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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 "itkImageFileReader.h"
#include <iostream>
#include "itkTestingMacros.h"
int itkConvertBufferTest(int, char* [])
{
int piInit[3] = {3,1,4};
itk::RGBPixel<int> pi = piInit;
int piaInit[4] = {3,1,4,1};
itk::RGBAPixel<int> pia = piaInit;
std::cerr << "RGBPixel<int>: " << pi << "\n";
std::cerr << "RGBAPixel<int>: " << pia << "\n";
itk::RGBAPixel<unsigned char> ucpa[3];
itk::RGBAPixel<float> pa[3];
int ipa[] = {1, 2, 3};
itk::RGBPixel<int> p[3];
// convert from int to RGB<int>
itk::ConvertPixelBuffer<int, itk::RGBPixel<int>,
itk::DefaultConvertPixelTraits<itk::RGBPixel<int> > >::
Convert(ipa, 1, p, 3);
std::cerr << "RGB 111 222 333 = ";
for(int j=0; j < 3; ++j)
{
std::cerr << p[j] << ", ";
for(unsigned long k=0; k < sizeof(p) / sizeof(itk::RGBPixel<int>); ++k)
{
TEST_EXPECT_EQUAL(p[j][k], ipa[j]);
}
}
std::cerr << "\n";
float ipa3com[] = {1.f,1.f,1.f, 2.f,2.f,2.f, 3.f,3.f,3.f};
itk::RGBPixel<float> pf[3];
// convert from float[] to RGB<float>
itk::ConvertPixelBuffer<float, itk::RGBPixel<float>,
itk::DefaultConvertPixelTraits<itk::RGBPixel<float> > >::
Convert(ipa3com, 3, pf, 3);
std::cerr << "itk::RGBPixel<float> array converted from float\n";
for(unsigned int j = 0; j < 3; ++j)
{
std::cerr << pf[j] << " ";
for(unsigned int k = 0; k < sizeof(pf) / sizeof(itk::RGBPixel<float>); ++k)
{
TEST_EXPECT_EQUAL(pf[k][j], ipa3com[j+k*3]);
}
}
std::cerr << "\n";
// convert from float[] to RGBA<float>
itk::ConvertPixelBuffer<float, itk::RGBAPixel<float>,
itk::DefaultConvertPixelTraits<itk::RGBAPixel<float> > >::
Convert(ipa3com, 3, pa, 3);
std::cerr << "itk::RGBAPixel<float> array \n";
for(unsigned int j = 0; j < 3; ++j)
{
std::cerr << pa[j] << " ";
for(unsigned int k = 0;
k < sizeof(pa) / sizeof(itk::RGBAPixel<float>);
++k
)
{
TEST_EXPECT_EQUAL(pa[k][j], ipa3com[j+k*3]);
}
}
TEST_EXPECT_EQUAL(pa[0][3], 1.f); // Alpha must be 1.0f for float input pixel.
std::cerr << "\n";
unsigned char ucipa3com[] = {1,1,1, 2,2,2, 3,3,3};
// convert from unsigned char[3] to RGBA<unsigned char>
itk::ConvertPixelBuffer<unsigned char, itk::RGBAPixel<unsigned char>,
itk::DefaultConvertPixelTraits<itk::RGBAPixel<unsigned char> > >::
Convert(ucipa3com, 3, ucpa, 3);
std::cerr << "itk::RGBAPixel<unsigned char> array \n";
for(unsigned int j = 0; j < 3; ++j)
{
std::cerr << ucpa[j] << " ";
for(unsigned int k = 0;
k < sizeof(ucpa) / sizeof(itk::RGBAPixel<unsigned char>);
++k
)
{
TEST_EXPECT_EQUAL(ucpa[k][j], ucipa3com[j+k*3]);
}
}
TEST_EXPECT_EQUAL(ucpa[0][3], 255); // Alpha must be 255 for unsigned char input pixel type
std::cerr << "\n";
// create an initial array of floats
float farray[] = {1.1f, 2.2f, 3.3f, 4.4f, 5.5f, 6.4f, 7.4f, 8.8f, 9.9f };
// set the size of the array in number of elements
const int arraySize = sizeof(farray)/sizeof(farray[0]);
double darray[arraySize]; // create a double array
int iarray[arraySize]; // create an int array
// convert the float array to a double array
itk::ConvertPixelBuffer<float, double,
itk::DefaultConvertPixelTraits<double> >::
Convert(farray, 1, darray, arraySize);
std::cerr << "\nfloat array : ";
for(int i =0; i < arraySize; ++i)
{
std::cerr << farray[i] << " ";
TEST_EXPECT_EQUAL(darray[i], static_cast<double>(farray[i]))
}
// convert a float array to an int array
itk::ConvertPixelBuffer<float, int,
itk::DefaultConvertPixelTraits<int> >::
Convert(farray, 1, iarray, arraySize);
std::cerr << "\nint array : ";
for(int i =0; i < arraySize; ++i)
{
std::cerr << iarray[i] << " ";
TEST_EXPECT_EQUAL(iarray[i], static_cast<int>(farray[i]));
}
// convert the int array to the float array
itk::ConvertPixelBuffer<int, float,
itk::DefaultConvertPixelTraits<float> >::
Convert(iarray, 1, farray, arraySize);
std::cerr << "\ndouble array : ";
for(int i =0; i < arraySize; ++i)
{
std::cerr << darray[i] << " ";
TEST_EXPECT_EQUAL(farray[i], static_cast<float>(iarray[i]));
}
std::cerr << "\n";
return EXIT_SUCCESS;
}
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