SPHERE.H

Data encapsulation is achieved by limiting direct access to member variables.
Member variables and functions declared as protected can only be accessed by children of a class.
Member variables and functions declared as private can not be accessed by anyone outside of the class.

class sphere 
	{
	public:
	void setRadius(float value) { diameter = value*2.0; }
	float getRadius(void) { return diameter/2.0; }
	protected:
	float xPosition;
	float yPosition;
	float zPosition;
	private:
	void resetPosition(void) { xPosition = 0.0; yPosition = 0.0; zPosition = 0.0; }
	float diameter;
	};