map.java

实现了对GUM类型的图像的放大缩小漫游的功能

						tempCoordinate1.Y=tempCoordinate.Y=StringToDouble(ReadString(in));
						tempRing.V_coordinate.addElement(tempCoordinate);
						
						if(!tag){tag=true;
						tempPolygon.m_rectangle.x1=tempPolygon.m_rectangle.x2=tempCoordinate.X;
						tempPolygon.m_rectangle.y1=tempPolygon.m_rectangle.y2=tempCoordinate.Y;}// first read
						
						for(int j=1;j<tempRing.m_borders;j++)
						{
							tempCoordinate=new coordinate();
							tempCoordinate.X=StringToDouble(ReadString(in));
							tempCoordinate.Y=StringToDouble(ReadString(in));
							tempRing.V_coordinate.addElement(tempCoordinate);
							tempAcreage+=(tempCoordinate1.Y+tempCoordinate.Y)*(tempCoordinate.X-tempCoordinate1.X)/2;
							tempCoordinate1.X = tempCoordinate.X;
							tempCoordinate1.Y = tempCoordinate.Y;
							tempPolygon.m_rectangle.x1 = (tempCoordinate.X<tempPolygon.m_rectangle.x1)?tempCoordinate.X:tempPolygon.m_rectangle.x1;
							tempPolygon.m_rectangle.y1 = (tempCoordinate.Y>tempPolygon.m_rectangle.y1)?tempCoordinate.Y:tempPolygon.m_rectangle.y1;
							tempPolygon.m_rectangle.x2 = (tempCoordinate.X>tempPolygon.m_rectangle.x2)?tempCoordinate.X:tempPolygon.m_rectangle.x2;
							tempPolygon.m_rectangle.y2 = (tempCoordinate.Y<tempPolygon.m_rectangle.y2)?tempCoordinate.Y:tempPolygon.m_rectangle.y2;
						}
						tempPolygon.V_guRing.addElement(tempRing);
						tempPolygon.m_acreage+=Math.abs(tempAcreage);
						
					}
					while(!ReadString(in).equals("InnerNode"));
					tempPolygon.m_innerNode =new coordinate();
					tempPolygon.m_innerNode.X=StringToDouble(ReadString(in));
					tempPolygon.m_innerNode.Y=StringToDouble(ReadString(in));
					while(!ReadString(in).equals("EntityType"));
					tempPolygon.m_name=ReadString(in);
					while(!ReadString(in).equals("AttributeValue"));
					tempPolygon.m_attribute = in.readLine();
					V_guPolygon.addElement(tempPolygon);
					
				}
				
				else if(temp.equals("GuAnnotation"))
				{
					guAnnotation tempGuAnnotation=new guAnnotation();
					while(!ReadString(in).equals("AnnoType"));
					tempGuAnnotation.m_annoType = StringToInt(ReadString(in));
					while(!ReadString(in).equals("Position"));
					if(tempGuAnnotation.m_annoType==1)
					{
						while(!ReadString(in).equals("BeginNode"));
						tempGuAnnotation.m_beginNode = new coordinate();
						tempGuAnnotation.m_beginNode.X=StringToDouble(ReadString(in));
						tempGuAnnotation.m_beginNode.Y=StringToDouble(ReadString(in));
						
						while(!ReadString(in).equals("Angle"));
						tempGuAnnotation.m_angle =StringToInt(ReadString(in));
					}
					else
					{
						while(!ReadString(in).equals("BeginNode"));
						tempGuAnnotation.m_beginNode =new coordinate();
						tempGuAnnotation.m_beginNode.X=StringToDouble(ReadString(in));
						tempGuAnnotation.m_beginNode.Y=StringToDouble(ReadString(in));
						
						while(!ReadString(in).equals("EndNode"));
						tempGuAnnotation.m_endNode =new coordinate();
						tempGuAnnotation.m_endNode.X=StringToDouble(ReadString(in));
						tempGuAnnotation.m_endNode.Y=StringToDouble(ReadString(in));
					}
					while(!ReadString(in).equals("Text"));	
					tempGuAnnotation.m_text =ReadString(in);
					
					while(!ReadString(in).equals("EntityType"));	
					tempGuAnnotation.m_name =ReadString(in);
					
					while(!ReadString(in).equals("AttributeValue"));
					tempGuAnnotation.m_attribute = in.readLine();
					V_guAnnotation.addElement(tempGuAnnotation);
					
					
					
				}
				else if(temp.equals("GuImage"))
				{
					//add read image here
				}
				
			}
			
			S_guNode    = new int[V_guNode.size()+1];
			S_guNode[0]=-1;
			S_guLine    = new int[V_guLine.size()+1];
			S_guLine[0]=-1;
			S_guPolygon = new int[V_guPolygon.size()+1]; //+1是为了设置阀门
			S_guPolygon[0]=-1;
			
