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
if ( bLastInSequence )
		{
			try
			{
				fDeferredCacheManager.flushAll( ); 
			}
			catch ( ChartException ex )
			{
				
				throw new ChartException( ChartEnginePlugin.ID,
						ChartException.RENDERING,
						ex );
			}
			logger.log( ILogger.INFORMATION,
					Messages.getString( "info.elapsed.render.time", 
							new Object[]{
								new Long( lTimer )
							},
							rtc.getULocale( ) ) );
			htRenderers.remove( TIMER );
		}
	}
	/**
	 * Renders the legend block based on the legend rendering rules.
	 * 
	 * @param ipr
	 * @param lg
	 * @param htRenderers
	 * 
	 * @throws ChartException