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/*****************************************************************************
*
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* Copyright (c) 2000 - 2012, Lawrence Livermore National Security, LLC
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* Produced at the Lawrence Livermore National Laboratory
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* LLNL-CODE-442911
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* All rights reserved.
*
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* This file is  part of VisIt. For  details, see https://visit.llnl.gov/.  The
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* full copyright notice is contained in the file COPYRIGHT located at the root
* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
*
* Redistribution  and  use  in  source  and  binary  forms,  with  or  without
* modification, are permitted provided that the following conditions are met:
*
*  - Redistributions of  source code must  retain the above  copyright notice,
*    this list of conditions and the disclaimer below.
*  - Redistributions in binary form must reproduce the above copyright notice,
*    this  list of  conditions  and  the  disclaimer (as noted below)  in  the
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*    documentation and/or other materials provided with the distribution.
*  - Neither the name of  the LLNS/LLNL nor the names of  its contributors may
*    be used to endorse or promote products derived from this software without
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*    specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT  HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR  IMPLIED WARRANTIES, INCLUDING,  BUT NOT  LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND  FITNESS FOR A PARTICULAR  PURPOSE
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* ARE  DISCLAIMED. IN  NO EVENT  SHALL LAWRENCE  LIVERMORE NATIONAL  SECURITY,
* LLC, THE  U.S.  DEPARTMENT OF  ENERGY  OR  CONTRIBUTORS BE  LIABLE  FOR  ANY
* DIRECT,  INDIRECT,   INCIDENTAL,   SPECIAL,   EXEMPLARY,  OR   CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT  LIMITED TO, PROCUREMENT OF  SUBSTITUTE GOODS OR
* SERVICES; LOSS OF  USE, DATA, OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER
* CAUSED  AND  ON  ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT
* LIABILITY, OR TORT  (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY  WAY
* OUT OF THE  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*****************************************************************************/

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// ************************************************************************* //
//                                avtViewInfo.h                              //
// ************************************************************************* //

#ifndef AVT_VIEW_INFO_H
#define AVT_VIEW_INFO_H
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#include <view_exports.h>
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class vtkCamera;

// ****************************************************************************
//  Class: avtViewInfo
//
//  Purpose:
//    Contains all of the information for the view.
//
//  Programmer: Hank Childs
//  Creation:   November 27, 2000
//
//  Modifications:
//   Hank Childs, Wed Dec 27 14:28:01 PST 2000
//   Added viewUp.
//
//   Kathleen Bonnell, Thu Jan  4 15:40:32 PST 2001 
//   Added method to set the data members from a vtkCamera.
//
//   Kathleen Bonnell, Mon Jan  8 11:56:50 PST 2001 
//   Added method to set the data members to a vtkCamera.
//
//   Hank Childs, Mon Jun 18 09:03:19 PDT 2001
//   Added constructor.
//
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//   Eric Brugger, Fri Jun  6 15:29:28 PDT 2003
//   I added image pan and image zoom.
//
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//   Hank Childs, Wed Oct 15 13:09:03 PDT 2003
//   Added eye angle.
//
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//   Jeremy Meredith, Mon Aug  2 14:23:08 EDT 2010
//   Add shear for oblique projection support.
//
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// ****************************************************************************

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struct AVTVIEW_API avtViewInfo
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{
    double   camera[3];
    double   focus[3];
    double   viewUp[3];
    double   viewAngle;
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    double   eyeAngle;
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    double   parallelScale;
    bool     setScale;
    double   nearPlane;
    double   farPlane;
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    double   imagePan[2];
    double   imageZoom;
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    bool     orthographic;
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    double   shear[3];
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  public:
                    avtViewInfo();
    avtViewInfo   & operator=(const avtViewInfo &);
    bool            operator==(const avtViewInfo &);
    void            SetToDefault(void);
    void            SetViewFromCamera(vtkCamera *);
    void            SetCameraFromView(vtkCamera *) const;
};


#endif