public final void viewLocalArea(final double x, final double y, final double width, final double height)
    {
        final Transform t = Transform.createViewportTransform(x, y, width, height, m_wide, m_high);

        if (t != null)
        {
            setTransform(t);
        }
    }
public final void viewLocalArea ( final double x , final double y , final double width , final double height ) { final Transform t = Transform . createViewportTransform ( x , y , width , height , m_wide , m_high ) ; if ( t != null ) { setTransform ( t ) ; } }
Change the viewport's transform so that the specified area (in local or world coordinates)
is visible.

@param x
@param y
@param width
@param height