// draw_post.java  calls to generate a .ps  postscript file
// draw_post1  first call for setup output file
// draw_post99 last call to finish output file 
// draw_post2  to draw line
// draw_post3  to draw arc or circle
// draw_post4  to draw text

import java.io.*;
import java.util.*;
import java.text.*;

public strictfp class draw_post
{
  PrintWriter file_out;
  String filename;

  public void draw_post1(String filename)
  {
    // open for write
    System.out.println("drawpost writing "+filename);
    try
    {
      this.filename = filename;
      FileWriter fout = new FileWriter(filename);
      BufferedWriter b_fout = new BufferedWriter(fout);
      file_out = new PrintWriter(b_fout);

      file_out.print("%%!PS-Adobe-1.0\n");
      file_out.print("/bdef {bind def} bind def \n");
      file_out.print("/ldef {load def} bdef \n");
      file_out.print("/n /newpath ldef \n");
      file_out.print("/c /closepath ldef \n");
      file_out.print("/l /lineto ldef \n");
      file_out.print("/m /moveto ldef \n");
      file_out.print("/s /setgray ldef \n");
      file_out.print("/f /fill ldef \n");
      file_out.print("/st /stroke ldef \n");
      file_out.print("/sw /setlinewidth ldef \n");
      file_out.print("newpath\n");
      file_out.print("/Courier findfont\n");
      file_out.print("12 scalefont setfont\n");
      file_out.print(" 50 750 moveto (from "+filename+") show\n");
      file_out.print("stroke\n");
    }
    catch(FileNotFoundException exception)
    {
      System.out.println(filename+" not found");
    }
    catch(Exception exception) // catches all exceptions
    {
      System.out.println("draw_post  exception");
    }
  } // end draw_post1

  // draw line, thick=0.5 for thin, =1.0 for normal, =2.0 for thick
  public void draw_post2(Double x1, Double y1, Double x2,
                         Double y2, Double thick)
  {
    
    file_out.print(thick+" setlinewidth\n");
    file_out.print("newpath\n");
    file_out.print(x1+" "+y1+" moveto\n");
    file_out.print(x2+" "+y2+" lineto\n");
    file_out.print("stroke\n");

    // fprintf(PSU,"%4.2f sw n %6.2f %6.2f m %6.2f %6.2f l st\n",
    //         thick, x1, y1, x2, y2);
  } // end draw_post2

  // draw arc center x1,y1  from x2,y2 
  public void draw_post3(Double x1, Double y1, Double x2, Double y2,
                         Double radius, Double ang1, Double ang2, Double thick)
  {
      // 1.00 setlinewidth
      // newpath
      // 98.00 636.00 moveto
      // 90.00 636.00   7.00 0 360 arc
      // stroke
    file_out.print(thick+" setlinewidth\n");
    file_out.print("newpath\n");
    file_out.print(x1+" "+y1+" moveto\n");
    file_out.print(x2+" "+y2+" "+radius+" "+ang1+" "+ang2+" arc\n");
    file_out.print("stroke\n");
  } // end draw_post3

  // draw text from x1,y1  string  font_size 
    public void draw_post4(Double x1, Double y1, String txt, Double fsize)
  {
      // newpath
      // /Courier findfont
      // 12.00 scalefont setfont
      // 178.00 331.00 moveto (equal6) show
    file_out.print("newpath\n");
    file_out.print("/Courier findfont\n");
    file_out.print(fsize+" scalefont setfont\n");
    file_out.print(x1+" "+y1+" moveto ("+txt+") show\n");
    file_out.print("stroke\n");
  } // end draw_post4


  // finish out file plotout.ps */
  public void draw_post99()
  {
    file_out.print("showpage\n");
    file_out.close();
    System.out.println("finished writing "+filename);
  } /* end draw_post99 */

} // end draw_post.java