mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 18:08:59 +00:00
be7f06bbe7
`CoordinateSystem` differed from `Field` in that its `GetData` method returned an `ArrayHandleVirtualCoordinates` instead of a `VariantArrayHandle`. This is probably confusing since `CoordianteSystem` inherits `Field` and has a pretty dramatic difference in this behavior. In preparation to deprecate `ArrayHandleVirtualCoordinates`, this changes `CoordiantSystem` to be much more like `Field`. (In the future, we may change the `CoordinateSystem` to point to a `Field` rather than be a special `Field`.) A method named `GetDataAsMultiplexer` has been added to `CoordinateSystem`. This method allows you to get data from `CoordinateSystem` as a single array type without worrying about creating functors to handle different types and without needing virtual methods.
204 lines
6.8 KiB
C++
204 lines
6.8 KiB
C++
//============================================================================
|
|
// 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/CellSetExplicit.h>
|
|
#include <vtkm/cont/DataSet.h>
|
|
#include <vtkm/cont/testing/Testing.h>
|
|
#include <vtkm/worklet/CoordinateSystemTransform.h>
|
|
#include <vtkm/worklet/DispatcherMapField.h>
|
|
|
|
#include <random>
|
|
#include <vector>
|
|
|
|
namespace
|
|
{
|
|
std::mt19937 randGenerator;
|
|
|
|
enum CoordinateType
|
|
{
|
|
CART = 0,
|
|
CYL,
|
|
SPH
|
|
};
|
|
|
|
vtkm::cont::DataSet MakeTestDataSet(const CoordinateType& cType)
|
|
{
|
|
vtkm::cont::DataSet dataSet;
|
|
|
|
std::vector<vtkm::Vec3f> coordinates;
|
|
const vtkm::Id dim = 5;
|
|
if (cType == CART)
|
|
{
|
|
for (vtkm::Id j = 0; j < dim; ++j)
|
|
{
|
|
vtkm::FloatDefault z =
|
|
static_cast<vtkm::FloatDefault>(j) / static_cast<vtkm::FloatDefault>(dim - 1);
|
|
for (vtkm::Id i = 0; i < dim; ++i)
|
|
{
|
|
vtkm::FloatDefault x =
|
|
static_cast<vtkm::FloatDefault>(i) / static_cast<vtkm::FloatDefault>(dim - 1);
|
|
vtkm::FloatDefault y = (x * x + z * z) / 2.0f;
|
|
coordinates.push_back(vtkm::make_Vec(x + 0, y + 0, z + 0));
|
|
}
|
|
}
|
|
}
|
|
else if (cType == CYL)
|
|
{
|
|
vtkm::FloatDefault R = 1.0f;
|
|
for (vtkm::Id j = 0; j < dim; j++)
|
|
{
|
|
vtkm::FloatDefault Z =
|
|
static_cast<vtkm::FloatDefault>(j) / static_cast<vtkm::FloatDefault>(dim - 1);
|
|
for (vtkm::Id i = 0; i < dim; i++)
|
|
{
|
|
vtkm::FloatDefault Theta = vtkm::TwoPif() *
|
|
(static_cast<vtkm::FloatDefault>(i) / static_cast<vtkm::FloatDefault>(dim - 1));
|
|
coordinates.push_back(vtkm::make_Vec(R, Theta, Z));
|
|
}
|
|
}
|
|
}
|
|
else if (cType == SPH)
|
|
{
|
|
//Spherical coordinates have some degenerate cases, so provide some good cases.
|
|
vtkm::FloatDefault R = 1.0f;
|
|
vtkm::FloatDefault eps = vtkm::Epsilon<float>();
|
|
std::vector<vtkm::FloatDefault> Thetas = {
|
|
eps, vtkm::Pif() / 4, vtkm::Pif() / 3, vtkm::Pif() / 2, vtkm::Pif() - eps
|
|
};
|
|
std::vector<vtkm::FloatDefault> Phis = {
|
|
eps, vtkm::TwoPif() / 4, vtkm::TwoPif() / 3, vtkm::TwoPif() / 2, vtkm::TwoPif() - eps
|
|
};
|
|
for (std::size_t i = 0; i < Thetas.size(); i++)
|
|
for (std::size_t j = 0; j < Phis.size(); j++)
|
|
coordinates.push_back(vtkm::make_Vec(R, Thetas[i], Phis[j]));
|
|
}
|
|
|
|
vtkm::Id numCells = (dim - 1) * (dim - 1);
|
|
dataSet.AddCoordinateSystem(
|
|
vtkm::cont::make_CoordinateSystem("coordinates", coordinates, vtkm::CopyFlag::On));
|
|
|
|
vtkm::cont::CellSetExplicit<> cellSet;
|
|
cellSet.PrepareToAddCells(numCells, numCells * 4);
|
|
for (vtkm::Id j = 0; j < dim - 1; ++j)
|
|
{
|
|
for (vtkm::Id i = 0; i < dim - 1; ++i)
|
|
{
|
|
cellSet.AddCell(vtkm::CELL_SHAPE_QUAD,
|
|
4,
|
|
vtkm::make_Vec<vtkm::Id>(
|
|
j * dim + i, j * dim + i + 1, (j + 1) * dim + i + 1, (j + 1) * dim + i));
|
|
}
|
|
}
|
|
cellSet.CompleteAddingCells(vtkm::Id(coordinates.size()));
|
|
|
|
dataSet.SetCellSet(cellSet);
|
|
return dataSet;
|
|
}
|
|
|
|
void ValidateCoordTransform(const vtkm::cont::CoordinateSystem& coords,
|
|
const vtkm::cont::ArrayHandle<vtkm::Vec3f>& transform,
|
|
const vtkm::cont::ArrayHandle<vtkm::Vec3f>& doubleTransform,
|
|
const std::vector<bool>& isAngle)
|
|
{
|
|
auto points = coords.GetDataAsMultiplexer();
|
|
VTKM_TEST_ASSERT(points.GetNumberOfValues() == transform.GetNumberOfValues() &&
|
|
points.GetNumberOfValues() == doubleTransform.GetNumberOfValues(),
|
|
"Incorrect number of points in point transform");
|
|
|
|
//The double transform should produce the same result.
