mapv
Version:
a library of geography visualization
69 lines (51 loc) • 1.62 kB
HTML
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
html, body {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
}
#canvas {
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script type="text/javascript" src="../build/mapv.js"></script>
<script type="text/javascript">
var canvas = document.querySelector('#canvas');
canvas.width = document.body.offsetWidth;
canvas.height = document.body.offsetHeight;
var ctx = canvas.getContext('2d');
var data = [];
var randomCount = 50;
while (randomCount--) {
// 添加三角形
data.push({
geometry: {
type: 'Polygon',
coordinates: [
[[ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()], [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()], [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()]]
]
},
count: 30 * Math.random()
});
}
var dataSet = new mapv.DataSet(data);
var options = {
fillStyle: 'rgba(55, 55, 250, 0.2)',
strokeStyle: 'rgba(55, 55, 250, 0.3)',
lineWidth: 1,
draw: 'simple'
}
mapv.canvasResolutionScale(ctx);
mapv.canvasDrawSimple.draw(ctx, dataSet, options);
</script>
</body>
</html>