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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>SFML - Simple and Fast Multimedia Library</title>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<link href="tabs.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="logo">
<img src="./logo.jpg" width="770" height="200" title="SFML home" alt="SFML logo" />
</div>
<!-- Generated by Doxygen 1.5.8 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="index.htm"><span>Main Page</span></a></li>
<li><a href="namespaces.htm"><span>Namespaces</span></a></li>
<li><a href="annotated.htm"><span>Classes</span></a></li>
<li class="current"><a href="files.htm"><span>Files</span></a></li>
</ul>
</div>
<div class="tabs">
<ul>
<li><a href="files.htm"><span>File List</span></a></li>
</ul>
</div>
<h1>RenderTarget.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// SFML - Simple and Fast Multimedia Library</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This software is provided 'as-is', without any express or implied warranty.</span>
<a name="l00007"></a>00007 <span class="comment">// In no event will the authors be held liable for any damages arising from the use of this software.</span>
<a name="l00008"></a>00008 <span class="comment">//</span>
<a name="l00009"></a>00009 <span class="comment">// Permission is granted to anyone to use this software for any purpose,</span>
<a name="l00010"></a>00010 <span class="comment">// including commercial applications, and to alter it and redistribute it freely,</span>
<a name="l00011"></a>00011 <span class="comment">// subject to the following restrictions:</span>
<a name="l00012"></a>00012 <span class="comment">//</span>
<a name="l00013"></a>00013 <span class="comment">// 1. The origin of this software must not be misrepresented;</span>
<a name="l00014"></a>00014 <span class="comment">// you must not claim that you wrote the original software.</span>
<a name="l00015"></a>00015 <span class="comment">// If you use this software in a product, an acknowledgment</span>
<a name="l00016"></a>00016 <span class="comment">// in the product documentation would be appreciated but is not required.</span>
<a name="l00017"></a>00017 <span class="comment">//</span>
<a name="l00018"></a>00018 <span class="comment">// 2. Altered source versions must be plainly marked as such,</span>
<a name="l00019"></a>00019 <span class="comment">// and must not be misrepresented as being the original software.</span>
<a name="l00020"></a>00020 <span class="comment">//</span>
<a name="l00021"></a>00021 <span class="comment">// 3. This notice may not be removed or altered from any source distribution.</span>
<a name="l00022"></a>00022 <span class="comment">//</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment">// Headers</span>
<a name="l00028"></a>00028 <span class="comment"></span><span class="preprocessor">#include <SFML/Graphics/RenderTarget.hpp></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <SFML/Graphics/Drawable.hpp></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <SFML/Graphics/GraphicsContext.hpp></span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <iostream></span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="keyword">namespace </span>sf
<a name="l00035"></a>00035 {
<a name="l00039"></a><a class="code" href="classsf_1_1RenderTarget.htm#2997c96cbd93cb8ce0aba2ddae35b86f">00039</a> <a class="code" href="classsf_1_1RenderTarget.htm#2997c96cbd93cb8ce0aba2ddae35b86f" title="Default constructor.">RenderTarget::RenderTarget</a>() :
<a name="l00040"></a>00040 myCurrentView (&myDefaultView),
<a name="l00041"></a>00041 myPreserveStates(false),
<a name="l00042"></a>00042 myIsDrawing (false)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a>00047
<a name="l00051"></a><a class="code" href="classsf_1_1RenderTarget.htm#45414a2f09b257db7e7b37861d70c5a0">00051</a> <a class="code" href="classsf_1_1RenderTarget.htm#45414a2f09b257db7e7b37861d70c5a0" title="Destructor.">RenderTarget::~RenderTarget</a>()
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="comment">// Nothing to do</span>
<a name="l00054"></a>00054 }
<a name="l00055"></a>00055
<a name="l00056"></a>00056
<a name="l00060"></a><a class="code" href="classsf_1_1RenderTarget.htm#125645088d7b2df07599ea36fbb8b87e">00060</a> <span class="keywordtype">void</span> <a class="code" href="classsf_1_1RenderTarget.htm#125645088d7b2df07599ea36fbb8b87e" title="Clear the entire target with a single color.">RenderTarget::Clear</a>(<span class="keyword">const</span> <a class="code" href="classsf_1_1Color.htm" title="Color is an utility class for manipulating 32-bits RGBA colors.">Color</a>& FillColor)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (Activate(<span class="keyword">true</span>))
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 <span class="comment">// Clear the frame buffer</span>
