OpenMesh
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GenProg.hh
1/* ========================================================================= *
2 * *
3 * OpenMesh *
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5 * Department of Computer Graphics and Multimedia *
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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
67namespace OpenMesh {
68
69namespace GenProg {
70#ifndef DOXY_IGNORE_THIS
71
72//== IMPLEMENTATION ===========================================================
73
74
76template <bool b> struct Bool2Type { enum { my_bool = b }; };
77
79template <int i> struct Int2Type { enum { my_int = i }; };
80
82typedef Bool2Type<true> TrueType;
83
85typedef Bool2Type<false> FalseType;
86
87//-----------------------------------------------------------------------------
89template <bool Expr> struct AssertCompile;
90template <> struct AssertCompile<true> {};
91
92
93
94//--- Template "if" w/ partial specialization ---------------------------------
95#if OM_PARTIAL_SPECIALIZATION
96
97
98template <bool condition, class Then, class Else>
99struct IF { typedef Then Result; };
100
106template <class Then, class Else>
107struct IF<false, Then, Else> { typedef Else Result; };
108
109
110
111
112
113//--- Template "if" w/o partial specialization --------------------------------
114#else
115
116
117struct SelectThen
118{
119 template <class Then, class Else> struct Select {
120 typedef Then Result;
121 };
122};
123
124struct SelectElse
125{
126 template <class Then, class Else> struct Select {
127 typedef Else Result;
128 };
129};
130
131template <bool condition> struct ChooseSelector {
132 typedef SelectThen Result;
133};
134
135template <> struct ChooseSelector<false> {
136 typedef SelectElse Result;
137};
138
139
145
146template <bool condition, class Then, class Else>
147class IF
148{
149 typedef typename ChooseSelector<condition>::Result Selector;
150public:
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
Utilities for generative programming.

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