			//////////test code just for test if read file is OK
			//////////
			
			//while(!temp.equals("GuPolygon"))
				///  temp=ReadString(in);
		/*				System.out.println("MapName"+ m_mapName);
			System.out.println("MapScope");
			System.out.println("    UpLeft: "+ m_upLeft.X+" "+m_upLeft.Y);
			System.out.println("    LowRight:"+ m_lowRight.X+" "+m_lowRight.Y);
			System.out.println("MapScale"+m_mapScale);
			System.out.println("MapDescription"+m_mapDescription);
			System.out.println("");
			
			
			
			for(int j=0;j<V_entityType.size();j++)
			{
				entityType entity=(entityType)V_entityType.elementAt(j);
				System.out.println("    TypeName:  "+entity.m_name );
				System.out.println("AnnoFont");
				System.out.println("    FaceName:  "+entity.m_annoFont.faceName );
				System.out.println("    Width:     "+entity.m_annoFont.width);
				System.out.println("    Height:    "+entity.m_annoFont.height);
				System.out.println("GeometryDisplay");
				System.out.println("    Color:     "+entity.m_geometryDisplay.color);
				System.out.println("");
			}*/
			
		/*	for(int j=0;j<V_GuPolygon.size();j++)
			{
				guPolygon entity=(guPolygon)V_GuPolygon.elementAt(j);
				System.out.println("    TypeName:  "+entity.name);
				//System.out.println("AnnoFont");
				//System.out.println("    FaceName:  "+entity.Anno_Font.faceName);
				//System.out.println("    Width:     "+entity.Anno_Font.width);
				//System.out.println("    Height:    "+entity.Anno_Font.height);
				//System.out.println("GeometryDisplay");
				///System.out.println("    Color:     "+entity.Geometry_Display.color);
				System.out.println("");
			}	*/	
			
			
			
			
			
			
				
				  
				  
			in.close();				
		}
		catch (BadFileException e)
		{
			throw e;
		}
		catch (IOException e){
           System.out.println("File access error: "+e);
		   throw new BadFileException("Not Gum Format File");
        }

	};
	
	private String ReadString(BufferedReader in) throws BadFileException{
		StringBuffer readstr=new StringBuffer();   
		readstr.setLength(30);            //初始化长度为30
		try{	
			char temp=(char)in.read();
			while(temp==' ' || temp=='\r' ||temp=='\n')
				temp=(char)in.read();
			int i=0;
			while (temp != ' ' && temp!='\r' && temp!='\n')
			{
				if(i<30)
					readstr.setCharAt(i,temp);
				else
					readstr.append(temp);
				temp = (char)in.read();
				if(temp==(char)(-1))
					throw new BadFileException("Not Gum Format File");//如果读到文件尾则不是GUM文件
				i++;
			}
			return readstr.toString().trim();
		 }
		catch(Exception e)
		{
			throw new BadFileException("Not Gum Format File");
		}	
    }

	
	
	private int StringToInt(String in)
	{
		int total=0;
		int i=0;
		int sign =1;
		if(in.substring(0,1).equals("-"))
		{
			i++;
			sign=-1;
		}
			
		for(;i<in.length();i++)
		{
			total=total*10+(in.charAt(i)-'0');
		}
		return total*sign;
	}
	
	private long StringToLong(String in)
	{
		long total=0;
		int i=0;
		int sign =1;
		if(in.substring(0,1).equals("-"))
		{
			i++;
			sign=-1;
		}
		for(;i<in.length();i++)
		{
			total=total*10+(in.charAt(i)-'0');
		}
		return total*sign;
	}
	
	private float StringToFloat(String in)
	{
		float total=0;
		int i=0;
		int sign =1;
		if(in.substring(0,1).equals("-"))
		{
			i++;
			sign=-1;
		}	
		for(;i<in.length();i++)
		{
			if(in.charAt(i)=='.')
				break;
			total=(float)total*10+(in.charAt(i)-'0');
		}
		int tens=1;
		for(int j=1;j<in.length()-i;j++)
		{
			tens*=10;
			total+=((float)(in.charAt(i+j)-'0'))/tens;
		}
		return total*sign;
	}
	
	private double StringToDouble(String in)
	{
		double total=0;
		int i=0;
		int sign =1;
		if(in.substring(0,1).equals("-"))
		{
			i++;
			sign=-1;
		}
	
		for(;i<in.length();i++)
		{
			if(in.charAt(i)=='.')
				break;
			total=(double)total*10+(in.charAt(i)-'0');
		}
		int tens=1;
		for(int j=1;j<in.length()-i;j++)
		{
			tens*=10;
			total+=((double)(in.charAt(i+j)-'0'))/tens;
		}
		
		
		return total*sign;
	}
	private boolean StringToBoolean(String in)
	{
		return in.equals("1")?true:false;
	}

}

class BadFileException extends Exception{
	public BadFileException(){}
	public BadFileException(String msg){super(msg);}
}