mirror of
https://github.com/NGSolve/netgen.git
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6034f6ecc3
add functions to collect visualization data to python export of geometries See merge request jschoeberl/netgen!92
94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
#ifdef NG_PYTHON
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// BEGIN EVIL HACK: Patch PyThread_get_key_value inside pybind11 to avoid deadlocks
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// see https://github.com/pybind/pybind11/pull/1211
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#include <Python.h>
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#include <pythread.h>
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namespace pybind11 {
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inline void * PyThread_get_key_value(int state) {
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PyThreadState *tstate = (PyThreadState *) ::PyThread_get_key_value(state);
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if (!tstate) tstate = PyGILState_GetThisThreadState();
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return tstate;
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}
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}
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// END EVIL HACK
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#include <pybind11/pybind11.h>
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#include <pybind11/operators.h>
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#include <pybind11/numpy.h>
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namespace py = pybind11;
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#include <iostream>
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#include <sstream>
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template <typename T>
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py::array MoveToNumpy(std::vector<T>& vec)
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{
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auto newvec = new std::vector<T>();
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std::swap(*newvec, vec);
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auto capsule = py::capsule(newvec, [](void *v) { delete reinterpret_cast<std::vector<T>*>(v); });
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return py::array(newvec->size(), newvec->data(), capsule);
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}
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namespace PYBIND11_NAMESPACE {
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template<typename T>
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bool CheckCast( py::handle obj ) {
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try{
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obj.cast<T>();
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return true;
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}
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catch (py::cast_error &e) {
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return false;
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}
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}
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template <typename T>
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struct extract
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{
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py::handle obj;
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extract( py::handle aobj ) : obj(aobj) {}
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bool check() { return CheckCast<T>(obj); }
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T operator()() { return obj.cast<T>(); }
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};
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}
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struct NGDummyArgument {};
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inline void NOOP_Deleter(void *) { ; }
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namespace netgen
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{
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//////////////////////////////////////////////////////////////////////
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// Lambda to function pointer conversion
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template <typename Function>
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struct function_traits
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: public function_traits<decltype(&Function::operator())> {};
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template <typename ClassType, typename ReturnType, typename... Args>
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struct function_traits<ReturnType(ClassType::*)(Args...) const> {
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typedef ReturnType (*pointer)(Args...);
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typedef ReturnType return_type;
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};
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template <typename Function>
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typename function_traits<Function>::pointer
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FunctionPointer (const Function& lambda) {
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return static_cast<typename function_traits<Function>::pointer>(lambda);
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}
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template <class T>
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inline std::string ToString (const T& t)
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{
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std::stringstream ss;
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ss << t;
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return ss.str();
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}
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}
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#endif
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