mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
7b05604a66
I noticed a failure in a dashboard run of UnitTestParametricCoordinates. This test uses randomly generated numbers to test the behavior of some cell shapes, and there was an instance that occured with seed 1447261681 that caused one of the comparisons to be just slightly larger than the default tolerance but still within reasonable value. I just increased the tolerance of that particular comparison. Hopefully this will prevent all future failures.
322 lines
12 KiB
C++
322 lines
12 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 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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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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#include <vtkm/exec/FunctorBase.h>
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#include <vtkm/exec/ParametricCoordinates.h>
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#include <vtkm/CellTraits.h>
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#include <vtkm/StaticAssert.h>
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#include <vtkm/VecVariable.h>
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#include <vtkm/testing/Testing.h>
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VTKM_THIRDPARTY_PRE_INCLUDE
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#include <boost/random/mersenne_twister.hpp>
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#include <boost/random/uniform_real_distribution.hpp>
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VTKM_THIRDPARTY_POST_INCLUDE
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#include <time.h>
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namespace {
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boost::mt19937 g_RandomGenerator;
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static const vtkm::IdComponent MAX_POINTS = 8;
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template<typename CellShapeTag>
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void GetMinMaxPoints(CellShapeTag,
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vtkm::CellTraitsTagSizeFixed,
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vtkm::IdComponent &minPoints,
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vtkm::IdComponent &maxPoints)
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{
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// If this line fails, then MAX_POINTS is not large enough to support all
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// cell shapes.
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VTKM_STATIC_ASSERT((vtkm::CellTraits<CellShapeTag>::NUM_POINTS <= MAX_POINTS));
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minPoints = maxPoints = vtkm::CellTraits<CellShapeTag>::NUM_POINTS;
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}
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template<typename CellShapeTag>
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void GetMinMaxPoints(CellShapeTag,
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vtkm::CellTraitsTagSizeVariable,
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vtkm::IdComponent &minPoints,
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vtkm::IdComponent &maxPoints)
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{
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minPoints = 1;
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maxPoints = MAX_POINTS;
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}
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template<typename PointWCoordsType,
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typename T,
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typename CellShapeTag>
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static void CompareCoordinates(const PointWCoordsType &pointWCoords,
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vtkm::Vec<T,3> truePCoords,
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vtkm::Vec<T,3> trueWCoords,
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CellShapeTag shape)
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{
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typedef vtkm::Vec<T,3> Vector3;
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// Stuff to fake running in the execution environment.
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char messageBuffer[256];
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messageBuffer[0] = '\0';
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vtkm::exec::internal::ErrorMessageBuffer errorMessage(messageBuffer, 256);
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vtkm::exec::FunctorBase workletProxy;
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workletProxy.SetErrorMessageBuffer(errorMessage);
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Vector3 computedWCoords
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= vtkm::exec::ParametricCoordinatesToWorldCoordinates(pointWCoords,
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truePCoords,
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shape,
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workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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VTKM_TEST_ASSERT(test_equal(computedWCoords, trueWCoords, 0.01),
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"Computed wrong world coords from parametric coords.");
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Vector3 computedPCoords
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= vtkm::exec::WorldCoordinatesToParametricCoordinates(pointWCoords,
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trueWCoords,
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shape,
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workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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VTKM_TEST_ASSERT(test_equal(computedPCoords, truePCoords, 0.01),
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"Computed wrong parametric coords from world coords.");
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}
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template<typename PointWCoordsType, typename CellShapeTag>
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void TestPCoordsSpecial(const PointWCoordsType &pointWCoords,
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CellShapeTag shape)
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{
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typedef typename PointWCoordsType::ComponentType Vector3;
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typedef typename Vector3::ComponentType T;
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// Stuff to fake running in the execution environment.
