HDTenEightyP/NetNews huggingface dataset:
From: gary@enigma.esd.sgi.com (Wizard of OZ)
Newsgroups: comp.graphics.explorer
Subject: Re: DataScribe Scalar->Vector problem
Date: 18 Nov 1992 19:37:51 GMT
Organization: Silicon Graphics Computer Systems, Mountain View, CA
Distribution: world
Reply-To: gary@sgi.com
NNTP-Posting-Host: enigma.esd.sgi.com

In article <1992Nov18.144114.17970@erenj.com>, srfergu@rufus.erenj.com (Scott Ferguson) writes:
|> From: srfergu@rufus.erenj.com (Scott Ferguson)
|> Subject: DataScribe Scalar->Vector problem

|> In dscribe, let's say you'd like to read in a 3D lattice from a plain
|> file with no header. Therefore, you'd like to enter xdim, ydim, and zdim
|> from parameters.
|> 
|> Next, you need to pass xdim, etc into the dims of the output lattice. 
|> Problem is, the parameters are three scalars, and the dims is an array.
|> I tried making subregions of the dims array (from 1 to 1, 2 to 2, 3 to 3),
|> but dscribe treats them as arrays even though there's only one component.

There are a couple ways to do this. 

Bring up a Constants template and put a set in it. Put 3 longs in it
and give the initial values to be the parameter variables. Then connect the
set to the dims array.

Like:

  Parameter
	Long 1	| xdim
	Long 2 | ydim
	Long 3 | zdim

  Constants
	Set
	  Long 4   | dumx  | xdim
	  Long 5  | dumy  | ydim
	  Long 6  | dumz  | zdim

where {x,y,z}dim are the parameters 
-----

Or you can go to the dims array and make fragments and wire to them
And ignore the warning msg at Parse time about scalar connected to Array.

|> -- 
|> ----------------------------------------------------------------------
|> Scott Ferguson                        Exxon Research & Engineering Co.
|> Project Engineer                      New Jersey
|> ----------------------------------------------------------------------
|> "Always bark at a dog."

-- 

Gary Griffin			I just hope I'm still dreamin'
gary@sgi.com			'cause if this is for real
				I'm gonna get very depressed
Think WORLDWIDE		
						Howard T Duck
From: tovar@edu.stanford.camis (Maria Tovar)
Newsgroups: comp.graphics.explorer
Subject: .sgo or flip
Date: 18 Nov 92 05:43:01 GMT
Organization: Department of Computer Science, Edinburgh University

<From Explorer mailing list - please reply via email also>


Is there a way to convert a geometry structure into a .sgo or flip format, via
Explorer?


Thanks

Maria A. Tovar
tovar@camis.stanford.edu

-- 
e|p Gordon Cameron                      |     Phone:+44 31 650 5024(Rm. 2259)
c|c Edinburgh Parallel Computing Centre |     Email: gordonc@epcc.ed.ac.uk
    oOo The University of Edinburgh oOo |    'So far so good, so now so what'
From: mwgst1+@pitt.edu (Michael W Groff)
Newsgroups: comp.graphics.explorer
Subject: How to reduce the size of a 3D lattice data set
Keywords: MRI data, 3D Filter, Explorer
Date: 22 Nov 92 21:31:36 GMT
Distribution: usa
Organization: University of Pittsburgh
Originator: mwgst1@unixd3.cis.pitt.edu


Are there modules in the standard explorer release that will filter a
large 3D lattice down to a smaller 3D lattice?  If not are there any
such modules available via anonymous FTP?
My large data set is a stack of MRI images and I am looking for ways to
reduce the number of data points in the image while preserving, as much
as possible, the quality of the image.

Thanks in advance,
-- 
michael groff
Medical Student
mwg@med.pitt.edu
Newsgroups: comp.graphics.explorer
From: srfergu@rufus.erenj.com (Scott Ferguson)
Subject: Re: Explorer module for animating a module parameter?
Organization: Exxon Research & Engineering Co.
Date: Wed, 18 Nov 1992 16:36:55 GMT

In article <1992Nov18.143802.17653@erenj.com>, srfergu@rufus.erenj.com (Scott Ferguson) writes:
|> In AVS, I can use the "Animated Int" module wired to a parameter of
|> another module to create simple animated sequences.
|> 

Whoa, Nellie! Just found the "Timer" module. I believe that does exactly
what I asked for. As Emily Littella would say,

NEVERMIND!
Tanks a lot
-- 
----------------------------------------------------------------------
Scott Ferguson                        Exxon Research & Engineering Co.
Project Engineer                      New Jersey
----------------------------------------------------------------------
"Always bark at a dog."
Newsgroups: comp.graphics.explorer
From: srfergu@rufus.erenj.com (Scott Ferguson)
Subject: DataScribe Scalar->Vector problem
Organization: Exxon Research & Engineering Co.
Date: Wed, 18 Nov 1992 14:41:14 GMT

In dscribe, let's say you'd like to read in a 3D lattice from a plain
file with no header. Therefore, you'd like to enter xdim, ydim, and zdim
from parameters.

