(FILECREATED "31-MAY-82 13:33:07" {PHYLUM}<LISPCORE>DEMO>PEANO.;5
 2738   

     changes to:  PEANOCOMS PEANOSCALE PLOT PEANOSTEP PEANODEMO PEANO1

     previous date: "31-MAY-82 11:29:44" {PHYLUM}<LISPCORE>DEMO>PEANO.;1)


(* Copyright (c) 1982 by Xerox Corporation)

(PRETTYCOMPRINT PEANOCOMS)

(RPAQQ PEANOCOMS
 ((FNS PEANODEMO PEANOROTATE PEANO1 PEANOSTEP)
		  (MACROS PLOT)
		  (GLOBALVARS XNOW YNOW ORIENT PEANOSCALE PEANOWINDOW)
		  (VARS PEANOSCALE (PEANOWINDOW NIL))))
(DEFINEQ

(PEANODEMO

  [LAMBDA (LEVEL SCALE)                                      (* rrb "31-MAY-82 12:16")

    (OR LEVEL (SETQ LEVEL 7))
    (COND
      (SCALE (SETQ PEANOSCALE (FIX SCALE)))
      ((FIXP PEANOSCALE))
      (T (SETQ PEANOSCALE 3)))
    (PROGN [COND
	     ((TYPENAMEP PEANOWINDOW (QUOTE WINDOW)))
	     (T (SETQ PEANOWINDOW
		  (CREATEW (create
 REGION
				   LEFT _ 624
				   BOTTOM _ 402
				   WIDTH _ 396
				   HEIGHT _ 406)
			   "Peano curves"]
	   (CLEARW PEANOWINDOW)
	   (MOVETO PEANOSCALE PEANOSCALE PEANOWINDOW))
    (SETQ XNOW 1)
    (SETQ YNOW 1)
    (SETQ ORIENT 0)
    (PEANO1
 LEVEL 1])

(PEANOROTATE

  [LAMBDA (DIRECTION)                                        (* bas: "30-APR-82 19:29")

    (add
 ORIENT DIRECTION)
    (COND
      ((IGREATERP ORIENT 3)
	(SETQ ORIENT (IDIFFERENCE ORIENT 4)))
      ((ILESSP ORIENT 0)
	(SETQ ORIENT (IPLUS ORIENT 4])

(PEANO1

  [LAMBDA (LEVEL HAND)                                       (* rrb "31-MAY-82 13:17")

    (COND
      ((EQ LEVEL 1)
	(PLOT))
      (T (SETQ LEVEL (SUB1 LEVEL))
	 (PEANOROTATE
 HAND)
	 (PEANO1
 LEVEL (IMINUS HAND))
	 (PEANOSTEP
)
	 (PLOT)
	 (PEANOSTEP
)
	 (PEANOROTATE
 (IMINUS HAND))
	 (PEANO1
 LEVEL HAND)
	 (PEANOSTEP
)
	 (PLOT)
	 (PEANOSTEP
)
	 (PEANO1
 LEVEL HAND)
	 (PEANOROTATE
 (IMINUS HAND))
	 (PEANOSTEP
)
	 (PLOT)
	 (PEANOSTEP
)
	 (PEANO1
 LEVEL (IMINUS HAND))
	 (PEANOROTATE
 HAND)
	 (BLOCK])

(PEANOSTEP

  [LAMBDA NIL                                                (* rrb "31-MAY-82 11:31")

    (SELECTQ ORIENT
	     (0 (SETQ XNOW (ADD1 XNOW)))
	     (1 (SETQ YNOW (ADD1 YNOW)))
	     (2 (SETQ XNOW (SUB1 XNOW)))
	     (3 (SETQ YNOW (SUB1 YNOW)))
	     (ERROR "Step: strange direction" ORIENT))
    (MOVETO (ITIMES XNOW PEANOSCALE)
	    (ITIMES YNOW PEANOSCALE)
	    PEANOWINDOW])
)
(DECLARE: EVAL@COMPILE 

(PUTPROPS PLOT MACRO
 (NIL (RELDRAWTO PEANOSCALE 0 PEANOSCALE (QUOTE REPLACE)
				     PEANOWINDOW)))
)
(DECLARE: DOEVAL@COMPILE DONTCOPY

(ADDTOVAR GLOBALVARS XNOW YNOW ORIENT PEANOSCALE PEANOWINDOW)
)

(RPAQQ PEANOSCALE
 3)

(RPAQQ PEANOWINDOW
 NIL)
(DECLARE: DONTCOPY (PUTPROPS PEANO COPYRIGHT ("Xerox Corporation" 1982)))
(DECLARE: DONTCOPY
  (FILEMAP (NIL (484 2356 (PEANODEMO 494 . 1118) (PEANOROTATE 1120 . 1393) (PEANO1 1395 . 1957) (
PEANOSTEP 1959 . 2354)))))
STOP