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RobinNixon 53063593e3 Final
Final
2020-12-10 13:51:13 +00:00

38 lines
948 B
HTML

<!DOCTYPE html>
<html>
<head>
<title>Rotating (b)</title>
<script src='OSC.js'></script>
</head>
<body>
<canvas id='mycanvas' width='500' height='140'></canvas>
<script>
canvas = O('mycanvas')
context = canvas.getContext('2d')
S(canvas).background = 'lightblue'
myimage = new Image()
myimage.src = 'image.png'
myimage.onload = function()
{
w = myimage.width
h = myimage.height
for (j = 0 ; j < 4 ; ++j)
{
context.save()
context.translate(20 + w / 2 + j * (w + 20), 20 + h / 2)
// Alternative to the above using transform()
// context.transform(1, 0, 0, 1, 20 + w / 2 + j * (w + 20), 20 + h / 2)
context.rotate(Math.PI / 5 * j)
context.drawImage(myimage, -(w / 2), -(h / 2))
context.restore()
}
}
</script>
</body>
</html>