spline_window.hpp

ncbi源码

/*
 * ===========================================================================
 * PRODUCTION $Log: spline_window.hpp,v $
 * PRODUCTION Revision 1000.0  2004/04/12 19:14:18  gouriano
 * PRODUCTION PRODUCTION: IMPORTED [CATCHUP_003] Dev-tree R1.3
 * PRODUCTION
 * ===========================================================================
 */

#ifndef GUI_OPENGL_DEMO___GL3D_WINDOW__HPP
#define GUI_OPENGL_DEMO___GL3D_WINDOW__HPP

/*  $Id: spline_window.hpp,v 1000.0 2004/04/12 19:14:18 gouriano Exp $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Authors:  Mike DiCuccio
 *
 * File Description:
 *
 */

#include <corelib/ncbistd.hpp>
#include <gui/opengl/glcanvas3d.hpp>
#include <gui/opengl/glarcball.hpp>
#include <gui/math/curve_bezier.hpp>
#include <gui/opengl/glcurve.hpp>
#include <gui/opengl/gltube.hpp>

BEGIN_NCBI_SCOPE

class CSplineWindow : public CGlCanvas3d
{
public:
    // rendering states
    enum ERenderFlags {
        fRenderPoints        = 0x01,
        fRenderLines         = 0x02,
        fRenderControlPoints = 0x04
    };
    typedef int TRenderFlags;

    CSplineWindow(int x, int y, int w, int h, const char* label = NULL);

    // overridden draw()
    void draw(void);

    // overridden handle()
    int handle(int event);

    // overridden resize()
    void resize(int x, int y, int w, int h);


    void TogglePoints();
    void ToggleLines();
    void ToggleControlPoints();

private:

    // internal event states for better processing of drag events
    enum EState {
        eNormal,
        eRotate,
        ePan,
        eZoom,
        eDrag
    };

    // the current state of the window
    EState m_State;

    // rendering flags
    TRenderFlags m_Flags;

    // arc ball for rotation
    CGlArcBall m_Arcball;

    // distance to our target
    float m_TargetDistance;

    // last mouse position
    int m_LastMouseX;
    int m_LastMouseY;

    // the spline we render
    CGlCurve<CCurveBezier> m_Curve;

    // handlers for event states
    void x_Rotate(void);
    void x_Zoom(int dy);
    void x_Pan(int dx, int dy);
};


END_NCBI_SCOPE


/*
 * ===========================================================================
 * $Log: spline_window.hpp,v $
 * Revision 1000.0  2004/04/12 19:14:18  gouriano
 * PRODUCTION: IMPORTED [CATCHUP_003] Dev-tree R1.3
 *
 * Revision 1.3  2004/03/11 20:57:50  ucko
 * Correct path to curve_bezier.hpp
 *
 * Revision 1.2  2004/03/11 17:39:55  dicuccio
 * Render spline, not tube, by default
 *
 * Revision 1.1  2004/03/11 17:39:24  dicuccio
 * Added spline demo project
 *
 * ===========================================================================
 */

#endif  // GUI_OPENGL_DEMO___GL3D_WINDOW__HPP