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
tempPoints = fixNull( loPoints, this.iRender.getPlotBounds( ) );
			faX = LocationImpl.getXArray( tempPoints );
			faY = LocationImpl.getYArray( tempPoints );
			if ( bRendering3D )
			{
				faZ = Location3DImpl.getZArray( (Location3D[]) tempPoints );
			}
			else
			{
				faZ = null;
			}
			iNumberOfPoints = faX.length;
			if ( iNumberOfPoints <= 1 )
			{
				return;
			}
			
			spX = new Spline( faX ); 
			
			spY = new Spline( faY ); 
			fa = new double[iNumberOfPoints];
			for ( int i = 0; i < iNumberOfPoints; i++ )
			{
				fa[i] = i;
			}
			renderCurve( ipr, 0, 0 ); 
		}
	}
	/**