Bug 212291 SWT Chart render engine always uses 96 DPI(Display) resolution
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderHelper.java
{
		/**
		 * Initializes when rendering an axes
		 * 
		 * @throws ChartException
		 */
		void initialize( ) throws ChartException;
		/**
		 * Last method of rendering an axes
		 * 
		 * @throws ChartException
		 */
		void close( ) throws ChartException;
		/**
		 * Handles computation before rendering each axes tick