RobinNixon
41 lines
1.0 KiB
HTML
41 lines
1.0 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Scaling</title>
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<script src='OSC.js'></script>
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</head>
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<body>
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<canvas id='mycanvas' width='420' height='200'></canvas>
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<script>
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canvas = O('mycanvas')
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context = canvas.getContext('2d')
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S(canvas).background = 'lightblue'
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myimage = new Image()
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myimage.src = 'image.png'
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myimage.onload = function()
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{
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context.drawImage(myimage, 0, 0)
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context.scale(3, 2)
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// Alternative to above using transform()
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// context.transform(3, 0, 0, 2, 0, 0)
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context.drawImage(myimage, 40, 0)
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context.scale(.33, .5)
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context.drawImage(myimage, 0, 100)
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// Improved version using save() and restore()
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//
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// context.drawImage(myimage, 0, 0)
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// context.save()
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// context.scale(3, 2)
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// context.drawImage(myimage, 40, 0)
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// context.restore()
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// context.drawImage(myimage, 0, 100)
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}
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</script>
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</body>
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</html> |