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
return;
		}
		final boolean bFirstInSequence = ( iSeriesIndex == 0 );
		final boolean bLastInSequence = ( iSeriesIndex == iSeriesCount - 1 );
		if ( bFirstInSequence )
		{
			renderBackground( ipr, p );
		}
		if ( getSeries( ) != null )
		{
			ScriptHandler.callFunction( getRunTimeContext( ).getScriptHandler( ),
					ScriptHandler.BEFORE_DRAW_SERIES,
					getSeries( ),
					this,
					getRunTimeContext( ).getScriptContext( ) );
			getRunTimeContext( ).notifyStructureChange( IStructureDefinitionListener.BEFORE_DRAW_SERIES,
					getSeries( ) );
			renderSeries( ipr, p, srh ); 
			
			ScriptHandler.callFunction( getRunTimeContext( ).getScriptHandler( ),
					ScriptHandler.AFTER_DRAW_SERIES,
					getSeries( ),
					this,
					getRunTimeContext( ).getScriptContext( ) );
			getRunTimeContext( ).notifyStructureChange( IStructureDefinitionListener.AFTER_DRAW_SERIES,
					getSeries( ) );
		}
		if ( bLastInSequence )
		{