FastVec.h

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//============================================================================
//  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_exec_internal_FastVec_h
#define vtk_m_exec_internal_FastVec_h
 
#include <vtkm/Types.h>
#include <vtkm/VecVariable.h>
 
namespace vtkm
{
namespace exec
{
namespace internal
{
 
template <typename VecType, vtkm::IdComponent MaxSize>
class FastVec
{
public:
  using Type = vtkm::VecVariable<typename VecType::ComponentType, MaxSize>;
 
  explicit VTKM_EXEC FastVec(const VecType& vec)
    : Vec(vec)
  {
  }
 
  VTKM_EXEC const Type& Get() const { return this->Vec; }
 
private:
  Type Vec;
};
 
template <typename ComponentType, vtkm::IdComponent NumComponents, vtkm::IdComponent MaxSize>
class FastVec<vtkm::Vec<ComponentType, NumComponents>, MaxSize>
{
public:
  using Type = vtkm::Vec<ComponentType, NumComponents>;
 
  explicit VTKM_EXEC FastVec(const Type& vec)
    : Vec(vec)
  {
    VTKM_ASSERT(vec.GetNumberOfComponents() <= MaxSize);
  }
 
  VTKM_EXEC const Type& Get() const { return this->Vec; }
 
private:
  const Type& Vec;
};
 
template <typename ComponentType, vtkm::IdComponent MaxSize1, vtkm::IdComponent MaxSize2>
class FastVec<vtkm::VecVariable<ComponentType, MaxSize1>, MaxSize2>
{
public:
  using Type = vtkm::VecVariable<ComponentType, MaxSize1>;
 
  explicit VTKM_EXEC FastVec(const Type& vec)
    : Vec(vec)
  {
    VTKM_ASSERT(vec.GetNumberOfComponents() <= MaxSize2);
  }
 
  VTKM_EXEC const Type& Get() const { return this->Vec; }
 
private:
  const Type& Vec;
};
}
}
} // vtkm::exec::internal
 
#endif // vtk_m_exec_internal_FastVec_h