Bug 168839 Chart Legend Toggle Visibility does not work correctly for Pie chart in SVG[0001]
Description: Chart Legend Toggle Visibility does not work correctly . Build number: 2.1.2.v20061221-0710 Steps to reproduce: 1. Preview the attached design file. 2. Click the legend. Expected result: Toggle Visibility works correctly. Actual result: Pie slice of different color disappears when being click. Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
protected transient RunTimeContext rtc = null;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.engine/render" ); 
	/**
	 * The internal constructor that must be defined as public
	 * 
	 * @param _ir
	 * @param _cm
	 */
	public BaseRenderer( )
	{
	}
	/**
	 * Sets the context infomation for current renderer.
	 * 
	 * @param _cm
	 * @param _o
	 * @param _se
	 * @param _ax
	 * @param _sd
	 */
	public void set( Chart _cm, Object _oComputation, Series _se,
			SeriesDefinition _sd )
	{
		cm = _cm;
		oComputations = _oComputation;
		se = _se;
		sd = _sd;
	}
	/**
	 * Sets the deferred cache used by current renderer.