Qt Reference Documentation

- Qt 4.8
- ALL VERSIONS

- A
- A
- A
- Print

# gltrianglemesh.h Example File

demos/boxes/gltrianglemesh.h

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the demonstration applications of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** Commercial License Usage
     ** Licensees holding valid commercial Qt licenses may use this file in
     ** accordance with the commercial license agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
     ** a written agreement between you and The Qt Company. For licensing terms
     ** and conditions see http://www.qt.io/terms-conditions. For further
     ** information use the contact form at http://www.qt.io/contact-us.
     **
     ** GNU Lesser General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU Lesser
     ** General Public License version 2.1 or version 3 as published by the Free
     ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
     ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
     ** following information to ensure the GNU Lesser General Public License
     ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
     ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
     ** As a special exception, The Qt Company gives you certain additional
     ** rights. These rights are described in The Qt Company LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU General Public License version 3.0 requirements will be
     ** met: http://www.gnu.org/copyleft/gpl.html.
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #ifndef GLTRIANGLEMESH_H
     #define GLTRIANGLEMESH_H

     //#include <GL/glew.h>
     #include "glextensions.h"

     #include <QtGui>
     #include <QtOpenGL>

     #include "glbuffers.h"

     template<class TVertex, class TIndex>
     class GLTriangleMesh
     {
     public:
         GLTriangleMesh(int vertexCount, int indexCount) : m_vb(vertexCount), m_ib(indexCount)
         {
         }

         virtual ~GLTriangleMesh()
         {
         }

         virtual void draw()
         {
             if (failed())
                 return;

             int type = GL_UNSIGNED_INT;
             if (sizeof(TIndex) == sizeof(char)) type = GL_UNSIGNED_BYTE;
             if (sizeof(TIndex) == sizeof(short)) type = GL_UNSIGNED_SHORT;

             m_vb.bind();
             m_ib.bind();
             glDrawElements(GL_TRIANGLES, m_ib.length(), type, BUFFER_OFFSET(0));
             m_vb.unbind();
             m_ib.unbind();
         }

         bool failed()
         {
             return m_vb.failed() || m_ib.failed();
         }
     protected:
         GLVertexBuffer<TVertex> m_vb;
         GLIndexBuffer<TIndex> m_ib;
     };

     #endif