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File indexing completed on 2025-01-18 09:27:50
0001 // This file is part of the Acts project. 0002 // 0003 // Copyright (C) 2020 CERN for the benefit of the Acts project 0004 // 0005 // This Source Code Form is subject to the terms of the Mozilla Public 0006 // License, v. 2.0. If a copy of the MPL was not distributed with this 0007 // file, You can obtain one at http://mozilla.org/MPL/2.0/. 0008 0009 #pragma once 0010 0011 #include "Acts/Definitions/Algebra.hpp" 0012 #include "Acts/Utilities/Intersection.hpp" 0013 0014 #include <array> 0015 0016 namespace Acts::detail { 0017 0018 struct IntersectionHelper2D { 0019 /// Intersect two segments 0020 /// 0021 /// @param s0 The Start of the segment 0022 /// @param s1 The end of the segment 0023 /// @param origin The Start of intersection line 0024 /// @param dir The Direction of intersection line 0025 /// 0026 /// @return the intersection point with status 0027 static Intersection2D intersectSegment(const Vector2& s0, const Vector2& s1, 0028 const Vector2& origin, 0029 const Vector2& dir, 0030 bool boundCheck = false); 0031 0032 /// Intersect ellipses 0033 /// 0034 /// @param Rx The radius in x 0035 /// @param Ry The radius in y 0036 /// @param origin The Start of intersection line 0037 /// @param dir The Direction of intersection line 0038 /// 0039 /// @return the intersection points 0040 static std::array<Intersection2D, 2> intersectEllipse(ActsScalar Rx, 0041 ActsScalar Ry, 0042 const Vector2& origin, 0043 const Vector2& dir); 0044 0045 /// Intersect the circle 0046 /// 0047 /// @param R The radius 0048 /// @param origin The Start of intersection line 0049 /// @param dir The Direction of intersection line 0050 /// 0051 /// @return the intersection points 0052 static inline std::array<Intersection2D, 2> intersectCircle( 0053 ActsScalar R, const Vector2& origin, const Vector2& dir) { 0054 return intersectEllipse(R, R, origin, dir); 0055 } 0056 0057 /// Intersect a circle segment 0058 /// 0059 /// @note only forward solution is taken 0060 /// 0061 /// @param R The radius 0062 /// @param phiMin The minimum phi value 0063 /// @param phiMax The maximum phi value 0064 /// @param origin The Start of intersection line 0065 /// @param dir The Direction of intersection line 0066 /// 0067 /// @return the intersection points 0068 static Intersection2D intersectCircleSegment(ActsScalar R, ActsScalar phiMin, 0069 ActsScalar phiMax, 0070 const Vector2& origin, 0071 const Vector2& dir); 0072 0073 }; // struct IntersectionHelper2D 0074 0075 } // namespace Acts::detail
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