获取点击节点在d3树和中心的坐标 [英] Get coordinates of clicked on node in d3 tree and centre

问题描述

我有一个点击事件侦听器的树。我想在用户单击的节点上重新居中我的树。

I have a tree with on click event listeners. I'd like to re-centre my tree on whichever node the user clicked.

如何获取点击事件中树节点的实际x / y值？

How do I get the actual x / y values of a tree node inside the click event?

推荐答案

要获得x / y，必须通过您已应用的任何翻译将节点翻译回来：

To get the x/y you must translate the nodes back through whatever translation you've already applied:

http://jsfiddle.net/WLaVU 显示了一个工作示例

// click event handler 
function click_handler(d)
{
  // these dudes must be smooshed back through the same transform
  var x = xs(d);
  var y = ys(d);

  // normalize for width/height
  var new_x = (-x + (width / 2));
  var new_y = (-y + (height / 2));

  // move the main container g
  svg.attr("transform", "translate(" + new_x + "," + new_y + ")");
}

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