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xjig(1)			    General Commands Manual		       xjig(1)

NAME
       xjig - the jigsaw puzzle

SYNOPSIS
       xjig <options>

DESCRIPTION
       XJig is a puzzle, that tries to replicate a jigsaw puzzle on the	screen
       as close	as possible. As	in every jigsaw	puzzle,	the goal is to set all
       the pieces together. If you like, you can watch the time	that you spent
       for it.

       Any  image-file in gif-format can be used as the	source for the puzzle,
       which is	then randomly created regarding	the sizes selected by the  op-
       tions.

       The control should be as	intuitive as possible in the way that you will
       usually	pull the freely	rotatable pieces at one	edge, drag them	to the
       desired destination and drop them so they  will	snap  together	easily
       when close to an	neighboured tile.

SPECIAL	EFFECTS
       Tiles  are freely formed	and rotatable with texture mapping routines to
       give the	appearance of a	real mess on the screen.

       Tiles snap together very	easy if	they are dropped  somewhere  close  to
       another matching	tile, when turned in the correct direction.

       Puzzles can be doubled sided so you might have to flip the tiles	to the
       correct side to let them	snap together.

       If  the	Xserver	 supports the Shape-Extension, the tiles can be	opened
       directly	on the desktop,	which is a pretty showcase,  but  you  need  a
       very  fast  machine for really getting this playable. (Any ideas	on how
       to add double buffering to the shaped-window approach of	the jigsaw are
       warmly welcome!)

CONTROLS
       The usual way to	move the pieces	on the screen should be	 to  drag  the
       piece  with  the	left mouse button to their destination by pulling them
       at on edge.  The	piece will automatically rotate	like if	 you  pull  or
       push them with your fingertip on	a table.

       In addition, the	following movements are	possible:

	 click left:	    rotate 90 degrees left
	 click right:	    rotate 90 degrees right
	 click middle:	    flip tile to backside
	 drag left:	    rotator drag (as mentionned	above)
	    +middle:	       pause rotator drag for a	straight drag
	 drag middle:	    straight drag
	    +left:	       pause drag for a	static rotation
	    +click left:       rotate 90 degrees left during drag
	    +click right:      rotate 90 degrees right during drag
	 CTRL+click left:   same as click middle

       The right button	has actually the same functionality as the middle but-
       ton  so	that  2	button systems shouldn't have problems.	Only the "drag
       middle+click right" move	will not work in that mode, and	 the  flipping
       has to be done with the help of the CTRL-key.

OPTIONS
   Tile	Selection
       -file name  use the specified file as the source	image for the puzzle

       -side p	   select  the	side  of  the image to be on top, if you don't
		   like	the mess with the double sided tiles.

   Size	Selection
       -w x	   Select number of tiles in horizontal	direction. The	Images
		   are	automatically  rotated	in portrait orientation	before
		   they	are sliced. Therefore x	usually	should be smaller than
		   y of	the next option.

       -h y	   Select number of tiles in vertical direction	respectively.

       -ts n	   Select average tile width. Instead of explicitly specifying
		   the number of tiles by using	the previous  options  -w  and
		   -h,	the  average  tile width in pixels can be selected and
		   the values for x and	y above	are computed according	to  to
		   the selected	size.

   Image Options
       -ww x	   Select  width of image in pixels. This can be used to scale
		   the image before playing for	the case that a	very large im-
		   age is the source.

       -wh h	   Select height of image in pixels. If	only one  of  -ww  and
		   -wh,	the aspect ratio is kept constant.

       -no_crop	   The	image is usually automatically cropped,	since many im-
		   ages	are surrounded by  frames  or  textual	comments.  The
		   cropping stops at a reasonable amount of colors per line or
		   row.	 If  this is not desired of if you want	to puzzle with
		   painted images with few color, you should disable this fea-
		   ture.

       -no_flip	   Before tiling takes place, a	landscape image	is rotated  to
		   portrait  mode, which effects successive options like -w or
		   -ww.	If this	is not desired,	you can	 switch	 this  feature
		   off.

   X-Window options
       -display	name
		   Select the display to connect to.

       -shapes	   If  the  SHAPE-extension  is	supported by your display, you
		   can use this	option to let each puzzle tile appear  in  its
		   own	shaped	window.	The results might depend on the	behav-
		   iour	of the window-manager. The manager is actually advised
		   by the override  redirect  attribute	 flag  of  the	puzzle
		   shapes not to do anything with them.	But who	knows ...

       -no_shm	   When	 the program was build with support of the MIT-SHM ex-
		   tension, it might crash when	started	to display on a	remote
		   machine or X-terminal. You can deselect the	usage  of  the
		   extension with this option.

   Miscellaneous
       -no_anim	   Turns  off animation	of rotation and	flipping, for the case
		   the machine isn't fast enough to make it look nice.

ZOOMING	& PANNING
       For not losing tiles at the window border and for  getting  more	 work-
       space,  the  game  has some zooming and panning features	to control the
       view on your desk. They are controlled via the keyboard with  the  fol-
       lowing functionality:

	 Cursor	Keys:	    Pan	View
	 Page-Up or Add:    Zoom in
	 Page-Down or Sub:  Zoom out
	 Home:		    Reset to original size
	 End:		    Set	maximum	zooming	to view	all tiles

       The  image  quality  usually suffers from zooming, since	gif-images are
       usually dithered	to be viewed best in their original size.   This  also
       applies to the size options -ww and -wh.

Color Allocation
       The  program  was  tested  on  PseudoColor- and TrueColor-displays.  On
       PseudoColor-displays the	program	might run out of colors, since	colors
       are  very limited and it	has to share its colors	with other clients. It
       tries to	share similar colors with other	clients.  But if too may color
       consuming clients are  running,	the  image-quality  will  suffer.  You
       should  stop other clients in that case or you might quantize the image
       to a fewer number of colors  with  packages  like  ImageMagick,	xv  or
       netpbm.

SEE ALSO
       X(1), convert(1), xv(1),	ppmquant(1)

COPYRIGHT
       Copyright 1996, Helmut Hoenig, Heiligenhaus

       email (for any comments):
	       Helmut.Hoenig@hub.de

       smail (for gifts):
	       Helmut Hoenig
	       Hopfenstrasse 8a
	       65520 Bad Camberg
	       GERMANY

	      ********************************************************

		 By the	way, I am collecting banknotes!	If you want
		  to join into my collection, get any bill of your
		 country, sign it on the backside and send it to me
			  so I will pin	it on my world map.
		  (Don't forget	the exact location for the pin :-)
		But you	can also just send me a	picture	postcard ...

	      ********************************************************

       Permission  to  use, copy, modify, and distribute this software for any
       purpose and without fee is hereby  granted,  provided  that  the	 above
       copyright notice	appear in all copies.

   other fancy things from the author
       xcol (1990)    -	color selector for editing text-files
       flying (94/95) -	pool billard simulation
       xdefmap (1995) -	enhanced tool for setting up standard colormaps
       xmemory (95/96)-	memory with simultaneous multiplayer action

       available at ftp.x.org and its mirrors

X Version 11			 July-23-1996			       xjig(1)

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