130 lines
4.9 KiB
C++
130 lines
4.9 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayHandleUniformPointCoordinates.h>
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#include <vtkm/cont/CellLocatorUniformGrid.h>
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#include <vtkm/cont/CellSetStructured.h>
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#include <vtkm/exec/CellLocatorUniformGrid.h>
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namespace vtkm
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{
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namespace cont
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{
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CellLocatorUniformGrid::CellLocatorUniformGrid() = default;
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CellLocatorUniformGrid::~CellLocatorUniformGrid() = default;
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using UniformType = vtkm::cont::ArrayHandleUniformPointCoordinates;
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using Structured2DType = vtkm::cont::CellSetStructured<2>;
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using Structured3DType = vtkm::cont::CellSetStructured<3>;
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void CellLocatorUniformGrid::Build()
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{
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vtkm::cont::CoordinateSystem coords = this->GetCoordinates();
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vtkm::cont::DynamicCellSet cellSet = this->GetCellSet();
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if (!coords.GetData().IsType<UniformType>())
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throw vtkm::cont::ErrorBadType("Coordinates are not uniform type.");
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if (cellSet.IsSameType(Structured2DType()))
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{
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this->Is3D = false;
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Structured2DType structuredCellSet = cellSet.Cast<Structured2DType>();
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vtkm::Id2 pointDims = structuredCellSet.GetSchedulingRange(vtkm::TopologyElementTagPoint());
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this->PointDims = vtkm::Id3(pointDims[0], pointDims[1], 1);
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}
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else if (cellSet.IsSameType(Structured3DType()))
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{
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this->Is3D = true;
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Structured3DType structuredCellSet = cellSet.Cast<Structured3DType>();
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this->PointDims = structuredCellSet.GetSchedulingRange(vtkm::TopologyElementTagPoint());
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}
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else
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{
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throw vtkm::cont::ErrorBadType("Cells are not 2D or 3D structured type.");
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}
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UniformType uniformCoords = coords.GetData().Cast<UniformType>();
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this->Origin = uniformCoords.GetPortalConstControl().GetOrigin();
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vtkm::Vec3f spacing = uniformCoords.GetPortalConstControl().GetSpacing();
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vtkm::Vec3f unitLength;
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unitLength[0] = static_cast<vtkm::FloatDefault>(this->PointDims[0] - 1);
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unitLength[1] = static_cast<vtkm::FloatDefault>(this->PointDims[1] - 1);
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unitLength[2] = static_cast<vtkm::FloatDefault>(this->PointDims[2] - 1);
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this->MaxPoint = this->Origin + spacing * unitLength;
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this->InvSpacing[0] = 1.f / spacing[0];
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this->InvSpacing[1] = 1.f / spacing[1];
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this->InvSpacing[2] = 1.f / spacing[2];
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this->CellDims[0] = this->PointDims[0] - 1;
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this->CellDims[1] = this->PointDims[1] - 1;
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this->CellDims[2] = this->PointDims[2] - 1;
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}
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namespace
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{
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template <vtkm::IdComponent dimensions>
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struct CellLocatorUniformGridPrepareForExecutionFunctor
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{
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template <typename DeviceAdapter, typename... Args>
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VTKM_CONT bool operator()(DeviceAdapter,
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vtkm::cont::VirtualObjectHandle<vtkm::exec::CellLocator>& execLocator,
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Args&&... args) const
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{
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using ExecutionType = vtkm::exec::CellLocatorUniformGrid<DeviceAdapter, dimensions>;
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ExecutionType* execObject = new ExecutionType(std::forward<Args>(args)..., DeviceAdapter());
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execLocator.Reset(execObject);
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return true;
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}
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};
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}
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const vtkm::exec::CellLocator* CellLocatorUniformGrid::PrepareForExecution(
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vtkm::cont::DeviceAdapterId device) const
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{
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bool success = true;
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if (this->Is3D)
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{
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success = vtkm::cont::TryExecuteOnDevice(device,
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CellLocatorUniformGridPrepareForExecutionFunctor<3>(),
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this->ExecutionObjectHandle,
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this->CellDims,
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this->PointDims,
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this->Origin,
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this->InvSpacing,
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this->MaxPoint,
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this->GetCoordinates().GetData());
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}
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else
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{
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success = vtkm::cont::TryExecuteOnDevice(device,
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CellLocatorUniformGridPrepareForExecutionFunctor<2>(),
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this->ExecutionObjectHandle,
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this->CellDims,
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this->PointDims,
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this->Origin,
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this->InvSpacing,
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this->MaxPoint,
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this->GetCoordinates().GetData());
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}
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if (!success)
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{
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throwFailedRuntimeDeviceTransfer("CellLocatorUniformGrid", device);
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}
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return this->ExecutionObjectHandle.PrepareForExecution(device);
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}
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} //namespace cont
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} //namespace vtkm
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