glcanvas2d.cpp

ncbi源码

/*
 * ===========================================================================
 * PRODUCTION $Log: glcanvas2d.cpp,v $
 * PRODUCTION Revision 1000.1  2004/06/01 20:50:33  gouriano
 * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.5
 * PRODUCTION
 * ===========================================================================
 */

/*  $Id: glcanvas2d.cpp,v 1000.1 2004/06/01 20:50:33 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:
 *    CGlCanvas2d -- provide standardized OpenGL view setup for FLTK
 */


#include <ncbi_pch.hpp>
#include <gui/opengl/glcanvas2d.hpp>


BEGIN_NCBI_SCOPE



CGlCanvas2d::CGlCanvas2d(int x, int y, int width, int height, const char* label)
    : CGlCanvas(x, y, width, height, label)
{
    m_Camera.SetLayout(CGlCamera::eOrtho);
    m_Camera.SetNearPlane  (   0.1f);
    m_Camera.SetFarPlane   (1000.0f);
    m_Camera.SetLeftPlane  ( 100.0f);
    m_Camera.SetRightPlane (-100.0f);
    m_Camera.SetTopPlane   ( 100.0f);
    m_Camera.SetBottomPlane(-100.0f);
}


CGlCanvas2d::~CGlCanvas2d(void)
{
}


//
// CGlCanvas2d::setupView(void)
// this function is responsible for establishing the standard view
// setup parameters, including viewport and viewing matrices
//
void CGlCanvas2d::x_SetupView(void)
{
    // set up a standard viewport
    glViewport(0, 0, w(), h());

    // set our viewing matrices.  we don't save the old matrices, so there is
    // no need to call ReleaseCurrent()
    m_Camera.MakeCurrent();

    // always leave in modelview matrix
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}


END_NCBI_SCOPE


/*
 * ===========================================================================
 * $Log: glcanvas2d.cpp,v $
 * Revision 1000.1  2004/06/01 20:50:33  gouriano
 * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.5
 *
 * Revision 1.5  2004/05/21 22:27:44  gorelenk
 * Added PCH ncbi_pch.hpp
 *
 * Revision 1.4  2003/09/29 15:44:40  dicuccio
 * Deprecated gui/scope.hpp.  Merged gui/core/types.hpp into gui/types.hpp
 *
 * Revision 1.3  2003/07/21 19:31:34  dicuccio
 * Added NULL callback for CGlCanvas - works around interenting problem with
 * Fl_Gl_Window's default callback.  Removed unused ctor.
 *
 * Revision 1.2  2003/06/03 17:42:06  dicuccio
 * Added texture support.  Added classes to handle OpenGL camera setup and
 * viewport specification.
 *
 * Revision 1.1  2003/05/06 16:00:33  dicuccio
 * Initial revision
 *
 * ===========================================================================
 */