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
dDeltaHeight = bo.getHeight( ) / 2;
		}
		if ( isRightToLeft( ) )
		{
			tre.setLocation( LocationImpl.create( dX
					+ dColumnWidth
					- dLeftInset
					- 3
					* dItemHeight
					/ 2
					- dHorizontalSpacing, bo.getTop( ) + dDeltaHeight ) );
			tre.setTextPosition( TextRenderEvent.LEFT );
		}
		else
		{
			tre.setLocation( LocationImpl.create( dX
					+ dLeftInset
					+ ( 3 * dItemHeight / 2 )
					+ dHorizontalSpacing, bo.getTop( ) + dDeltaHeight ) );
			tre.setTextPosition( TextRenderEvent.RIGHT );
		}
		if ( la.isVisible( ) )
		{
			tre.setLabel( la );
			tre.setAction( TextRenderEvent.RENDER_TEXT_AT_LOCATION );
			ipr.drawText( tre );
		}
		
		if ( valueLa != null )
		{