Hello,
I've been playing around with svg transformations and would like to
know if you have any recommendations.
I have the need to stack several transformations on top of each other
and I've tried benchmarking SVGMatrix against my own javascript matrix
class by running a loop several thousand times like this:
for (i=0;i<maxIterations;i++){
tmp = Math.random();
matrix.scale(tmp*10).skewX(tmp*11).rotate(tmp*12).skewY(tmp*13);
}
For maxIterations < 5000 to 6000 SVGMatrix is faster than my
javascript matrix class but above the javascript version pulls ahead.
I guess it's because the SVGMatrix methods returns a new matrix when
called (and therefore triggers the carbage-collector) while my methods
alters the current matrix. So I assume that in a somewhat normal
use-case using SVGMatrix should be the best option?
Another question I have is regarding the best way to assign a svg
element a new SVGMatrix.
Is something like:
var e = document.getElementById('erect1');
e.transform.baseVal.initialize(svg.createSVGTransformFromMatrix(matrix));
faster than?:
var e = document.getElementById('erect1');
e.setAttributeNS(null,"transformation",toStringSVGMatrix(matrix));
(where toStringSVGMatrix is a function that formats the matrix into a
string)
I would like to avoid the first one as I find it ugly
I've also noticed that SVGMatrix is absent from SVG Tiny 1.2. Is doing
it yourself in javascript the only option when using SVGT 1.2?
Cheers!
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