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LibN2L-4 Library Code Reference

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cRPerspectiveProjection.cpp

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00001 /************************************************************************
00002 Nova-2 Library (libN2L, or simply n2l) Game development C++ Library
00003 Copyright (C) 2003  Aaron Cameron
00004 
00005 This library is free software; you can redistribute it and/or
00006 modify it under the terms of the GNU Lesser General Public
00007 License as published by the Free Software Foundation; either
00008 version 2.1 of the License, or (at your option) any later version.
00009 
00010 This library is distributed in the hope that it will be useful,
00011 but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 Lesser General Public License for more details.
00014 
00015 You should have received a copy of the GNU Lesser General Public
00016 License along with this library; if not, write to the Free Software
00017 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00018 
00019 A copy of the GNU Lesser General Public License has been provided with
00020 this library in the file 'COPYING'.
00021 
00022 Contact information for the author of this library has been provided
00023 with this library in the file 'AUTHOR'.
00024 ************************************************************************/
00025 
00026 #include "cRPerspectiveProjection.h"
00027 #include <GL/glu.h>
00028 
00029 #include "n2l/dynVars.h"
00030 #include "n2l/vfs.h"
00031 
00032 /******************************************************************************/
00033 namespace n2l
00034 {
00035     /**************************************************************************/
00036     cRPerspectiveProjection::cRPerspectiveProjection()
00037     {
00038         init();
00039     }
00040 
00041     /**************************************************************************/
00042     cRPerspectiveProjection::cRPerspectiveProjection(
00043         const tDouble &iFovY, const tDouble &iYAspectRatio,
00044         const tDouble &iNear, const tDouble &iFar )
00045     {
00046         init();
00047         mFovY = iFovY;
00048         mYAspectRatio = iYAspectRatio;
00049         mNear = iNear;
00050         mFar = iFar;
00051     }
00052 
00053     /**************************************************************************/
00054     cRPerspectiveProjection::cRPerspectiveProjection(
00055         const cVfsNodeInterface &iNode )
00056     {
00057         init();
00058         load(iNode);
00059     }
00060 
00061     /**************************************************************************/
00062     cRPerspectiveProjection::cRPerspectiveProjection( const cDynVar &iDef )
00063     {
00064         init();
00065         load(iDef);
00066     }
00067     
00068     /**************************************************************************/
00069     cRPerspectiveProjection::~cRPerspectiveProjection()
00070     {
00071     }
00072 
00073     /**************************************************************************/
00074     void cRPerspectiveProjection::load( const cVfsNodeInterface &iNode )
00075     {
00076         const tUint DataOffset =
00077             vfsNodeFileWithHeader( iNode, "n2l::cRPerspectiveProjection");
00078 
00079         cDynVar def;
00080         def.unserialize( iNode.buffer().c_str()+DataOffset );
00081         load( def );
00082     }
00083 
00084     /**************************************************************************/
00085     void cRPerspectiveProjection::load( const cDynVar &iDef )
00086     {
00087         mFovY = iDef.keyValueOr( "fovY", tFloat(mFovY) );
00088         mYAspectRatio = iDef.keyValueOr( "aspectY", tFloat(mYAspectRatio) );
00089         mNear = iDef.keyValueOr( "near", tFloat(mNear) );
00090         mFar = iDef.keyValueOr( "far", tFloat(mFar) );
00091     }
00092 
00093     /**************************************************************************/
00094     void cRPerspectiveProjection::render() const
00095     {
00096         gluPerspective(mFovY,mYAspectRatio,mNear,mFar);
00097     }
00098 
00099     /**************************************************************************/
00100     const tDouble &cRPerspectiveProjection::yFov() const
00101     {
00102         return mFovY;
00103     }
00104 
00105     /**************************************************************************/
00106     const tDouble &cRPerspectiveProjection::yAspectRatio() const
00107     {
00108         return mYAspectRatio;
00109     }
00110 
00111     /**************************************************************************/
00112     const tDouble &cRPerspectiveProjection::farClipDistance() const
00113     {
00114         return mFar;
00115     }
00116 
00117     /**************************************************************************/
00118     const tDouble &cRPerspectiveProjection::nearClipDistance() const
00119     {
00120         return mNear;
00121     }
00122 
00123     /**************************************************************************/
00124     cRProjectionInterface *const cRPerspectiveProjection::clone() const
00125     {
00126         return new cRPerspectiveProjection( mFovY, mYAspectRatio, mNear,mFar );
00127     }
00128 
00129     /**************************************************************************/
00130     void cRPerspectiveProjection::init()
00131     {
00132         mFovY = 50.0;
00133         mYAspectRatio = 0.75;
00134         mNear = 1.0;
00135         mFar = 1000.0;
00136     }
00137 
00138 
00139 } // namespace
©2012 Aaron Cameron