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
dX = bo.getLeft( );
		dY = bo.getTop( );
		
		bo.delta( xOffset, yOffset, wOffset, hOffset );
		dX = bo.getLeft( );
		dY = bo.getTop( );
		
		final double dBaseX = dX;
		final double dBaseY = dY;
		final RectangleRenderEvent rre = (RectangleRenderEvent) ( (EventObjectCache) ir ).getEventObject( StructureSource.createLegend( lg ),
				RectangleRenderEvent.class );
		
		if ( ca.getShadowColor( ) != null )
		{
			rre.setBounds( bo.translateInstance( 3, 3 ) );
			rre.setBackground( ca.getShadowColor( ) );
			ipr.fillRectangle( rre );
		}
		
		rre.setBounds( bo );
		rre.setOutline( lia );
		rre.setBackground( ca.getBackground( ) );
		ipr.fillRectangle( rre );
		ipr.drawRectangle( rre );
		lia = LineAttributesImpl.copyInstance( lia );
		lia.setVisible( true ); 
		LineAttributes liSep = lg.getSeparator( ) == null ? lia
				: lg.getSeparator( );
		final SeriesDefinition[] seda = cm.getSeriesForLegend( );