buildgraph.java

java 作图的程序

                 return array;






                }
                
  /**
   * @return <i>true</i> if the build was successful
   */
      protected boolean buildAxis() {
           Stack attach = new Stack();
           NamedObject nobj;
           Axis axis = new Axis();
           NamedObject naxis = new NamedObject(axis,AXIS);
           int angle = 0;
           
           while( true ) {
              nobj = (NamedObject)(object.pop());
              
              debugMessage("Axis",nobj.id);
              
              switch (nobj.id) {
              
              case NAME:
                          naxis.setName((String)(nobj.getObject()));
                          break;
	      case TITLE:
                          axis.title = (RTextLine)(nobj.getObject());
                          break;
              case LABEL_FONT:
                          axis.label.setFont((Font)(nobj.getObject()));
                          break;
              case LABEL_COLOR:
                          axis.label.setColor((Color)(nobj.getObject()));
                          break;
              case BOTTOM:
                          axis.setPosition(Axis.BOTTOM);
                          break;
              case TOP:
                          axis.setPosition(Axis.TOP);
                          break;
              case LEFT:
                          axis.setPosition(Axis.LEFT);
                          angle = 90;
                          break;
              case RIGHT:
                          axis.setPosition(Axis.RIGHT);
                          angle = -90;
                          break;
              case ATTACH:
                          attach.push(new NamedObject(axis,
                                      (String)(nobj.getObject()),ATTACH));
                          break;
              case BEGIN:
                          axis.g2d = (Graph2D)graph;
                          axis.setTitleRotation(angle);
                          object.push(naxis);
                          while(attach.size() > 0) {
                              object.push(attach.pop());
                          }
                          built.addElement(axis);
                          applet.showStatus("BuildGraph: Built Axis!");
                          return true;
                          
               default:
                          errorAtLine("Incorrect keyword in Data specification");
                          return false;
              }
          }
      }
  /**
   * @return <i>true</i> if the build was successful
   */
      protected boolean buildGrid() {
           NamedObject nobj;
           NamedObject color = null;
           NamedObject grid  = null;
           
           
           while( true ) {
              nobj = (NamedObject)(object.pop());

              debugMessage("Grid",nobj.id);              
              
              switch (nobj.id) {
              
              case OFF:
             	          grid = nobj;
             	          grid.setId(GRID_OFF);
                          break;
              case ON:
             	          grid = nobj;
             	          grid.setId(GRID_ON);
                          break;
              case COLOR:
                          color = nobj;   
                          color.setId(GRID_COLOR);
                          break;
              case BEGIN:
                          if(grid != null) object.push(grid);
                          if(color != null) object.push(color);
                          return true;
                          
               default:
                          errorAtLine("Incorrect keyword in Grid specification");
                          return false;
              }
          }
      }
  /**
   * @return <i>true</i> if the build was successful
   */   
      protected boolean buildZero() {
           NamedObject nobj;
           NamedObject color = null;
           NamedObject zero  = null;
           
           
           while( true ) {
              nobj = (NamedObject)(object.pop());

              debugMessage("Zero",nobj.id);              
              
              switch (nobj.id) {
              
              case OFF:
             	          zero = nobj;
             	          zero.setId(ZERO_OFF);
                          break;
              case ON:
             	          zero = nobj;
             	          zero.setId(ZERO_ON);
                          break;
              case COLOR:
                          color = nobj;   
                          color.setId(ZERO_COLOR);
                          break;
              case BEGIN:
                          if(zero != null)  object.push(zero);
                          if(color != null) object.push(color);
                          return true;
                          
               default:
                          errorAtLine("Incorrect keyword in Zero specification");
                          return false;
              }
          }
      }

  /**
   * output the parsed error message with the line number of the line
   * that triggered the error.
   * @param s Message to ouput
   */

        private void errorAtLine(String s) {
              System.out.println("Error at line "+lineno+": "+s);
              applet.showStatus("Error at line "+lineno+": "+s);
	    }
  /**
   * output the parsed debug message, appending line number, and token string
   * @param s Message to ouput
   * @param token token to be replaced with a string
   */

        private void debugMessage(String s, int token) {
              String st = null;

              if(!debug) return;

