197 lines
7.6 KiB
C++
197 lines
7.6 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.
|
|
//============================================================================
|
|
// Copyright (c) 2016, Los Alamos National Security, LLC
|
|
// All rights reserved.
|
|
//
|
|
// Copyright 2016. Los Alamos National Security, LLC.
|
|
// This software was produced under U.S. Government contract DE-AC52-06NA25396
|
|
// for Los Alamos National Laboratory (LANL), which is operated by
|
|
// Los Alamos National Security, LLC for the U.S. Department of Energy.
|
|
// The U.S. Government has rights to use, reproduce, and distribute this
|
|
// software. NEITHER THE GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY, LLC
|
|
// MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE
|
|
// USE OF THIS SOFTWARE. If software is modified to produce derivative works,
|
|
// such modified software should be clearly marked, so as not to confuse it
|
|
// with the version available from LANL.
|
|
//
|
|
// Additionally, redistribution and use in source and binary forms, with or
|
|
// without modification, are permitted provided that the following conditions
|
|
// are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
// 3. Neither the name of Los Alamos National Security, LLC, Los Alamos
|
|
// National Laboratory, LANL, the U.S. Government, nor the names of its
|
|
// contributors may be used to endorse or promote products derived from
|
|
// this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY LOS ALAMOS NATIONAL SECURITY, LLC AND
|
|
// CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
|
|
// BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LOS ALAMOS
|
|
// NATIONAL SECURITY, LLC OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//============================================================================
|
|
|
|
// This code is based on the algorithm presented in the paper:
|
|
// “Parallel Peak Pruning for Scalable SMP Contour Tree Computation.”
|
|
// Hamish Carr, Gunther Weber, Christopher Sewell, and James Ahrens.
|
|
// Proceedings of the IEEE Symposium on Large Data Analysis and Visualization
|
|
// (LDAV), October 2016, Baltimore, Maryland.
|
|
|
|
//=======================================================================================
|
|
//
|
|
// COMMENTS:
|
|
//
|
|
// A comparator that sorts edges by:
|
|
// i. the chain maximum for the upper end of the edge
|
|
// this clusters all edges together that lead to the chain maximum
|
|
// ii. the index of the low end of the edge
|
|
// this sorts the edges for the chain max by the low end
|
|
//
|
|
// Any vector needed by the functor for lookup purposes will be passed as a parameter to
|
|
// the constructor and saved, with the actual function call being the operator ()
|
|
//
|
|
//=======================================================================================
|
|
|
|
#ifndef vtkm_worklet_contourtree_edge_peak_comparator_h
|
|
#define vtkm_worklet_contourtree_edge_peak_comparator_h
|
|
|
|
#include <vtkm/cont/ArrayHandle.h>
|
|
#include <vtkm/cont/ExecutionObjectBase.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace worklet
|
|
{
|
|
namespace contourtree
|
|
{
|
|
|
|
// Comparator for edges to sort governing saddles high
