カラフル爆散

let vecLocation = [];

let vecVelocity = [];

let bigger;

const NUM = 255;

​

function setup() {

createCanvas(windowWidth, windowHeight);

frameRate(60);

for(let i = 0; i < NUM; i++){

vecLocation[i] = createVector(width/2, height/2);

vecVelocity[i] = createVector(random( -30, 30), random(-30, 30));

bigger = random(6.00, 10.00)

}

}

​

function draw() {

background(255);

noStroke();

for(let i = 0; i < NUM; i++){

ellipse(vecLocation[i].x, vecLocation[i].y, bigger, bigger);

vecLocation[i].add(vecVelocity[i]);

if(vecLocation[i].x > width || vecLocation[i].x < 0) { //OR

vecVelocity[i].x = vecVelocity[i].x * random(-1.100, -0.500);

}

if(vecLocation[i].y > height || vecLocation[i].y < 0) { //OR

vecVelocity[i].y = vecVelocity[i].y * random(-1.100, -0.500);

}

  fill(random(255), random(255),random(255),random(255.00));

}

}