Created
January 6, 2019 04:53
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<head> | |
<title>Random Sierpinsky</title> | |
</head> | |
<body> | |
</body> | |
<script src='https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.7.2/p5.js'></script> | |
<script src='https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.7.2/addons/p5.dom.min.js'></script> | |
<script> | |
'use strict'; | |
function getRandomInt(min, max) { | |
min = Math.ceil(min); | |
max = Math.floor(max); | |
return Math.floor(Math.random() * (max - min + 1)) + min; | |
} | |
var WIDTH = 400, | |
HEIGHT = 400; | |
var NPOINTS = 1; | |
var tri = [ | |
[0, -.366-.25], | |
[-.5, .5-.25], | |
[.5, .5-.25]]; | |
var randomPoints = []; | |
var slider; | |
var button; | |
var npoints_elements; | |
function setup() { | |
slider = createSlider(1, 100, 1); | |
createCanvas(WIDTH, HEIGHT); | |
for (let i = 0; i < 100; i++) { | |
randomPoints.push([0, 0]) | |
} | |
button = createButton('Limpiar'); | |
button.mousePressed(clean); | |
npoints_elements = createElement("p", 'Cantidad de puntos: ' + NPOINTS); | |
} | |
function clean() { | |
background(255); | |
} | |
function draw() { | |
NPOINTS = slider.value(); | |
npoints_elements.html(`Cantidad de puntos: ${NPOINTS}`); | |
translate(WIDTH/2, HEIGHT/2); | |
scale(WIDTH/2, HEIGHT/2); | |
noStroke() | |
for (let i = 0; i < NPOINTS; i++) { | |
fill(0, 255*i/NPOINTS, 150 + 105*i/NPOINTS); | |
ellipse(...randomPoints[i], 0.01); | |
let randomVector = getVector(getRandomInt(1, 6), randomPoints[i]); | |
randomPoints[i][0] += randomVector[0]; | |
randomPoints[i][1] += randomVector[1]; | |
} | |
} | |
function calculateDistance(a, b) { | |
let _a = a[0]-b[0]; | |
let _b = a[1]-b[1]; | |
return [_a/2, _b/2]; | |
} | |
function getVector(randomValue, currentPosition) { | |
if ((randomValue == 3) || (randomValue == 6)) { | |
return calculateDistance(tri[0], currentPosition) | |
} else if ((randomValue == 2) || (randomValue == 5)) { | |
return calculateDistance(tri[2], currentPosition) | |
} else { | |
return calculateDistance(tri[1], currentPosition) | |
} | |
} | |
</script> | |
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