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MidpointObject.java

package rene.zirkel.objects;

// file: MidpointObject.java

import java.util.Enumeration;

import rene.util.xml.XmlWriter;
import rene.zirkel.*;
import rene.zirkel.construction.*;

public class MidpointObject extends PointObject
{     PointObject P1,P2;
      static Count N=new Count();
      
      public MidpointObject (Construction c, PointObject p1, PointObject p2)
      {     super(c,0,0);
            P1=p1; P2=p2;
            Moveable=false;
            validate();
            updateText();
      }

      public String getTag () { return "Midpoint"; }
      public int getN () { return N.next(); }
      
      public void updateText ()
      {     try
            {     setText(text2(Zirkel.name("text.midpoint"),P1.getName(),P2.getName()));
            }
            catch (Exception e) {}
      }
      public void validate ()
      {     if (!P1.valid() || !P2.valid()) Valid=false;
            else
            {     Valid=true;
                  X=(P1.getX()+P2.getX())/2;
                  Y=(P1.getY()+P2.getY())/2;
            }
      }
      public void printArgs (XmlWriter xml)
      {     xml.printArg("first",P1.getName());
            xml.printArg("second",P2.getName());
            printType(xml);
      }

      public Enumeration depending ()
      {     super.depending();
            DL.add(P1); DL.add(P2);
            return DL.elements();
      }

      public void translate ()
      {     P1=(PointObject)P1.getTranslation();
            P2=(PointObject)P2.getTranslation();
      }

}

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