要使用Konva创建一个圆形, 我们可以实例化一个Konva.Circle()对象.

有关属性和方法的完整列表,请参阅Konva.Circle文档

Konva Circle Demo 点击查看

<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.4.0/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>

圆形

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