GaussQuadratureTetrahedron::GaussQuadratureTetrahedron(size_t order)
{
GaussLegendre quadRule = GaussLegendre(order);
GaussJacobi10 quadRule10 = GaussJacobi10(order);
GaussJacobi20 quadRule20 = GaussJacobi20(order);
m_order = std::min(quadRule.order(), std::min(quadRule10.order(), quadRule20.order()));
m_numPoints = quadRule.size() * quadRule10.size() * quadRule20.size();
position_type* pvPoint = new position_type[m_numPoints];
weight_type* pvWeight = new weight_type[m_numPoints];
size_t cnt = 0;
for(size_t i = 0; i < quadRule20.size(); i++) {
for(size_t j = 0; j < quadRule10.size(); j++) {
for(size_t k = 0; k < quadRule.size(); k++, cnt++) {
pvPoint[cnt][0] = quadRule20.point(i)[0];
pvPoint[cnt][1] = (1.0 - quadRule20.point(i)[0] ) * quadRule10.point(j)[0];
pvPoint[cnt][2] = (1.0 - quadRule20.point(i)[0]) * (1.0 - quadRule10.point(j)[0]) * quadRule.point(k)[0];
pvWeight[cnt] = quadRule20.weight(i) * quadRule10.weight(j) * quadRule.weight(k);
}
}
}
m_pvPoint = pvPoint;
m_pvWeight = pvWeight;
};
GaussQuadratureQuadrilateral::GaussQuadratureQuadrilateral(size_t order)
{
GaussLegendre quadRule = GaussLegendre(order);
m_order = std::min(quadRule.order(), quadRule.order());
m_numPoints = quadRule.size() * quadRule.size();
position_type* pvPoint = new position_type[m_numPoints];
weight_type* pvWeight = new weight_type[m_numPoints];
size_t cnt = 0;
for(size_t i = 0; i < quadRule.size(); i ++) {
for(size_t j = 0; j < quadRule.size(); j++, cnt++) {
pvPoint[cnt][0] = quadRule.point(i)[0];
pvPoint[cnt][1] = quadRule.point(j)[0];
pvWeight[cnt] = quadRule.weight(i) * quadRule.weight(j);
}
}
m_pvPoint = pvPoint;
m_pvWeight = pvWeight;
};