Note:  The module suite came to the IAC as four modules in one directory:
		cabinet maker
		extruder
		grid_generator
		taperer
       Due to the current structure of the IAC's directories, this has
       been split into 4 separate directories on the site.   However,
       a compressed tar archive of all 4 mods is included with each
       of the directories as wood_mod_suite.tar.Z

       Also note that the images mentioned below have been stored a single
       time on the ftp site, in the directory at avs.ncsc.org called
       sample_data/avs_data/woodworking_images.


		    AVS Woodworker's Module Suite

This directory contains source codes, man pages, and sample data sets
and networks for a set of four AVS modules which can be used to design
simple woodworking projects.  For more information on the purpose of
the project, please read the file called "Poster_Session" and the man
pages for each module.  The four modules are: 

	cm - cabinet maker - generates structures made of boxes
	taper - taperer - generates structures made of tapered boxes
	extruder - creates capped, extruded tubes from lists of X/Y pairs
	grid_gen - creates measured grids so that accurate models can
		be constructed

Module and Source Files:
   Makefile	- Makefile for all the modules in this directory
   cm.c	 	- source code for the CABINET MAKER module
   cm.txt	- man page for CABINET MAKER
   extruder.c	- source code for EXTRUDER module
   extruder.txt	- man page for EXTRUDER module
   grid_gen.c	- source code for GRID_GENERATOR module
   grid_gen.txt	- man page for GRID_GENERATOR module
   taper.c	- source code for TAPERER module
   taper.txt	- man page for TAPERER module
   circle.c	- generates a circular PCF file for EXTRUDER
   ellipse.c	- generates a semi-elliptical PCF file for EXTRUDER

Examples:
   README	- this file
   Poster_Session - text of the AVS93 Poster Session describing this project 

   bed.net	- sample network using all the modules
   bed.cabinet	- CABINET MAKER input file (used by bed.net)
   head.pcf	- EXTRUDER input file (used by bed.net)
   posts.taper	- TAPERER input file (used by bed.net)

   music.cabinet - CABINET MAKER input file 
   puzzle.cabinet - CABINET MAKER input file 
   table.cabinet - CABINET MAKER input file 
   table.net	 - sample network  


Texture Map Wood Images:
   oak.x.Z
   pine.x.Z	
   plywood.x.Z	
   walnut.x.Z	
   wide_grain.x.Z	 
NAME
	extruder - create geometries by extruding curves

AUTHOR  Larry Gelberg, Advanced Visual Systems, Inc.

SUMMARY
	Name	extruder
	Type	Input
	Inputs	NONE
	Outputs	- geom

	Parameter
	Name			Type		Default	Range
	Profile_Curve_File	browser		
	front_capped		toggle		on
	back_capped		toggle		on
	profile_scale		dial	 	1.00	0 - 100
	length			dial	 	1.00	0 - 100
	x trans			typein_real	0.00	Unbounded
	y trans			typein_real	0.00	Unbounded
	z trans			typein_real	0.00	Unbounded

DESCRIPTION
The module EXTRUDER is used to create extruded, possibly capped,
'tubes' from 'profile curve files' (X/Y coordinate lists).  The
Profile Curve file is simply a file of X/Y coordinate pairs in ASCII.
The last point in the list is connected to the first one creating a
closed tube. The sample programs 'circle.c' and 'ellipse.c' in this
directory produce example profile curve files. 

The caps are generated by the following simple-minded algorithm: The
center of gravity of the 2D shape defined by the profile curve points
is computed and then a triangle is generated between this center of
gravity and each consecutive pair of points on the profile.
Therefore, wildly concave shapes (such as letters) will not generate
proper caps.  


PARAMETERS

Profile_Curve_File (browser)
This is a file browser used to specify where the profile curve points
live.  This file should consist of a list of X/Y pairs.  The last
point in the file will connect back to the first one.

front_capped (toggle)
This toggle indicates whether a 'cap' should be generated on the top
of the extruded tube.

back_capped (toggle)
This toggle indicates whether a 'cap' should be generated on the
bottom of the extruded tube.

profile_scale (dial)
This is used to scale the points (and resulting geometry) up or down
prior to generating the tube.

length (dial)
This dial is used to specify the length (height) of the tube.

x trans, y trans, z trans (typein_reals)
These dials are used to translate the tube in 3-space. 

OUTPUTS
	output - geom

EXAMPLE NETWORKS
	extruder 
           |
       geometry viewer

RELATED FILES
The sample programs circle.c and ellipse.c in this directory produce
sample profile curve files.

SEE ALSO
This is one of a suite of four modules which have been developed to
facilitate woodworking design.  These modules are:
        CABINET MAKER
        TAPERER
        EXTRUDER
        GRID_GENERATOR

The module CABINET MAKER is nearly identical to TAPERER except that
you can specify only untapered 'boxes' which represent boards.
'taper'

The module TAPERER is nearly identical to CABINET MAKER except that
you can specify a starting width and and ending width thus effecting a
'taper'

The module GRID_GENERATOR generates an English measurement grid with
optional markings in feet, inches, and sub-inches.  This is useful for
validating the dimensions of the structure.