Sketch by Rex

let particles = []

let colors = "083d77-ee964b-042a2b-5eb1bf-cdedf6-ef7b45-d84727-ffdde2-efd6d2-ff8cc6-de369d".split("-").map(a=>"#"+a)

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(0);

  for(let i=0;i<300;i++){

  let newP = new Particle({

    //de bug 時可以用滑鼠數值來 print 監測

    p:createVector(random(width),random(height)),

    //p:createVector(0,i),

    //初始位置改成線

    // v:createVector(random(-1,1),random(-1,1)),

    //p: createVector(width/2,height/2),

    v: createVector(3,3).rotate(random()*2*PI),

    a: createVector(0,0),

    r: random(30)*random(),

    clr: random(colors)

    //random() = 0~1

  })

  particles.push(newP)

  // p = 位置 ， v =速度 a = 加速度

  //p = createVector(width/2,height/2);

  //v = createVector(1,0);

  //a = createVector(0,0.1);  

}

}

​

function draw() {

    particles.forEach(p=>{

    p.update()

    p.draw()

      }

                     )

  //p.add(v)

  //v.add(a)

  //v.x+=sin(p.y/8)

  //v.y+=cos(p.y/8)

  //v.x = random(-5,10) 

  //v.y = random(-5,10) 

    //r = random(-5,10) 

  //fill(255,p.y/3,255)

  //noStroke()

  //circle(p.x,p.y, frameCount);

}