cxtestUtilities.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

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   this list of conditions and the following disclaimer.

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   may be used to endorse or promote products derived from this software 
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#include "cxtestUtilities.h"

#include "vtkImageData.h"
#include "cxImage.h"
#include "cxVolumeHelpers.h"
#include "cxTypeConversions.h"
#include "cxDataLocations.h"

#ifdef CX_WINDOWS
        #include <Windows.h>
#endif

namespace cxtest
{
/*
// --------------------------------------------------------
TestDataStorage* TestDataStorage::mInstance = NULL; ///< static member
// --------------------------------------------------------
void TestDataStorage::shutdown()
{
        delete mInstance;
        mInstance = NULL;
}
TestDataStorage* TestDataStorage::getInstance()
{
    if (!mInstance)
        mInstance = new TestDataStorage();
        return mInstance;
}
// --------------------------------------------------------
// --------------------------------------------------------
// --------------------------------------------------------
*/

QString Utilities::getDataRoot(QString suffix)
{
        QString root = cx::DataLocations::getTestDataPath();
        if (suffix.isEmpty())
                return root;
        else
                return QString("%1/%2").arg(root).arg(suffix);
}


vtkImageDataPtr Utilities::create3DVtkImageData(Eigen::Array3i dim, const unsigned int voxelValue)
{
        return cx::generateVtkImageData(dim, cx::Vector3D(1,1,1), voxelValue);
}

cx::ImagePtr Utilities::create3DImage(Eigen::Array3i dim, const unsigned int voxelValue)
{
        return create3DImage(dim, cx::Vector3D(1,1,1), voxelValue);
}

cx::ImagePtr Utilities::create3DImage(Eigen::Array3i dim, cx::Vector3D spacing, const unsigned int voxelValue)
{
        vtkImageDataPtr vtkImageData = cx::generateVtkImageData(dim, spacing, voxelValue);
        QString unique_string = qstring_cast(reinterpret_cast<long>(vtkImageData.GetPointer()));
        QString imagesUid = QString("TESTUID_%2_%1").arg(unique_string);
        cx::ImagePtr image(new cx::Image(imagesUid, vtkImageData));

        return image;
}


std::vector<cx::ImagePtr> Utilities::create3DImages(unsigned int count, Eigen::Array3i dim, const unsigned int voxelValue)
{
        std::vector<cx::ImagePtr> retval;
        for (unsigned i=0; i<count; ++i)
        {
                cx::ImagePtr image = cxtest::Utilities::create3DImage(dim, voxelValue);
                retval.push_back(image);
        }
        return retval;
}

unsigned int Utilities::getNumberOfVoxelsAboveThreshold(vtkImageDataPtr image, int threshold, int component)
{
        if (!image)
                return 0;

        unsigned char* ptr = reinterpret_cast<unsigned char*>(image->GetScalarPointer());
        unsigned int pixelCount = 0;
        for (unsigned i = 0; i < image->GetDimensions()[0]*image->GetDimensions()[1]*image->GetDimensions()[2]; ++i)
        {
                if (ptr[i*image->GetNumberOfScalarComponents()+component] > threshold)
                        ++pixelCount;
        }
        return pixelCount;
}

unsigned int Utilities::getNumberOfNonZeroVoxels(vtkImageDataPtr image)
{
        return getNumberOfVoxelsAboveThreshold(image, 0);
}

double Utilities::getFractionOfVoxelsAboveThreshold(vtkImageDataPtr image, int threshold, int component)
{
        unsigned int hits = getNumberOfVoxelsAboveThreshold(image, threshold, component);
        Eigen::Array3i dim(image->GetDimensions());
        unsigned int totalPixels = dim[0]*dim[1]*dim[2];
        if (totalPixels==0)
                return -1;
        return double(hits)/double(totalPixels);
}

void Utilities::sleep_sec(int seconds)
{
#ifndef CX_WINDOWS
                sleep(seconds); //seconds
#else
                Sleep(seconds*1000); //milliseconds
#endif
}

} /* namespace cxtest */