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author | zheng_wenlong <wenlong_zheng@nexty-ele.com> | 2018-11-14 12:50:56 +0900 |
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committer | zheng_wenlong <wenlong_zheng@nexty-ele.com> | 2018-11-14 12:50:56 +0900 |
commit | 5d98ec36d66db8897f7e3e5120b43c50f379baea (patch) | |
tree | 361fb59acf02391203101c3a59aa49c813ecb550 /demo3/vertical/tbtnavi_demo/include/mapbox/geometry/envelope.hpp | |
parent | 110215ad40cd0c24ed5ae70430e45304d5c60fe1 (diff) |
Add tbtnavi for vertical mode
Add tbtnavi for vertical mode.
This application use waltham transmitter send video to horizontal mode.
Change-Id: Icc8bb14f9c83439d90f28d0960e435a43a5e5245
Signed-off-by: zheng_wenlong <wenlong_zheng@nexty-ele.com>
Diffstat (limited to 'demo3/vertical/tbtnavi_demo/include/mapbox/geometry/envelope.hpp')
-rw-r--r-- | demo3/vertical/tbtnavi_demo/include/mapbox/geometry/envelope.hpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/demo3/vertical/tbtnavi_demo/include/mapbox/geometry/envelope.hpp b/demo3/vertical/tbtnavi_demo/include/mapbox/geometry/envelope.hpp new file mode 100644 index 0000000..8603583 --- /dev/null +++ b/demo3/vertical/tbtnavi_demo/include/mapbox/geometry/envelope.hpp @@ -0,0 +1,33 @@ +#pragma once + +#include <mapbox/geometry/box.hpp> +#include <mapbox/geometry/for_each_point.hpp> + +#include <limits> + +namespace mapbox { +namespace geometry { + +template <typename G, typename T = typename G::coordinate_type> +box<T> envelope(G const& geometry) +{ + using limits = std::numeric_limits<T>; + + T min_t = limits::has_infinity ? -limits::infinity() : limits::min(); + T max_t = limits::has_infinity ? limits::infinity() : limits::max(); + + point<T> min(max_t, max_t); + point<T> max(min_t, min_t); + + for_each_point(geometry, [&] (point<T> const& point) { + if (min.x > point.x) min.x = point.x; + if (min.y > point.y) min.y = point.y; + if (max.x < point.x) max.x = point.x; + if (max.y < point.y) max.y = point.y; + }); + + return box<T>(min, max); +} + +} // namespace geometry +} // namespace mapbox |