Bug 188029 Top face is missing in Area chart of 2D+ with negative values
Top face is missing in Area chart of 2D+ with negative values. Please see attached screenshot.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/AxisSubUnit.java
private double dValueMin = 0;
	private double dPositiveTotal = 0;
	private double dNegativeTotal = 0;
	private double dLastValue = 0;
	
	private double dLastMaxPosition = Double.NaN;
	
	
	private double dLastMinPosition = Double.NaN;
	
	AxisSubUnit( )
	{
	}
	public final void reset( )
	{
		dValueMax = 0;
		dValueMin = 0;
		dLastValue = 0;
	}
	public final double getLastValue( )
	{
		return dLastValue;
	}
	public final void setLastValue( double dLastValue )
	{
		this.dLastValue = dLastValue;
	}
	/**
	 * @return Returns the valueMax.
	 */