HTML5 canvas Ring Tutorial

To create a ring shape with Konva, we can instantiate a Konva.Ring() object.

For a full list of attributes and methods, check out the Konva.Ring documentation.

Konva Ring Demoview raw
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.7.6/konva.min.js"></script>
<meta charset="utf-8">
<title>Konva Ring Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #F0F0F0;
}
</style>
</head>
<body>
<div id="container"></div>
<script>
var width = window.innerWidth;
var height = window.innerHeight;

var stage = new Konva.Stage({
container: 'container',
width: width,
height: height
});

var layer = new Konva.Layer();

var ring = new Konva.Ring({
x: stage.getWidth() / 2,
y: stage.getHeight() / 2,
innerRadius: 40,
outerRadius: 70,
fill: 'yellow',
stroke: 'black',
strokeWidth: 4
});

// add the shape to the layer
layer.add(ring);

// add the layer to the stage
stage.add(layer);
</script>

</body>
</html>