Bug 104986 Backgound image uses an absolute path
Currently Chart uses an absolute path to indicate a backgournd image, that may cause the design unusable on other environments. Expected the background image can be definded in multiple ways like in report designer. e.g. URI(absolute path), File(relative path), Embedded Image(Encoded Image Data).
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderer.java
&& iDimension == IConstants.TWO_5_D )
			{
				trae.setTranslation( -dSeriesThickness, dSeriesThickness );
				ipr.applyTransformation( trae );
			}
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.render.BaseRenderer#set(org.eclipse.birt.chart.model.Chart,
	 *      java.lang.Object, org.eclipse.birt.chart.model.component.Series,
	 *      org.eclipse.birt.chart.model.component.Axis,
	 *      org.eclipse.birt.chart.model.data.SeriesDefinition)
	 */
	public final void set( Chart _cm, Object _o, Series _se, Axis _ax,
			SeriesDefinition _sd )
	{
		super.set( _cm, _o, _se, _ax, _sd );
		ax = _ax; 
	}
	/**
	 * Returns if its a 3D rendering.
	 * 
	 * @return
	 */
	public final boolean isDimension3D( )
	{
		return ( getModel( ).getDimension( ) == ChartDimension.THREE_DIMENSIONAL_LITERAL );
	}