b5415169e2
First, be more explicit when we mean a range of values in a field or a spacial bounds. Use the Range and Bounds structs in Field and CoordinateSystem to make all of this more clear (and reduce a bit of code as well).
190 lines
7.6 KiB
C++
190 lines
7.6 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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/worklet/TetrahedralizeUniformGrid.h>
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#include <vtkm/worklet/TriangulateUniformGrid.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/testing/Testing.h>
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namespace {
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//
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// Test 2D regular dataset
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//
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vtkm::cont::DataSet MakeTriangulateTestDataSet(vtkm::Id2 dims)
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{
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vtkm::cont::DataSet dataSet;
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const vtkm::Id3 vdims(dims[0] + 1, dims[1] + 1, 1);
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const vtkm::Vec<vtkm::Float32, 3> origin = vtkm::make_Vec(0.0f, 0.0f, 0.0f);
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const vtkm::Vec<vtkm::Float32, 3> spacing = vtkm::make_Vec(
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1.0f/static_cast<vtkm::Float32>(dims[0]),
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1.0f/static_cast<vtkm::Float32>(dims[1]),
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1.0f);
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vtkm::cont::ArrayHandleUniformPointCoordinates coordinates(vdims, origin, spacing);
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dataSet.AddCoordinateSystem(
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vtkm::cont::CoordinateSystem("coordinates", coordinates));
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static const vtkm::IdComponent ndim = 2;
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vtkm::cont::CellSetStructured<ndim> cellSet("cells");
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cellSet.SetPointDimensions(vtkm::make_Vec(dims[0] + 1, dims[1] + 1));
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dataSet.AddCellSet(cellSet);
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return dataSet;
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}
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//
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// Test 3D regular dataset
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//
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vtkm::cont::DataSet MakeTetrahedralizeTestDataSet(vtkm::Id3 dims)
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{
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vtkm::cont::DataSet dataSet;
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const vtkm::Id3 vdims(dims[0] + 1, dims[1] + 1, dims[2] + 1);
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const vtkm::Vec<vtkm::Float32, 3> origin = vtkm::make_Vec(0.0f, 0.0f, 0.0f);
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const vtkm::Vec<vtkm::Float32, 3> spacing = vtkm::make_Vec(
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1.0f/static_cast<vtkm::Float32>(dims[0]),
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1.0f/static_cast<vtkm::Float32>(dims[1]),
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1.0f/static_cast<vtkm::Float32>(dims[2]));
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vtkm::cont::ArrayHandleUniformPointCoordinates coordinates(vdims, origin, spacing);
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dataSet.AddCoordinateSystem(
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vtkm::cont::CoordinateSystem("coordinates", coordinates));
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static const vtkm::IdComponent ndim = 3;
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vtkm::cont::CellSetStructured<ndim> cellSet("cells");
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cellSet.SetPointDimensions(vdims);
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dataSet.AddCellSet(cellSet);
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return dataSet;
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}
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}
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//
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// Create a uniform 2D structured cell set as input
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// Add a field which is the index type which is (i+j) % 2 to alternate triangulation pattern
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// Create an unstructured cell set explicit as output
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// Points are all the same, but each quad cell becomes 2 triangle cells
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//
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void TestUniformGrid2D()
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{
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std::cout << "Testing TriangulationUniformGrid Filter" << std::endl;
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typedef VTKM_DEFAULT_DEVICE_ADAPTER_TAG DeviceAdapter;
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// Create the input uniform cell set
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vtkm::Id2 dims(4,4);
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vtkm::cont::DataSet inDataSet = MakeTriangulateTestDataSet(dims);
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// Set number of cells and vertices in input dataset
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vtkm::Id numberOfCells = dims[0] * dims[1];
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vtkm::Id numberOfVertices = (dims[0] + 1) * (dims[1] + 1);
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std::cout << "Number of input quads " << numberOfCells << std::endl;
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std::cout << "Number of input vertices " << numberOfVertices << std::endl;
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// Create the output dataset explicit cell set with same coordinate system
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vtkm::cont::DataSet outDataSet;
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vtkm::cont::CellSetSingleType<> outCellSet(vtkm::CellShapeTagTriangle(), "cells");
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outDataSet.AddCellSet(outCellSet);
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outDataSet.AddCoordinateSystem(inDataSet.GetCoordinateSystem(0));
