Bug 207268 Add visibility option for plot within axes
For chart with axes, we should make plot within axes invisible. Meantime, other plots, such as axes, legend and title, should be visible. This enhancement doesn't include UI change, and it is required for cross tab integration.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
/**
	 * Check if base axis's scale is set to 'Showoutside value'.
	 * 
	 * @return <code>true</code> if base axis's scale is set to 'Showoutside value'.
	 */
	protected boolean baseIsShowOutside( )
	{
		return getInternalBaseAxis( ).getModelAxis( ).getScale( ).isShowOutside( );
	}
	/**
	 * Restores the clipping
	 * 
	 * @param ipr
	 * @throws ChartException
	 */
	protected void restoreClipping( final IPrimitiveRenderer ipr )
			throws ChartException
	{
		
		final boolean bLastInSequence = ( iSeriesIndex == iSeriesCount - 1 );
		if ( bLastInSequence && !isDimension3D( )
				&& ( !isShowOutside( ) || !baseIsShowOutside( ) ) )
		{
			flushClipping( );
			ClipRenderEvent clip = new ClipRenderEvent( this );
			clip.setVertices( null );
			ipr.setClip( clip );
		}
	}