updates to CameraGroundMap.cpp

      double *dx, double *dy) {

    //  TODO  add a check to make sure p_pB and p_lookJ have been set. 

    // 0.  calculate or save from previous GetXY call lookB.  We need ToJ2000Partial that is 

    // 0.  calculate or save from previous GetXY call lookB.  We need toJ2000Partial that is 

    //     like a derivative form of J2000Vector  

    // 1.  we will call d_lookJ = bodyrot->ToJ2000Partial (Make sure the partials are correct for the target body

    // 1.  we will call d_lookJ = bodyrot->toJ2000Partial (Make sure the partials are correct for the target body

    //             orientation matrix.

    // 2.  we will then call d_lookC = instRot->ReferenceVector(d_lookJ)

    // 3.  the rest should be the same.

    // Rotate body-fixed look vector into J2000 through the derivative rotation

    SpiceRotation *bodyRot = p_camera->bodyRotation();

    SpiceRotation *instRot = p_camera->instrumentRotation();

    std::vector<double> dlookJ = bodyRot->ToJ2000Partial(p_pB, varType, coefIndex);

    std::vector<double> dlookJ = bodyRot->toJ2000Partial(p_pB, varType, coefIndex);

    std::vector <double> lookC(3);

    std::vector <double> dlookC(3);