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vtk-m/vtkm/cont/testing/UnitTestDataSetBuilderRectilinear.cxx
Kenneth Moreland e23989bde1 Use data method to get pointer from std::vector 
Do not use `&v.front()` to get the pointer from an `std::vector`. That
behavior is undefined when the vector is empty. Instead, use `v.data()`.
2020-07-23 11:02:40 -06:00

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//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt for details.
//
// This software is distributed WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
// PURPOSE. See the above copyright notice for more information.
//============================================================================
#include <vtkm/cont/CellSetStructured.h>
#include <vtkm/cont/DataSetBuilderRectilinear.h>
#include <vtkm/cont/DynamicCellSet.h>
#include <vtkm/cont/testing/MakeTestDataSet.h>
#include <vtkm/cont/testing/Testing.h>
#include <ctime>
#include <random>
#include <vector>
namespace DataSetBuilderRectilinearNamespace
{
std::mt19937 g_RandomGenerator;
void ValidateDataSet(const vtkm::cont::DataSet& ds,
int dim,
vtkm::Id numPoints,
vtkm::Id numCells,
const vtkm::Bounds& bounds)
{
//Verify basics..
VTKM_TEST_ASSERT(ds.GetNumberOfFields() == 2, "Wrong number of fields.");
VTKM_TEST_ASSERT(ds.GetNumberOfCoordinateSystems() == 1, "Wrong number of coordinate systems.");
VTKM_TEST_ASSERT(ds.GetNumberOfPoints() == numPoints, "Wrong number of coordinates.");
VTKM_TEST_ASSERT(ds.GetNumberOfCells() == numCells, "Wrong number of cells.");
// test various field-getting methods and associations
try
{
ds.GetCellField("cellvar");
}
catch (...)
{
VTKM_TEST_FAIL("Failed to get field 'cellvar' with Association::CELL_SET.");
}
try
{
ds.GetPointField("pointvar");
}
catch (...)
{
VTKM_TEST_FAIL("Failed to get field 'pointvar' with ASSOC_POINT_SET.");
}
//Make sure the bounds are correct.
vtkm::Bounds res = ds.GetCoordinateSystem().GetBounds();
VTKM_TEST_ASSERT(test_equal(bounds, res), "Bounds of coordinates do not match");
if (dim == 1)
{
vtkm::cont::CellSetStructured<1> cellSet;
ds.GetCellSet().CopyTo(cellSet);
vtkm::IdComponent shape = cellSet.GetCellShape();
VTKM_TEST_ASSERT(shape == vtkm::CELL_SHAPE_LINE, "Wrong element type");
}
else if (dim == 2)
{
vtkm::cont::CellSetStructured<2> cellSet;
ds.GetCellSet().CopyTo(cellSet);
vtkm::IdComponent shape = cellSet.GetCellShape();
VTKM_TEST_ASSERT(shape == vtkm::CELL_SHAPE_QUAD, "Wrong element type");
}
else if (dim == 3)
{
vtkm::cont::CellSetStructured<3> cellSet;
ds.GetCellSet().CopyTo(cellSet);
vtkm::IdComponent shape = cellSet.GetCellShape();
VTKM_TEST_ASSERT(shape == vtkm::CELL_SHAPE_HEXAHEDRON, "Wrong element type");
}
}
template <typename T>
void FillArray(std::vector<T>& arr, vtkm::Id size, vtkm::IdComponent fillMethod)
{
arr.resize(static_cast<std::size_t>(size));
arr[0] = T(0);
for (size_t i = 1; i < static_cast<std::size_t>(size); i++)
{
T xi = static_cast<T>(i);
switch (fillMethod)
{
case 0:
break;
case 1:
xi /= static_cast<vtkm::Float32>(size - 1);
break;
case 2:
xi *= 2;
break;
case 3:
xi *= 0.1f;
break;
case 4:
xi *= xi;
break;
default:
VTKM_TEST_FAIL("Bad internal test state: invalid fill method.");
}
arr[i] = xi;
}
}
