76 lines
1.9 KiB
HTML
76 lines
1.9 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>MDN Canvas Tutorial</title>
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<style type="text/css">
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canvas {
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border: 1px solid black;
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}
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</style>
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</head>
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<body>
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<canvas id="tutorial0" width="150" height="150"></canvas>
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<canvas id="tutorial1" width="150" height="150"></canvas>
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<canvas id="tutorial2" width="150" height="150"></canvas>
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<canvas id="tutorial3" width="150" height="150"></canvas>
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<script type="text/javascript">
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function draw0() {
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var ctx = document.getElementById('tutorial0').getContext('2d');
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ctx.fillStyle = 'rgb(200, 0, 0)';
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ctx.fillRect(10, 10, 55, 50);
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ctx.fillStyle = 'rgba(0, 0, 200, 0.5)';
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ctx.fillRect(30, 30, 55, 50);
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}
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function draw1() {
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var ctx = document.getElementById('tutorial1').getContext('2d');
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ctx.fillRect(25, 25, 100, 100);
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ctx.clearRect(45, 45, 60, 60);
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ctx.strokeRect(50, 50, 50, 50);
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}
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function draw2() {
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var ctx = document.getElementById('tutorial2').getContext('2d');
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ctx.beginPath();
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ctx.arc(75, 75, 50, 0, Math.PI*2, true);
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ctx.moveTo(110, 75);
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ctx.arc(75, 75, 35, 0, Math.PI, false);
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ctx.moveTo(65, 65);
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ctx.arc(60, 65, 5, 0, Math.PI*2, true);
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ctx.moveTo(95, 65);
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ctx.arc(90, 65, 5, 0, Math.PI*2, true);
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ctx.stroke();
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}
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function draw3() {
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var ctx = document.getElementById('tutorial3').getContext('2d');
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ctx.beginPath();
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ctx.moveTo(25, 25);
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ctx.lineTo(105, 25);
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ctx.lineTo(25, 105);
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ctx.fill();
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ctx.beginPath();
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ctx.moveTo(125, 125);
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ctx.lineTo(125, 45);
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ctx.lineTo(45, 125);
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ctx.closePath();
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ctx.stroke();
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}
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window.addEventListener('load', function() {
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draw0();
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draw1();
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draw2();
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draw3();
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}, false);
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</script>
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</body>
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</html>
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