C / C++ / MFC

Void RenderScene()
{	
	glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT );

	float R = (float)GetRValue(m_s3DDispManagerSetting.dwScreenBkColor)/255.0;
	float G = (float)GetGValue(m_s3DDispManagerSetting.dwScreenBkColor)/255.0;
	float B = (float)GetBValue(m_s3DDispManagerSetting.dwScreenBkColor)/255.0;
	::glClearColor(R, G, B, 0.0f); 


    	glPushMatrix();
	glLoadIdentity();
	
	glShadeModel(GL_FLAT) ;
	glEnable(GL_NORMALIZE) ;

	multimap<int , stObjectInfo>::iterator it;	

	//Scalling as per user selection
	glScalef(m_fScale, m_fScale, m_fScale);

	//3D rotation angle
	glRotated(m_fRAngle[0],1.0, 0.0, 0.0);
	glRotated(m_fRAngle[1],0.0,1.0, 0.0);
	glRotated(m_fRAngle[2],0.0,0.0,1.0);
	
	
	glDepthMask(GL_TRUE);


	for(it = m_sMapObjectInfo.begin(); it != m_sMapObjectInfo.end(); it++)
	{
		stObjectInfo sObjectInfo = (*it).second;
		if(sObjectInfo.eObjectType == OBJECT_LINE)
			glCallList((*it).first);
	}		
 	for(it = m_sMapObjectInfo.begin(); it != m_sMapObjectInfo.end(); it++)
	{
		stObjectInfo sObjectInfo = (*it).second;
		if(sObjectInfo.eObjectType == OBJECT_POINT)
			glCallList((*it).first);
	}
	
	for(it = m_sMapObjectInfo.begin(); it != m_sMapObjectInfo.end(); it++)
	{
		stObjectInfo sObjectInfo = (*it).second;
		if(sObjectInfo.eObjectType == OBJECT_TEXT)
			glCallList((*it).first);
	}		
	for(it = m_sMapObjectInfo.begin(); it != m_sMapObjectInfo.end(); it++)
	{
		stObjectInfo sObjectInfo = (*it).second;
		if(sObjectInfo.eObjectType == OBJECT_IMAGE)
		   glCallList((*it).first);
	}
	for(it = m_sMapObjectInfo.begin(); it != m_sMapObjectInfo.end(); it++)
	
   
	glEnable(GL_CULL_FACE);
	glCullFace(GL_BACK);			
	glFrontFace(GL_CW);		

	for(it = m_sMapObjectInfo.begin(); it != m_sMapObjectInfo.end(); it++)
	{
		stObjectInfo sObjectInfo = (*it).second;
		if(sObjectInfo.eObjectType == OBJECT_3D)
		{
			glMaterialfv(GL_FRONT_AND_BACK , GL_DIFFUSE, sObjectInfo.fIntensity);
			glCallList((*it).first);
		}
	}

	glDisable(GL_CULL_FACE);
	glDisable(GL_BLEND);			
	glPopMatrix();	
	
}