public boolean CollisionPossible(Particle P){
		if ((this.getX()).Distance(P.getX()) <= (this.CollisionRadius + P.CollisionRadius) )
		{
			//	if particles interaction circles touch or overlap then return true
			System.out.println("particles close enuff");
			return true;
		}
		else return false;
		

    }

    /**
     * Get within distance
     * @param - Particle 1
     * @param - Particle 2
     * @param - distance to check
     * @return boolean: true - particles are within that distance of each other
     */
	public static boolean withinDist(Particle Q, Particle P, double dist)
	{
		if( (Q.getX()).Distance(P.getX()) <= dist ) return true;
		return false;  
	}