geomconst.java

来自「用Java开发的、实现类似Visio功能的应用程序源码」· Java 代码 · 共 61 行

/**
 *    $Id:GeomConst.java $
 *
 *    Copyright 2004 ~ 2005  JingFei International Cooperation LTD. All rights reserved. *
 */
package com.jfimagine.jfgraph.geom;


/**
 *  Geom Const class is a const definition list of geometries.
 *
 * @author     CookieMaker    
 *
 * @version $Revision: 1.00 $
 */  
public class GeomConst{
        
        /** an original pick offset */
	private static int PICK_OFFSET_ORIGINAL	=6;  //in pixels
	      
       /**
    	*   An offset for analog shape/object pick.
    	*   If you want to pick an object, we should give you an offset,
    	*   so you can analogic pick that object.
        */
	public static int	 PICK_OFFSET		=PICK_OFFSET_ORIGINAL; 
	
       /**
    	*   set zoom for some constant values.
    	*   When zoom in objects, we will 'reduce' the pick_offset,
    	*   for more accurately picking objects.
        */
        public static  void setZoom(double zoomScale){
		if (zoomScale<=1.0){
			PICK_OFFSET	=PICK_OFFSET_ORIGINAL;
		}else{
			PICK_OFFSET	=(int)(PICK_OFFSET_ORIGINAL/zoomScale);
			if (PICK_OFFSET<1)
				PICK_OFFSET	=1;
		}
	}



       /**
    	*   width/height of a node rectangle, or a port diagonal.
        */
	public static final int	 NODE_SIZE		=6;  //in pixels

       /**
    	*   minimum line length
        */
	public static final int	 MIN_LINELENGTH		=4;  //in pixels

   	/**
    	*  A double const represents a very large value.
    	*/
    	public static final double LARGE_VALUE		=10E10;

	
}