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Copy path绘制七巧板.html
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绘制七巧板.html
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<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="utf-8">
<title>Canvas绘制七巧板</Canvas></title>
</head>
<body>
<canvas id="canvas" width="400" height="300"
style="border: 1px solid #aaa; display: block;margin: 50px auto;"></canvas>
<script type="text/javascript">
let tangram = [
{ p: [{ x: 0, y: 0 }, { x: 800, y: 0 }, { x: 400, y: 400 }], color: "#caff67" },
{ p: [{ x: 0, y: 0 }, { x: 400, y: 400 }, { x: 0, y: 800 }], color: "#67becf" },
{ p: [{ x: 800, y: 0 }, { x: 800, y: 400 }, { x: 600, y: 600 }, { x: 600, y: 200 }], color: "#ef3d61" },
{ p: [{ x: 600, y: 200 }, { x: 600, y: 600 }, { x: 400, y: 400 }], color: "#f9f51a" },
{ p: [{ x: 400, y: 400 }, { x: 600, y: 600 }, { x: 400, y: 800 }, { x: 200, y: 600 }], color: "#a594c0" },
{ p: [{ x: 200, y: 600 }, { x: 400, y: 800 }, { x: 0, y: 800 }], color: "#fa8ecc" },
{ p: [{ x: 800, y: 400 }, { x: 800, y: 800 }, { x: 400, y: 800 }], color: "#f6ca29" },
];
window.onload = function () {
var canvas = document.getElementById("canvas");
canvas.width = 800;
canvas.height = 800;
var context = canvas.getContext("2d");
//使用canvas绘制
for (var i = 0; i < tangram.length; ++i)
draw(tangram[i], context);
}
function draw(piece, cxt) {
cxt.beginPath()
cxt.moveTo(piece.p[0].x, piece.p[0].y);
for (var i = 0; i < piece.p.length; ++i)
cxt.lineTo(piece.p[i].x, piece.p[i].y);
cxt.closePath();
cxt.fillStyle = piece.color;
cxt.fill();
cxt.strokeStyle = "black";
cxt.lineWidth = 3;
cxt.stroke();
}
</script>
</body>
</html>