<a name="l00065"></a>00065 GLCheck(glClearColor(FillColor.<a class="code" href="classsf_1_1Color.htm#6a5256ca24a4f9f0e0808f6fc23e01e1" title="Red component.">r</a> / 255.f, FillColor.<a class="code" href="classsf_1_1Color.htm#591daf9c3c55dea830c76c962d6ba1a5" title="Green component.">g</a> / 255.f, FillColor.<a class="code" href="classsf_1_1Color.htm#6707aedd0609c8920e12df5d7abc53cb" title="Blue component.">b</a> / 255.f, FillColor.<a class="code" href="classsf_1_1Color.htm#56dbdb47d5f040d9b78ac6a0b8b3a831" title="Alpha (transparency) component.">a</a> / 255.f));
<a name="l00066"></a>00066 GLCheck(glClear(GL_COLOR_BUFFER_BIT));
<a name="l00067"></a>00067
<a name="l00068"></a>00068 Activate(<span class="keyword">false</span>);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072
<a name="l00076"></a><a class="code" href="classsf_1_1RenderTarget.htm#18678bb6afe22b7462e2cf08f701d2ff">00076</a> <span class="keywordtype">void</span> <a class="code" href="classsf_1_1RenderTarget.htm#18678bb6afe22b7462e2cf08f701d2ff" title="Draw something into the target.">RenderTarget::Draw</a>(<span class="keyword">const</span> <a class="code" href="classsf_1_1Drawable.htm" title="Abstract base class for every object that can be drawn into a render window.">Drawable</a>& Object)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078 <span class="comment">// Check whether we are called from the outside or from a previous call to Draw</span>
<a name="l00079"></a>00079 <span class="keywordflow">if</span> (!myIsDrawing)
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 myIsDrawing = <span class="keyword">true</span>;
<a name="l00082"></a>00082
<a name="l00083"></a>00083 <span class="comment">// Set our target as the current target for rendering</span>
<a name="l00084"></a>00084 <span class="keywordflow">if</span> (Activate(<span class="keyword">true</span>))
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="comment">// Save the current render states and set the SFML ones</span>
<a name="l00087"></a>00087 <span class="keywordflow">if</span> (myPreserveStates)
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 GLCheck(glMatrixMode(GL_MODELVIEW)); GLCheck(glPushMatrix());
<a name="l00090"></a>00090 GLCheck(glMatrixMode(GL_PROJECTION)); GLCheck(glPushMatrix());
<a name="l00091"></a>00091 GLCheck(glPushAttrib(GL_COLOR_BUFFER_BIT | GL_CURRENT_BIT | GL_ENABLE_BIT |
<a name="l00092"></a>00092 GL_TEXTURE_BIT | GL_TRANSFORM_BIT | GL_VIEWPORT_BIT));
<a name="l00093"></a>00093 SetRenderStates();
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// Set the window viewport and transform matrices</span>
<a name="l00097"></a>00097 GLCheck(glViewport(0, 0, <a class="code" href="classsf_1_1RenderTarget.htm#4df749ecfddb5355d8357afe719cf681" title="Get the width of the rendering region of the target.">GetWidth</a>(), <a class="code" href="classsf_1_1RenderTarget.htm#9495774c371e0dd9ad9835ad2f34a03a" title="Get the height of the rendering region of the target.">GetHeight</a>()));
<a name="l00098"></a>00098 GLCheck(glMatrixMode(GL_PROJECTION)); GLCheck(glLoadMatrixf(myCurrentView-><a class="code" href="classsf_1_1View.htm#98df64926582a286cad8600e432e4db1" title="Get the projection matrix of the view.">GetMatrix</a>().<a class="code" href="classsf_1_1Matrix3.htm#ff23cbd3d056d404a566a62dea4c98c1" title="Return the elements of the matrix as a 4x4, in an array of 16 floats.">Get4x4Elements</a>()));
<a name="l00099"></a>00099 GLCheck(glMatrixMode(GL_MODELVIEW)); GLCheck(glLoadIdentity());
<a name="l00100"></a>00100
<a name="l00101"></a>00101 <span class="comment">// Let the object draw itself</span>
<a name="l00102"></a>00102 Object.<a class="code" href="classsf_1_1Drawable.htm#849c20578156747914d17d25c2c62682" title="Draw the object into the specified window.">Draw</a>(*<span class="keyword">this</span>);
<a name="l00103"></a>00103
<a name="l00104"></a>00104 <span class="comment">// Restore render states</span>
<a name="l00105"></a>00105 <span class="keywordflow">if</span> (myPreserveStates)
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 GLCheck(glMatrixMode(GL_PROJECTION)); GLCheck(glPopMatrix());
<a name="l00108"></a>00108 GLCheck(glMatrixMode(GL_MODELVIEW)); GLCheck(glPopMatrix());
<a name="l00109"></a>00109 GLCheck(glPopAttrib());
<a name="l00110"></a>00110 }
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="comment">// Deactivate rendering on this target</span>
<a name="l00113"></a>00113 Activate(<span class="keyword">false</span>);
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 myIsDrawing = <span class="keyword">false</span>;
<a name="l00117"></a>00117 }
<a name="l00118"></a>00118 <span class="keywordflow">else</span>
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 <span class="comment">// We are already called from a previous Draw : we don't need to set the states again, just draw the object</span>