|
|
auto pointsPortal = points.ReadPortal();
|
|
auto resultsPortal = doubleTransform.ReadPortal();
|
|
|
|
for (vtkm::Id i = 0; i < points.GetNumberOfValues(); i++)
|
|
{
|
|
vtkm::Vec3f p = pointsPortal.Get(i);
|
|
vtkm::Vec3f r = resultsPortal.Get(i);
|
|
bool isEqual = true;
|
|
for (vtkm::IdComponent j = 0; j < 3; j++)
|
|
{
|
|
if (isAngle[static_cast<std::size_t>(j)])
|
|
isEqual &= (test_equal(p[j], r[j]) || test_equal(p[j] + vtkm::TwoPif(), r[j]) ||
|
|
test_equal(p[j], r[j] + vtkm::TwoPif()));
|
|
else
|
|
isEqual &= test_equal(p[j], r[j]);
|
|
}
|
|
VTKM_TEST_ASSERT(isEqual, "Wrong result for PointTransform worklet");
|
|
}
|
|
}
|
|
}
|
|
|
|
void TestCoordinateSystemTransform()
|
|
{
|
|
std::cout << "Testing CylindricalCoordinateTransform Worklet" << std::endl;
|
|
|
|
//Test cartesian to cyl
|
|
vtkm::cont::DataSet dsCart = MakeTestDataSet(CART);
|
|
vtkm::worklet::CylindricalCoordinateTransform cylTrn;
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::Vec3f> carToCylPts;
|
|
vtkm::cont::ArrayHandle<vtkm::Vec3f> revResult;
|
|
|
|
cylTrn.SetCartesianToCylindrical();
|
|
cylTrn.Run(dsCart.GetCoordinateSystem(), carToCylPts);
|
|
|
|
cylTrn.SetCylindricalToCartesian();
|
|
cylTrn.Run(carToCylPts, revResult);
|
|
ValidateCoordTransform(
|
|
dsCart.GetCoordinateSystem(), carToCylPts, revResult, { false, false, false });
|
|
|
|
//Test cylindrical to cartesian
|
|
vtkm::cont::DataSet dsCyl = MakeTestDataSet(CYL);
|
|
vtkm::cont::ArrayHandle<vtkm::Vec3f> cylToCarPts;
|
|
cylTrn.SetCylindricalToCartesian();
|
|
cylTrn.Run(dsCyl.GetCoordinateSystem(), cylToCarPts);
|
|
|
|
cylTrn.SetCartesianToCylindrical();
|
|
cylTrn.Run(cylToCarPts, revResult);
|
|
ValidateCoordTransform(
|
|
dsCyl.GetCoordinateSystem(), cylToCarPts, revResult, { false, true, false });
|
|
|
|
//Spherical transform
|
|
//Test cartesian to sph
|
|
vtkm::worklet::SphericalCoordinateTransform sphTrn;
|
|
vtkm::cont::ArrayHandle<vtkm::Vec3f> carToSphPts;
|
|
|
|
sphTrn.SetCartesianToSpherical();
|
|
sphTrn.Run(dsCart.GetCoordinateSystem(), carToSphPts);
|
|
|
|
sphTrn.SetSphericalToCartesian();
|
|
sphTrn.Run(carToSphPts, revResult);
|
|
ValidateCoordTransform(
|
|
dsCart.GetCoordinateSystem(), carToSphPts, revResult, { false, true, true });
|
|
|
|
//Test spherical to cartesian
|
|
vtkm::cont::ArrayHandle<vtkm::Vec3f> sphToCarPts;
|
|
vtkm::cont::DataSet dsSph = MakeTestDataSet(SPH);
|
|
|
|
sphTrn.SetSphericalToCartesian();
|
|
sphTrn.Run(dsSph.GetCoordinateSystem(), sphToCarPts);
|
|
|
|
sphTrn.SetCartesianToSpherical();
|
|
sphTrn.Run(sphToCarPts, revResult);
|
|
|
|
ValidateCoordTransform(
|
|
dsSph.GetCoordinateSystem(), sphToCarPts, revResult, { false, true, true });
|
|
sphTrn.SetSphericalToCartesian();
|
|
sphTrn.Run(dsSph.GetCoordinateSystem(), sphToCarPts);
|
|
sphTrn.SetCartesianToSpherical();
|
|
sphTrn.Run(sphToCarPts, revResult);
|
|
ValidateCoordTransform(
|
|
dsSph.GetCoordinateSystem(), sphToCarPts, revResult, { false, true, true });
|
|
}
|
|
|
|
int UnitTestCoordinateSystemTransform(int argc, char* argv[])
|
|
{
|
|
return vtkm::cont::testing::Testing::Run(TestCoordinateSystemTransform, argc, argv);
|
|
}
|