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char messageBuffer[256];
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messageBuffer[0] = '\0';
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vtkm::exec::internal::ErrorMessageBuffer errorMessage(messageBuffer, 256);
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vtkm::exec::FunctorBase workletProxy;
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workletProxy.SetErrorMessageBuffer(errorMessage);
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const vtkm::IdComponent numPoints = pointWCoords.GetNumberOfComponents();
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std::cout << " Test parametric coordinates at cell nodes." << std::endl;
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for (vtkm::IdComponent pointIndex = 0; pointIndex < numPoints; pointIndex++)
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{
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Vector3 pcoords;
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vtkm::exec::ParametricCoordinatesPoint(
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numPoints, pointIndex, pcoords, shape, workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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Vector3 wcoords = pointWCoords[pointIndex];
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CompareCoordinates(pointWCoords, pcoords, wcoords, shape);
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}
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{
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std::cout << " Test parametric coordinates at cell center." << std::endl;
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Vector3 wcoords = pointWCoords[0];
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for (vtkm::IdComponent pointIndex = 1; pointIndex < numPoints; pointIndex++)
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{
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wcoords = wcoords + pointWCoords[pointIndex];
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}
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wcoords = wcoords/Vector3(T(numPoints));
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Vector3 pcoords;
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vtkm::exec::ParametricCoordinatesCenter(
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numPoints, pcoords, shape, workletProxy);
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CompareCoordinates(pointWCoords, pcoords, wcoords, shape);
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}
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}
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template<typename PointWCoordsType, typename CellShapeTag>
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void TestPCoordsSample(const PointWCoordsType &pointWCoords,
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CellShapeTag shape)
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{
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typedef typename PointWCoordsType::ComponentType Vector3;
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// Stuff to fake running in the execution environment.
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char messageBuffer[256];
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messageBuffer[0] = '\0';
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vtkm::exec::internal::ErrorMessageBuffer errorMessage(messageBuffer, 256);
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vtkm::exec::FunctorBase workletProxy;
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workletProxy.SetErrorMessageBuffer(errorMessage);
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const vtkm::IdComponent numPoints = pointWCoords.GetNumberOfComponents();
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boost::random::uniform_real_distribution<vtkm::FloatDefault> randomDist;
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for (vtkm::IdComponent trial = 0; trial < 5; trial++)
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{
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// Generate a random pcoords that we know is in the cell.
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vtkm::Vec<vtkm::FloatDefault,3> pcoords(0);
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vtkm::FloatDefault totalWeight = 0;
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for (vtkm::IdComponent pointIndex = 0;
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pointIndex < numPoints;
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pointIndex++)
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{
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vtkm::Vec<vtkm::FloatDefault,3> pointPcoords =
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vtkm::exec::ParametricCoordinatesPoint(numPoints,
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pointIndex,
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shape,
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workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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vtkm::FloatDefault weight = randomDist(g_RandomGenerator);
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pcoords = pcoords + weight*pointPcoords;
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totalWeight += weight;
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}
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pcoords = (1/totalWeight)*pcoords;
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std::cout << " Test parametric coordinates at " << pcoords << std::endl;
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// If you convert to world coordinates and back, you should get the
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// same value.
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Vector3 wcoords =
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vtkm::exec::ParametricCoordinatesToWorldCoordinates(pointWCoords,
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pcoords,
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shape,
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workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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Vector3 computedPCoords =
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vtkm::exec::WorldCoordinatesToParametricCoordinates(pointWCoords,
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wcoords,
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shape,
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workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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VTKM_TEST_ASSERT(test_equal(pcoords, computedPCoords, 0.01),
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"pcoord/wcoord transform not symmetrical");
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}
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}
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template<typename PointWCoordsType, typename CellShellTag>
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static void TestPCoords(const PointWCoordsType &pointWCoords,
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CellShellTag shape)
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{
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TestPCoordsSpecial(pointWCoords, shape);
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TestPCoordsSample(pointWCoords, shape);
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}
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template<typename T>
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struct TestPCoordsFunctor
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{
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typedef vtkm::Vec<T,3> Vector3;
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typedef vtkm::VecVariable<Vector3,MAX_POINTS> PointWCoordType;
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template<typename CellShapeTag>
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PointWCoordType MakePointWCoords(CellShapeTag,
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vtkm::IdComponent numPoints) const
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{
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// Stuff to fake running in the execution environment.
