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

#include "Image.h"
#include "PngWriter.h"

#include "ImagePrimitives.h"

#include <iostream>

int main()
{
    unsigned width = 200;
    unsigned height = 200;
    unsigned numChannels = 3;
    auto image = Image<unsigned char>::Create(width, height);
    image->setNumChannels(numChannels);

    std::vector<unsigned char> data(image->getBytesPerRow()*height, 0);

    ImagePrimitives::drawAlternatingStrips(data, width,height, numChannels, image->getBytesPerRow());
    image->setData(data);

    PngWriter writer;
    writer.setPath("test.png");
    writer.write(image);

    return 0;
}