1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2016 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////
/// \brief Helper functions to copy sf::Transform to sf::Glsl::Mat3/4
///
////////////////////////////////////////////////////////////
void SFML_GRAPHICS_API copyMatrix(const Transform& source, Matrix<3, 3>& dest);
void SFML_GRAPHICS_API copyMatrix(const Transform& source, Matrix<4, 4>& dest);
////////////////////////////////////////////////////////////
/// \brief Copy array-based matrix with given number of elements
///
/// Indirection to std::copy() to avoid inclusion of
/// <algorithm> and MSVC's annoying 4996 warning in header
///
////////////////////////////////////////////////////////////
void SFML_GRAPHICS_API copyMatrix(const float* source, std::size_t elements, float* dest);
////////////////////////////////////////////////////////////
/// \brief Helper functions to copy sf::Color to sf::Glsl::Vec4/Ivec4
///
////////////////////////////////////////////////////////////
void SFML_GRAPHICS_API copyVector(const Color& source, Vector4<float>& dest);
void SFML_GRAPHICS_API copyVector(const Color& source, Vector4<int>& dest);
////////////////////////////////////////////////////////////
/// \brief Matrix type, used to set uniforms in GLSL
///
////////////////////////////////////////////////////////////
template <std::size_t Columns, std::size_t Rows>
struct Matrix
{
////////////////////////////////////////////////////////////
/// \brief Construct from raw data
///
/// \param pointer Points to the beginning of an array that
/// has the size of the matrix. The elements
/// are copied to the instance.
///
////////////////////////////////////////////////////////////
explicit Matrix(const float* pointer)
{
copyMatrix(pointer, Columns * Rows, array);
}
////////////////////////////////////////////////////////////
/// \brief Construct implicitly from SFML transform
///
/// This constructor is only supported for 3x3 and 4x4
/// matrices.
///
/// \param transform Object containing a transform.
///
////////////////////////////////////////////////////////////
Matrix(const Transform& transform)
{
copyMatrix(transform, *this);
}
float array[Columns * Rows]; ///< Array holding matrix data
};
////////////////////////////////////////////////////////////
/// \brief 4D vector type, used to set uniforms in GLSL
///
////////////////////////////////////////////////////////////
template <typename T>
struct Vector4
{
////////////////////////////////////////////////////////////
/// \brief Default constructor, creates a zero vector
///
////////////////////////////////////////////////////////////
Vector4() :
x(0),
y(0),
z(0),
w(0)
{
}
////////////////////////////////////////////////////////////
/// \brief Construct from 4 vector components
///
/// \param X Component of the 4D vector
/// \param Y Component of the 4D vector
/// \param Z Component of the 4D vector
/// \param W Component of the 4D vector
///
////////////////////////////////////////////////////////////
Vector4(T X, T Y, T Z, T W) :
x(X),
y(Y),
z(Z),
w(W)
{
}
////////////////////////////////////////////////////////////
/// \brief Conversion constructor
///
/// \param other 4D vector of different type
///
////////////////////////////////////////////////////////////
template <typename U>
explicit Vector4(const Vector4<U>& other) :
x(static_cast<T>(other.x)),
y(static_cast<T>(other.y)),
z(static_cast<T>(other.z)),
w(static_cast<T>(other.w))
{
}
////////////////////////////////////////////////////////////
/// \brief Construct float vector implicitly from color
///
/// \param color Color instance. Is normalized to [0, 1]
/// for floats, and left as-is for ints.
///
////////////////////////////////////////////////////////////
Vector4(const Color& color)
// uninitialized
{
copyVector(color, *this);
}
T x; ///< 1st component (X) of the 4D vector
T y; ///< 2nd component (Y) of the 4D vector
T z; ///< 3rd component (Z) of the 4D vector
T w; ///< 4th component (W) of the 4D vector
};
|
