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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Pin</title>
<script src="../dist/zrender.js"></script>
</head>
<body>
<div id="main" style="width:1000px;height:500px;"></div>
<script type="text/javascript">
var zr = zrender.init(document.getElementById('main'));
var Pin = zrender.Path.extend({
type: 'pin',
shape: {
// x, y on the cusp
x: 0,
y: 0,
width: 0,
height: 0
},
buildPath: function (path, shape) {
var x = shape.x;
var y = shape.y;
var w = shape.width / 5 * 3;
// Height must be larger than width
var h = Math.max(w, shape.height);
var r = w / 2;
// Dist on y with tangent point and circle center
var dy = r * r / (h - r);
var cy = y - h + r + dy;
var angle = Math.asin(dy / r);
// Dist on x with tangent point and circle center
var dx = Math.cos(angle) * r;
var tanX = Math.sin(angle);
var tanY = Math.cos(angle);
path.arc(
x, cy, r,
Math.PI - angle,
Math.PI * 2 + angle
);
var cpLen = r * 0.6;
var cpLen2 = r * 0.7;
path.bezierCurveTo(
x + dx - tanX * cpLen, cy + dy + tanY * cpLen,
x, y - cpLen2,
x, y
);
path.bezierCurveTo(
x, y - cpLen2,
x - dx + tanX * cpLen, cy + dy + tanY * cpLen,
x - dx, cy + dy
);
path.closePath();
}
});
var pin = new Pin({
shape: {
x: 100,
y: 100,
width: 20,
height: 40
},
scale: [2, 2]
});
zr.add(pin);
</script>
</body>
</html>
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