motion/HLV3Hmotion10.html at master · cha-art-dev/motion · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
<html>
<head>
  <title>Art / Dev - Motion 2</title>
  <script src="p5.min.js"></script>
  <script>
  var IMAGE_WIDTH = 640;    // Don't change this.
  var IMAGE_HEIGHT = 640;   // Don't change this.

  var particleCount = 150;
  var particles = [];
  var particleCounter = 0;
  var time = 0;

  //=============== DO ALL YOUR WORK HERE =======================

  function setup() {
    createCanvas(IMAGE_WIDTH, IMAGE_HEIGHT); // don't change this
    noCursor();
     for (var i=0; i<particleCount; i++) {

       particles[i] = {
        //  x:320 + magnitude*cos(angle),
        //  y:320 + magnitude*sin(angle),
         r: random(5,12),
         s: random(0,50),
         hue: random(0,1)
        //  x:random(1,640),
        //  y:random(1,640),
        };
     }
     noStroke()
     colorMode(HSB, 1)
  }

  function draw() {
    fill(.5,0,.4,.4)
    rect(0,0,width,height)
    var currentParticle = particles[particleCounter]
    var speed = random(0,7)
    var angle = random(0,2*PI)
    time += .025
    currentParticle.x = mouseX
    currentParticle.y = mouseY
    currentParticle.vx = speed*cos(angle)
    currentParticle.vy = speed*sin(angle)
    currentParticle.hue = particleCounter/particleCount//*2*PI/particleCount)

    particleCounter = (particleCounter+1) % particleCount;
    particles.forEach(calculateParticle)
    particles.forEach(drawParticle)
}

  function calculateParticle(particle) {
    particle.x += particle.vx  // this is the rotation of the particles
    particle.y += particle.vy
    particle.vx += .1*particle.vy
    particle.vy += -.1*particle.vx
    particle.vy -= .25
  }

  function drawParticle(particle) {
    fill(particle.hue,.5,1,.25)
    ellipse(particle.x,particle.y,particle.r,particle.r)
  }

  // =============== STOP WORKING HERE ==========================

  </script>
  <style>
    body { padding: 0; margin: 5% 0 0; background-color: #666;}
    canvas { margin: 0 auto; display:block; }
  </style>
</head>
<body>
</body>
</html>