src/geo2d/rel/cp/lib.hpp
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|---|---|---|---|
| 1 | #pragma once | ||
| 2 | |||
| 3 | #include "../../dis/pp_p/lib.hpp" | ||
| 4 | #include "../../ds/c/lib.hpp" | ||
| 5 | |||
| 6 | namespace tifa_libs { | ||
| 7 | |||
| 8 | // relation between circle and point | ||
| 9 | // clang-format off | ||
| 10 | enum class RELCP : u8 { outside, onborder, inside }; | ||
| 11 | // clang-format on | ||
| 12 | |||
| 13 | template <class FP> | ||
| 14 | 17443336 | CEXP RELCP relation_CP(circle<FP> CR c, point<FP> CR p) NE { | |
| 15 | 17443336 | const auto _ = comp_distp(c.o, p, c.r); | |
| 16 |
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17443336 | if (_ < 0) return RELCP::inside; |
| 17 |
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21447 | if (_ == 0) return RELCP::onborder; |
| 18 | 21207 | return RELCP::outside; | |
| 19 | } | ||
| 20 | |||
| 21 | } // namespace tifa_libs | ||
| 22 |