return (int) (a*(x-tW)+b);
return (int) (a*y+b);
	int convertGraphicsIntoReal(int x)	{		int b = control.getGlobalMaximum(); 		double a =  			(double) (control.getGlobalMinimum()-b)/(double) rangeGraphics;		return (int) (a*(x-tW)+b);	}