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
* Identifies the series sequence # in the list of series renders(start from
	 * 0).
	 * 
	 * @return The index of the Series being rendered
	 */
	public final int getSeriesIndex( )
	{
		return iSeriesIndex;
	}
	/**
	 * @return Returns the series count for current chart rendering.
	 */
	public final int getSeriesCount( )
	{
		return iSeriesCount;
	}
	/**
	 * @return Returns the deferred cache associated with current renderer.
	 */
	public final DeferredCache getDeferredCache( )
	{
		return dc;
	}
	/**
	 * Provides access to any other renderer in the group that participates in
	 * chart rendering
	 * 
	 * @param iIndex
	 * @return
	 */