Kinetic JS - 如何获取组成员的坐标(拖动组后)？

// 创建舞台
var stage = new Kinetic.Stage({
  container: 'container',
  width: 578,
  height: 200
});

// 创建层
var layer = new Kinetic.Layer();

// 创建组
var group = new Kinetic.Group({
  x: 100,
  y: 50,
  draggable: true
});

// 创建形状
var circle = new Kinetic.Circle({
  x: 50,
  y: 50,
  radius: 30,
  fill: 'red'
});

// 将形状添加到组中
group.add(circle);

// 将组添加到层中
layer.add(group);

// 将层添加到舞台中
stage.add(layer);

// 获取组成员的坐标
group.on('dragend', function() {
  var absolutePosition = group.getAbsolutePosition();
  var x = absolutePosition.x;
  var y = absolutePosition.y;
  console.log('Group member coordinates: x=' + x + ', y=' + y);
});