Next, you need to pass xdim, etc into the dims of the output lattice. 
Problem is, the parameters are three scalars, and the dims is an array.
I tried making subregions of the dims array (from 1 to 1, 2 to 2, 3 to 3),
but dscribe treats them as arrays even though there's only one component.

Is there a way around this? Is this fixed somehow in Explorer 2? When is
Explorer 2 due out?

Thanks a lot.

-- 
----------------------------------------------------------------------
Scott Ferguson                        Exxon Research & Engineering Co.
Project Engineer                      New Jersey
----------------------------------------------------------------------
"Always bark at a dog."
From: lferjo@ca.uwo.engga.gfx (Lisa Ferjo)
Newsgroups: comp.graphics.explorer
Subject: Orientation Data
Date: 18 Nov 92 05:39:50 GMT
Organization: Department of Computer Science, Edinburgh University

<from Explorer mailing list - please reply via email also>

I am a fourth year engineering student.  Eventually I will be
mapping collagen fibre orientation ont a 3d model of a heartvalve.
The orientation data is in the form of a histogram.  The horizontal
axis is from 0 to 180 degrees.  The veritcal axis is the number of
collegen fibres. I have histograms for various points on the
heartvalve.

I have read the users manual and the man descriptions of the
modules.  I also have the module writers guide.  I also have read
some of the info at ftp sites (139.88.54.33)

I have tried using explorer but without sucess.  I have tried doing
doing simple examples such as creating a 3d data file and trying
to get an image using explorer. I have created a data file
(xcord,ycordin,zcord,value) that looks like this.
10
10 11 12 1000
20 21 22 2000
30 31 32 3000
.  .  .  .
.  .  .  .
.  .  .  .
100 101 102 10000

I then went to dscribe and created an input template with a vector
glyph with n=10 and an 3d array glyph with n1=10,n2=10,n3=10. I
then created and ouput template. I tried all the differet types of
3d lattices and I let nDataVar=1.  I used this module in the map
editor and I connected it to VolumetoGeom and then to render.  I
did not get an output.

I would appreciate simple examples of how to input images
such as the coordinates of a cube and then how to map 2d arrays
onto specific points on a cube.


Also, how do you pick which modules to use.  I have read the man
pages on them but it does not seem much help

Lisa Ferjo
lferjo@gfx.engga.uwo.ca---2124136939-1028652113-721495797:#22793--





-- 
e|p Gordon Cameron                      |     Phone:+44 31 650 5024(Rm. 2259)
c|c Edinburgh Parallel Computing Centre |     Email: gordonc@epcc.ed.ac.uk
    oOo The University of Edinburgh oOo |    'So far so good, so now so what'
Newsgroups: comp.graphics.explorer
From: kdeacon@nmsu.edu (DEACON)
Subject: GEOM based animator for explorer?
Organization: NMSU Computer Science
Distribution: comp.graphics.explorer
Date: Mon, 16 Nov 1992 21:45:14 GMT

Is there a module or utility for explorer that would let me string
together a bunch of geometries (written by write geom, or something)
into a flip book type animated sequence that I could rotate about,
zoom, pan, etc, in the render module.  I am new to explorer and I
haven't found or seen mentioned in this newgroup anything like this,
so any help would be appreciated.  The effect that I am trying to copy
is like the used of Geometry Cycles in AVS if you know how that works.
Thanks for the help.
Keith
From: frost@sdsc.edu (Richard Frost)
Newsgroups: comp.graphics.explorer
Subject: mbuilder documentation?
Date: 20 Nov 1992 21:53:09 GMT
Organization: San Diego Supercomputer Center
Distribution: world
Reply-To: frost@sdsc.edu
NNTP-Posting-Host: stimpy.sdsc.edu
Keywords: (none)


I'm looking for documentation on the Module Builder (mbuilder).  I've
got the User's Guide, Module Definitions, and Getting Started references.
There's a short blurb (p. 2-17) at the end of the latter, but that's all
I could find.  Is there anything else?  A man page?

