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
renderLegendItem( ipr,
								lg,
								la,
								null,
								dBaseX + lih.getLeft( ),
								dBaseY + lih.getTop( ) + insCA.getTop( ),
								lih.getWidth( ),
								dItemHeight,
								lih.getHeight( ),
								0,
								columnWidth,
								insCA.getLeft( ),
								dHorizontalSpacing,
								seBase,
								fPaletteEntry,
								lirh,
								lih.getCategoryIndex( ),
								dScale );
					}
				}
			}
			else if ( d.getValue( ) == Direction.TOP_BOTTOM )
			{
				if ( lilh.getLegendItemHints( ) == null )
				{
					throw new ChartException( ChartEnginePlugin.ID,
							ChartException.RENDERING,
							"exception.null.legend.item.hints", 
							Messages.getResourceBundle( rtc.getULocale( ) ) );
				}