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Create generic bounding box function.

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Bert Peters
2019-12-17 07:28:39 +01:00
parent 1968e4c5b4
commit d0243fcf4d
3 changed files with 22 additions and 19 deletions
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12
2019/src/day13.cpp
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@@ -41,16 +41,10 @@ namespace {
// Determine bounding box
using limits = std::numeric_limits<int>;
std::int64_t left_edge = limits::max(), right_edge = limits::min(), top_edge = limits::max(), bottom_edge = limits::min();
for (auto& entry : screen) {
left_edge = std::min(entry.first[0], left_edge);
right_edge = std::max(entry.first[0], right_edge);
top_edge = std::min(entry.first[1], top_edge);
bottom_edge = std::max(entry.first[1], bottom_edge);
}
const auto [lower, upper] = aoc2019::bounding_box(screen);
for (auto y = top_edge; y <= bottom_edge; ++y) {
for (auto x = left_edge; x <= right_edge; ++x) {
for (auto y = lower[1]; y <= upper[1]; ++y) {
for (auto x = lower[0]; x <= upper[0]; ++x) {
char c = ' ';
if (auto it = screen.find({x, y}); it != screen.end()) {
switch (it->second) {