stuff-from-scratch/test/image/TestPngWriter.cpp

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#include "Image.h"
#include "PngWriter.h"
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#include "File.h"
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#include "BitStream.h"
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#include "ImagePrimitives.h"
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#include <iostream>
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int main()
{
unsigned width = 200;
unsigned height = 200;
unsigned numChannels = 3;
auto image = Image<unsigned char>::Create(width, height);
image->setNumChannels(numChannels);
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std::vector<unsigned char> data(image->getBytesPerRow()*height, 0);
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ImagePrimitives::drawAlternatingStrips(data, width,height, numChannels, image->getBytesPerRow());
image->setData(data);
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PngWriter writer;
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writer.setPath("test.png");
writer.write(image);
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File test_file("test.png");
test_file.SetAccessMode(File::AccessMode::Read);
test_file.Open(true);
while(auto byte = test_file.readNextByte())
{
std::cout << static_cast<unsigned>(*byte) << std::endl;
}
test_file.Close();
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return 0;
}