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/PlotWith2DAxes.java
dX = dBlockStart + dBlockLength;
					dX += dAppliedYAxisPlotSpacing;
					dX1 = dX;
					dX2 = dX;
					if ( bTicksRight )
					{
						dX2 += TICK_SIZE;
					}
					if ( oaxOverlay.getLabelPosition( ) == RIGHT )
					{
						dX2 += Math.max( dAxisLabelsThickness,
								dDecorationThickness[1] );
						dX1 -= Math.max( bTicksLeft ? TICK_SIZE : 0,
								dAppliedYAxisPlotSpacing );
					}
					else if ( oaxOverlay.getLabelPosition( ) == LEFT )
					{
						dX1 -= Math.max( ( bTicksLeft ? TICK_SIZE : 0 )
								+ dAxisLabelsThickness,
								dAppliedYAxisPlotSpacing );
						dX2 += dDecorationThickness[1];
					}
					if ( iTitleLocation == LEFT )
					{
						dX1 -= dAxisTitleThickness;
					}
					else if ( iTitleLocation == RIGHT )
					{
						dX2 += dAxisTitleThickness;