HTML5 canvas Circle Tutorial

To create a circle with Konva, we can instantiate a Konva.Circle() object.

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

Konva Circle Demoview raw
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.6.0/konva.min.js"></script>
<meta charset="utf-8">
<title>Konva Circle 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 circle = new Konva.Circle({
x: stage.getWidth() / 2,
y: stage.getHeight() / 2,
radius: 70,
fill: 'red',
stroke: 'black',
strokeWidth: 4
});
// add the shape to the layer
layer.add(circle);
// add the layer to the stage
stage.add(layer);
</script>
</body>
</html>