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
}
		loaa[nSides] = loaFront;
		
		double dI, dJ;
		Location[] loaI, loaJ;
		for ( int i = 0; i < nSides - 1; i++ )
		{
			loaI = loaa[i];
			for ( int j = i + 1; j < nSides; j++ )
			{
				loaJ = loaa[j];
				dI = getY( loaI, IConstants.AVERAGE );
				dJ = getY( loaJ, IConstants.AVERAGE );
				
				
				if ( ChartUtil.mathGT( dJ, dI ) ) 
				{
					loaa[i] = loaJ;
					loaa[j] = loaI;
					loaI = loaJ;
				}
				else if ( ChartUtil.mathEqual( dJ, dI ) )
				{
					dI = getX( loaI, IConstants.AVERAGE );
					dJ = getX( loaJ, IConstants.AVERAGE );
					if ( ChartUtil.mathGT( dI, dJ ) )
					{
						loaa[i] = loaJ;
						loaa[j] = loaI;
						loaI = loaJ;