d3.js d3.transform 方法移除的解决方案

rt

d3.transform在新版本中移除

需要自行写出该功能

function getTranslation(transform) {
  // Create a dummy g for calculation purposes only. This will never
  // be appended to the DOM and will be discarded once this function
  // returns.
  var g = document.createElementNS("http://www.w3.org/2000/svg", "g");

  // Set the transform attribute to the provided string value.
  g.setAttributeNS(null, "transform", transform);

  // consolidate the SVGTransformList containing all transformations
  // to a single SVGTransform of type SVG_TRANSFORM_MATRIX and get
  // its SVGMatrix.
  var matrix = g.transform.baseVal.consolidate().matrix;

  // As per definition values e and f are the ones for the translation.
  return [matrix.e, matrix.f];
}

console.log(getTranslation("translate(20,30)"))  // simple case: should return [20,30]
console.log(getTranslation("rotate(45) skewX(20) translate(20,30) translate(-5,40)"))