////////////////////////////////////////////////////////////////////////////////
//                            spinningCubeEngine.h                            //
////////////////////////////////////////////////////////////////////////////////
#ifndef SPINNING_CUBE_ENGINE_H
#define SPINNING_CUBE_ENGINE_H

#include <animal/engine/engine.h>
#include <animal/vec3.h>

namespace animal{

/// This is a simple engine in order to show how to use AnimAL engines, and
/// events. This engine makes an object, more precisely a cube, turn around
/// the z axe: move(dt). It can be init and drawn: init() and draw().
/// The position of the object and the angular velocity can be set.
class SpinningCubeEngine : public Engine
{
public :
    SpinningCubeEngine();

    //===============================================================
    /** @name Virtual methods */
    //@{
    
    /// Initialize the positions
    virtual void reset();
  
    /// Move the object
    virtual void move(double dt);
    
    /// Draw the object
    virtual void draw();
    
    /// Compute the bounding box of the object
    virtual void getBoundingBox( float & minX, float & minY, float & minZ,
                                float & maxX, float & maxY, float & maxZ);
    
    //====================== Mouse and key board events
    /// Deal with key press event. 
    virtual void keyPressEvent(KeyEvent *e);
    /// Deal with mouse double-click event. 
    virtual void mouseDoubleClickEvent(MouseEvent * e);
    /// Deal with mouse move event. 
    virtual void mouseMoveEvent(MouseEvent * e);
    /// Deal with mouse press event. 
    virtual void mousePressEvent(MouseEvent * e);
    /// Deal with mouse release event. 
    virtual void mouseReleaseEvent(MouseEvent * e);
   
    //@}
    //================================================================
    
    //====================== Getters
    /// Get the angular velocity (Rad/s)
    float * getAngularVelocity(){ return & angularVelocity; }
    
    //====================== Setters
    /// Set the angular velocity (Rad/s)
    void setAngularVelocity(float v){ angularVelocity = v;}
    
public: // Attributes
    /// The angular velocity (Rad/s)
    float angularVelocity;

private:
    /// The rotation angle around the z axe 
    float rotation_z;
    /// The size of the object which is a cube
    float cubeSize;
};

}//namespace animal

#endif