mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
81 lines
2.4 KiB
C++
81 lines
2.4 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_exec_ConnectivityExplicit_h
|
|
#define vtk_m_exec_ConnectivityExplicit_h
|
|
|
|
#include <vtkm/CellShape.h>
|
|
#include <vtkm/Types.h>
|
|
|
|
#include <vtkm/VecFromPortal.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace exec
|
|
{
|
|
|
|
template <typename ShapesPortalType, typename ConnectivityPortalType, typename OffsetsPortalType>
|
|
class ConnectivityExplicit
|
|
{
|
|
public:
|
|
using SchedulingRangeType = vtkm::Id;
|
|
|
|
ConnectivityExplicit() {}
|
|
|
|
ConnectivityExplicit(const ShapesPortalType& shapesPortal,
|
|
const ConnectivityPortalType& connPortal,
|
|
const OffsetsPortalType& offsetsPortal)
|
|
: Shapes(shapesPortal)
|
|
, Connectivity(connPortal)
|
|
, Offsets(offsetsPortal)
|
|
{
|
|
}
|
|
|
|
VTKM_EXEC
|
|
SchedulingRangeType GetNumberOfElements() const { return this->Shapes.GetNumberOfValues(); }
|
|
|
|
using CellShapeTag = vtkm::CellShapeTagGeneric;
|
|
|
|
VTKM_EXEC
|
|
CellShapeTag GetCellShape(vtkm::Id index) const { return CellShapeTag(this->Shapes.Get(index)); }
|
|
|
|
VTKM_EXEC
|
|
vtkm::IdComponent GetNumberOfIndices(vtkm::Id index) const
|
|
{
|
|
return static_cast<vtkm::IdComponent>(this->Offsets.Get(index + 1) - this->Offsets.Get(index));
|
|
}
|
|
|
|
using IndicesType = vtkm::VecFromPortal<ConnectivityPortalType>;
|
|
|
|
/// Returns a Vec-like object containing the indices for the given index.
|
|
/// The object returned is not an actual array, but rather an object that
|
|
/// loads the indices lazily out of the connectivity array. This prevents
|
|
/// us from having to know the number of indices at compile time.
|
|
///
|
|
VTKM_EXEC
|
|
IndicesType GetIndices(vtkm::Id index) const
|
|
{
|
|
const vtkm::Id offset = this->Offsets.Get(index);
|
|
const vtkm::Id endOffset = this->Offsets.Get(index + 1);
|
|
const auto length = static_cast<vtkm::IdComponent>(endOffset - offset);
|
|
|
|
return IndicesType(this->Connectivity, length, offset);
|
|
}
|
|
|
|
private:
|
|
ShapesPortalType Shapes;
|
|
ConnectivityPortalType Connectivity;
|
|
OffsetsPortalType Offsets;
|
|
};
|
|
|
|
} // namespace exec
|
|
} // namespace vtkm
|
|
|
|
#endif // vtk_m_exec_ConnectivityExplicit_h
|