---
Richard Frost
San Diego Supercomputer Center		619-534-5179 (voice)
P.O. Box 85608				619-534-5113 (fax)
San Diego, CA 92186-9784		frost@sdsc.edu

Newsgroups: comp.graphics.explorer
From: srfergu@rufus.erenj.com (Scott Ferguson)
Subject: Explorer module for animating a module parameter?
Organization: Exxon Research & Engineering Co.
Date: Wed, 18 Nov 1992 14:38:02 GMT

In AVS, I can use the "Animated Int" module wired to a parameter of
another module to create simple animated sequences.

I've got a time series of images in a 3-D uniform lattice. I'd like
to simply animate them by wiring the k index in OrthoSlice to an
"Animated Int" module. 

Since I can't seem to find anything like this in the manual, I'm asking
here. I already RdTFM.

Thanks a lot.

-- 
----------------------------------------------------------------------
Scott Ferguson                        Exxon Research & Engineering Co.
Project Engineer                      New Jersey
----------------------------------------------------------------------
"Always bark at a dog."
From: craig@hyperion.loni.ucla.edu
Newsgroups: comp.graphics.explorer
Subject: Info Wanted on Explorer Modules
Date: 20 Nov 92 16:51:04 GMT
Distribution: comp.graphics.explorer


	Does there exist ways for Explorer to
	1) read AVS .geom files
	2) read Mathematica format data files
	
	I'm trying to evaluate which visualiztion tools to get for
	an SGI system..

		thanks for your comments,

		Craig Schwartz

	craig@hyperion.loni.ucla.edu
Xref: sparky comp.graphics:12261 comp.lang.c++:16809
From: steved@vaxc.cc.monash.edu.au
Newsgroups: comp.graphics,comp.lang.c++
Subject: Wanted: GKS Graphics and C++ environment on PC platform
Date: 24 Nov 92 09:46:34 +1100
Organization: Computer Centre, Monash University, Australia


There is interest in teaching graphics here and supporting that work
with observation of standards, in particular GKS. We have been using
WATCOM products but are now considering Borlands C++ offering.

Can someone in the graphic and C programming arena give some hints
as to what libraries are available for this combination, or as near to
it as is practical.

Stephen.Dart@cc.monash.edu.au
Newsgroups: comp.graphics
From: lauusitalo@tnclus.tele.nokia.fi
Subject: Re: Problems with 3D studio
Organization: Nokia Telecommunications.
Date: Mon, 16 Nov 1992 08:28:30 GMT

In article <1e1grhINNce1@agate.berkeley.edu>, aron@archangel.ced.berkeley.edu (aron bonar) writes:
> In article <1992Nov13.095846.1@tnclus.tele.nokia.fi>, lauusitalo@tnclus.tele.nokia.fi writes:
> |> In article <1992Nov12.170940.1@ualr.edu>, djlewis@ualr.edu writes:
> |> 
> |> > I don't have your answer, BUT another great loss is that 3DS won't do 
> |> > reflective ( mirror like) surfaces. At least I havn't found the trick. ..
> |> > djlewis@ualr.edu
> |> > 
> |>         Release 2 does. stop.
> |> 
> |> lauri
> |> 
>  It does????  Like reflections of objects on  other objects....  I don't think so...
> Gotta go to raytracing if you want that...  
> 
> But please... tell me I'm wrong...then tell me how you are doing it. 
> 
> Aron

        Take for example 3ds file marbvase.3ds and if that is no reflection
        then tell me xwhat is.

        cheers,
        lauri
From: jonathan@rahul.net (Jonathan Heiliger)
Newsgroups: comp.graphics
Subject: Re: SVGA animation maker?
Keywords: animation FLI animation
Date: 16 Nov 92 05:40:53 GMT
Organization: a2i network

In article <banister.721874213@rintintin.Colorado.EDU> 
banister@rintintin.Colorado.EDU (Trevor Banister) writes:

>Does anyone know of an SVGA animation maker?
>Any format is allright. FLI, GL, DL, etc.
>I'm interested in 640x480x256 or greater.

   What do you mean by 'SVGA'?  The specs that you list above are not S-VGA.  
Just for reference Autodesk Animator/PRO should do what your looking for.



