| OpenMesh

vector_cast.hh
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41
42
43
44
45 //=============================================================================
46 //
47 // Helper Functions for binary reading / writing
48 //
49 //=============================================================================
50
51
52 #ifndef OPENMESH_VECTORCAST_HH
53 #define OPENMESH_VECTORCAST_HH
54
55
56 //== INCLUDES =================================================================
57
58
59 #include <OpenMesh/Core/System/config.h>
60 #include <OpenMesh/Core/Utils/vector_traits.hh>
61 #include <OpenMesh/Core/Utils/GenProg.hh>
62 #include <OpenMesh/Core/Geometry/VectorT.hh>
63
64
65 //== NAMESPACES ===============================================================
66
67
68 namespace OpenMesh {
69
70
71 //=============================================================================
72
73
77
78 //-----------------------------------------------------------------------------
79
80 template <typename src_t, typename dst_t, int n>
81 inline void vector_cast( const src_t &_src, dst_t &_dst, GenProg::Int2Type<n> )
82 {
83 assert_compile(vector_traits<dst_t>::size_ <= vector_traits<src_t>::size_)
84 vector_cast(_src,_dst, GenProg::Int2Type<n-1>());
85 _dst[n-1] = static_cast<typename vector_traits<dst_t>::value_type >(_src[n-1]);
86 }
87
88 template <typename src_t, typename dst_t>
89 inline void vector_cast( const src_t & /*_src*/, dst_t & /*_dst*/, GenProg::Int2Type<0> )
90 {
91 }
92
93 template <typename src_t, typename dst_t, int n>
94 inline void vector_copy( const src_t &_src, dst_t &_dst, GenProg::Int2Type<n> )
95 {
96 assert_compile(vector_traits<dst_t>::size_ <= vector_traits<src_t>::size_)
97 vector_copy(_src,_dst, GenProg::Int2Type<n-1>());
98 _dst[n-1] = _src[n-1];
99 }
100
101 template <typename src_t, typename dst_t>
102 inline void vector_copy( const src_t & /*_src*/, dst_t & /*_dst*/ , GenProg::Int2Type<0> )
103 {
104 }
105
106
107
108 //-----------------------------------------------------------------------------
109 #ifndef DOXY_IGNORE_THIS
110
111 template <typename dst_t, typename src_t>
112 struct vector_caster
113 {
114 typedef dst_t return_type;
115
116 inline static return_type cast(const src_t& _src)
117 {
118 dst_t dst;
119 vector_cast(_src, dst, GenProg::Int2Type<vector_traits<dst_t>::size_>());
120 return dst;
121 }
122 };
123
124 #if !defined(OM_CC_MSVC)
125 template <typename dst_t>
126 struct vector_caster<dst_t,dst_t>
127 {
128 typedef const dst_t& return_type;
129
130 inline static return_type cast(const dst_t& _src)
131 {
132 return _src;
133 }
134 };
135 #endif
136
137 #endif
138 //-----------------------------------------------------------------------------
139
140
142 template <typename dst_t, typename src_t>
143 inline
144 typename vector_caster<dst_t, src_t>::return_type
145 vector_cast(const src_t& _src )
146 {
147 return vector_caster<dst_t, src_t>::cast(_src);
148 }
149
150
152
153
154 //=============================================================================
155 } // namespace OpenMesh
156 //=============================================================================
157 #endif // OPENMESH_MESHREADER_HH defined
158 //=============================================================================
OpenMesh::vector_copy
void vector_copy(const src_t &_src, dst_t &_dst, GenProg::Int2Type< n >)
Cast vector type to another vector type by copying the vector elements.
Definition: vector_cast.hh:94
OpenMesh
Contains all the mesh ingredients like the polygonal mesh, the triangle mesh, different mesh kernels ...
Definition: MeshItems.hh:59
OpenMesh::vector_traits
Helper class providing information about a vector type.
Definition: vector_traits.hh:88
OpenMesh::vector_cast
void vector_cast(const src_t &_src, dst_t &_dst, GenProg::Int2Type< n >)
Cast vector type to another vector type by copying the vector elements.
Definition: vector_cast.hh:81
OpenMesh::vector_traits::value_type
T::value_type value_type
Type of the scalar value.
Definition: vector_traits.hh:94