Function reverse_3d

ThirdParty/libproj/vtklibproj/src/transformations/deformation.cpp:304–318

static PJ_LPZ reverse_3d(PJ_XYZ in, PJ *P) {
    struct deformationData *Q = (struct deformationData *) P->opaque;
    PJ_COORD out;
    out.xyz = in;

    if (Q->dt == HUGE_VAL) {
        out = proj_coord_error(); /* in the 3D case +t_obs must be specified */
        proj_log_debug(P, "+dt must be specified");
        return out.lpz;
    }

    out.xyz = reverse_shift(P, in, Q->dt);

    return out.lpz;
}

static PJ_COORD reverse_4d(PJ_COORD in, PJ *P) {
    struct deformationData *Q = (struct deformationData *) P->opaque;