//****************************************************************************

//! \file wengine.hpp
//! \date 06-03-2003

//! \class WEngine
//! \brief The engine of the Weird Demo
//****************************************************************************

//     This file is part of the Weird Demo.
//
//     The Weird Demo is free software; you can redistribute it and/or modify
//     it under the terms of the GNU General Public License as published by
//     the Free Software Foundation; either version 2 of the License, or
//     (at your option) any later version.
//
//     The Weird Demo is distributed in the hope that it will be useful,
//     but WITHOUT ANY WARRANTY; without even the implied warranty of
//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//     GNU General Public License for more details.
//
//     You should have received a copy of the GNU General Public License
//     along with DataView; if not, write to the Free Software
//     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

//****************************************************************************
#ifndef WENGINE_HPP
#define WENGINE_HPP

#include "engine/engine.hpp"

//***************************************************************************
class WEngine : public GLView
//----------------------------------------------------------------------------
//! It is derived from GLView and does the actual demo
//***************************************************************************
{
	Q_OBJECT

public:

	//! \brief Constructor, derived from the QGLWidget Constructor
	//! \param parent the parent widged (0 if top level)
	//! \param name the name of the widget
	WEngine( QWidget *parent, char const *name);
	//! \brief Destructor
	~WEngine();

	//! \brief response to key events needed for moving of reference point
	virtual void evKeyPress( QKeyEvent *);

	//! \brief Set up everything that has to be set up (non OpenGL stuff)
	//! \attention must be called before the Widget is made visible
	//! \param sm The GL shading model
	//! \param df The GL depth function
	//! \param in the time intervall for the widgets timer (in ms)
	virtual void Init( const unsigned int sm = GL_SMOOTH, const unsigned int df = GL_LEQUAL, const int in = 50);

protected:

	unsigned int object; //!< two untextured spheres (test)

	//! This function acts as a kind of film script for the demo
	//! \brief this is the function that actually directs the demo
	virtual void director();
	//! \brief moves the lights according to their velocities (actually no need to overload)
	virtual void adjustLights();
	//! \brief moves the camera according to its velocities  (actually no need to overload either)
	virtual void adjustCamera();
	//! \brief moves the objects in the scene according to their velocities
	virtual void adjustScene();
	//! \brief makes if activated the objects shadows
	//! \attention only support for non rotating cubes till now
	virtual void makeShades();

	virtual void makeCont();

	//! \brief overloaded member function inherited from QGLWidget sets up all OpenGL related stuff
	virtual void initializeGL();

private:

	bool switcher;
	int texanim;

	unsigned int transo; //!< a translucend sphere (test)
	unsigned int tetra; //!< an untextured Tetraeder
	unsigned int texo; //!< a textured crate (test)

	GLUquadricObj *quad; //!< used for displaying a sphere

	// object making functions
	void makeTetra();
	void makeObject();
	void makeTransObject();
	void makeTexObject();

};

#endif