wheelwidth = this.getWidth();
wheelwidth = this.getWidth() < this.getHeight() ? this.getWidth() : this.getHeight();
	void changePanelSize()	{		wheelwidth = this.getWidth();		radius = wheelwidth/2;		puckColour = Color.black;		puckfillColour = Color.white;		img = new BufferedImage((int) wheelwidth,(int) wheelwidth, 				BufferedImage.TYPE_INT_ARGB);		buildLUT();		createColourWheelFromLUT();		findPuck();	}