//above code draw pentagons and points of their lines intersections
    // get models
    bioessence_vector models = DataMgr()->getBioCard()->getModels();
    std::vector<std::vector<mathix::vector3>> intersections;

    // copy current model to MathEssence data structure
    int current_model = 0;
    MathEssence* M = WorldMgr()->createEssence<MathEssence>(
        "type:MathEssence,name:$unique_name,copy_essence:" + models[current_model]->getName());

    // prepare planes to intersect
    std::vector<contours::Plane> planes;
    vector3 A = nose;
    vector3 B = mouthR;
    vector3 C = vector3(0, 0, -1);
    planes.push_back(contours::Plane(A, B, C));

    // intersect model by planes
    // vector of edges included in 'intersections' for each plane
    contours::calculateIntersections(M->getName(), planes, intersections);
    for (auto it = 0; it != intersections.size(); it++)
        {
            for (auto jt = intersections[it].begin(); jt != intersections[it].end(); jt++)
            {
            string point_name = unique_name();
            string pointMeshName = unique_name();
            WorldMgr()->createEssence<GraphicsEssence>("type : GraphicsEssence, position : " + to_string(*jt) + ", name : " +
                point_name + ", entity : { mesh_name : " + pointMeshName + ", mesh_type : MT_SPHERE, radius: " +
                to_string(0.006124 ) + "}, custom_material_name : Yellow");
            }
        }