<a name="l00121"></a>00121 Object.<a class="code" href="classsf_1_1Drawable.htm#849c20578156747914d17d25c2c62682" title="Draw the object into the specified window.">Draw</a>(*<span class="keyword">this</span>);
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 }
<a name="l00124"></a>00124
<a name="l00125"></a>00125
<a name="l00129"></a><a class="code" href="classsf_1_1RenderTarget.htm#7060ca19e685d8d5b7c6f5dd9b5906e1">00129</a> <span class="keywordtype">void</span> <a class="code" href="classsf_1_1RenderTarget.htm#7060ca19e685d8d5b7c6f5dd9b5906e1" title="Change the current active view.">RenderTarget::SetView</a>(<span class="keyword">const</span> <a class="code" href="classsf_1_1View.htm" title="This class defines a view (position, size, etc.">View</a>& NewView)
<a name="l00130"></a>00130 {
<a name="l00131"></a>00131 myCurrentView = &NewView;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a>00134
<a name="l00138"></a><a class="code" href="classsf_1_1RenderTarget.htm#d426b7ba51cc6970fb828a2bef020274">00138</a> <span class="keyword">const</span> <a class="code" href="classsf_1_1View.htm" title="This class defines a view (position, size, etc.">View</a>& <a class="code" href="classsf_1_1RenderTarget.htm#d426b7ba51cc6970fb828a2bef020274" title="Get the current view.">RenderTarget::GetView</a>()<span class="keyword"> const</span>
<a name="l00139"></a>00139 <span class="keyword"></span>{
<a name="l00140"></a>00140 <span class="keywordflow">return</span> *myCurrentView;
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143
<a name="l00147"></a><a class="code" href="classsf_1_1RenderTarget.htm#16db9179a7f035c59b8ecdd10cc2e699">00147</a> <a class="code" href="classsf_1_1View.htm" title="This class defines a view (position, size, etc.">View</a>& <a class="code" href="classsf_1_1RenderTarget.htm#16db9179a7f035c59b8ecdd10cc2e699" title="Get the default view of the window for read / write.">RenderTarget::GetDefaultView</a>()
<a name="l00148"></a>00148 {
<a name="l00149"></a>00149 <span class="keywordflow">return</span> myDefaultView;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151
<a name="l00152"></a>00152
<a name="l00161"></a><a class="code" href="classsf_1_1RenderTarget.htm#b763d16f00166b516fead600d8824c71">00161</a> <span class="keywordtype">void</span> <a class="code" href="classsf_1_1RenderTarget.htm#b763d16f00166b516fead600d8824c71" title="Tell SFML to preserve external OpenGL states, at the expense of more CPU charge.">RenderTarget::PreserveOpenGLStates</a>(<span class="keywordtype">bool</span> Preserve)
<a name="l00162"></a>00162 {
<a name="l00163"></a>00163 myPreserveStates = Preserve;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00166"></a>00166
<a name="l00170"></a><a class="code" href="classsf_1_1RenderTarget.htm#3d9265548b6903ab7f645d12177bba24">00170</a> <span class="keywordtype">void</span> <a class="code" href="classsf_1_1RenderTarget.htm#3d9265548b6903ab7f645d12177bba24" title="Called by the derived class when it&#39;s ready to be initialized.">RenderTarget::Initialize</a>()
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="comment">// Set the default rendering states</span>
<a name="l00173"></a>00173 SetRenderStates();
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="comment">// Setup the default view</span>
<a name="l00176"></a>00176 myDefaultView.<a class="code" href="classsf_1_1View.htm#a5c2ac8985a573632f9a1e95d56cc2ee" title="Rebuild the view from a rectangle.">SetFromRect</a>(<a class="code" href="classsf_1_1Rect.htm">FloatRect</a>(0, 0, static_cast<float>(<a class="code" href="classsf_1_1RenderTarget.htm#4df749ecfddb5355d8357afe719cf681" title="Get the width of the rendering region of the target.">GetWidth</a>()), static_cast<float>(<a class="code" href="classsf_1_1RenderTarget.htm#9495774c371e0dd9ad9835ad2f34a03a" title="Get the height of the rendering region of the target.">GetHeight</a>())));
<a name="l00177"></a>00177 <a class="code" href="classsf_1_1RenderTarget.htm#7060ca19e685d8d5b7c6f5dd9b5906e1" title="Change the current active view.">SetView</a>(myDefaultView);
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180
<a name="l00184"></a>00184 <span class="keywordtype">void</span> RenderTarget::SetRenderStates()
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 GLCheck(glDisable(GL_ALPHA_TEST));
<a name="l00187"></a>00187 GLCheck(glDisable(GL_DEPTH_TEST));
<a name="l00188"></a>00188 GLCheck(glDisable(GL_LIGHTING));
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190
<a name="l00191"></a>00191 } <span class="comment">// namespace sf</span>
</pre></div></div>
<p id="footer">
:: Copyright © 2007-2008 Laurent Gomila, all rights reserved ::
Documentation generated by <a href="http://www.doxygen.org/" title="doxygen website">doxygen 1.5.2</a> ::
</p>
</body>
</html>
|
