mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-20 11:05:44 +00:00
121 lines
4.5 KiB
C++
121 lines
4.5 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/IsosurfaceUniformGrid.h>
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#include <vtkm/worklet/DispatcherMapField.h>
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#include <vtkm/cont/CellSetExplicit.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/testing/Testing.h>
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#include <vector>
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namespace {
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class TangleField : public vtkm::worklet::WorkletMapField
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{
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public:
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typedef void ControlSignature(FieldIn<IdType> vertexId, FieldOut<Scalar> xx, FieldOut<Scalar> yy, FieldOut<Scalar> zz, FieldOut<Scalar> v);
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typedef void ExecutionSignature(_1, _2, _3, _4, _5);
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typedef _1 InputDomain;
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const int xdim, ydim, zdim, cellsPerLayer;
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const float xmin, ymin, zmin, xmax, ymax, zmax;
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VTKM_CONT_EXPORT
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TangleField(const int dims[3], const float mins[3], const float maxs[3]) : xdim(dims[0]), ydim(dims[1]), zdim(dims[2]),
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xmin(mins[0]), ymin(mins[1]), zmin(mins[2]), xmax(maxs[0]), ymax(maxs[1]), zmax(maxs[2]), cellsPerLayer((xdim) * (ydim)) { };
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VTKM_EXEC_EXPORT
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void operator()(const vtkm::Id &vertexId, vtkm::Float32 &xx, vtkm::Float32 &yy, vtkm::Float32 &zz, vtkm::Float32 &v) const
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{
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const vtkm::Id x = vertexId % (xdim);
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const vtkm::Id y = (vertexId / (xdim)) % (ydim);
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const vtkm::Id z = vertexId / cellsPerLayer;
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xx = 3.0*(xmin+(xmax-xmin)*(1.0*x/(xdim-1)));
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yy = 3.0*(ymin+(ymax-ymin)*(1.0*y/(xdim-1)));
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zz = 3.0*(zmin+(zmax-zmin)*(1.0*z/(xdim-1)));
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v = (xx*xx*xx*xx - 5.0f*xx*xx + yy*yy*yy*yy - 5.0f*yy*yy + zz*zz*zz*zz - 5.0f*zz*zz + 11.8f) * 0.2f + 0.5f;
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}
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};
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vtkm::cont::DataSet MakeIsosurfaceTestDataSet(int dim)
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{
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vtkm::cont::DataSet dataSet;
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const int vdim = dim + 1; const int dim3 = dim*dim*dim;
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int vdims[3] = { vdim, vdim, vdim };
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float mins[3] = {-1.0f, -1.0f, -1.0f};
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float maxs[3] = {1.0f, 1.0f, 1.0f};
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vtkm::cont::ArrayHandle<vtkm::Float32> fieldArray, x, y, z;
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vtkm::cont::ArrayHandleCounting<vtkm::Id> vertexCountImplicitArray(0, vdim*vdim*vdim);
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vtkm::worklet::DispatcherMapField<TangleField> tangleFieldDispatcher(TangleField(vdims, mins, maxs));
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tangleFieldDispatcher.Invoke(vertexCountImplicitArray, x, y, z, fieldArray);
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dataSet.AddField(vtkm::cont::Field("x", 1, vtkm::cont::Field::ASSOC_POINTS, x));
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dataSet.AddField(vtkm::cont::Field("y", 1, vtkm::cont::Field::ASSOC_POINTS, y));
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dataSet.AddField(vtkm::cont::Field("z", 1, vtkm::cont::Field::ASSOC_POINTS, z));
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dataSet.AddCoordinateSystem(vtkm::cont::CoordinateSystem("x","y","z"));
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dataSet.AddField(vtkm::cont::Field("nodevar", 1, vtkm::cont::Field::ASSOC_POINTS, fieldArray));
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vtkm::Float32 cellvar[dim3];
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for(int i=0; i<dim3; i++)
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cellvar[i] = float(i);
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dataSet.AddField(vtkm::cont::Field("cellvar", 1, vtkm::cont::Field::ASSOC_CELL_SET, "cells", cellvar, dim3));
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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( vtkm::make_Vec(vdim,vdim,vdim) );
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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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void TestIsosurfaceUniformGrid()
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{
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std::cout << "Testing IsosurfaceUniformGrid Filter" << std::endl;
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int dim = 4;
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vtkm::cont::DataSet dataSet = MakeIsosurfaceTestDataSet(dim);
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vtkm::worklet::IsosurfaceFilterUniformGrid<vtkm::Float32, VTKM_DEFAULT_DEVICE_ADAPTER_TAG> isosurfaceFilter(dim, dataSet);
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Float32,3> > verticesArray;
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vtkm::cont::ArrayHandle<vtkm::Float32> scalarsArray;
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isosurfaceFilter.computeIsosurface(0.5, verticesArray, scalarsArray);
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VTKM_TEST_ASSERT(test_equal(verticesArray.GetNumberOfValues(), 480),
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"Wrong result for Isosurface filter");
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}
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int UnitTestIsosurfaceUniformGrid(int, char *[])
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{
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return vtkm::cont::testing::Testing::Run(TestIsosurfaceUniformGrid);
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}
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