Bug 176582 "Show Lines as Curves" does not work correctly for Area Chart [0001]
Description: "Show Lines as Curves" does not work correctly for Area Chart. Build number: 2.2.0.v20070307-1128 Steps to reproduce: 1. New a Area Chart. 2. In "Format Chart" tab, select Series->Value (Y) Series, tick and untick "Show Lines as Curves" checkbox. Expected result: Null value point e is treated the same when tick and untick "Show Lines as Curves" checkbox. Actual result: Null value point e is treated differently (see the screenshot). Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
}
			else if ( ta.getHorizontalAlignment( ) == HorizontalAlignment.RIGHT_LITERAL )
			{
				ta.setHorizontalAlignment( HorizontalAlignment.LEFT_LITERAL );
			}
		}
		return ta;
	}
	/**
	 * Returns if interactivity is enabled on the model.
	 * 
	 * @return
	 */
	public boolean isInteractivityEnabled( )
	{
		return ( cm.getInteractivity( ) == null || cm.getInteractivity( )
				.isEnable( ) );
	}
	/**
	 * Returns if the corresponding category entry is filtered as minslice in
	 * legend. Subclass should override this method to implement their own
	 * legend strategy.
	 * 
	 * @return return null if no minslice applied or minslice feature is not
	 *         supported.
	 */
	public int[] getFilteredMinSliceEntry( DataSetIterator dsi )
	{
		
		return null;