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		      XMGF - 3D OBJECT VIEWER
			WITH MOTIF FRONT END
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	xmgf can be found on

	export.lcs.mit.edu in /contrib

	files:
		xmgf.README
		xmgf.2.0.tar.Z

	You'll need MOTIF and patience (:-))
	Have fun and feedback will be welcomed (good and bad!:-(   
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  Copyright (C) 1992, 1993, Paul D. Hoad 
  This file is part of the Xmgf Software.
  Email: P.Hoad@ee.surrey.ac.uk
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          	Xmgf - Version 2.0 Release 12/1/94

		Xmgf 3D Interactive gf viewer

	  (You don't need to know about gf it's all here)

Xmgf is an Interactive tool for displaying image feature files in gf 
format. Xmgf has a viewing window and controls over the orientation 
and focal point of a viewing camera. Xmgf written in motif is completely 
interactive and buttons exist for most command line options.

Xmgf was written to complement xgf
and to add 3D viewing properties. Xmgf also includes some of the
xgf 2D viewing primitives but allows them to be projected onto a plane 
in the third dimension such that the observer can move around and
observe the sets from a new perspective. 

Xmgf has already been used by for 3D surface representation,Model
representation, 3D line detection data representation, view-sphere 
data representation and depth data representation.

Xmgf Auto-scales images,can have the viewing parameters stored in a file
produce Xfig and Postscript and MIF output as well as RAYSHADE data files and
PGM, PBM and XBM SunRaster and GIF image outputs.

Xmgf has Interactive file selection mens to allow greater flexibility 
in finding files. 

Xmgf can read other CAD or object file formats via filters. current
formats include NFF/OBJ/OFF/RAY/SLA/DXF/MINICAD/IGRIP. These filters do not cover all
the features avaliable but they are a start.

You should read the README and MAKEBUGS in the tar file to find out 
what is needed to be set before building.

Xmgf 1.1 has had major changes and new features including

        Auto Rotation
        Auto Rotate Step Panel
        Rotation Guide
        New Panel Layout
        AutoScale Type Selection
        Auto Redraw Option
        Depth Cueing
        Importing OFF objects
        Printer Commands in appdefaults
        File Selector remembers Dirs and Filters
        Busy Cursor on File Reads and Writes
        Example Backdrop images (PGM & PPM) 
        Bug fixes I hope :-)

Xmgf 1.1.1 a few bugs that had occurred and I missed plus
        Importing NFF files


Xmgf 1.2 ( New features)
        SLA2gf filter
        NFF2gf filter
        OBJ2gf(x3d) filter (lines only) 
        RAY2gf(rayshade) filter (very limited functionality as yet)
        Speeded up rotation ( a little :-))
        Improved Makefile
        scanf Bugs fixed! :-) ( I hope)
        ColourMap Alteration
        DXF2gf(autocad) filter


Xmgf 1.3 ( New features)
        AutoCommand interface language
        MIF output file format (Framemaker)
        Postscript Manual


Xmgf 1.4 ( New features)
	Zoom facility
	MessageBox
	Orthographic Setting	

Xmgf 1.4.1 ( New features )
	Bug fixes (pretty bad bugs actually

Xmgf 1.4.2 (New features )
	Default setting on Background menu 
	Image from command line (Bug fixed) (-b)
	Rotation Guide with no set (Bug fixed)
	2D settings on command line (-l)
	2D settings locks to images
	Image in background any size! 
	(I hope 128x128,256x256,512x512 tested)
	Version Bugs fixed
	sla2gf Newer version.
	Event Handler XmgfEvent.c added
	Make Lint bug fixed

Xmgf 1.5 (New features)
	Icon Panel Button
	Icon Panel Down side (selectable)
	Main Panel selectable from cmd line
	Button description on icons
	key board short cuts (currently a bug in this)

Xmgf 1.6 (New features)
	Picture Bugs
	Animation Panel (Films)
	Zoom in/out buttons
	Coloured Opqaue Fill

Xmgf 1.7 (New Features)
	Dithering
	Motif1.2.2 Bug fixes
	Outlining of polygons

Xmgf 1.8 ( New Features) Beta/Beta.1/
	Expand Image to any size
	XmgfHelp System
	IGRIP2gf filter added (Dan Johnston)
	MINICAD2gf filter added (Dan Johnston)
	Local Attributes to gf Format
	Culling Bug fixed

Xmgf 1.9 ( New Features )
	Font Selection
	'Format Include' addition

Xmgf 1.9.1 (Bug Fixes)
	Message Label Bug Fixed
	Font char struct Bug Fixed

Xmgf 2.0 (New Features)
	New Parmfile version number - auto conversion 
	addinf font metrics to PS/XFIG/FRAME                           
	Sphere type added to PS/XFIG/FRAME                            
	LL updated

	
		Xmgf is Written by Paul Hoad. Copyright - 92/93/94


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Xmgf is Written by Paul Hoad. Copyright - 92/93
		   P.Hoad@ee.surrey.ac.uk
		   Vision Speech and Signal Processing Group
		   University of Surrey 
		   Guildford
		   ENGLAND
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