Method SavePNGTransparent

Source/Images/image_export.cpp:131–162

}

void ImageExport::SavePNGTransparent(const char *file_path, unsigned char *data, unsigned long width, unsigned long height, unsigned short levels) {
    std::vector<unsigned char> scaled_data;
    ImageExport::ScaleImageUp(data, levels, &width, &height, &scaled_data);

    int bytespp = 4;
    for (unsigned y = 0; y < height; y++) {
        unsigned char *bits = scaled_data.data() + y * width * 4;
        for (unsigned x = 0; x < width; x++) {
            // Set pixel color to green with a transparency of 128
            bits[0] = min(255, (int)((bits[0] / 255.0f / (scaled_data[y * width * 4 + x * 4 + 3] / 255.0f)) * 255));
            bits[1] = min(255, (int)((bits[1] / 255.0f / (scaled_data[y * width * 4 + x * 4 + 3] / 255.0f)) * 255));
            bits[2] = min(255, (int)((bits[2] / 255.0f / (scaled_data[y * width * 4 + x * 4 + 3] / 255.0f)) * 255));
            bits[3] = scaled_data[y * width * 4 + x * 4 + 3];
            // jump to next pixel
            bits += bytespp;
        }
    }

    CreateParentDirs(file_path);
#ifdef _WIN32
    createfile(file_path);
    std::string short_path(file_path);
    ShortenWindowsPath(short_path);
    if (!stbi_write_png(short_path.c_str(), width, height, 4, scaled_data.data(), width * 4)) {
        DisplayError("Error", "Problem exporting .png file");
    }
#else
    if (!stbi_write_png(file_path, width, height, 4, scaled_data.data(), width * 4)) {
        DisplayError("Error", "Problem exporting .png file");
    }
#endif
}

void ImageExport::SaveJPEG(const char *abs_path, unsigned char *data, unsigned long width, unsigned long height) {
    CreateParentDirs(abs_path);