Qt 4.7: gltrianglemesh.h Example File (demos/boxes/gltrianglemesh.h)

Qt Reference Documentation

# gltrianglemesh.h Example File

demos/boxes/gltrianglemesh.h

     /****************************************************************************
     **
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     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the demonstration applications of the Qt Toolkit.
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     #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