|
|
template <typename T, typename StorageType>
|
|
class EdgePeakComparator : public vtkm::cont::ExecutionObjectBase
|
|
{
|
|
public:
|
|
using ValueArrayType = vtkm::cont::ArrayHandle<T, StorageType>;
|
|
using IdArrayType = vtkm::cont::ArrayHandle<vtkm::Id>;
|
|
|
|
VTKM_CONT
|
|
EdgePeakComparator(ValueArrayType values,
|
|
IdArrayType valueIndex,
|
|
IdArrayType edgeFar,
|
|
IdArrayType edgeNear,
|
|
IdArrayType arcArray,
|
|
bool isJoinGraph)
|
|
: Values(values)
|
|
, ValueIndex(valueIndex)
|
|
, EdgeFar(edgeFar)
|
|
, EdgeNear(edgeNear)
|
|
, ArcArray(arcArray)
|
|
, IsJoinGraph(isJoinGraph)
|
|
{
|
|
}
|
|
|
|
ValueArrayType Values;
|
|
IdArrayType ValueIndex;
|
|
IdArrayType EdgeFar;
|
|
IdArrayType EdgeNear;
|
|
IdArrayType ArcArray;
|
|
bool IsJoinGraph;
|
|
|
|
template <typename DeviceAdapter>
|
|
class ExecObject
|
|
{
|
|
public:
|
|
using ValuePortalType =
|
|
typename ValueArrayType::template ExecutionTypes<DeviceAdapter>::PortalConst;
|
|
using IdPortalType = typename IdArrayType::template ExecutionTypes<DeviceAdapter>::PortalConst;
|
|
|
|
VTKM_CONT
|
|
ExecObject(ValuePortalType values,
|
|
IdPortalType valueIndex,
|
|
IdPortalType edgeFar,
|
|
IdPortalType edgeNear,
|
|
IdPortalType arcArray,
|
|
bool isJoinGraph)
|
|
: Values(values)
|
|
, ValueIndex(valueIndex)
|
|
, EdgeFar(edgeFar)
|
|
, EdgeNear(edgeNear)
|
|
, ArcArray(arcArray)
|
|
, IsJoinGraph(isJoinGraph)
|
|
{
|
|
}
|
|
|
|
ValuePortalType Values;
|
|
IdPortalType ValueIndex;
|
|
IdPortalType EdgeFar;
|
|
IdPortalType EdgeNear;
|
|
IdPortalType ArcArray;
|
|
bool IsJoinGraph;
|
|
|
|
VTKM_EXEC
|
|
bool operator()(const vtkm::Id& i, const vtkm::Id& j) const
|
|
{
|
|
// first compare the far end
|
|
if (this->EdgeFar.Get(i) < this->EdgeFar.Get(j))
|
|
return true ^ this->IsJoinGraph;
|
|
if (this->EdgeFar.Get(j) < this->EdgeFar.Get(i))
|
|
return false ^ this->IsJoinGraph;
|
|
|
|
// the compare the values of the low end
|
|
vtkm::Id valueIndex1 = this->ValueIndex.Get(this->EdgeNear.Get(i));
|
|
vtkm::Id valueIndex2 = this->ValueIndex.Get(this->EdgeNear.Get(j));
|
|
|
|
if (this->Values.Get(valueIndex1) < this->Values.Get(valueIndex2))
|
|
return true ^ this->IsJoinGraph;
|
|
if (this->Values.Get(valueIndex2) < this->Values.Get(valueIndex1))
|
|
return false ^ this->IsJoinGraph;
|
|
|
|
// finally compare the indices
|
|
if (valueIndex1 < valueIndex2)
|
|
return true ^ this->IsJoinGraph;
|
|
if (valueIndex2 < valueIndex1)
|
|
return false ^ this->IsJoinGraph;
|
|
|
|
if (i < j)
|
|
return false ^ this->IsJoinGraph;
|
|
if (j < i)
|
|
return true ^ this->IsJoinGraph;
|
|
|
|
// fallback can happen when multiple paths end at same extremum
|
|
return false; //true ^ graph.isJoinGraph;
|
|
}
|
|
};
|
|
|
|
template <typename DeviceAdapter>
|
|
VTKM_CONT ExecObject<DeviceAdapter> PrepareForExecution(DeviceAdapter) const
|
|
{
|
|
return ExecObject<DeviceAdapter>(this->Values.PrepareForInput(DeviceAdapter()),
|
|
this->ValueIndex.PrepareForInput(DeviceAdapter()),
|
|
this->EdgeFar.PrepareForInput(DeviceAdapter()),
|
|
this->EdgeNear.PrepareForInput(DeviceAdapter()),
|
|
this->ArcArray.PrepareForInput(DeviceAdapter()),
|
|
this->IsJoinGraph);
|
|
}
|
|
}; // EdgePeakComparator
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|