D3 4.9.1 returns different value for .style(“transform”) #135
Description
In d3 4.9.1 if I make call to get transform of element that has style like this:
<g style="transform: translateX(3.84559px);"></g>
Operation:
d3.select(this).style("transform")
Output in d3v4.9.1 :
translateX(3.84559px)
But in d3v4.8.0 it has different output:
matrix(1, 0, 0, 1, 3.84559, 0)
Is there any change in this new version that is causing this issue?
I was having function to find different parameters of transform property, which is now broken:
contents.getTransformation = function (transform) {
// console.log(transform);
var g = document.createElementNS("http://www.w3.org/2000/svg", "g");
g.setAttributeNS(null, "transform", transform);
var matrix = g.transform.baseVal.consolidate().matrix;
var a = matrix.a;
var b = matrix.b;
var c = matrix.c;
var d = matrix.d;
var e = matrix.e;
var f = matrix.f;
var scaleX = Math.sqrt(a * a + b * b);
var scaleY = Math.sqrt(c * c + d * d);
var skewX = a * c + b * d;
if (scaleX) {
a /= scaleX;
b /= scaleX;
}
if (skewX) {
c -= a * skewX;
d -= b * skewX;
}
if (scaleY) {
c /= scaleY;
d /= scaleY;
skewX /= scaleY;
}
if (a * d < b * c) {
a = -a;
b = -b;
skewX = -skewX;
scaleX = -scaleX;
}
return {
translateX: e,
translateY: f,
rotate: Math.atan2(b, a) * Math.PI / 180,
skewX: Math.atan(skewX) * Math.PI / 180,
scaleX: scaleX,
scaleY: scaleY
};
};
Ref: https://stackoverflow.com/questions/38224875/replacing-d3-transform-in-d3-v4