void getCalcPoint(Point3f pt) {

		pt.sub(center);
		if (isEccentric)
			eccentricityMatrixInverse.transform(pt);
		if (isAnisotropic) {
			pt.x /= anisotropy[0];
			pt.y /= anisotropy[1];
			pt.z /= anisotropy[2];
		}
	}