1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // |
---|
27 | // $Id: G4FPlane.hh,v 1.13 2006/06/29 18:39:30 gunter Exp $ |
---|
28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
---|
29 | // |
---|
30 | // ---------------------------------------------------------------------- |
---|
31 | // Class G4FPlane |
---|
32 | // |
---|
33 | // Class Description: |
---|
34 | // |
---|
35 | // A G4FPlane is a plane created by 3 points or by an origin, an axis and |
---|
36 | // a direction. The plane created is a G4Plane, where his coefficient a, b, |
---|
37 | // c and d are stored. The equation of the plane is: |
---|
38 | // ax + by + cz = d |
---|
39 | // |
---|
40 | // This class contain 2 intersection functions : |
---|
41 | // - closest intersection |
---|
42 | // - intersection by a ray |
---|
43 | |
---|
44 | // Authors: J.Sulkimo, P.Urban. |
---|
45 | // Revisions by: L.Broglia, S.Giani, G.Cosmo. |
---|
46 | // ---------------------------------------------------------------------- |
---|
47 | // |
---|
48 | // History |
---|
49 | // ------- |
---|
50 | // - SurfaceNormal always returns the direction of NormalX, always containing |
---|
51 | // the correct orientation for all faces (S.Giani). |
---|
52 | // - Addition of default argument sense = 1 in the second constructor (S.Giani). |
---|
53 | // - The constructor using iVec now properly stores both the internal and |
---|
54 | // external boundaries in the bounds vector (S.Giani). |
---|
55 | // - Proper initialization of sameSense in both the constructors (S.Giani). |
---|
56 | // - Addition of third argument (sense) in the second constructor to ensure |
---|
57 | // consistent setting of the normal in all the client code (S.Giani). |
---|
58 | // - Proper use of the tolerance in the Intersect function (S.Giani). |
---|
59 | // ---------------------------------------------------------------------- |
---|
60 | #ifndef __PLANESURFACE_H |
---|
61 | #define __PLANESURFACE_H |
---|
62 | |
---|
63 | #include "G4Axis2Placement3D.hh" |
---|
64 | #include "G4Plane.hh" |
---|
65 | #include "G4Surface.hh" |
---|
66 | |
---|
67 | |
---|
68 | class G4FPlane : public G4Surface |
---|
69 | { |
---|
70 | |
---|
71 | public: // with description |
---|
72 | |
---|
73 | G4FPlane(); |
---|
74 | virtual ~G4FPlane(); |
---|
75 | // Default constructor & destructor. |
---|
76 | |
---|
77 | G4FPlane( const G4Vector3D& direction, |
---|
78 | const G4Vector3D& axis , |
---|
79 | const G4Point3D& Pt0, |
---|
80 | G4int sense = 1 ); |
---|
81 | // Normal constructor. |
---|
82 | |
---|
83 | G4FPlane(const G4Point3DVector* pVec, |
---|
84 | const G4Point3DVector* iVec= 0, |
---|
85 | G4int sense = 1); |
---|
86 | // Constructor used by G4BREPSolidBox and G4BREPSolidPolyhedra. |
---|
87 | |
---|
88 | G4int Intersect(const G4Ray& G4Rayref); |
---|
89 | // Calculates the intersection of the plane and a ray. |
---|
90 | |
---|
91 | void CalcBBox(); |
---|
92 | // Calculates bounding box. |
---|
93 | |
---|
94 | void Project(); |
---|
95 | // Computes the projection of the plane. |
---|
96 | |
---|
97 | inline G4int GetConvex() const; |
---|
98 | // Return plane's convexity, if so. |
---|
99 | |
---|
100 | inline G4int GetNumberOfPoints() const; |
---|
101 | // Gets the number of the points on the surface boundary. |
---|
102 | |
---|
103 | inline G4Point3D GetSrfPoint() const; |
---|
104 | // Gets the location point on the surface. |
---|
105 | |
---|
106 | inline const G4Point3D& GetPoint(G4int Count) const; |
---|
107 | // Gets a surface boundary point. |
---|
108 | |
---|
109 | void CalcNormal(); |
---|
110 | // Computes normal to surface. |
---|
111 | |
---|
112 | inline G4Vector3D SurfaceNormal(const G4Point3D& Pt) const; |
---|
113 | // Returns normal to surface. |
---|
114 | |
---|
115 | inline const char* Name() const; |
---|
116 | // Returns the type identifier. |
---|
117 | |
---|
118 | G4double ClosestDistanceToPoint(const G4Point3D& Pt); |
---|
119 | // Returns the closest distance from point Pt. |
---|
120 | |
---|
121 | G4double HowNear( const G4Vector3D& x ) const ; |
---|
122 | // Computes the shortest distance from the point x to the G4FPlane. |
---|
123 | // The distance will always be positive. |
---|
124 | |
---|
125 | inline G4Axis2Placement3D GetPplace() const; |
---|
126 | inline G4Plane GetPplane() const; |
---|
127 | // Accessors to geometrical data. |
---|
128 | |
---|
129 | public: // without description |
---|
130 | |
---|
131 | inline G4int MyType() const; |
---|
132 | // Returns the shape type (used in G4BREPSolid). |
---|
133 | |
---|
134 | G4int IsConvex() const; |
---|
135 | // Returns -1. (?) |
---|
136 | |
---|
137 | inline void Deactivate(); |
---|
138 | // Deactive, used in G4Surface. |
---|
139 | |
---|
140 | inline G4Ray* Norm(); |
---|
141 | // Returns the normal (used in BREPSolid). |
---|
142 | |
---|
143 | inline const G4Point3D& GetHitPoint() const; |
---|
144 | // Returns the hit point of the ray on the surface. |
---|
145 | |
---|
146 | protected: |
---|
147 | |
---|
148 | void InitBounded(); |
---|
149 | |
---|
150 | protected: |
---|
151 | |
---|
152 | G4Point3D hitpoint; |
---|
153 | // Hit point of the ray on the surface. |
---|
154 | |
---|
155 | private: |
---|
156 | |
---|
157 | G4FPlane(const G4FPlane&); |
---|
158 | G4FPlane& operator=(const G4FPlane&); |
---|
159 | // Private copy constructor and assignment operator. |
---|
160 | |
---|
161 | inline G4int Sign(G4double a) const; |
---|
162 | |
---|
163 | private: |
---|
164 | |
---|
165 | G4Axis2Placement3D pplace; |
---|
166 | G4Plane Pl; |
---|
167 | G4Ray* NormalX; |
---|
168 | G4int Convex; |
---|
169 | G4SurfaceBoundary* projectedBoundary; |
---|
170 | |
---|
171 | }; |
---|
172 | |
---|
173 | #include "G4FPlane.icc" |
---|
174 | |
---|
175 | #endif |
---|