void tga::print_image_map(FILE* fp, const std::vector<int>& grid, const ColorTable& ct) { for(std::vector<int>::const_iterator itr = grid.begin(); itr != grid.end(); ++itr) { if(*itr != INT_MIN) { const char index = ct.index_2_ct_index(*itr); fwrite(&index, 1, 1, fp); } } }