7 std::vector<ftxui::ColorInfo> info_gray;
8 std::vector<ftxui::ColorInfo> info_color;
9 for (
int i = 16; i < 256; ++i) {
12 info_gray.push_back(info);
14 info_color.push_back(info);
19 info_color.begin(), info_color.end(),
23 std::vector<std::vector<ftxui::ColorInfo>> info_columns(8);
24 info_columns[0] = info_gray;
25 for (
size_t i = 0; i < info_color.size(); ++i) {
26 info_columns[1 + 7 * i / info_color.size()].push_back(info_color[i]);
30 for (
auto& column : info_columns) {
31 std::sort(column.begin(), column.end(),
33 return A.value < B.value;
35 for (
int i = 0; i < int(column.size()) - 1; ++i) {
36 int best_index = i + 1;
37 int best_distance = 255 * 255 * 3;
38 for (
int j = i + 1; j < column.size(); ++j) {
39 int dx = column[i].red - column[j].red;
40 int dy = column[i].green - column[j].green;
41 int dz = column[i].blue - column[j].blue;
42 int distance = dx * dx + dy * dy + dz * dz;
43 if (best_distance > distance) {
44 best_distance = distance;
48 std::swap(column[i + 1], column[best_index]);
52 return std::move(info_columns);