when object3D.set transform,I espect to get a constraint-euler-angle from the matrix3d.So I think Matrix3dUtil.decompose should support to this convert.I have figured out the code.Reference<3D Math Primer for Graphics And Game Development>
var sp:Number=-g;//m23
if(sp<=-1.0){
tx=-0.5*Math.PI;
}else if(sp>=1.0){
tx=0.5*Math.PI;
}else{
tx=Math.asin(sp);
}
if(sp>0&&(1.0-sp)