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// Convert uniform quadrilaterals to triangles
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vtkm::worklet::TriangulateFilterUniformGrid<DeviceAdapter>
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triangulateFilter(inDataSet, outDataSet);
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triangulateFilter.Run();
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vtkm::cont::CellSetSingleType<> cellSet;
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outDataSet.GetCellSet(0).CopyTo(cellSet);
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vtkm::cont::CoordinateSystem coordinates = outDataSet.GetCoordinateSystem(0);
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const vtkm::cont::DynamicArrayHandleCoordinateSystem &coordArray = coordinates.GetData();
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std::cout << "Number of output triangles " << cellSet.GetNumberOfCells() << std::endl;
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std::cout << "Number of output vertices " << coordArray.GetNumberOfValues() << std::endl;
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std::cout << "Number of output components " << coordArray.GetNumberOfComponents() << std::endl;
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vtkm::Bounds bounds = coordinates.GetBounds(DeviceAdapter());
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std::cout << "Bounds " << bounds << std::endl;
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// Two triangles are created for every quad cell
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VTKM_TEST_ASSERT(test_equal(cellSet.GetNumberOfCells(), numberOfCells * 2),
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"Wrong result for Triangulate filter");
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}
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//
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// Create a uniform 3D structured cell set as input
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// Add a field which is the index type which is (i+j+k) % 2 to alternate tetrahedralization pattern
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// Create an unstructured cell set explicit as output
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// Points are all the same, but each hexahedron cell becomes 5 tetrahedral cells
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//
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void TestUniformGrid3D()
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{
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std::cout << "Testing TetrahedralizeUniformGrid Filter" << std::endl;
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typedef VTKM_DEFAULT_DEVICE_ADAPTER_TAG DeviceAdapter;
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// Create the input uniform cell set
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vtkm::Id3 dims(4,4,4);
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vtkm::cont::DataSet inDataSet = MakeTetrahedralizeTestDataSet(dims);
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// Set number of cells and vertices in input dataset
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vtkm::Id numberOfCells = dims[0] * dims[1] * dims[2];
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vtkm::Id numberOfVertices = (dims[0] + 1) * (dims[1] + 1) * (dims[2] + 1);
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std::cout << "Number of input hexahedra " << numberOfCells << std::endl;
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std::cout << "Number of input vertices " << numberOfVertices << std::endl;
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// Create the output dataset explicit cell set with same coordinate system
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vtkm::cont::DataSet outDataSet;
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vtkm::cont::CellSetSingleType<> outCellSet(vtkm::CellShapeTagTetra(), "cells");
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outDataSet.AddCellSet(outCellSet);
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outDataSet.AddCoordinateSystem(inDataSet.GetCoordinateSystem(0));
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// Convert uniform hexahedra to tetrahedra
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vtkm::worklet::TetrahedralizeFilterUniformGrid<DeviceAdapter>
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tetrahedralizeFilter(inDataSet, outDataSet);
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tetrahedralizeFilter.Run();
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vtkm::cont::CellSetSingleType<> cellSet;
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outDataSet.GetCellSet(0).CopyTo(cellSet);
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vtkm::cont::CoordinateSystem coordinates = outDataSet.GetCoordinateSystem(0);
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const vtkm::cont::DynamicArrayHandleCoordinateSystem &coordArray = coordinates.GetData();
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std::cout << "Number of output tetrahedra " << cellSet.GetNumberOfCells() << std::endl;
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std::cout << "Number of output vertices " << coordArray.GetNumberOfValues() << std::endl;
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std::cout << "Number of output components " << coordArray.GetNumberOfComponents() << std::endl;
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vtkm::Bounds bounds = coordinates.GetBounds(DeviceAdapter());
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std::cout << "Bounds " << bounds << std::endl;
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// Five tets are created for every hex cell
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VTKM_TEST_ASSERT(test_equal(cellSet.GetNumberOfCells(), numberOfCells * 5),
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"Wrong result for Tetrahedralize filter");
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}
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void TestTetrahedralizeUniformGrid()
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{
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TestUniformGrid3D();
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TestUniformGrid2D();
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}
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int UnitTestTetrahedralizeUniformGrid(int, char *[])
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{
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return vtkm::cont::testing::Testing::Run(TestTetrahedralizeUniformGrid);
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}
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