setTransformData method
void
setTransformData({})
Implementation
void setTransformData(
{double rotation = 0.0, double scale = 1.0, double anchorX = 0.0, double anchorY = 0.0}) {
var round = radRound(rotation % twoPi); //TODO %
var scos = fastCos(round) * scale;
var ssin = fastSin(round) * scale;
var tx = -scos * anchorX + ssin * anchorY;
var ty = -ssin * anchorX - scos * anchorY;
data.set(scos, ssin, tx, ty);
}