SurfaceProjection.h

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/*************** <auto-copyright.pl BEGIN do not edit this line> **************
 *
 * VR Juggler is (C) Copyright 1998-2005 by Iowa State University
 *
 * Original Authors:
 *   Allen Bierbaum, Christopher Just,
 *   Patrick Hartling, Kevin Meinert,
 *   Carolina Cruz-Neira, Albert Baker
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * -----------------------------------------------------------------
 * File:          $RCSfile$
 * Date modified: $Date: 2006-12-18 17:22:08 -0600 (Mon, 18 Dec 2006) $
 * Version:       $Revision: 19701 $
 * -----------------------------------------------------------------
 *
 *************** <auto-copyright.pl END do not edit this line> ***************/

#ifndef _VRJ_WALL_PROJECTION_H_
#define _VRJ_WALL_PROJECTION_H_

#include <vrj/vrjConfig.h>
#include <vrj/Display/Projection.h>
#include <gmtl/MatrixOps.h>
#include <gmtl/Point.h>

namespace vrj
{

class Matrix;

class SurfaceProjection : public Projection
{
public:
   SurfaceProjection(const gmtl::Point3f& llCorner,
                     const gmtl::Point3f& lrCorner,
                     const gmtl::Point3f& urCorner,
                     const gmtl::Point3f& ulCorner)
      : mLLCorner(llCorner)
      , mLRCorner(lrCorner)
      , mURCorner(urCorner)
      , mULCorner(ulCorner)
   {
      /* Do nothing. */ ;
   }

   void validateCorners();

   virtual void config(jccl::ConfigElementPtr element);

   virtual void calcViewMatrix(const gmtl::Matrix44f& eyePos,
                               const float scaleFactor);

   virtual void calcViewFrustum(const gmtl::Matrix44f& eyePos,
                                const float scaleFactor);

   std::ostream& outStream(std::ostream& out,
                           const unsigned int indentLevel = 0);

protected:
   void calculateOffsets();
   void calculateSurfaceRotation();
   void calculateCornersInBaseFrame();

   gmtl::Matrix44f mSurfaceRotation;   
   /*
    * @name Rotation of the surface
    * Transform from the Base to the surface.
    */
   gmtl::Matrix44f   m_base_M_surface;
   gmtl::Matrix44f   m_surface_M_base;  

   gmtl::Point3f mLLCorner;
   gmtl::Point3f mLRCorner;
   gmtl::Point3f mURCorner;
   gmtl::Point3f mULCorner;

   gmtl::Point3f mxLLCorner;
   gmtl::Point3f mxLRCorner;
   gmtl::Point3f mxURCorner;
   gmtl::Point3f mxULCorner;

   float mOriginToScreen;
   float mOriginToRight;
   float mOriginToLeft;
   float mOriginToTop;
   float mOriginToBottom;
};

}

#endif

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