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#include "imgen.h"
#include "ppm_pixel_stream.h"
namespace imgen {
void write_ppm(
const std::string& path,
const std::size_t width,
const std::size_t height,
std::function<color(std::ptrdiff_t, std::ptrdiff_t)> generator
) {
ppm_pixel_stream file(path, width, height);
const std::ptrdiff_t min_y = height / 2 * -1;
const std::ptrdiff_t max_y = height / 2;
const std::ptrdiff_t min_x = width / 2 * -1;
const std::ptrdiff_t max_x = width / 2;
for ( std::ptrdiff_t posY = max_y; posY > min_y; --posY ) {
for ( std::ptrdiff_t posX = min_x; posX < max_x; ++posX ) {
file << generator(posX, posY);
}
}
}
}
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