Bug 194727 Pyramid chart with 2d+ dimension should like a pyramid
Pyramid chart in 2d+ dimension should like a pyramid, rather than a triangle with depth effect. In addition, pyramid in 2d+ should like itself in 3d as well. Take a look at attached screenshot to compare the charts.
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;