Function pipeline_reverse

ThirdParty/libproj/vtklibproj/src/pipeline.cpp:264–282

static PJ_LP pipeline_reverse (PJ_XY xy, PJ *P) {
    PJ_COORD point = {{0,0,0,0}};
    point.xy = xy;
    auto pipeline = static_cast<struct Pipeline*>(P->opaque);
    for( auto iterStep = pipeline->steps.rbegin();
               iterStep != pipeline->steps.rend(); ++iterStep )
    {
        const auto& step = *iterStep;
        if( !step.omit_inv )
        {
            point = pj_approx_2D_trans (step.pj, PJ_INV, point);
            if( point.xyzt.x == HUGE_VAL ) {
                break;
            }
        }
    }

    return point.lp;
}