             switch ( token ) {
             case DEBUG:
                           st = null;
                           break;
             case G2DINT:
                           st = "G2DINT";
                           break;
             case GRAPH2D:
                           st = "GRAPH2D";
                           break;
             case CONTOUR:
                           st = "CONTOUR";
                           break;
             case TT_EOF:
                           st = null;
                           break;
	     case TT_EOL:
                           st = null;
                           break;
             case URL:
                           st = "URL";
                           break;
             case ATTACH:
                           st = "ATTACH";
                           break;
             case STYLE:
                           st = "STYLE";
                           break;
             case SIZE:
                           st = "SIZE";
                           break;
             case COLOR:
                           st = "COLOR";
                           break;
             case NAME:
                           st = "NAME";
                            break;
             case BEGIN:
                           st = "BEGIN";
                           break;
             case END:
                           st = "END";
                           break;
	     case MARKER:
                           st = "MARKER";
                           break;
	     case AXIS:
                           st = "AXIS";
                           break;
	     case TITLE:
                           st = "TITLE";
                           break;
	     case DATA:
                           st = "DATA";
                           break;
	     case LABEL:
                           st = "LABEL";
                           break;
	     case FONT:
                           st = "FONT";
                           break;
	     case BOTTOM:
                           st = "BOTTOM";
                           break;
	     case TOP:
                           st = "TOP";
                           break;
	     case LEFT:
                           st = "LEFT";
                           break;
	     case RIGHT:
                           st = "RIGHT";
                           break;
	     case ON:
                           st = "ON";
                           break;
	     case OFF:
                           st = "OFF";
                           break;
	     case PLAIN:
                           st = "PLAIN";
                           break;
	     case BOLD:
                           st = "BOLD";
                           break;
	     case ITALIC:
                           st = "ITALIC";
                           break;
	     case MARKER_STYLE:
                           st = "MARKER_STYLE";
                           break;
	     case MARKER_COLOR:
                           st = "MARKER_COLOR";
                           break;
	     case  MARKER_SIZE:
                           st = "MARKER_SIZE";
                           break;
	     case LABEL_COLOR:
                           st = "LABEL_COLOR";
                           break;
	     case LABEL_FONT:
                           st = "LABEL_FONT";
                           break;
	     case GRID_COLOR:
                           st = "GRID_COLOR";
                           break;
	     case GRID:
                           st = "GRID";
                           break;
	     case GRID_OFF:
                           st = "GRID_OFF";
                           break;
	     case GRID_ON:
                           st = "GRID_ON";
                           break;
	     case ZERO_COLOR:
                           st = "ZERO_COLOR";
                           break;
	     case ZERO:
                           st = "ZERO";
                           break;
	     case ZERO_OFF:
                           st = "ZERO_OFF";
                           break;
	     case ZERO_ON:
                           st = "ZERO_ON";
                           break;
	     case MARKER_URL:
                           st = "MARKER_URL";
                           break;
             case FUNCTION:
                           st = "FUNCTION";
                           break;
             case XRANGE:
                           st = "XRANGE";
                           break;
             case YRANGE:
                           st = "YRANGE";
                           break;
             case NUMBER:
                           st = "NUMBER";
                           break;
             case SQUARE:
                           st = "SQUARE";
                           break;
             case BACKGROUND:
                           st = "BACKGROUND";
                           break;

	     default:
                           st = "UNKNOWN";
                           break;
	     }




              if(st != null) System.out.println("("+lineno+") "+s+": "+st);
	    }



}


/**
 * this is a structure class used exclusively BuildGraph.
 * the class contains an Object variable, a String name identifying the object,
 * and/or  an integer token identifying the object.
 *
 */


class NamedObject extends Object {
      protected Object o = null;
      protected String s = null;
      protected int id   = ScanWord.UNKNOWN;

      public NamedObject() {
      }
    
      public NamedObject(Object o) {
              this.o = o;
      }

      public NamedObject(Object o, String s) {
              this.o = o;
              this.s = s;
      }

      public NamedObject(Object o, String s, int id) {
              this.o = o;
              this.s = s;
              this.id = id;
	    }
      public NamedObject(Object o, int id) {
              this.o = o;
              this.id = id;
      }

      public NamedObject(int id) {
              this.id = id;
      }

      public NamedObject(String s) {
              this.s = s;
      }
      
      public Object getObject() { return o; }
      public String getName() { return s; }
      public int getId() { return id; }
      
      public void setObject(Object o) {
           this.o = o;
      }
      
      public void setId(int id) {
           this.id = id;
      }

      public void setName(String s) {
           this.s = s;
      }

      public boolean equals(Object obj) {

           if(obj instanceof NamedObject) {
                NamedObject nobj = (NamedObject)obj;
                if( nobj.s == null && s != null ||
                    nobj.s != null && s == null ||
                    nobj.id != this.id ||
                    !nobj.s.equals(s) ) return  false;
                if( nobj.o.equals(o) ) return true;
	      }

            return false;
	 }
 }