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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include <iostream>
#include "itkPolyLineParametricPath.h"
#include "itkChainCodePath.h"
#include "itkFourierSeriesPath.h"
#include "itkPathToChainCodePathFilter.h"
#include "itkChainCodeToFourierSeriesPathFilter.h"
#include "itkTestingMacros.h"
int
itkChainCodeToFourierSeriesPathFilterTest(int, char *[])
{
constexpr unsigned int Dimension = 2;
using PolyLinePathType = itk::PolyLineParametricPath<Dimension>;
using ChainPathType = itk::ChainCodePath<Dimension>;
using FSPathType = itk::FourierSeriesPath<Dimension>;
using VertexType = PolyLinePathType::VertexType;
using PathToChainCodePathFilterType = itk::PathToChainCodePathFilter<PolyLinePathType, ChainPathType>;
using ChainCodeToFSPathFilterType = itk::ChainCodeToFourierSeriesPathFilter<ChainPathType, FSPathType>;
bool passed = true;
// Setup the path
std::cout << "Making a triangle Path with v0 at (30,30) -> (30,33) -> (33,33)" << std::endl;
VertexType v;
auto inputPath = PolyLinePathType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(inputPath, PolyLineParametricPath, ParametricPath);
v.Fill(30);
inputPath->AddVertex(v);
v[0] = 30;
v[1] = 33;
inputPath->AddVertex(v);
v.Fill(33);
inputPath->AddVertex(v);
v.Fill(30);
inputPath->AddVertex(v);
// Set up the first filter
auto pathToChainCodePathFilter = PathToChainCodePathFilterType::New();
pathToChainCodePathFilter->SetInput(inputPath);
ChainPathType::Pointer chainPath = pathToChainCodePathFilter->GetOutput();
// Set up the second filter
auto chainCodeToFSPathFilter = ChainCodeToFSPathFilterType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(chainCodeToFSPathFilter, ChainCodeToFourierSeriesPathFilter, PathToPathFilter);
chainCodeToFSPathFilter->SetInput(pathToChainCodePathFilter->GetOutput());
FSPathType::Pointer outputPath = chainCodeToFSPathFilter->GetOutput();
chainCodeToFSPathFilter->Update();
std::cout << "PathToChainCodePathFilter: open test path is " << chainPath->NumberOfSteps() << " steps" << std::endl;
if (chainPath->NumberOfSteps() != 9)
{
passed = false;
}
std::cout << "ChainCodeToFourierSeriesPathFilter: smoothed path is from [" << outputPath->Evaluate(0.0) << "] to ["
<< outputPath->Evaluate(1.0) << "] with a center at [" << outputPath->Evaluate(0.5) << "]." << std::endl;
// Floating point can be inprecise, so convert to rounded int for comparison:
if (static_cast<int>(0.5 + 1000 * (outputPath->Evaluate(1.0))[0]) !=
static_cast<int>(0.5 + 1000 * (outputPath->Evaluate(0.0))[0]) ||
static_cast<int>(0.5 + 1000 * (outputPath->Evaluate(1.0))[1]) !=
static_cast<int>(0.5 + 1000 * (outputPath->Evaluate(0.0))[1]) ||
static_cast<int>(0.5 + (outputPath->Evaluate(0.5))[0]) < 31 ||
static_cast<int>(0.5 + (outputPath->Evaluate(0.5))[0]) > 32 ||
static_cast<int>(0.5 + (outputPath->Evaluate(0.5))[1]) != 33)
{
passed = false;
}
if (passed)
{
std::cout << "Test passed" << std::endl;
return EXIT_SUCCESS;
}
else
{
std::cout << "Test failed" << std::endl;
return EXIT_FAILURE;
}
}
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