 
-- 
Jonathan Heiliger ........ Electric Power Research Institute
Internet: -/- jonathan@rahul.net -/- flix@mecca.epri.com -/-
Telephone <*> (415) 855-2888
From: tonlun@Moskva.docs.uu.se (Tony Lundstedt)
Newsgroups: comp.graphics
Subject: REQUEST:Random Dot Images
Date: 20 Nov 92 15:58:06 GMT
Organization: Uppsala University
NNTP-Posting-Host: moskva.docs.uu.se

I have seen some 3D images consisting of just a lot of dots. When you focus
you eyes at a distance of about ten feed beyond the paper a 3D figure appears.
I have heard that the figure is built up by random dots. 
 
I am looking for programs that runs on a Sun (Unix) an/or
postscriptfiles of different pictures. 

If someone has anything, please Email me.

(I am also looking for the mathematics behind the pictures)

tonlun@Minsk.DoCS.UU.Se

Newsgroups: comp.graphics
From: ender@cs.montana.edu (Jacob Cormier)
Subject: Re: "Scientific American Frountiers" rips off SIGGRAPH
Keywords: SIGGRAPH
Organization: Dept. of Computer Science, MSU, Bozeman Mt 59717
Date: Mon, 16 Nov 1992 05:31:49 GMT

In article <2388@usna.NAVY.MIL> dfr@usna.navy.mil (PROF D. Rogers (EAS FAC)) writes:
>In article <1992Nov13.193353.2158@megatek.com> tomw@stephanie.megatek.com (Tom Wright) writes:
>!
>! <flames to PBS deleted>
>!
>!You can, if you agree with me, send flames to flowers@athena.mit.edu .
>!
>!Tom Wright
>!(While I am the SIGGRAPH Treasurer, these opinions are purely my own.)
>
>Tom, I think a better approach here would be to start a LETTER writing
>effort directed to the PRESIDENT of MIT with copies to say
>NSF or other funding agencies. What PBS has done is ethically
>wrong.
>
>Dave Rogers
>

Guys, maybe you are pointing the finger at the wrong people.  What if PBS
didn't know that the stuff was taken from SIGGRAPH?  How are they supposed
to know if it wasn't in the show that was submitted to them?  I think you
should leave off the threats to PBS and just lean on the guy at MIT.  Not
too heavily, of course...  8-)

...  This article was brought to you by my girlfriend, an avid PBS watcher, who
was reading over my shoulder.  8-)

--------------------------------------------------------------------------------
Jake Cormier | Poncho Magoo's, the worlds only Irish-Mexican | No,  I don't know
ender@caesar.cs.montana.edu    |   restaurant, located in    | what kind of food
oususajc@trex.oscs.montana.edu |  scenic Kalispell, Montana  | they really serve
From: Ray_Simkus@mindlink.bc.ca (Ray Simkus)
Newsgroups: comp.graphics
Subject: image archive software
Date: 16 Nov 92 06:54:27 GMT
Organization: MIND LINK! - British Columbia, Canada

I am looking for software that will keep track of scanned images and allow
for quick retrieval based on keywords. Ideally keywords would be easy to
enter. The material is single pages, about 100 per day and the keywords would
be a name and the date.

Thanks  Ray

--
Ray Simkus   604-530-1182
4041 200B Street
Langley, BC
V3A 1P1
Internet Ray_Simkus@mindlink.bc.ca
604-530-1182
Newsgroups: comp.graphics,comp.lang.c
From: elan@tasha.cheme.cornell.edu (Elan Feingold)
Subject: Re: Please Help Me Keep My Job!
Reply-To: elan@tasha.cheme.cornell.edu (Elan Feingold)
Organization: Cornell University
Date: Sun, 22 Nov 1992 19:53:26 GMT


> I second (or whatever) the nonimation for Best Article of the Week.

I (n+1) the nomination.

--
---------------------------------------------------------------------------
|  Elan Feingold       |                                       |
|  CS/EE Depts.        |                          |
|  Cornell University  |     ( .sig currently under construction )     |
|  Ithaca NY 14850     |                        |
---------------------------------------------------------------------------
Newsgroups: comp.graphics
From: bohn@ptolemy2.rdrc.rpi.edu (Jan Helge Bhn)
Subject: Point inside a triangle
Reply-To: bohn@rdrc.rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy NY
Date: Sun, 15 Nov 1992 23:01:12 GMT


Does anyone have any suggestions on how to check if a point is located
inside a triangle, accurately and fast.

