Sphere.h

#ifndef STK_SPHERE_H
#define STK_SPHERE_H
 
#include "Stk.h"
#include "Vector3D.h"
 
namespace stk {
 
/***************************************************/
/***************************************************/
 
class Sphere : public Stk
{
public:
  Sphere( StkFloat radius = 1.0 ) { radius_ = radius; mass_ = 1.0; };
 
  void setPosition( StkFloat x, StkFloat y, StkFloat z ) { position_.setXYZ(x, y, z); };
 
  void setVelocity( StkFloat x, StkFloat y, StkFloat z ) { velocity_.setXYZ(x, y, z); };
 
  void setRadius( StkFloat radius ) { radius_ = radius; };
 
  void setMass( StkFloat mass ) { mass_ = mass; };
 
  Vector3D* getPosition( void ) { return &position_; };
 
  Vector3D* getRelativePosition( Vector3D *position );
 
  StkFloat getVelocity( Vector3D* velocity );
 
  StkFloat isInside( Vector3D *position );
 
  StkFloat getRadius( void ) { return radius_; };
 
  StkFloat getMass( void ) { return mass_; };
 
  void addVelocity( StkFloat x, StkFloat y, StkFloat z );
 
  void tick( StkFloat timeIncrement );
   
private:
  Vector3D position_;
  Vector3D velocity_;
  Vector3D workingVector_;
  StkFloat radius_;
  StkFloat mass_;
};
 
inline void Sphere::tick( StkFloat timeIncrement )
{
  position_.setX(position_.getX() + (timeIncrement * velocity_.getX()));
  position_.setY(position_.getY() + (timeIncrement * velocity_.getY()));
  position_.setZ(position_.getZ() + (timeIncrement * velocity_.getZ()));
};
 
} // stk namespace
 
#endif