.random()*100); | |
| y = Math.floor(Math.random()*100); | |
| z = Math.floor(Math.random()*100); | |
| console.log("drawer " + _, x, y, z); | |
| drawers.push(new Drawer(x, y, z)); | |
| } | |
| } | |
| function setup() { | |
| createCanvas(width, height); | |
| cos = Math.cos; | |
| sin = Math.sin; | |
| stroke(255); | |
| fill(255); | |
| frameRate(30); | |
| generate(); | |
| } | |
| function draw() { | |
| //background(cos(i)*255/2 + 255/2, | |
| // sin(i)*255/2 + 255/2, | |
| // (sin(i)+cos(i))*255/2 + 128); | |
| if (!p) { | |
| for (j = i; j < 50 + i; j += 0.1) { | |
| drawers.forEach(function(dr) { | |
| dr.line(j); | |
| }); | |
| } | |
| i = j; | |
| } | |
| } |
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