template <typename T>
void RectilinearTests()
{
const vtkm::Id NUM_TRIALS = 10;
const vtkm::Id MAX_DIM_SIZE = 20;
const vtkm::Id NUM_FILL_METHODS = 5;
vtkm::cont::DataSetBuilderRectilinear dataSetBuilder;
std::uniform_int_distribution<vtkm::Id> randomDim(1, MAX_DIM_SIZE);
std::uniform_int_distribution<vtkm::IdComponent> randomFill(0, NUM_FILL_METHODS - 1);
for (vtkm::Id trial = 0; trial < NUM_TRIALS; trial++)
{
std::cout << "Trial " << trial << std::endl;
vtkm::cont::DataSet dataSet;
vtkm::Id3 dimensions(
randomDim(g_RandomGenerator), randomDim(g_RandomGenerator), randomDim(g_RandomGenerator));
std::cout << "Dimensions: " << dimensions << std::endl;
vtkm::IdComponent fillMethodX = randomFill(g_RandomGenerator);
vtkm::IdComponent fillMethodY = randomFill(g_RandomGenerator);
vtkm::IdComponent fillMethodZ = randomFill(g_RandomGenerator);
std::cout << "Fill methods: [" << fillMethodX << "," << fillMethodY << "," << fillMethodZ << "]"
<< std::endl;
std::vector<T> xCoordinates;
std::vector<T> yCoordinates;
std::vector<T> zCoordinates;
FillArray(xCoordinates, dimensions[0], fillMethodX);
FillArray(yCoordinates, dimensions[1], fillMethodY);
FillArray(zCoordinates, dimensions[2], fillMethodZ);
vtkm::Id numPoints = 1, numCells = 1;
vtkm::Bounds bounds(0, 0, 0, 0, 0, 0);
int ndims = 0;
std::cout << "1D parameters" << std::endl;
bounds.X = vtkm::Range(xCoordinates.front(), xCoordinates.back());
numPoints *= dimensions[0];
if (dimensions[0] > 1)
{
numCells = dimensions[0] - 1;
ndims += 1;
}
if (ndims)
{
std::vector<T> varP1D(static_cast<unsigned long>(numPoints));
for (unsigned long i = 0; i < static_cast<unsigned long>(numPoints); i++)
{
float fi = static_cast<float>(i);
varP1D[i] = static_cast<T>(fi * 1.1f);
}
std::vector<T> varC1D(static_cast<unsigned long>(numCells));
for (unsigned long i = 0; i < static_cast<unsigned long>(numCells); i++)
{
float fi = static_cast<float>(i);
varC1D[i] = static_cast<T>(fi * 1.1f);
}
std::cout << " Create with std::vector" << std::endl;
dataSet = dataSetBuilder.Create(xCoordinates);
dataSet.AddPointField("pointvar", varP1D);
dataSet.AddCellField("cellvar", varC1D);
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
}
std::cout << "2D parameters" << std::endl;
bounds.Y = vtkm::Range(yCoordinates.front(), yCoordinates.back());
numPoints *= dimensions[1];
if (dimensions[1] > 1)
{
numCells *= dimensions[1] - 1;
ndims += 1;
}
if (ndims)
{
std::vector<T> varP2D(static_cast<unsigned long>(numPoints));
for (unsigned long i = 0; i < static_cast<unsigned long>(numPoints); i++)
{
float fi = static_cast<float>(i);
varP2D[i] = static_cast<T>(fi * 1.1f);
}
std::vector<T> varC2D(static_cast<unsigned long>(numCells));
for (unsigned long i = 0; i < static_cast<unsigned long>(numCells); i++)
{
float fi = static_cast<float>(i);
varC2D[i] = static_cast<T>(fi * 1.1f);
}
std::cout << " Create with std::vector" << std::endl;
dataSet = dataSetBuilder.Create(xCoordinates, yCoordinates);
dataSet.AddPointField("pointvar", varP2D);
dataSet.AddCellField("cellvar", varC2D);
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
std::cout << " Create with C array" << std::endl;
dataSet = dataSetBuilder.Create(
dimensions[0], dimensions[1], xCoordinates.data(), yCoordinates.data());
