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 ( StructureType.SERIES_DATA_POINT.equals( source.getType( ) ) )
		{
			DataPointHints dph = (DataPointHints) source.getSource( );
			if ( tg.getAction( ).getType( ) == ActionType.SHOW_TOOLTIP_LITERAL )
			{
				
				String toolText = ( (TooltipValue) tg.getAction( ).getValue( ) ).getText( );
				
				
				
				if ( toolText == null )
				{
					( (TooltipValue) tg.getAction( ).getValue( ) ).setText( dph.getDisplayValue( ) );
				}
			}
			else if ( tg.getAction( ).getType( ) == ActionType.URL_REDIRECT_LITERAL )
			{
				
				final URLValue uv = (URLValue) tg.getAction( ).getValue( );
				String sBaseURL = uv.getBaseUrl( );
				if ( sBaseURL == null )
				{
					sBaseURL = ""; 
				}
				final StringBuffer sb = new StringBuffer( sBaseURL );
				char c = '?';
				if ( sBaseURL.indexOf( c ) != -1 )
				{
					c = '&';
				}