Line data    Source code

       1             : 
       2             : /* Copyright (c) 2006-2011, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or modify it under
       5             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       6             :  * by the Free Software Foundation.
       7             :  *
       8             :  * This library is distributed in the hope that it will be useful, but WITHOUT
       9             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      10             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      11             :  * details.
      12             :  *
      13             :  * You should have received a copy of the GNU Lesser General Public License
      14             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      15             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      16             :  */
      17             : 
      18             : #ifndef EQSERVER_FRUSTUMDATA_H
      19             : #define EQSERVER_FRUSTUMDATA_H
      20             : 
      21             : #include "types.h"
      22             : #include <eq/server/api.h>
      23             : 
      24             : #include <eq/fabric/eye.h>  // EYE enum
      25             : #include <eq/fabric/wall.h> // Wall::Type enum
      26             : 
      27             : namespace eq
      28             : {
      29             : namespace server
      30             : {
      31             : /**
      32             :  * Data derived from fabric::Frustum, in a general, optimized format used
      33             :  * for frustum calculations during rendering.
      34             :  */
      35         812 : class FrustumData
      36             : {
      37             : public:
      38             :     EQSERVER_API FrustumData();
      39             : 
      40         590 :     bool isValid() const { return (_width != 0.f && _height != 0.f); }
      41        4212 :     void invalidate()
      42             :     {
      43        4212 :         _width = 0.f;
      44        4212 :         _height = 0.f;
      45        4212 :     }
      46             : 
      47             :     /** @name Data Update. */
      48             :     //@{
      49             :     /** Update the frustum data using the given projection. */
      50             :     void applyProjection(const fabric::Projection& projection);
      51             : 
      52             :     /** Update the frustum data using the given wall. */
      53             :     EQSERVER_API void applyWall(const fabric::Wall& wall);
      54             :     //@}
      55             : 
      56             :     /** @name Data Access. */
      57             :     //@{
      58             :     /** @return the frustum plane transformation */
      59          51 :     const Matrix4f& getTransform() const { return _xfm; }
      60             :     /** @return the frustum plane width */
      61          35 :     float getWidth() const { return _width; }
      62             :     /** @return the frustum plane height */
      63          35 :     float getHeight() const { return _height; }
      64             :     /** @return the projection type. */
      65          64 :     fabric::Wall::Type getType() const { return _type; }
      66             :     //@}
      67             : 
      68             : private:
      69             :     float _width;
      70             :     float _height;
      71             :     Matrix4f _xfm;
      72             :     fabric::Wall::Type _type;
      73             : };
      74             : 
      75             : std::ostream& operator<<(std::ostream& os, const FrustumData&);
      76             : }
      77             : }
      78             : #endif // EQ_FRUSTUMDATA_H