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char messageBuffer[256];
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messageBuffer[0] = '\0';
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vtkm::exec::internal::ErrorMessageBuffer errorMessage(messageBuffer, 256);
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vtkm::exec::FunctorBase workletProxy;
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workletProxy.SetErrorMessageBuffer(errorMessage);
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boost::random::uniform_real_distribution<T> randomDist(-1,1);
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Vector3 sheerVec(randomDist(g_RandomGenerator),
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randomDist(g_RandomGenerator),
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0);
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PointWCoordType pointWCoords;
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for (vtkm::IdComponent pointIndex = 0; pointIndex < numPoints; pointIndex++)
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{
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Vector3 pcoords;
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vtkm::exec::ParametricCoordinatesPoint(
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numPoints, pointIndex, pcoords, CellShapeTag(), workletProxy);
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VTKM_TEST_ASSERT(!errorMessage.IsErrorRaised(), messageBuffer);
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Vector3 wCoords = Vector3(pcoords[0],
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pcoords[1],
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pcoords[2] + vtkm::dot(pcoords,sheerVec));
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pointWCoords.Append(wCoords);
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}
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return pointWCoords;
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}
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template<typename CellShapeTag>
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void operator()(CellShapeTag) const
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{
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vtkm::IdComponent minPoints;
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vtkm::IdComponent maxPoints;
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GetMinMaxPoints(CellShapeTag(),
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typename vtkm::CellTraits<CellShapeTag>::IsSizeFixed(),
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minPoints,
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maxPoints);
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std::cout << "--- Test shape tag directly" << std::endl;
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for (vtkm::IdComponent numPoints = minPoints;
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numPoints <= maxPoints;
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numPoints++)
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{
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TestPCoords(this->MakePointWCoords(CellShapeTag(), numPoints),
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CellShapeTag());
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}
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std::cout << "--- Test generic shape tag" << std::endl;
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vtkm::CellShapeTagGeneric genericShape(CellShapeTag::Id);
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for (vtkm::IdComponent numPoints = minPoints;
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numPoints <= maxPoints;
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numPoints++)
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{
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TestPCoords(this->MakePointWCoords(CellShapeTag(), numPoints),
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genericShape);
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}
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}
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void operator()(vtkm::CellShapeTagEmpty) const
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{
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std::cout << "Skipping empty cell shape. No points." << std::endl;
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}
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};
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void TestAllPCoords()
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{
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vtkm::UInt32 seed = static_cast<vtkm::UInt32>(time(NULL));
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std::cout << "Seed: " << seed << std::endl;
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g_RandomGenerator.seed(seed);
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std::cout << "======== Float32 ==========================" << std::endl;
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vtkm::testing::Testing::TryAllCellShapes(TestPCoordsFunctor<vtkm::Float32>());
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std::cout << "======== Float64 ==========================" << std::endl;
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vtkm::testing::Testing::TryAllCellShapes(TestPCoordsFunctor<vtkm::Float64>());
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std::cout << "======== Rectilinear Shapes ===============" << std::endl;
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boost::random::uniform_real_distribution<vtkm::FloatDefault> randomDist(0.01f,1.0f);
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vtkm::Vec<vtkm::FloatDefault,3> origin(randomDist(g_RandomGenerator),
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randomDist(g_RandomGenerator),
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randomDist(g_RandomGenerator));
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vtkm::Vec<vtkm::FloatDefault,3> spacing(randomDist(g_RandomGenerator),
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randomDist(g_RandomGenerator),
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randomDist(g_RandomGenerator));
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TestPCoords(vtkm::VecRectilinearPointCoordinates<3>(origin, spacing),
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vtkm::CellShapeTagHexahedron());
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TestPCoords(vtkm::VecRectilinearPointCoordinates<2>(origin, spacing),
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vtkm::CellShapeTagQuad());
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TestPCoords(vtkm::VecRectilinearPointCoordinates<1>(origin, spacing),
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vtkm::CellShapeTagLine());
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}
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} // Anonymous namespace
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int UnitTestParametricCoordinates(int, char *[])
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{
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return vtkm::testing::Testing::Run(TestAllPCoords);
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}
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