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1 | // Created on: 1993-09-23 |
2 | // Created by: Didier PIFFAULT |
3 | // Copyright (c) 1993-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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8 | // This library is free software; you can redistribute it and/or modify it under |
9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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10 | // by the Free Software Foundation, with special exception defined in the file |
11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
12 | // distribution for complete text of the license and disclaimer of any warranty. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
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16 | |
17 | #ifndef _BRepMesh_Triangle_HeaderFile |
18 | #define _BRepMesh_Triangle_HeaderFile |
19 | |
20 | #include <Standard.hxx> |
21 | #include <Standard_DefineAlloc.hxx> |
22 | #include <Standard_Macro.hxx> |
23 | |
24 | #include <BRepMesh_DegreeOfFreedom.hxx> |
25 | |
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26 | |
27 | //! Light weighted structure representing triangle |
28 | //! of mesh consisting of oriented links. |
29 | class BRepMesh_Triangle |
30 | { |
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31 | public: |
32 | |
33 | DEFINE_STANDARD_ALLOC |
34 | |
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35 | //! Default constructor. |
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36 | BRepMesh_Triangle() |
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37 | : myEdge1(0), |
38 | myEdge2(0), |
39 | myEdge3(0), |
40 | myOrientation1(Standard_False), |
41 | myOrientation2(Standard_False), |
42 | myOrientation3(Standard_False), |
43 | myMovability (BRepMesh_Free) |
44 | { |
45 | } |
46 | |
47 | //! Constructor. |
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48 | //! @param theEdges array of edges of triangle. |
49 | //! @param theOrientations array of edge's orientations. |
50 | //! @param theMovability movability of triangle. |
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51 | BRepMesh_Triangle( |
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52 | const Standard_Integer (&theEdges)[3], |
53 | const Standard_Boolean (&theOrientations)[3], |
54 | const BRepMesh_DegreeOfFreedom theMovability) |
55 | { |
56 | Initialize(theEdges, theOrientations, theMovability); |
57 | } |
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58 | |
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59 | //! Initializes the triangle by the given parameters. |
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60 | //! @param theEdges array of edges of triangle. |
61 | //! @param theOrientations array of edge's orientations. |
62 | //! @param theMovability movability of triangle. |
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63 | inline void Initialize( |
64 | const Standard_Integer (&theEdges)[3], |
65 | const Standard_Boolean (&theOrientations)[3], |
66 | const BRepMesh_DegreeOfFreedom theMovability) |
67 | { |
68 | myEdge1 = theEdges[0]; |
69 | myEdge2 = theEdges[1]; |
70 | myEdge3 = theEdges[2]; |
71 | myOrientation1 = theOrientations[0]; |
72 | myOrientation2 = theOrientations[1]; |
73 | myOrientation3 = theOrientations[2]; |
74 | myMovability = theMovability; |
75 | } |
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76 | |
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77 | //! Gets edges with orientations composing the triangle. |
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78 | //! @param[out] theEdges array edges are stored to. |
79 | //! @param[out] theOrientations array orientations are stored to. |
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80 | inline void Edges(Standard_Integer (&theEdges)[3], |
81 | Standard_Boolean (&theOrientations)[3]) const |
82 | { |
83 | theEdges[0] = myEdge1; |
84 | theEdges[1] = myEdge2; |
85 | theEdges[2] = myEdge3; |
86 | theOrientations[0] = myOrientation1; |
87 | theOrientations[1] = myOrientation2; |
88 | theOrientations[2] = myOrientation3; |
89 | } |
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90 | |
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91 | //! Returns movability of the triangle. |
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92 | inline BRepMesh_DegreeOfFreedom Movability() const |
93 | { |
94 | return myMovability; |
95 | } |
96 | |
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97 | //! Sets movability of the triangle. |
98 | inline void SetMovability(const BRepMesh_DegreeOfFreedom theMovability) |
99 | { |
100 | myMovability = theMovability; |
101 | } |
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102 | |
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103 | //! Returns hash code for this triangle. |
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104 | //! @param theUpper upper index in the container. |
105 | //! @return hash code. |
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106 | Standard_Integer HashCode(const Standard_Integer theUpper) const |
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107 | { |
108 | return ::HashCode(myEdge1 + myEdge2 + myEdge3, theUpper); |
109 | } |
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110 | |
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111 | //! Checks for equality with another triangle. |
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112 | //! @param theOther triangle to be checked against this one. |
113 | //! @return TRUE if equal, FALSE if not. |
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114 | Standard_Boolean IsEqual(const BRepMesh_Triangle& theOther) const |
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115 | { |
116 | if (myMovability == BRepMesh_Deleted || theOther.myMovability == BRepMesh_Deleted) |
117 | return Standard_False; |
118 | |
119 | if (myEdge1 == theOther.myEdge1 && |
120 | myEdge2 == theOther.myEdge2 && |
121 | myEdge3 == theOther.myEdge3) |
122 | { |
123 | return Standard_True; |
124 | } |
125 | |
126 | if (myEdge1 == theOther.myEdge2 && |
127 | myEdge2 == theOther.myEdge3 && |
128 | myEdge3 == theOther.myEdge1) |
129 | { |
130 | return Standard_True; |
131 | } |
132 | |
133 | if (myEdge1 == theOther.myEdge3 && |
134 | myEdge2 == theOther.myEdge1 && |
135 | myEdge3 == theOther.myEdge2) |
136 | { |
137 | return Standard_True; |
138 | } |
139 | |
140 | return Standard_False; |
141 | } |
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142 | |
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143 | //! Alias for IsEqual. |
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144 | Standard_Boolean operator ==(const BRepMesh_Triangle& theOther) const |
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145 | { |
146 | return IsEqual(theOther); |
147 | } |
148 | |
149 | private: |
150 | |
151 | Standard_Integer myEdge1; |
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152 | Standard_Integer myEdge2; |
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153 | Standard_Integer myEdge3; |
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154 | Standard_Boolean myOrientation1; |
155 | Standard_Boolean myOrientation2; |
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156 | Standard_Boolean myOrientation3; |
157 | BRepMesh_DegreeOfFreedom myMovability; |
158 | }; |
159 | |
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160 | inline Standard_Integer HashCode(const BRepMesh_Triangle& theTriangle, |
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161 | const Standard_Integer theUpper) |
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162 | { |
163 | return theTriangle.HashCode(theUpper); |
164 | } |
165 | |
166 | #endif |