(declare (special max-x min-x max-y min-y size-x size-y max-xf min-xf
		  max-yf min-yf size-xf size-yf scale-x scale-y tty-graphics
		  dsk-graphics $fasldisp)
	 (fixnum x y ox oy)
	 (fixnum filen ptr (fixin) (binfilen) (mfixin) (access fixnum)
		 max-x min-x max-y min-y size-x size-y temp)
	 (flonum max-xf min-xf max-yf min-yf size-xf size-yf scale-x scale-y
		 dist rad)
	 (notype (setpoint fixnum fixnum) (vector fixnum fixnum) ($entergraph)
		 ($screensize fixnum fixnum fixnum fixnum) ($exitgraph)))

(declare (eval (read)))
(setq ibase 8.)

(defun $worldplot (llong hlong llat hlat)
       (or (get '$plotmode 'mfexpr*s) (loadfile '(tekplt fasl dsk share) t $fasldisp))
       (or (get 'directory 'lsubr) (loadfile '(allfiles fasl com) t $fasldisp))
       ((lambda (rad dist temp)
		(setq rad (//$ (atan 0 -1) 180.0)
		      dist (cos (*$ rad (//$ (+$ (float hlat) (float llat)) 2.0)))
		      rad (//$ (float 400000) 180.0)
		      max-xf (*$ (float hlong) rad)
		      min-xf (*$ (float llong) rad)
		      size-xf (-$ max-xf min-xf)
		      max-yf (*$ (float hlat) rad)
		      min-yf (*$ (float llat) rad)
		      size-yf (-$ max-yf min-yf))
		(cond (dsk-graphics ($screensize 0. 5. 1023. 790.))
		      ((eq tty-graphics 'imlac) ($screensize 0. 0. 1023. 1023.))
		      ((eq tty-graphics 'tek) ($screensize 0. 5. 1023. 789.))
		      (t ($screensize 0. 0. 1023. 1023.)))
		(cond ((> (//$ (*$ size-xf dist) (float size-x))
			  (//$ size-yf (float size-y)))
		       (setq temp (fix (*$ size-yf (float size-x)
					   (//$ (*$ size-xf dist)))))
		       ($screensize min-x
				   (// (- (+ min-y max-y) temp) 2.)
				   max-x
				   (// (+ (+ min-y max-y) temp) 2.)))
		      (t (setq temp (fix (*$ size-xf dist (float size-y)
					     (//$ size-yf))))
			 ($screensize (// (- (+ min-x max-x) temp) 2.)
				     min-y
				     (// (+ (+ min-x max-x) temp) 2.)
				     max-y))))
	0.0 0.0 0)
       ($entergraph)
       (do ((files '(((dsk maxdmp) world geogra) ((dsk maxdmp) world politi))
		   (cdr files))
	    (file nil (close file))
            (filen))
	   ((null files) ($exitgraph) '$done)
	   (setq file (open (car files) '(in fixnum)))
    	   (setq filen (caddar (directory (list file) '(words))))
	   (in file)
	   (do nil ((not (> filen (filepos file))))
	       (do ((first t nil)
		    (x (in file) (in file))
		    (y 0.)
		    (ox -1.)
		    (oy -1.))
		   ((< x 0.))
		   (setq y (lsh x -18.)
			 x (boole 1. x 777777))
		   (cond ((> x 377777) (setq x (- x 1000000))))
		   (cond ((> y 177777) (setq y (- y 400000))))
		   (setq x (+ min-x (fix (+$ 0.5 (//$ (-$ (float x) min-xf) scale-x))))
			 y (+ min-y (fix (+$ 0.5 (//$ (-$ (float y) min-yf) scale-y)))))
		   (cond ((and (not first)
			       (> (abs (- ox x)) 1000))
			  (filepos file (1- (filepos file)))
			  (return nil)))
		   (cond (first (setpoint x y))
			 ((not (and (= x ox) (= y oy)))
			  (vector x y)))
		   (setq ox x oy y)))))
(declare (eval (read)))
(setq ibase 10.)