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
double dLength = 0;
				for ( int j = 0; j < iTickCount - 1; j++ )
				{
					if ( aax.areAxesSwapped( ) )
					{
						
						if ( ( dY <= daTickCoordinates[j] && dY >= daTickCoordinates[j + 1] )
								|| ( dY <= daTickCoordinates[j + 1] && dY >= daTickCoordinates[j] ) )
						{
							
							dLength = daTickCoordinates[j + 1]
									- daTickCoordinates[j];
							break;
						}
					}
					else
					{
						if ( ( dX <= daTickCoordinates[j + 1] && dX >= daTickCoordinates[j] )
								|| ( dX <= daTickCoordinates[j] && dX >= daTickCoordinates[j + 1] ) )
						{
							dLength = daTickCoordinates[j + 1]
									- daTickCoordinates[j];
							break;
						}
					}
				}
				Object percentileValue = null;
				if ( total != 0 )
				{
					if ( oDataOrthogonal instanceof Number )