AMDiS 2.10
The Adaptive Multi-Dimensional Simulation Toolbox
ZeroOrderTestvec.hpp
1#pragma once
2
3#include <type_traits>
4
5#include <amdis/GridFunctionOperator.hpp>
6#include <amdis/common/StaticSize.hpp>
7
8namespace AMDiS
9{
15 namespace tag
16 {
17 struct testvec {};
18 }
19
20
23 {
24 public:
26
27 template <class CG, class Node, class Quad, class LocalFct, class Vec>
28 void assemble(CG const& contextGeo, Node const& node, Quad const& quad,
29 LocalFct const& localFct, Vec& elementVector) const
30 {
31 static_assert(static_size_v<typename LocalFct::Range> == CG::dow,
32 "Expression must be of vector type." );
33 static_assert(Node::isPower,
34 "Operator can be applied to Power-Nodes only.");
35
36 assert(node.degree() == CG::dow);
37
38 std::size_t size = node.child(0).size();
39
40 for (auto const& qp : quad) {
41 // Position of the current quadrature point in the reference element
42 auto&& local = contextGeo.coordinateInElement(qp.position());
43
44 // The multiplicative factor in the integral transformation formula
45 const auto factor = contextGeo.integrationElement(qp.position()) * qp.weight();
46 const auto exprValue = localFct(local);
47
48 auto const& shapeValues = node.child(0).localBasisValuesAt(local);
49
50 for (std::size_t i = 0; i < size; ++i) {
51 const auto value = exprValue * (factor * shapeValues[i]);
52 for (std::size_t k = 0; k < node.degree(); ++k) {
53 const auto local_ki = node.child(k).localIndex(i);
54 elementVector[local_ki] += at(value,k);
55 }
56 }
57 }
58 }
59 };
60
61 template <class LC>
62 struct GridFunctionOperatorRegistry<tag::testvec, LC>
63 {
64 static constexpr int degree = 0;
65 using type = ZeroOrderTestVec;
66 };
67
70} // end namespace AMDiS
zero-order vector-operator
Definition: ZeroOrderTestvec.hpp:23
Registry to specify a tag for each implementation type.
Definition: GridFunctionOperator.hpp:216
Definition: ZeroOrderTestvec.hpp:17