123 lines
3.9 KiB
C++
123 lines
3.9 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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// 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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// Copyright 2018 National Technology & Engineering Solutions of Sandia, LLC (NTESS).
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// Copyright 2018 UT-Battelle, LLC.
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// Copyright 2018 Los Alamos National Security.
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//
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// Under the terms of Contract DE-NA0003525 with NTESS,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_worklet_cellmetrics_Min_Diagonal_h
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#define vtk_m_worklet_cellmetrics_Min_Diagonal_h
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/*
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* Mesh quality metric functions that compute the Oddy of mesh cells.
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** These metric computations are adapted from the VTK implementation of the Verdict library,
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* which provides a set of mesh/cell metrics for evaluating the geometric qualities of regions
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* of mesh spaces.
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** See: The Verdict Library Reference Manual (for per-cell-type metric formulae)
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* See: vtk/ThirdParty/verdict/vtkverdict (for VTK code implementation of this metric)
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*/
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#include "TypeOfCellHexahedral.h"
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#include "TypeOfCellQuadrilateral.h"
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#include "TypeOfCellTetrahedral.h"
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#include "TypeOfCellTriangle.h"
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#include "vtkm/CellShape.h"
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#include "vtkm/CellTraits.h"
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#include "vtkm/VecTraits.h"
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#include "vtkm/VectorAnalysis.h"
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#include "vtkm/exec/FunctorBase.h"
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#define UNUSED(expr) (void)(expr);
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namespace vtkm
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{
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namespace worklet
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{
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namespace cellmetrics
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{
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// ========================= Unsupported cells ==================================
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// By default, cells have zero shape unless the shape type template is specialized below.
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template <typename OutType, typename PointCoordVecType, typename CellShapeType>
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VTKM_EXEC OutType CellMinDiagonalMetric(const vtkm::IdComponent& numPts,
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const PointCoordVecType& pts,
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CellShapeType shape,
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const vtkm::exec::FunctorBase&)
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{
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UNUSED(numPts);
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UNUSED(pts);
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UNUSED(shape);
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return OutType(-1.0);
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}
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// ============================= 3D Volume cells ==================================
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template <typename OutType, typename PointCoordVecType>
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VTKM_EXEC OutType CellMinDiagonalMetric(const vtkm::IdComponent& numPts,
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const PointCoordVecType& pts,
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vtkm::CellShapeTagHexahedron,
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const vtkm::exec::FunctorBase& worklet)
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{
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if (numPts != 8)
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{
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worklet.RaiseError("Min diagonal metric(hexahedron) requires 8 points.");
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return OutType(0.0);
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}
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using Scalar = OutType;
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Scalar temp[3], diag[4];
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vtkm::IdComponent i(0);
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//lengths^2 f diag nals
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for (i = 0; i < 3; i++)
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{
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temp[i] = pts[6][i] - pts[0][i];
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temp[i] = temp[i] * temp[i];
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}
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diag[0] = vtkm::Sqrt(temp[0] + temp[1] + temp[2]);
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for (i = 0; i < 3; i++)
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{
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temp[i] = pts[4][i] - pts[2][i];
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temp[i] = temp[i] * temp[i];
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}
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diag[1] = vtkm::Sqrt(temp[0] + temp[1] + temp[2]);
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for (i = 0; i < 3; i++)
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{
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temp[i] = pts[7][i] - pts[1][i];
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temp[i] = temp[i] * temp[i];
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}
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diag[2] = vtkm::Sqrt(temp[0] + temp[1] + temp[2]);
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for (i = 0; i < 3; i++)
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{
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temp[i] = pts[5][i] - pts[3][i];
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temp[i] = temp[i] * temp[i];
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}
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diag[3] = vtkm::Sqrt(temp[0] + temp[1] + temp[2]);
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Scalar diagonal = diag[0];
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for (i = 1; i < 4; i++)
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{
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diagonal = vtkm::Min(diagonal, diag[i]);
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}
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return Scalar(diagonal);
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}
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} // namespace cellmetrics
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} // namespace worklet
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} // namespace vtkm
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#endif
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