Method init_hash_grid

tools/MeshUtils/PointLocator.cpp:116–131

}

void PointLocator::init_hash_grid() {
    const size_t dim = m_mesh->get_dim();
    const size_t num_elements = m_elements.size() / m_vertex_per_element;

    Float cell_size = compute_cell_size();
    m_grid = HashGrid::create(cell_size, dim);

    MatrixF elem_vtx(m_vertex_per_element, dim);
    for (size_t i=0; i<num_elements; i++) {
        VectorI elem = m_elements.segment(i*m_vertex_per_element, m_vertex_per_element);
        for (size_t j=0; j<m_vertex_per_element; j++) {
            elem_vtx.row(j) = m_mesh->get_vertex(elem[j]);
        }
        m_grid->insert_bbox(i, elem_vtx);
    }
}

Float PointLocator::compute_cell_size() const {
    const size_t num_elements = m_elements.size() / m_vertex_per_element;