mapv
Version:
a library of geography visualization
91 lines (74 loc) • 2.39 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 = [
{
geometry: {
type: 'Point',
coordinates: [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()]
},
fillStyle: 'red',
size: 30
},
{
geometry: {
type: 'Point',
coordinates: [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()]
},
fillStyle: 'blue',
size: 20
},
{
geometry: {
type: 'Point',
coordinates: [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()]
},
fillStyle: 'rgba(255, 255, 50, 0.5)',
size: 90
}
];
var randomCount = 300;
while (randomCount--) {
data.push({
geometry: {
type: 'Point',
coordinates: [ctx.canvas.width * Math.random(), ctx.canvas.height * Math.random()]
},
fillStyle: 'rgba(' + ~~(Math.random() * 255) + ', ' + ~~(Math.random() * 255) + ', ' + ~~(Math.random() * 255) + ', 0.8)',
size: Math.random() * 30 + 5
});
}
var dataSet = new mapv.DataSet(data);
var options = {
fillStyle: 'rgba(55, 50, 250, 0.3)',
shadowColor: 'rgba(55, 50, 250, 0.8)',
shadowBlur: 10,
draw: 'simple'
}
mapv.canvasResolutionScale(ctx);
mapv.canvasDrawSimple.draw(ctx, dataSet, options);
</script>
</body>
</html>