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Info-Graphics Digest	Sun May 17 03:00:21 PDT 1987

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Today's Topics:

  Tek 412[589] Software?
 tessellating 3D scalar fields into polygons
 PHIGS Proposed Standard
 GKS 3-D ISO/DP 8805 Source
 GKS 3-D ISO/DP 8805 Source
 Graphics Standards Information Sources

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Date:     Sun, 10 May 87 21:21:29 EDT
From: Kurt Fickie (IBD) <fickie@BRL.ARPA>
Subject:  Tek 412[589] Software?


We have some applications we would like to port to a 
Tektronix 4129 terminal.  Although we have several
commercial packages available such as DISSPLA and
PVI, neither takes much advantage of the internal
power of the terminal (hidden surfaces, wireframes,
mutiple bit planes, etc.).  

Is there anyone out there who has written some software
which talks directly to a 412x series terminal and would
be willing to share it?  There is some pseudo-code already
written in the manual, but I find reading well-written
source more understandable.  Besides, there is no reason
to re-invent the wheel.  Anything written in C, F77, 
EFL, RATFOR, or PASCAL would be appreciated.  Thanks.


                      Kurt Fickie
                      <fickie@brl.arpa>




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Date: Sun, 10 May 87 22:51:54 PDT
From: johnston@lbl-csam.arpa (Bill Johnston [csr])
Subject: tessellating 3D scalar fields into polygons

I need information on software or algorithms to tessellate three
dimensional scalar fields into polygons that can be used for
rendering.  To explain by example, say one has a 90 X 90 X 90 array of
real numbers that have been produced by mathematical function or a
simulation of some sort.  Because of how this field was produced,
particular constant values define a surface of interest. (Consider
x**2+y**2+z**2=const.) This surface can be contoured by following the
constant values along a plane that cuts the volume (assuming that any
values of interest occur on this plane). The contours could the be
tessellated by connecting contours in adjacent, parallel planes by
lines that form polygons. Alternatively, one might consider trying
to construct patches directly by trying to follow the surface.

I am familiar with the contouring capability of the NCAR software, and the
contour tessellating software in movie.byu. Neither of these do a very
good job for complex surfaces. Can anyone give me further information
and pointers to software?

	Thanks, Bill Johnston
	Lawrence Berkeley Laboratory
	wejohnston@lbl.arpa
	...ucbvax!lbl-csam.arpa!johnston

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Date: 11 May 87 16:58:04 EDT (Monday)
From: kushall.Henr@Xerox.COM
Subject: PHIGS Proposed Standard



Copies of the PHIGS standard proposal can be obtained from:

GlobalEngineering Documents
1-800-854-7179

Ask for ANSI document X3.144-198x
The cost is $75.00 plus shipping and Handling

Ed Kushall
 

------------------------------

Date: 12 May 87 12:59:00 EDT (Tuesday)
Subject: GKS 3-D ISO/DP 8805 Source
 <Info-Graphics-Request@ADS.ARPA>
From: Ed Kushall <Kushall.Henr@Xerox.COM>

GKS-3D is an ISO Draft Proposal(DP)
The Document ID is ISO/DP 8805

This document may be obtained by writing:

CS21 Secretariat
Americian National Standards Institute (ANSI)
1430 Broadway, New York 10018
 

------------------------------

Date: 12 May 87 12:59:00 EDT (Tuesday)
Subject: GKS 3-D ISO/DP 8805 Source
 <Info-Graphics-Request@ADS.ARPA>
From: Ed Kushall <Kushall.Henr@Xerox.COM>

GKS-3D is an ISO Draft Proposal(DP)
The Document ID is ISO/DP 8805

This document may be obtained by writing:

CS21 Secretariat
Americian National Standards Institute (ANSI)
1430 Broadway, New York 10018
 


------------------------------

Date: 12 May 87 16:55:12 EDT (Tuesday)
Subject: Graphics Standards Information Sources
From: Ed Kushall <Kushall.Henr@Xerox.COM>

The Following documentation on graphics standards and sources for that
documentation is listed below.
************************************************************************

The following may be obtained from:

ANSI Sales Department
1430 Broadway, New York, NY 10018

Graphical Kernel System-X3.124-1985

Graphical Kernel System Functional Description ISO 7942

Graphical Kernal System-Fortran Language Binding-X3.124.1-1985

Graphical Kernal System- Language Binding Part 1: Fortran -ISO/DIS
8651/1 

Graphical Kernal System- Language Binding Part 2: Pascal -ISO/DIS 8651/2

Graphical Kernal System- Language Binding Part 3: Ada -ISO/DIS 8651/3 


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

The following documents are available by writing:
X3 Secretariat CBEMA
311 First St. NW
Suite 500
Washington, D.C. 20001-2178

Programmers Hierarchical Interactive Graphics System (PHIGS)-X3.144-198x

Graphics Language Bindings Abbreviations List- ISO TC97/SC21/WG2
Ask for the General Language Binding Working Papers

Graphical Kernel System (GKS) C language Binding-X3H3/86-27
Ask for the GKS Language Binding Working Papers package

Graphical Kernel System (GKS) ADA language Binding-X3H3.124.3-198x
Ask for the GKS Language Binding Working Papers package

GKS 3D Fortran Language Binding-ISO TC97/SC21/WG2 N670
Ask for the GKS-3D Language Binding Working Papers package

PHIGS Fortran Language Binding BSR X3.144.1-198x
Ask for the PHIGS Language Binding Working Papers package

PHIGS Ada Language Binding-X3H3/86-42
Ask for the PHIGS Language Binding Working Papers package

Computer Graphics Interface (CGI) Fortran Language Binding-X3H34/86-7
Ask for the CGI Language Binding Working Papers package


****************************************************************************
The following documents are available by writing:
Madeleine R. Sparks, Chair ASC X3H3.4 Language Binding
System Development Corporation/ Burroughs
4810 Bradford Blvd NW
Huntsville, AL. 35805

GKS C language Binding ISO TC97/SC21/WG2 N

Status Report of the Graphics Standards Planning Committee

*********************************************************************
The following may be ordered by writing:
SC21 Secretariat
ANSI
1430 Broadway, Nwe York, N.Y. 10018

Computer Graphics Interface-ISO TC97/SC21/WG2 N597

GKS-3D-ISO/DP 8805

***********************************************************************
The following may be ordered from:
( some of the documents listed above may also be available from this
source)
Global Engineering Documents 
1-800-854-7197

Programmers Hierarchical Interactive Graphics System (PHIGS)-X3.144-198x
($75) 

GKS Pascal Language Binding- X3.124-189x ($35)

Computer Graphics Interface- X3-.161-198x ($75)

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





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