Crazy Eddie's GUI System  0.8.5
RendererModules/OpenGL/RenderTarget.h
1 /***********************************************************************
2  created: Wed, 8th Feb 2012
3  author: Lukas E Meindl (based on code by Paul D Turner)
4 *************************************************************************/
5 /***************************************************************************
6  * Copyright (C) 2004 - 2012 Paul D Turner & The CEGUI Development Team
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining
9  * a copy of this software and associated documentation files (the
10  * "Software"), to deal in the Software without restriction, including
11  * without limitation the rights to use, copy, modify, merge, publish,
12  * distribute, sublicense, and/or sell copies of the Software, and to
13  * permit persons to whom the Software is furnished to do so, subject to
14  * the following conditions:
15  *
16  * The above copyright notice and this permission notice shall be
17  * included in all copies or substantial portions of the Software.
18  *
19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25  * OTHER DEALINGS IN THE SOFTWARE.
26  ***************************************************************************/
27 #ifndef _CEGUIOpenGLRenderTarget_h_
28 #define _CEGUIOpenGLRenderTarget_h_
29 
30 #include "CEGUI/RendererModules/OpenGL/RendererBase.h"
31 #include "../../RenderTarget.h"
32 #include "../../Rect.h"
33 
34 #if defined(_MSC_VER)
35 # pragma warning(push)
36 # pragma warning(disable : 4251)
37 #endif
38 
39 namespace CEGUI
40 {
45 template <typename T = RenderTarget>
46 class OPENGL_GUIRENDERER_API OpenGLRenderTarget : public T
47 {
48 public:
51  virtual ~OpenGLRenderTarget();
52 
53  // implement parts of RenderTarget interface
54  void draw(const GeometryBuffer& buffer);
55  void draw(const RenderQueue& queue);
56  void setArea(const Rectf& area);
57  const Rectf& getArea() const;
58  void activate();
59  void deactivate();
60  void unprojectPoint(const GeometryBuffer& buff,
61  const Vector2f& p_in, Vector2f& p_out) const;
62 
63 protected:
65  virtual void updateMatrix() const;
66 
72  static const double d_yfov_tan;
74  mutable mat4Pimpl* d_matrix;
76  mutable bool d_matrixValid;
78  mutable double d_viewDistance;
79 };
80 
81 }
82 
83 #if defined(_MSC_VER)
84 # pragma warning(pop)
85 #endif
86 
87 #endif
88 
Intermediate OpenGL implementation of a RenderTarget.
Definition: RendererModules/OpenGL/RenderTarget.h:46
Main namespace for Crazy Eddie's GUI Library.
Definition: arch_overview.dox:1
Rectf d_area
holds defined area for the RenderTarget
Definition: RendererModules/OpenGL/RenderTarget.h:70
Abstract class defining the interface for objects that buffer geometry for later rendering.
Definition: GeometryBuffer.h:42
bool d_matrixValid
true if saved matrix is up to date
Definition: RendererModules/OpenGL/RenderTarget.h:76
mat4Pimpl * d_matrix
saved copy of projection matrix
Definition: RendererModules/OpenGL/RenderTarget.h:74
double d_viewDistance
tracks viewing distance (this is set up at the same time as d_matrix)
Definition: RendererModules/OpenGL/RenderTarget.h:78
OpenGLRendererBase & d_owner
OpenGLRendererBase that created this object.
Definition: RendererModules/OpenGL/RenderTarget.h:68
static const double d_yfov_tan
tangent of the y FOV half-angle; used to calculate viewing distance.
Definition: RendererModules/OpenGL/RenderTarget.h:72
Common base class used for other OpenGL (desktop or ES) based renderer modules.
Definition: RendererBase.h:53
Class that represents a queue of GeometryBuffer objects to be rendered.
Definition: RenderQueue.h:52
Definition: GlmPimpl.h:36