198 lines
7.1 KiB
C++
198 lines
7.1 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
//
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//============================================================================
|
|
|
|
#ifndef vtk_m_cont_testing_TestingPointLocatorUniformGrid_h
|
|
#define vtk_m_cont_testing_TestingPointLocatorUniformGrid_h
|
|
|
|
#include <random>
|
|
|
|
#include <vtkm/cont/testing/Testing.h>
|
|
|
|
#include <vtkm/cont/PointLocatorUniformGrid.h>
|
|
#include <vtkm/exec/PointLocatorUniformGrid.h>
|
|
|
|
////brute force method /////
|
|
template <typename CoordiVecT, typename CoordiPortalT, typename CoordiT>
|
|
VTKM_EXEC_CONT vtkm::Id NNSVerify3D(CoordiVecT qc, CoordiPortalT coordiPortal, CoordiT& dis2)
|
|
{
|
|
dis2 = std::numeric_limits<CoordiT>::max();
|
|
vtkm::Id nnpIdx = -1;
|
|
|
|
for (vtkm::Int32 i = 0; i < coordiPortal.GetNumberOfValues(); i++)
|
|
{
|
|
CoordiT splitX = coordiPortal.Get(i)[0];
|
|
CoordiT splitY = coordiPortal.Get(i)[1];
|
|
CoordiT splitZ = coordiPortal.Get(i)[2];
|
|
CoordiT _dis2 = (splitX - qc[0]) * (splitX - qc[0]) + (splitY - qc[1]) * (splitY - qc[1]) +
|
|
(splitZ - qc[2]) * (splitZ - qc[2]);
|
|
if (_dis2 < dis2)
|
|
{
|
|
dis2 = _dis2;
|
|
nnpIdx = i;
|
|
}
|
|
}
|
|
return nnpIdx;
|
|
}
|
|
|
|
class NearestNeighborSearchBruteForce3DWorklet : public vtkm::worklet::WorkletMapField
|
|
{
|
|
public:
|
|
using ControlSignature = void(FieldIn qcIn,
|
|
WholeArrayIn treeCoordiIn,
|
|
FieldOut nnIdOut,
|
|
FieldOut nnDisOut);
|
|
using ExecutionSignature = void(_1, _2, _3, _4);
|
|
|
|
VTKM_CONT
|
|
NearestNeighborSearchBruteForce3DWorklet() {}
|
|
|
|
template <typename CoordiVecType, typename CoordiPortalType, typename IdType, typename CoordiType>
|
|
VTKM_EXEC void operator()(const CoordiVecType& qc,
|
|
const CoordiPortalType& coordiPortal,
|
|
IdType& nnId,
|
|
CoordiType& nnDis) const
|
|
{
|
|
nnDis = std::numeric_limits<CoordiType>::max();
|
|
|
|
nnId = NNSVerify3D(qc, coordiPortal, nnDis);
|
|
}
|
|
};
|
|
|
|
class PointLocatorUniformGridWorklet : public vtkm::worklet::WorkletMapField
|
|
{
|
|
public:
|
|
typedef void ControlSignature(FieldIn qcIn,
|
|
ExecObject locator,
|
|
FieldOut nnIdOut,
|
|
FieldOut nnDistOut);
|
|
|
|
typedef void ExecutionSignature(_1, _2, _3, _4);
|
|
|
|
VTKM_CONT
|
|
PointLocatorUniformGridWorklet() {}
|
|
|
|
template <typename CoordiVecType, typename Locator>
|
|
VTKM_EXEC void operator()(const CoordiVecType& qc,
|
|
const Locator& locator,
|
|
vtkm::Id& nnIdOut,
|
|
vtkm::FloatDefault& nnDis) const
|
|
{
|
|
locator->FindNearestNeighbor(qc, nnIdOut, nnDis);
|
|
}
|
|
};
|
|
|
|
template <typename DeviceAdapter>
|
|
class TestingPointLocatorUniformGrid
|
|
{
|
|
public:
|
|
using Algorithm = vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter>;
|
|
void TestTest() const
|
|
{
|
|
vtkm::Int32 nTrainingPoints = 5;
|
|
vtkm::Int32 nTestingPoint = 1;
|
|
|
|
std::vector<vtkm::Vec3f_32> coordi;
|
|
|
|
///// randomly generate training points/////
|
|
std::default_random_engine dre;
|
|
std::uniform_real_distribution<vtkm::Float32> dr(0.0f, 10.0f);
|
|
|
|
for (vtkm::Int32 i = 0; i < nTrainingPoints; i++)
|
|
{
|
|
coordi.push_back(vtkm::make_Vec(dr(dre), dr(dre), dr(dre)));
|
|
}
|
|
// Add a point to each corner to test the case where points might slip out
|
|
// of the range by epsilon
|
|
coordi.push_back(vtkm::make_Vec(00.0f, 00.0f, 00.0f));
|
|
coordi.push_back(vtkm::make_Vec(00.0f, 10.0f, 00.0f));
|
|
