mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 09:59:12 +00:00
713cf4228a
The CellSetExplicit and CellSetSingleType classes have an ivar that marks the number of points. There were several instances of code creating cell sets without specifying the number of points. This can be very bad if subsequent code needs that information.
232 lines
7.2 KiB
C++
232 lines
7.2 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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#ifndef VTKM_DEVICE_ADAPTER
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#define VTKM_DEVICE_ADAPTER VTKM_DEVICE_ADAPTER_SERIAL
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#endif
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#include <vtkm/worklet/TetrahedralizeUniformGrid.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/Math.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/testing/Testing.h>
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//Suppress warnings about glut being deprecated on OSX
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#if (defined(VTKM_GCC) || defined(VTKM_CLANG))
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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#endif
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#if defined (__APPLE__)
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# include <GLUT/glut.h>
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#else
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# include <GL/glut.h>
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#endif
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typedef VTKM_DEFAULT_DEVICE_ADAPTER_TAG DeviceAdapter;
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// Default size of the example
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vtkm::Id2 dims(4,4);
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vtkm::Id cellsToDisplay = 16;
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vtkm::Id numberOfInPoints;
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// Takes input uniform grid and outputs unstructured grid of triangles
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vtkm::worklet::TetrahedralizeFilterUniformGrid<DeviceAdapter> *tetrahedralizeFilter;
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vtkm::cont::DataSet tetDataSet;
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// Point location of vertices from a CastAndCall but needs a static cast eventually
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Float64, 3> > vertexArray;
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//
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// Construct an input data set with uniform grid of indicated dimensions, origin and spacing
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//
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vtkm::cont::DataSet MakeTriangulateTestDataSet(vtkm::Id2 dim)
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{
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vtkm::cont::DataSet dataSet;
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// Place uniform grid on a set physical space so OpenGL drawing is easier
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const vtkm::Id3 vdims(dim[0] + 1, dim[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>(dim[0]),
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1.0f/static_cast<vtkm::Float32>(dim[1]),
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1.0f/static_cast<vtkm::Float32>(dim[2]));
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// Generate coordinate system
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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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// Generate cell set
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vtkm::cont::CellSetStructured<2> cellSet("cells");
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cellSet.SetPointDimensions(vtkm::make_Vec(dim[0] + 1, dim[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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// Functor to retrieve vertex locations from the CoordinateSystem
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// Actually need a static cast to ArrayHandle from DynamicArrayHandleCoordinateSystem
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// but haven't been able to figure out what that is
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//
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struct GetVertexArray
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{
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template <typename ArrayHandleType>
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VTKM_CONT
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void operator()(ArrayHandleType array) const
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{
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this->GetVertexPortal(array.GetPortalConstControl());
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}
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private:
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template <typename PortalType>
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VTKM_CONT
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void GetVertexPortal(const PortalType &portal) const
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{
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for (vtkm::Id index = 0; index < portal.GetNumberOfValues(); index++)
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{
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vertexArray.GetPortalControl().Set(index, portal.Get(index));
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}
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}
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};
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//
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// Initialize the OpenGL state
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//
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void initializeGL()
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{
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-0.5f, 1.5f, -0.5f, 1.5f, -1.0f, 1.0f);
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}
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//
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// Render the output using simple OpenGL
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//
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void displayCall()
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{
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glClear(GL_COLOR_BUFFER_BIT);
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glLineWidth(3.0f);
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// Get the cellset, coordinate system and coordinate data
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vtkm::cont::CellSetSingleType<> cellSet;
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tetDataSet.GetCellSet(0).CopyTo(cellSet);
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// Need the actual vertex points from a static cast of the dynamic array but can't get it right
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// So use cast and call on a functor that stores that dynamic array into static array we created
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vertexArray.Allocate(numberOfInPoints);
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vtkm::cont::CastAndCall(tetDataSet.GetCoordinateSystem(), GetVertexArray());
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// Draw the two triangles belonging to each quad
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vtkm::Id triangle = 0;
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vtkm::Float32 color[4][3] =
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{
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{1.0f, 0.0f, 0.0f},
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{0.0f, 1.0f, 0.0f},
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{0.0f, 0.0f, 1.0f},
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{1.0f, 1.0f, 0.0f}
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};
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for (vtkm::Id quad = 0; quad < cellsToDisplay; quad++)
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{
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for (vtkm::Id j = 0; j < 2; j++)
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{
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vtkm::Id indx = triangle % 4;
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glColor3f(color[indx][0], color[indx][1], color[indx][2]);
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// Get the indices of the vertices that make up this triangle
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vtkm::Vec<vtkm::Id, 3> triIndices;
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cellSet.GetIndices(triangle, triIndices);
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// Get the vertex points for this triangle
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vtkm::Vec<vtkm::Float64,3> pt0 = vertexArray.GetPortalConstControl().Get(triIndices[0]);
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vtkm::Vec<vtkm::Float64,3> pt1 = vertexArray.GetPortalConstControl().Get(triIndices[1]);
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vtkm::Vec<vtkm::Float64,3> pt2 = vertexArray.GetPortalConstControl().Get(triIndices[2]);
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// Draw the triangle filled with alternating colors
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glPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
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glBegin(GL_TRIANGLES);
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glVertex3d(pt0[0], pt0[1], pt0[2]);
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glVertex3d(pt1[0], pt1[1], pt1[2]);
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glVertex3d(pt2[0], pt2[1], pt2[2]);
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glEnd();
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triangle++;
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}
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}
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glFlush();
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}
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// Tetrahedralize and render uniform grid example
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int main(int argc, char* argv[])
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{
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std::cout << "TrianguleUniformGrid Example" << std::endl;
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std::cout << "Parameters are [xdim ydim [# of cellsToDisplay]]" << std::endl << std::endl;
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// Set the problem size and number of cells to display from command line
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if (argc >= 3)
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{
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dims[0] = atoi(argv[1]);
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dims[1] = atoi(argv[2]);
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cellsToDisplay = dims[0] * dims[1];
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}
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if (argc == 4)
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{
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cellsToDisplay = atoi(argv[3]);
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}
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numberOfInPoints = (dims[0] + 1) * (dims[1] + 1);
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// Create the input uniform cell set
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vtkm::cont::DataSet inDataSet = MakeTriangulateTestDataSet(dims);
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// Create the output dataset explicit cell set with same coordinate system
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vtkm::cont::CellSetSingleType<> cellSet("cells");
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tetDataSet.AddCellSet(cellSet);
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tetDataSet.AddCoordinateSystem(inDataSet.GetCoordinateSystem(0));
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// Convert uniform hexahedra to tetrahedra
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tetrahedralizeFilter = new vtkm::worklet::TetrahedralizeFilterUniformGrid<DeviceAdapter>
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(inDataSet, tetDataSet);
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tetrahedralizeFilter->Run();
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// Render the output dataset of tets
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glutInit(&argc, argv);
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glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
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glutInitWindowSize(1000, 1000);
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glutInitWindowPosition(100, 100);
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glutCreateWindow("VTK-m Uniform Triangulate");
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initializeGL();
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glutDisplayFunc(displayCall);
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glutMainLoop();
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return 0;
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}
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#if (defined(VTKM_GCC) || defined(VTKM_CLANG))
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# pragma GCC diagnostic pop
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#endif
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