Function PROJECTION

ThirdParty/libproj/vtklibproj/src/projections/ccon.cpp:83–109

PJ *PROJECTION(ccon) {

    struct pj_opaque *Q = static_cast<struct pj_opaque*>(calloc (1, sizeof (struct pj_opaque)));
    if (nullptr==Q)
        return pj_default_destructor (P, PROJ_ERR_OTHER /*ENOMEM*/);
    P->opaque = Q;
    P->destructor = destructor;

    Q->phi1 = pj_param(P->ctx, P->params, "rlat_1").f;
    if (fabs(Q->phi1) < EPS10)
    {
        proj_log_error(P, _("Invalid value for lat_1: |lat_1| should be > 0"));
        return destructor(P, PROJ_ERR_INVALID_OP_ILLEGAL_ARG_VALUE);
    }
    if (!(Q->en = pj_enfn(P->es)))
        return destructor(P, PROJ_ERR_OTHER /*ENOMEM*/);

    Q->sinphi1 = sin(Q->phi1);
    Q->cosphi1 = cos(Q->phi1);
    Q->ctgphi1 = Q->cosphi1/Q->sinphi1;


    P->inv = ccon_inverse;
    P->fwd = ccon_forward;

    return P;
}