要使用Konva创建一个简单的线条, 我们可以实例化一个Konva.Line()对象.

有关属性和方法的完整列表,请参阅Konva.Line文档

Konva Simple-Line 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 Simple Line 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 redLine = new Konva.Line({
  points: [5, 70, 140, 23, 250, 60, 300, 20],
  stroke: 'red',
  strokeWidth: 15,
  lineCap: 'round',
  lineJoin: 'round'
});
// dashed line
var greenLine = new Konva.Line({
  points: [5, 70, 140, 23, 250, 60, 300, 20],
  stroke: 'green',
  strokeWidth: 2,
  lineJoin: 'round',
  /*
   * line segments with a length of 33px
   * with a gap of 10px
   */
  dash: [33, 10]
});
// complex dashed and dotted line
var blueLine = new Konva.Line({
  points: [5, 70, 140, 23, 250, 60, 300, 20],
  stroke: 'blue',
  strokeWidth: 10,
  lineCap: 'round',
  lineJoin: 'round',
  /*
   * line segments with a length of 29px with a gap
   * of 20px followed by a line segment of 0.001px (a dot)
   * followed by a gap of 20px
   */
  dash: [29, 20, 0.001, 20]
});
/*
 * since each line has the same point array, we can
 * adjust the position of each one using the
 * move() method
 */
redLine.move({
  x : 0,
  y : 5
});
greenLine.move({
  x : 0,
  y : 55
});
blueLine.move({
  x : 0,
  y : 105
});
layer.add(redLine);
layer.add(greenLine);
layer.add(blueLine);
// add the layer to the stage
stage.add(layer);
</script>
</body>
</html>

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