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ScenePane.h

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/*
    File:           ScenePane.h

    Function:       'ScenePane' provides a pane which you can attach a scene
                    to. The pane then lets the user manipulate the view of the
                    scene.

    Author(s):      Andrew Willmott

    Copyright:      (c) 1995-2000, Andrew Willmott
 */

#ifndef __ScenePane__
#define __ScenePane__

#include "gcl/GLXPane.h"
#include "gcl/SceneObjects.h"
#include "gcl/MRModel.h"

class scFrame;

class ScenePane : public GLXPane
{
public: 
    ScenePane(Bool doubleBuf = true);
    
    virtual Void    SetScene(scScenePtr scene);
    
    virtual Void    Redraw();               
    // Force redraw of scene.
    Void            ViewFrom(Point &position, Vector &normal);
    // Change viewing point
    Void            Restore();

    virtual Void    StartDrag(Coord start, Int modifiers);
    virtual Void    Drag(Coord current, Int modifiers);
    // Mouse is being dragged from start, currently at current.
    virtual Void    EndDrag(Coord end, Int modifiers);
    // Mouse was dragged from start to end.

    Void            ComplexityDrag();
    Void            SceneRotDrag();
    Void            SceneTransDrag();
            
    Void            HandleKey(Char c);
    Void            HandleExpose();
    Void            TrackMouse(Int x, Int y, Int modifiers);

    Void            SetGrid(Bool on);
    Void            SetAxes(Bool on);

    Camera*         ItsCamera() { return(itsCamera); };
    scScenePtr      ItsScene() { return(itsScene); };

    Void            SetCameraParams();
    
    MRModelsFinder  models;

protected:
    Coord           dragStart;
    Int             modifiersStart;
    Coord           offset;
    GCLReal         baseErr;

    Coord           rot;
    Vector          trans;
    GCLReal         zoom;
    
    Coord           tRot;
    Vector          tTrans;
    GCLReal         tZoom;
    
    Bool            wire;
    scScenePtr      itsScene;
    scFrame         *frame;
    scCamera        *itsCamera;
    Bool            gridShown;
    Bool            axesShown;
};

class ScenePane2D : public ScenePane
{
public:
    Void            SetScene(scScenePtr scene);
    Void            Drag(Coord current, Int modifiers);
};

#endif

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