Version 4.1

include/Sphere.h

@@ -0,0 +1,70 @@
+/***************************************************/
+/*! \class Sphere
+    \brief STK sphere class.
+
+    This class implements a spherical ball with
+    radius, mass, position, and velocity parameters.
+
+    by Perry R. Cook, 1995 - 2002.
+*/
+/***************************************************/
+
+#if !defined(__SPHERE_H)
+#define __SPHERE_H
+
+#include "Vector3D.h"
+
+class Sphere
+{
+public:
+  //! Constructor taking an initial radius value.
+  Sphere(double initRadius);
+
+  //! Class destructor.
+  ~Sphere();
+
+  //! Set the 3D center position of the sphere.
+  void setPosition(double anX, double aY, double aZ);
+
+  //! Set the 3D velocity of the sphere.
+  void setVelocity(double anX, double aY, double aZ);
+
+  //! Set the radius of the sphere.
+  void setRadius(double aRadius);
+
+  //! Set the mass of the sphere.
+  void setMass(double aMass);
+
+  //! Get the current position of the sphere as a 3D vector.
+  Vector3D* getPosition();
+
+  //! Get the relative position of the given point to the sphere as a 3D vector.
+  Vector3D* getRelativePosition(Vector3D *aPosition);
+
+  //! Set the velcoity of the sphere as a 3D vector.
+  double getVelocity(Vector3D* aVelocity);
+
+  //! Returns the distance from the sphere boundary to the given position (< 0 if inside).
+  double isInside(Vector3D *aPosition);
+
+  //! Get the current sphere radius.
+  double getRadius();
+
+  //! Get the current sphere mass.
+  double getMass();
+
+  //! Increase the current sphere velocity by the given 3D components.
+  void addVelocity(double anX, double aY, double aZ);
+
+  //! Move the sphere for the given time increment.
+  void tick(double timeIncrement);
+   
+private:
+  Vector3D *myPosition;
+  Vector3D *myVelocity;
+  Vector3D workingVector;
+  double myRadius;
+  double myMass;
+};
+
+#endif