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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 "itkChainCodePath.h"
#include "itkTestingMacros.h"
int
itkChainCodePathTest(int, char *[])
{
constexpr unsigned int Dimension = 2;
using PathType = itk::ChainCodePath<Dimension>;
using IndexType = PathType::IndexType;
using OffsetType = PathType::OffsetType;
bool passed = true;
IndexType index;
OffsetType offset;
auto path = PathType::New();
ITK_EXERCISE_BASIC_OBJECT_METHODS(path, ChainCodePath, Path);
index[0] = 3;
index[1] = 5;
path->SetStart(index);
offset[0] = 0;
offset[1] = 1;
path->InsertStep(0, offset);
offset[0] = 1;
offset[1] = 1;
path->InsertStep(1, offset);
offset[0] = 1;
offset[1] = 0;
path->InsertStep(2, offset);
offset[0] = 1;
offset[1] = -1;
path->InsertStep(3, offset);
offset[0] = 0;
offset[1] = -1;
path->InsertStep(4, offset);
offset[0] = -1;
offset[1] = -1;
path->InsertStep(5, offset);
offset[0] = -1;
offset[1] = 0;
path->InsertStep(6, offset);
offset[0] = -1;
offset[1] = 1;
path->InsertStep(7, offset);
std::cout << "Path is " << path->NumberOfSteps() << " steps" << std::endl;
offset[0] = 0;
offset[1] = -1;
path->InsertStep(3, offset); // insert new step 3
offset = path->Evaluate(3);
std::cout << "Inserted new step[3] = " << offset << std::endl;
offset[0] = 1;
offset[1] = 0;
path->ChangeStep(4, offset); // rotate the down-right step (now step 4) CCW
offset = path->Evaluate(4);
std::cout << "Changed step[4] to " << offset << std::endl;
std::cout << "Path is " << path->NumberOfSteps() << " steps" << std::endl;
if (path->NumberOfSteps() != 9)
{
passed = false;
}
index = path->GetStart();
std::cout << "Starting at index: " << index << std::endl;
PathType::InputType endOfInput = path->EndOfInput();
std::cout << "End of input: " << itk::NumericTraits<PathType::InputType>::PrintType(endOfInput) << std::endl;
for (unsigned int input = 0;;)
{
offset = path->IncrementInput(input);
if (offset[0] || offset[1])
{
index = path->EvaluateToIndex(input);
std::cout << "Step[" << input - 1 << "] is " << offset;
std::cout << "\t to index " << index << std::endl;
}
else
{
break;
}
}
if (index != path->GetStart())
{
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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