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/CurveRenderer.java
double[] lastY = null;
			if ( obj instanceof List && ( (List) obj ).size( ) > 0 )
			{
				List lst = (List) obj;
				for ( int i = 0; i < lst.size( ); i++ )
				{
					Object o = lst.get( i );
					if ( o instanceof double[] )
					{
						if ( lastX == null )
						{
							lastX = new double[lst.size( )];
							lastY = new double[lastX.length];
						}
						lastX[i] = ( (double[]) o )[0];
						lastY[i] = ( (double[]) o )[1];
					}
					else
					{
						lastX = null;
						lastY = null;
						break;
					}
				}
			}
			if ( lastX != null )
			{
				List lst = new ArrayList( );
				for ( int i = 0; i < points.size( ); i++ )
				{