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part7ad.html
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<!DOCTYPE html>
<html>
<title>Creative Coding Yea!</title>
<head>
<meta charset="utf-8">
<script language="javascript" src="js/creative_coding.js"></script>
<script language="javascript" src="js/canvas.js"></script>
<link rel="stylesheet" href="css/reset.css" type="text/css" media="screen" />
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen" />
</head>
<body>
<script>
var ctx = createCanvas("canvas1");
var number_of_balls = 10;
var balls = [];
var radius = 200;
ctx.lineWidth = 1;
ctx.background(0);
// push a ball and it's values into the array
for (var i = 0; i < number_of_balls; i++) {
addBall(i);
}
function addBall(i){
var ball = {
x: i * w/number_of_balls,
y: random(h),
speed_x: random(1,4),
speed_y: random(1,2),
amplitude: random(h/10,h/4),
size: 2,
colour: rgba(255, 0.8),
angle: random(360)
}
balls.push(ball);
}
function draw(){
//ctx.background(0, 0.01);
moveBall();
drawBall();
}
function moveBall(){
for (var i = 0; i < balls.length; i++) {
var b = balls[i];
b.angle += b.speed_y;
b.rotation += 2;
b.x = w/2 + Math.sin(radians(b.angle))*w/2;
b.y = h/2 + Math.sin(radians(b.angle))*b.amplitude;
b.x+=b.speed_x;
if(bounce(b.x, 0,w)) b.speed_x *=-1;
}
}
function drawBall(){
for (var i = 0; i < balls.length; i++) {
var b = balls[i];
ctx.fillStyle = b.colour;
ctx.fillEllipse(b.x, b.y, b.size);
}
}
</script>
</body>
</html>