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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* 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
*
* http://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 "itkTranslationTransform.h"
typedef itk::Vector<double,2> VectorType;
namespace
{
void PrintVector( const VectorType & v )
{
for( unsigned int i=0; i<VectorType::Dimension; i++)
{
std::cout << v[i] << ", ";
}
std::cout << std::endl;
}
}
int itkTranslationTransformTest(int ,char *[] )
{
int any = 0; // Any errors detected in testing?
VectorType vector2;
int i;
/* FIXME: This code exercises most of the methods but doesn't
actually check that the results are correct. */
/* Create a 2D identity transformation and show its parameters */
typedef itk::TranslationTransform<double,2> TransformType;
TransformType::Pointer id2 = TransformType::New();
vector2 = id2->GetOffset();
std::cout << "Vector from instantiating an identity transform:"
<< std::endl;
PrintVector( vector2 );
/* Create and show a simple 2D transform from given parameters */
vector2[0] = 5;
vector2[1] = 6;
TransformType::Pointer aff2 = TransformType::New();
aff2->SetOffset(vector2);
for (i = 0; i < 2; i++)
{
vector2[i] = 0.0;
}
std::cout << "Instantiation of a given 2D transform:"
<< std::endl << aff2;
TransformType::Pointer inverse2 = TransformType::New();
if(!aff2->GetInverse(inverse2))
{
std::cout << "Cannot create inverse transform" << std::endl;
return EXIT_FAILURE;
}
std::cout << "Inverse of the given transform:"
<< std::endl << inverse2;
inverse2 = dynamic_cast<TransformType*>(aff2->GetInverseTransform().GetPointer());
if(!inverse2)
{
std::cout << "Cannot create inverse transform" << std::endl;
return EXIT_FAILURE;
}
std::cout << "Inverse of the given transform:"
<< std::endl << inverse2;
/* Set parameters of a 2D transform */
vector2[0] = 2;
vector2[1] = 1;
aff2->SetOffset(vector2);
for (i = 0; i < 2; i++)
{
vector2[i] = 0.0;
}
vector2 = aff2->GetOffset();
std::cout << "Setting the offset in an existing transform:"
<< std::endl;
PrintVector( vector2 );
/* Try composition of two transformations */
aff2->Compose(aff2);
std::cout << "Result of a composition:"
<< std::endl << aff2;
/* Compose with a translation */
VectorType trans;
trans[0] = 1;
trans[1] = 2;
aff2->Translate(trans);
std::cout << "Result of a translation:"
<< std::endl << aff2;
/* Transform a point */
itk::Point<double, 2> u2, v2;
u2[0] = 3;
u2[1] = 5;
v2 = aff2->TransformPoint(u2);
std::cout << "Transform a point:" << std::endl
<< v2[0] << " , " << v2[1] << std::endl;
/* Back transform a point */
v2 = aff2->BackTransform(u2);
std::cout << "Back transform a point:" << std::endl
<< v2[0] << " , " << v2[1] << std::endl;
/* Transform a vnl_vector */
vnl_vector_fixed<double, 2> x2, y2;
x2[0] = 1;
x2[1] = 2;
y2 = aff2->TransformVector(x2);
std::cout << "Transform a vnl_vector:" << std::endl
<< y2[0] << " , " << y2[1] << std::endl;
/* Back transform a vector */
y2 = aff2->BackTransform(x2);
std::cout << "Back transform a vnl_vector:" << std::endl
<< y2[0] << " , " << y2[1] << std::endl;
/* Transform a vector */
itk::Vector<double, 2> u3, v3;
u3[0] = 3;
u3[1] = 5;
v3 = aff2->TransformVector(u3);
std::cout << "Transform a vector:" << std::endl
<< v3[0] << " , " << v3[1] << std::endl;
/* Back transform a vector */
v3 = aff2->BackTransform(u3);
std::cout << "Back transform a vector :" << std::endl
<< v3[0] << " , " << v3[1] << std::endl;
/* Transform a Covariant vector */
itk::Vector<double, 2> u4, v4;
u4[0] = 3;
u4[1] = 5;
v4 = aff2->TransformVector(u4);
std::cout << "Transform a Covariant vector:" << std::endl
<< v4[0] << " , " << v4[1] << std::endl;
/* Back transform a vector */
v4 = aff2->BackTransform(u4);
std::cout << "Back transform a vector :" << std::endl
<< v4[0] << " , " << v4[1] << std::endl;
return any;
}
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