TriQuadrature.cpp

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#include "TriQuadrature.hpp"
#include "LineQuadrature.hpp"
 
#include <vector>
#include <cassert>
#include <cmath>
 
namespace polyfem
{
    namespace quadrature
    {
        namespace
        {
            void get_weight_and_points(const int order, Eigen::MatrixXd &points, Eigen::VectorXd &weights)
            {
                switch (order)
                {
#include <polyfem/autogen/auto_triangle.ipp>
 
                default:
                    assert(false);
                };
            }
        } // namespace
 
        TriQuadrature::TriQuadrature()
        {
        }
 
        void TriQuadrature::get_quadrature(const int order, Quadrature &quad)
        {
            Quadrature tmp;
 
            get_weight_and_points(order, quad.points, quad.weights);
 
            assert(fabs(quad.weights.sum() - 1) < 1e-14);
            assert(quad.points.minCoeff() >= 0 && quad.points.maxCoeff() <= 1);
 
            assert(quad.points.rows() == quad.weights.size());
 
            quad.weights /= 2;
        }
    } // namespace quadrature
} // namespace polyfem