Bug 211773 Legend entries overlap
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
{
				continue;
			}
			al.add( ll[i] );
		}
		if ( ll instanceof Location3D[] )
		{
			return (Location3D[]) al.toArray( new Location3D[al.size( )] );
		}
		return (Location[]) al.toArray( new Location[al.size( )] );
	}
	/**
	 * Check the if the given value is NaN.
	 * 
	 * @param value
	 * @return
	 */
	protected static boolean isNaN( Object value )
	{
		return ( value == null )
				|| ( value instanceof Number && Double.isNaN( ( (Number) value ).doubleValue( ) ) );
	}
	/**
	 * Returns if the right-left mode is enabled.
	 * 
	 * @return
	 */
	public boolean isRightToLeft( )
	{
		if ( rtc == null )