coordi.push_back(vtkm::make_Vec(10.0f, 00.0f, 00.0f));
|
|
coordi.push_back(vtkm::make_Vec(10.0f, 10.0f, 00.0f));
|
|
coordi.push_back(vtkm::make_Vec(00.0f, 00.0f, 10.0f));
|
|
coordi.push_back(vtkm::make_Vec(00.0f, 10.0f, 10.0f));
|
|
coordi.push_back(vtkm::make_Vec(10.0f, 00.0f, 10.0f));
|
|
coordi.push_back(vtkm::make_Vec(10.0f, 10.0f, 10.0f));
|
|
auto coordi_Handle = vtkm::cont::make_ArrayHandle(coordi);
|
|
|
|
vtkm::cont::CoordinateSystem coord("points", coordi_Handle);
|
|
|
|
vtkm::cont::PointLocatorUniformGrid pointLocatorUG;
|
|
pointLocatorUG.SetCoordinates(coord);
|
|
pointLocatorUG.SetRange({ { 0.0, 10.0 } });
|
|
pointLocatorUG.SetNumberOfBins({ 5, 5, 5 });
|
|
|
|
vtkm::cont::PointLocator* locator = &pointLocatorUG;
|
|
locator->Update();
|
|
|
|
///// randomly generate testing points/////
|
|
std::vector<vtkm::Vec3f_32> qcVec;
|
|
for (vtkm::Int32 i = 0; i < nTestingPoint; i++)
|
|
{
|
|
qcVec.push_back(vtkm::make_Vec(dr(dre), dr(dre), dr(dre)));
|
|
}
|
|
// Test near each corner to make sure that corner gets included
|
|
qcVec.push_back(vtkm::make_Vec(0.01f, 0.01f, 0.01f));
|
|
qcVec.push_back(vtkm::make_Vec(0.01f, 9.99f, 0.01f));
|
|
qcVec.push_back(vtkm::make_Vec(9.99f, 0.01f, 0.01f));
|
|
qcVec.push_back(vtkm::make_Vec(9.99f, 9.99f, 0.01f));
|
|
qcVec.push_back(vtkm::make_Vec(0.01f, 0.01f, 9.991f));
|
|
qcVec.push_back(vtkm::make_Vec(0.01f, 9.99f, 9.99f));
|
|
qcVec.push_back(vtkm::make_Vec(9.99f, 0.01f, 9.99f));
|
|
qcVec.push_back(vtkm::make_Vec(9.99f, 9.99f, 9.99f));
|
|
auto qc_Handle = vtkm::cont::make_ArrayHandle(qcVec);
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::Id> nnId_Handle;
|
|
vtkm::cont::ArrayHandle<vtkm::FloatDefault> nnDis_Handle;
|
|
|
|
PointLocatorUniformGridWorklet pointLocatorUniformGridWorklet;
|
|
vtkm::worklet::DispatcherMapField<PointLocatorUniformGridWorklet> locatorDispatcher(
|
|
pointLocatorUniformGridWorklet);
|
|
locatorDispatcher.SetDevice(DeviceAdapter());
|
|
locatorDispatcher.Invoke(qc_Handle, locator, nnId_Handle, nnDis_Handle);
|
|
|
|
// brute force
|
|
vtkm::cont::ArrayHandle<vtkm::Id> bfnnId_Handle;
|
|
vtkm::cont::ArrayHandle<vtkm::Float32> bfnnDis_Handle;
|
|
NearestNeighborSearchBruteForce3DWorklet nnsbf3dWorklet;
|
|
vtkm::worklet::DispatcherMapField<NearestNeighborSearchBruteForce3DWorklet> nnsbf3DDispatcher(
|
|
nnsbf3dWorklet);
|
|
nnsbf3DDispatcher.SetDevice(DeviceAdapter());
|
|
nnsbf3DDispatcher.Invoke(
|
|
qc_Handle, vtkm::cont::make_ArrayHandle(coordi), bfnnId_Handle, bfnnDis_Handle);
|
|
|
|
///// verify search result /////
|
|
bool passTest = true;
|
|
auto nnPortal = nnDis_Handle.ReadPortal();
|
|
auto bfPortal = bfnnDis_Handle.ReadPortal();
|
|
for (vtkm::Int32 i = 0; i < nTestingPoint; i++)
|
|
{
|
|
vtkm::Id workletIdx = nnId_Handle.WritePortal().Get(i);
|
|
vtkm::FloatDefault workletDis = nnPortal.Get(i);
|
|
vtkm::Id bfworkletIdx = bfnnId_Handle.WritePortal().Get(i);
|
|
vtkm::FloatDefault bfworkletDis = bfPortal.Get(i);
|
|
|
|
if (workletIdx != bfworkletIdx)
|
|
{
|
|
std::cout << "bf index: " << bfworkletIdx << ", dis: " << bfworkletDis
|
|
<< ", grid: " << workletIdx << ", dis " << workletDis << std::endl;
|
|
passTest = false;
|
|
}
|
|
}
|
|
VTKM_TEST_ASSERT(passTest, "Uniform Grid NN search result incorrect.");
|
|
}
|
|
|
|
void operator()() const
|
|
{
|
|
vtkm::cont::GetRuntimeDeviceTracker().ForceDevice(DeviceAdapter());
|
|
this->TestTest();
|
|
}
|
|
};
|
|
|
|
#endif // vtk_m_cont_testing_TestingPointLocatorUniformGrid_h
|