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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkStdFunctionArray.h"
#include "vtkArrayDispatch.h"
#include "vtkDataArrayRange.h"
#include "vtkIntArray.h"
#include "vtkVTK_DISPATCH_IMPLICIT_ARRAYS.h"
#ifdef VTK_DISPATCH_STD_FUNCTION_ARRAYS
#include "vtkArrayDispatch.h"
#endif // VTK_DISPATCH_STD_FUNCTION_ARRAYS
#include <cstdlib>
#include <memory>
#ifdef VTK_DISPATCH_STD_FUNCTION_ARRAYS
namespace
{
struct ScaleWorker
{
template <typename SrcArray, typename DstArray>
void operator()(SrcArray* srcArr, DstArray* dstArr, double scale)
{
using SrcType = vtk::GetAPIType<SrcArray>;
using DstType = vtk::GetAPIType<DstArray>;
const auto srcRange = vtk::DataArrayValueRange(srcArr);
auto dstRange = vtk::DataArrayValueRange(dstArr);
if (srcRange.size() != dstRange.size())
{
std::cout << "Different array sizes in ScaleWorker" << std::endl;
return;
}
auto dstIter = dstRange.begin();
for (SrcType srcVal : srcRange)
{
*dstIter++ = static_cast<DstType>(srcVal * scale);
}
}
};
}
#endif // VTK_DISPATCH_STD_FUNCTION_ARRAYS
int TestStdFunctionArray(int vtkNotUsed(argc), char* vtkNotUsed(argv)[])
{
int res = EXIT_SUCCESS;
vtkNew<vtkStdFunctionArray<int>> identity;
auto identity_func = [](int idx) { return idx; };
identity->SetBackend(std::make_shared<std::function<int(int)>>(identity_func));
identity->SetNumberOfTuples(100);
identity->SetNumberOfComponents(1);
for (int iArr = 0; iArr < 100; iArr++)
{
if (identity->GetValue(iArr) != iArr)
{
res = EXIT_FAILURE;
std::cout << "get value failed with vtkStdFunctionArray" << std::endl;
}
}
int iArr = 0;
for (auto val : vtk::DataArrayValueRange<1>(identity))
{
if (val != iArr)
{
res = EXIT_FAILURE;
std::cout << "range iterator failed with vtkStdFunctionArray" << std::endl;
}
iArr++;
}
#ifdef VTK_DISPATCH_STD_FUNCTION_ARRAYS
std::cout << "vtkStdFunctionArray: performing dispatch tests" << std::endl;
vtkNew<vtkIntArray> destination;
destination->SetNumberOfTuples(100);
destination->SetNumberOfComponents(1);
using Dispatcher =
vtkArrayDispatch::Dispatch2ByArray<vtkArrayDispatch::ReadOnlyArrays, vtkArrayDispatch::Arrays>;
::ScaleWorker worker;
if (!Dispatcher::Execute(identity, destination, worker, 3.0))
{
res = EXIT_FAILURE;
std::cout << "vtkArrayDispatch failed with vtkStdFunctionArray" << std::endl;
}
iArr = 0;
for (auto val : vtk::DataArrayValueRange<1>(destination))
{
if (val != 3 * iArr)
{
res = EXIT_FAILURE;
std::cout << "dispatch failed to populate the array with the correct values" << std::endl;
worker(identity.Get(), destination.Get(), 3.0);
}
iArr++;
}
#endif // VTK_DISPATCH_STD_FUNCTION_ARRAYS
return res;
}
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