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ShaderPlayground / deps / glm / glm / gtx / range.hpp
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1/// @ref gtx_range
2/// @file glm/gtx/range.hpp
3/// @author Joshua Moerman
4///
5/// @defgroup gtx_range GLM_GTX_range
6/// @ingroup gtx
7///
8/// Include <glm/gtx/range.hpp> to use the features of this extension.
9///
10/// Defines begin and end for vectors and matrices. Useful for range-based for loop.
11/// The range is defined over the elements, not over columns or rows (e.g. mat4 has 16 elements).
12
13#pragma once
14
15// Dependencies
16#include "../detail/setup.hpp"
17
18#ifndef GLM_ENABLE_EXPERIMENTAL
19# error "GLM: GLM_GTX_range is an experimental extension and may change in the future. Use #define GLM_ENABLE_EXPERIMENTAL before including it, if you really want to use it."
20#endif
21
22#if !GLM_HAS_RANGE_FOR
23# error "GLM_GTX_range requires C++11 suppport or 'range for'"
24#endif
25
26#include "../gtc/type_ptr.hpp"
27#include "../gtc/vec1.hpp"
28
29namespace glm
30{
31 /// @addtogroup gtx_range
32 /// @{
33
34# if GLM_COMPILER & GLM_COMPILER_VC
35# pragma warning(push)
36# pragma warning(disable : 4100) // unreferenced formal parameter
37# endif
38
39 template<typename T, qualifier Q>
40 inline length_t components(vec<1, T, Q> const& v)
41 {
42 return v.length();
43 }
44
45 template<typename T, qualifier Q>
46 inline length_t components(vec<2, T, Q> const& v)
47 {
48 return v.length();
49 }
50
51 template<typename T, qualifier Q>
52 inline length_t components(vec<3, T, Q> const& v)
53 {
54 return v.length();
55 }
56
57 template<typename T, qualifier Q>
58 inline length_t components(vec<4, T, Q> const& v)
59 {
60 return v.length();
61 }
62
63 template<typename genType>
64 inline length_t components(genType const& m)
65 {
66 return m.length() * m[0].length();
67 }
68
69 template<typename genType>
70 inline typename genType::value_type const * begin(genType const& v)
71 {
72 return value_ptr(v);
73 }
74
75 template<typename genType>
76 inline typename genType::value_type const * end(genType const& v)
77 {
78 return begin(v) + components(v);
79 }
80
81 template<typename genType>
82 inline typename genType::value_type * begin(genType& v)
83 {
84 return value_ptr(v);
85 }
86
87 template<typename genType>
88 inline typename genType::value_type * end(genType& v)
89 {
90 return begin(v) + components(v);
91 }
92
93# if GLM_COMPILER & GLM_COMPILER_VC
94# pragma warning(pop)
95# endif
96
97 /// @}
98}//namespace glm