void Refraction::setPostTransfoMat(const Mat4d& m)
{
postTransfoMat=m;
invertPostTransfoMat=m.inverse();
postTransfoMatf.set(m[0], m[1], m[2], m[3], m[4], m[5], m[6], m[7], m[8], m[9], m[10], m[11], m[12], m[13], m[14], m[15]);
invertPostTransfoMatf.set(invertPostTransfoMat[0], invertPostTransfoMat[1], invertPostTransfoMat[2], invertPostTransfoMat[3],
invertPostTransfoMat[4], invertPostTransfoMat[5], invertPostTransfoMat[6], invertPostTransfoMat[7],
invertPostTransfoMat[8], invertPostTransfoMat[9], invertPostTransfoMat[10], invertPostTransfoMat[11],
invertPostTransfoMat[12], invertPostTransfoMat[13], invertPostTransfoMat[14], invertPostTransfoMat[15]);
}
// Set the matrix to use to post process J2000 positions before storing in the trail
void TrailGroup::setJ2000ToTrailNative(const Mat4d& m)
{
j2000ToTrailNative=m;
j2000ToTrailNativeInverted=m.inverse();
}