package?drawables;

import?java.awt.*;
import?java.io.*;
import?util.*;

/**
?*?Basic?class?for?drawable?primitives.
?*
?*?@version	3.41	20.08.2003	layers?become?byte?use?of?MBR?improved?Rect?removed
?*?@version	3.40	05.10.2002	interface?SpatialSearchTreeEntry?removed
?*?@version	3.30	20.02.2002	data?output?streams?toString?added
?*?@version	3.20	03.07.2001	getContainer?added
?*?@version	3.10	25.08.2000	writeGML?added
?*?@version	3.00	27.06.2000	implementation?of?spatial?search?tree?objects?support?of?presenation?modes?linked?primitives
?*?@version	2.50	09.04.2000	intersects?for?drawable?primitives?added
?*?@version	2.40	26.03.2000	contains?isContainedBy?added;?intersects?renamed
?*?@version	2.30	31.01.2000	getobject?isVisible?computeDistance?setMBR?added
?*?@version	2.20	10.10.1999	write?writeCoord?added
?*?@version	2.10	14.08.1999	lazy?loading?of?geometry
?*?@version	2.00	14.03.1999	changed?from?interface?to?class
?*?@author?Thomas?Brinkhoff
?*/

public?abstract?class?Drawable?implements?Serializable?EntryReadable?{

	/**
	?*?Standard?layer?for?areal?primitives.
	?*/
	public?static?final?byte?AREAlayer?=?0;
	/**
	?*?Standard?layer?for?line?primitives.
	?*/
	public?static?final?byte?LINElayer?=?1;
	/**
	?*?Standard?layer?for?point?primitives.
	?*/
	public?static?final?byte?POINTlayer?=?2;
	/**
	?*?Standard?layer?for?text?primitives.
	?*/
	public?static?final?byte?TEXTlayer?=?3;
	/**
	?*?Standard?layer?for?（not?scalable）?bitmaps.
	?*/
	public?static?final?byte?BITMAPlayer?=?4;
	/**
	?*?Default?for?the?least?detailed?scale.
	?*/
	public?static?final?int?DEFMINSCALE?=?Integer.MAX_VALUE;?
	/**
	?*?Default?for?the?most?detailed?scale.
	?*/
	public?static?final?int?DEFMAXSCALE?=?0;?

	/**
	?*?The?minimum?bounding?rectangle.
	?*/
	protected?Rectangle?mbr?=?null;
	/**
	?*?The?least?detailed?scale?for?drawing.
	?*/
	protected?int?minScale?=?DEFMINSCALE;?
	/**
	?*?The?most?detailed?scale?for?drawing.
	?*/
	protected?int?maxScale?=?DEFMAXSCALE;?
	/**
	?*?layer.
	?*/
	protected?byte?layer?=?LINElayer;?
	/**
	?*?Is?the?primitive?selected?
	?*/
	protected?boolean?selected?=?false;
	/**
	?*?The?corresponding?presentation?object.
	?*/
	protected?DrawablePresentation?pres?=?null;
	/**
	?*?The?corresponding?drawable?object.
	?*/
	protected?Drawableobject?obj?=?null;
	/**
	?*?Container?of?the?primitive.
	?*/
	protected?Drawableobjects?container?=?null;
	/**
	?*?Next?primitive?of?the?same?layer.
	?*/
	protected?Drawable?nextOflayer?=?null;

/**
?*?Computes?the?distance?between?two?points.
?*?@return?distance
?*?@param?x1?x-coordinate?of?the?1st?point
?*?@param?y1?y-coordinate?of?the?1st?point
?*?@param?x2?x-coordinate?of?the?2nd?point
?*?@param?y2?y-coordinate?of?the?2nd?point
?*/
public?static?double?computeDistance?（int?x1?int?y1?int?x2?int?y2）?{
	long?xDist?=?Math.abs（x1-x2）;
	long?yDist?=?Math.abs（y1-y2）;
	return?Math.sqrt（xDist*xDist?+?yDist*yDi

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-10-25?10:33??CompleteSource21\
?????文件?????????394??2016-09-26?11:54??CompleteSource21\.classpath
?????文件???????10244??2016-10-18?10:38??CompleteSource21\.DS_Store
?????目錄???????????0??2016-10-28?10:37??__MACOSX\
?????目錄???????????0??2016-10-28?10:37??__MACOSX\CompleteSource21\
?????文件?????????120??2016-10-18?10:38??__MACOSX\CompleteSource21\._.DS_Store
?????文件??????211050??2016-06-05?08:17??CompleteSource21\.edge
?????文件??????109890??2016-06-05?08:17??CompleteSource21\.node
?????文件?????????387??2005-02-14?15:23??CompleteSource21\.project
?????目錄???????????0??2016-10-06?08:11??CompleteSource21\.settings\
?????文件????????4021??2016-09-26?11:54??CompleteSource21\.settings\org.eclipse.jdt.core.prefs
?????文件??????231797??2016-10-25?10:33??CompleteSource21\data_edge.txt
?????文件??????112316??2016-10-25?10:33??CompleteSource21\data_node.txt
?????目錄???????????0??2016-10-20?19:13??CompleteSource21\drawables\
?????文件????????6148??2016-09-22?16:22??CompleteSource21\drawables\.DS_Store
?????目錄???????????0??2016-10-28?10:37??__MACOSX\CompleteSource21\drawables\
?????文件?????????120??2016-09-22?16:22??__MACOSX\CompleteSource21\drawables\._.DS_Store
?????文件????????9661??2016-10-20?19:13??CompleteSource21\drawables\Drawable.class
?????文件???????14752??2003-08-20?16:51??CompleteSource21\drawables\Drawable.java
?????文件????????3662??2016-10-20?19:13??CompleteSource21\drawables\DrawableBitmap.class
?????文件????????4647??2003-08-12?13:39??CompleteSource21\drawables\DrawableBitmap.java
?????文件????????3551??2016-10-20?19:13??CompleteSource21\drawables\DrawableCircle.class
?????文件????????4065??2003-08-12?13:39??CompleteSource21\drawables\DrawableCircle.java
?????文件????????7942??2016-10-20?19:13??CompleteSource21\drawables\DrawableLine.class
?????文件???????11877??2003-08-19?19:55??CompleteSource21\drawables\DrawableLine.java
?????文件????????6399??2016-10-20?19:13??CompleteSource21\drawables\Drawableobject.class
?????文件????????8773??2003-09-03?20:11??CompleteSource21\drawables\Drawableobject.java
?????文件????????8760??2016-10-20?19:13??CompleteSource21\drawables\Drawableobjects.class
?????文件???????14266??2003-08-19?19:28??CompleteSource21\drawables\Drawableobjects.java
?????文件????????5460??2016-10-20?19:13??CompleteSource21\drawables\DrawableobjectsWithSearchTree.class
?????文件????????6859??2003-08-16?13:28??CompleteSource21\drawables\DrawableobjectsWithSearchTree.java
............此處省略217個文件信息