dataSet.AddPointField("pointvar", varP2D.data(), numPoints);
dataSet.AddCellField("cellvar", varC2D.data(), numCells);
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
std::cout << " Create with ArrayHandle" << std::endl;
dataSet =
dataSetBuilder.Create(vtkm::cont::make_ArrayHandle(xCoordinates, vtkm::CopyFlag::Off),
vtkm::cont::make_ArrayHandle(yCoordinates, vtkm::CopyFlag::Off));
dataSet.AddPointField("pointvar", vtkm::cont::make_ArrayHandle(varP2D, vtkm::CopyFlag::Off));
dataSet.AddCellField("cellvar", vtkm::cont::make_ArrayHandle(varC2D, vtkm::CopyFlag::Off));
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
}
std::cout << "3D parameters" << std::endl;
bounds.Z = vtkm::Range(zCoordinates.front(), zCoordinates.back());
numPoints *= dimensions[2];
if (dimensions[2] > 1)
{
numCells *= dimensions[2] - 1;
ndims += 1;
}
if (ndims)
{
std::vector<T> varP3D(static_cast<unsigned long>(numPoints));
for (unsigned long i = 0; i < static_cast<unsigned long>(numPoints); i++)
{
float fi = static_cast<float>(i);
varP3D[i] = static_cast<T>(fi * 1.1f);
}
std::vector<T> varC3D(static_cast<unsigned long>(numCells));
for (unsigned long i = 0; i < static_cast<unsigned long>(numCells); i++)
{
float fi = static_cast<float>(i);
varC3D[i] = static_cast<T>(fi * 1.1f);
}
std::cout << " Create with std::vector" << std::endl;
dataSet = dataSetBuilder.Create(xCoordinates, yCoordinates, zCoordinates);
dataSet.AddPointField("pointvar", varP3D);
dataSet.AddCellField("cellvar", varC3D);
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
std::cout << " Create with C array" << std::endl;
dataSet = dataSetBuilder.Create(dimensions[0],
dimensions[1],
dimensions[2],
xCoordinates.data(),
yCoordinates.data(),
zCoordinates.data());
dataSet.AddPointField("pointvar", vtkm::cont::make_ArrayHandle(varP3D, vtkm::CopyFlag::Off));
dataSet.AddCellField("cellvar", vtkm::cont::make_ArrayHandle(varC3D, vtkm::CopyFlag::Off));
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
std::cout << " Create with ArrayHandle" << std::endl;
dataSet =
dataSetBuilder.Create(vtkm::cont::make_ArrayHandle(xCoordinates, vtkm::CopyFlag::Off),
vtkm::cont::make_ArrayHandle(yCoordinates, vtkm::CopyFlag::Off),
vtkm::cont::make_ArrayHandle(zCoordinates, vtkm::CopyFlag::Off));
dataSet.AddPointField("pointvar", vtkm::cont::make_ArrayHandle(varP3D, vtkm::CopyFlag::Off));
dataSet.AddCellField("cellvar", vtkm::cont::make_ArrayHandle(varC3D, vtkm::CopyFlag::Off));
ValidateDataSet(dataSet, ndims, numPoints, numCells, bounds);
}
}
}
void TestDataSetBuilderRectilinear()
{
vtkm::UInt32 seed = static_cast<vtkm::UInt32>(std::time(nullptr));
std::cout << "Seed: " << seed << std::endl;
g_RandomGenerator.seed(seed);
std::cout << "======== Float32 ==========================" << std::endl;
RectilinearTests<vtkm::Float32>();
std::cout << "======== Float64 ==========================" << std::endl;
RectilinearTests<vtkm::Float64>();
}
} // namespace DataSetBuilderRectilinearNamespace
int UnitTestDataSetBuilderRectilinear(int argc, char* argv[])
{
using namespace DataSetBuilderRectilinearNamespace;
return vtkm::cont::testing::Testing::Run(TestDataSetBuilderRectilinear, argc, argv);
}
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