OpenMesh
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Modules Pages
GenProg.hh
1 /* ========================================================================= *
2  * *
3  * OpenMesh *
4  * Copyright (c) 2001-2015, RWTH-Aachen University *
5  * Department of Computer Graphics and Multimedia *
6  * All rights reserved. *
7  * www.openmesh.org *
8  * *
9  *---------------------------------------------------------------------------*
10  * This file is part of OpenMesh. *
11  *---------------------------------------------------------------------------*
12  * *
13  * Redistribution and use in source and binary forms, with or without *
14  * modification, are permitted provided that the following conditions *
15  * are met: *
16  * *
17  * 1. Redistributions of source code must retain the above copyright notice, *
18  * this list of conditions and the following disclaimer. *
19  * *
20  * 2. Redistributions in binary form must reproduce the above copyright *
21  * notice, this list of conditions and the following disclaimer in the *
22  * documentation and/or other materials provided with the distribution. *
23  * *
24  * 3. Neither the name of the copyright holder nor the names of its *
25  * contributors may be used to endorse or promote products derived from *
26  * this software without specific prior written permission. *
27  * *
28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
31  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
32  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
33  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
34  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
35  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
36  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
37  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
38  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
39  * *
40  * ========================================================================= */
41 
42 /*===========================================================================*\
43  * *
44  * $Revision$ *
45  * $Date$ *
46  * *
47 \*===========================================================================*/
48 
49 
50 //=============================================================================
51 //
52 // Utils for generic/generative programming
53 //
54 //=============================================================================
55 
56 #ifndef OPENMESH_GENPROG_HH
57 #define OPENMESH_GENPROG_HH
58 
59 
60 //== INCLUDES =================================================================
61 
62 #include <OpenMesh/Core/System/config.h>
63 
64 
65 //== NAMESPACES ===============================================================
66 
67 namespace OpenMesh {
68 
69 namespace GenProg {
70 #ifndef DOXY_IGNORE_THIS
71 
72 //== IMPLEMENTATION ===========================================================
73 
74 
76 template <bool b> struct Bool2Type { enum { my_bool = b }; };
77 
79 template <int i> struct Int2Type { enum { my_int = i }; };
80 
82 typedef Bool2Type<true> TrueType;
83 
85 typedef Bool2Type<false> FalseType;
86 
87 //-----------------------------------------------------------------------------
89 template <bool Expr> struct AssertCompile;
90 template <> struct AssertCompile<true> {};
91 
92 
93 
94 //--- Template "if" w/ partial specialization ---------------------------------
95 #if OM_PARTIAL_SPECIALIZATION
96 
97 
98 template <bool condition, class Then, class Else>
99 struct IF { typedef Then Result; };
100 
106 template <class Then, class Else>
107 struct IF<false, Then, Else> { typedef Else Result; };
108 
109 
110 
111 
112 
113 //--- Template "if" w/o partial specialization --------------------------------
114 #else
115 
116 
117 struct SelectThen
118 {
119  template <class Then, class Else> struct Select {
120  typedef Then Result;
121  };
122 };
123 
124 struct SelectElse
125 {
126  template <class Then, class Else> struct Select {
127  typedef Else Result;
128  };
129 };
130 
131 template <bool condition> struct ChooseSelector {
132  typedef SelectThen Result;
133 };
134 
135 template <> struct ChooseSelector<false> {
136  typedef SelectElse Result;
137 };
138 
139 
146 template <bool condition, class Then, class Else>
147 class IF
148 {
149  typedef typename ChooseSelector<condition>::Result Selector;
150 public:
151  typedef typename Selector::template Select<Then, Else>::Result Result;
152 };
153 
154 #endif
155 
156 //=============================================================================
157 #endif
158 } // namespace GenProg
159 } // namespace OpenMesh
160 
161 #define assert_compile(EXPR) GenProg::AssertCompile<(EXPR)>();
162 
163 //=============================================================================
164 #endif // OPENMESH_GENPROG_HH defined
165 //=============================================================================
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:64

Project OpenMesh, ©  Computer Graphics Group, RWTH Aachen. Documentation generated using doxygen .