import java.io.*;

class qbezier {

  public static void main(String[] args) {  
    if(args.length != 6) {
      System.out.println("Gebrauch: java qbezier x1 y1 m1 x2 y2 m2");
      return;
    }
    File outfile = new File("qbezier.tex");
    try {
      double x1 = Double.parseDouble(args[0]);
      double y1 = Double.parseDouble(args[1]);
      double m1 = Double.parseDouble(args[2]);
      double x2 = Double.parseDouble(args[3]);
      double y2 = Double.parseDouble(args[4]);
      double m2 = Double.parseDouble(args[5]);
      if(m1 == m2) {
        System.out.println("Keine Auswertung möglich:");
        System.out.println("m1 und m2 müssen verschieden sein");      
        return;
      }
      String outstring = "% qbezier P1=("+x1+"/"+y1+") m1="+m1+" P2=("+x2+"/"+y2+") m2="+m2;
      outstring += "\n\\qbezier";
      double x = (m2*x2-m1*x1+y1-y2) / (m2-m1);
      double u = y1+m1*(x-x1);
      double v = y2+m2*(x-x2);
      double y = 0.5*(u+v);      
      outstring += "(" + runde(x1) + ", " + runde(y1) + ")";
      outstring += "(" + runde(x)  + ", " + runde(y)  + ")";
      outstring += "(" + runde(x2) + ", " + runde(y2) + ")";       
      FileWriter out = new FileWriter(outfile.getPath(), false);
      out.write(outstring); 
      out.close();    
    }
    catch(NumberFormatException e) {
      System.out.println("Eingabe nicht korrekt");
      System.out.println("Korrekte Eingabe: x1 y1 m1 x2 y2 m2");
    }
    catch(IOException e) {
    }      
  }  

  public static String runde(double t) {
    String s = "";
    int T = (int)(Math.round(10000 * t));
    double d = T/10000.0;
    s = String.valueOf(d);
    return s;
  }  
}