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
|
////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2015 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.
//
////////////////////////////////////////////////////////////
#ifndef SFML_DRAWABLE_HPP
#define SFML_DRAWABLE_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Graphics/Export.hpp>
#include <SFML/Graphics/RenderStates.hpp>
namespace sf
{
class RenderTarget;
////////////////////////////////////////////////////////////
/// \brief Abstract base class for objects that can be drawn
/// to a render target
///
////////////////////////////////////////////////////////////
class SFML_GRAPHICS_API Drawable
{
public:
////////////////////////////////////////////////////////////
/// \brief Virtual destructor
///
////////////////////////////////////////////////////////////
virtual ~Drawable() {}
protected:
friend class RenderTarget;
////////////////////////////////////////////////////////////
/// \brief Draw the object to a render target
///
/// This is a pure virtual function that has to be implemented
/// by the derived class to define how the drawable should be
/// drawn.
///
/// \param target Render target to draw to
/// \param states Current render states
///
////////////////////////////////////////////////////////////
virtual void draw(RenderTarget& target, RenderStates states) const = 0;
};
} // namespace sf
#endif // SFML_DRAWABLE_HPP
////////////////////////////////////////////////////////////
/// \class sf::Drawable
/// \ingroup graphics
///
/// sf::Drawable is a very simple base class that allows objects
/// of derived classes to be drawn to a sf::RenderTarget.
///
/// All you have to do in your derived class is to override the
/// draw virtual function.
///
/// Note that inheriting from sf::Drawable is not mandatory,
/// but it allows this nice syntax "window.draw(object)" rather
/// than "object.draw(window)", which is more consistent with other
/// SFML classes.
///
/// Example:
/// \code
/// class MyDrawable : public sf::Drawable
/// {
/// public:
///
/// ...
///
/// private:
///
/// virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const
/// {
/// // You can draw other high-level objects
/// target.draw(m_sprite, states);
///
/// // ... or use the low-level API
/// states.texture = &m_texture;
/// target.draw(m_vertices, states);
///
/// // ... or draw with OpenGL directly
/// glBegin(GL_QUADS);
/// ...
/// glEnd();
/// }
///
/// sf::Sprite m_sprite;
/// sf::Texture m_texture;
/// sf::VertexArray m_vertices;
/// };
/// \endcode
///
/// \see sf::RenderTarget
///
////////////////////////////////////////////////////////////
|