One method would be to check if the point is on the "left" side of each
edge in the triangle (counter-clockwise orientation on the plane).
Unfortunately, this requires relatively expensive cross-product etc. if
accuracy is to be ensured.

-Jan Helge Bhn
bohn@rdrc.rpi.edu
Newsgroups: comp.graphics
From: orourke@sophia.smith.edu (Joseph O'Rourke)
Subject: Re: Point inside a triangle
Organization: Smith College, Northampton, MA, US
Date: Tue, 17 Nov 1992 13:23:02 GMT

In article <Bxtz3s.6xA@slipknot.rain.com> robert@slipknot.rain.com.UUCP (Robert Reed) writes:

>The special cases are trivial to discard, if the ray intersects a vertex, the
>adjacent vertices must have Y values of opposite sign (assuming a horizontal
>ray) to represent a crossing.  If the point is collinear with an edge, discard
>it [the edge, I presume].

It seems from your description that points on the boundary of the triangle
T are not handled consistently by the ray algorithm.  Below, a is not in T
but b is in T.

			       /\
			      b  \
			     /    \
			    +--a---+       

At least this seems to be what the code that Michael Goza posted does.
Am I right?
Newsgroups: comp.graphics
Subject: DTP256 (registered)
From: 9121644h@lux.latrobe.edu.au (Ryan Jeffery)
Date: Thu, 19 Nov 1992 01:35:09 GMT
Organization: La Trobe University
X-Newsreader: TIN [version 1.1 PL6]

 I downloaded DTP25614.zip a while ago, but it wasn't much good
to me as the magnified editting only allowed changes to every
second line of pixels.

   Is this problem a deliberate bug in the unregistered version
or is it due to a lack of memory.

Newsgroups: comp.graphics,comp.multimedia,comp.sys.sun.wanted
From: mist@source.nl (Michiel Steltman)
Subject: Kodak Photo-CD software
Organization: Source Information Technology B.V.
Date: Mon, 23 Nov 1992 13:37:14 GMT

Hi,

I'd like to know if there already is software to read/decode/vizualize
Photo-CD images on (SUN) workstations, and I'd like to know any experiences
with this new medium.

After reading some stuff on the subject, and after a demo, I start to
believe that Photo-CD, is going to play a major role as a standard for 
distribution of high-quality colour images across computer networks.
The main reason for this believe is the nice fact that these CD's can be 
read on all 'new' CD-type players, including computer-CD.


In short: A photo CD can be made at the local shop for a low cost (here in 
Holland Dfl 1.50, approx $1) per image. A disk contains up to 100 images,
images can later still be added to an existing disk. 5 image files per
image are available on the CD, in resolutions between 192 x 192 and 2000 x
3000 bits, each 24 bits deep. Kodak has put a lot of effort in
accuracy of the color encoding scheme. The max resolution represents
the approx resolution of a ASA 100 colour negative film. These
Photo-CD's can be read on a CD-I or Photo-CD player, but also on most
computer-CD players. It is this last fact that makes me really happy.

Now I would like to hear experiences, and if there is already somebody who
has software to read, decompress, convert these images from Photo-CD

Also I'd like to hear your opinions on my assumption that this is going to 
be a major standard for bitmapped image files.

-- 
----
Michiel Steltman     mist@source.nl    Phone (+31)-79-615511
=============  Source Information Technology     ================
Newsgroups: comp.graphics
From: chim@is.s.u-tokyo.ac.jp (IM Chol Hong)
Subject: Q : Boundary Representation
Organization: Dept. of Information Science, Univ. of Tokyo, Japan.
Distribution: comp.graphics
Date: Mon, 16 Nov 1992 02:55:07 GMT


 I am wondering about the following points :

1) In 3D modeler (in general) using boundary representation, how are every 
  primitive such as quadratic surfaces (sphere, saddle and so on) and 
  tensor product surface(Bezier surfaces ...) represented ?
   Are they all represented by polyhedron ?
2) Algorithms of set operation of boundary represented object.

Could somebody tell me the papers, references and books about these problems ?
--
University of Tokyo
Im Cholhong
chim@is.s.u-tokyo.ac.jp
From: kudzu@netcom.com (Michael Sierchio)
Newsgroups: comp.graphics
Subject: Re: Color Sample to RGB Conversion
Keywords: color conversion
Date: 18 Nov 92 18:05:55 GMT
Organization: True Love, and Home-Grown Tomatoes

In article <6759@m1.cs.man.ac.uk> lilleyc@cs.man.ac.uk (Chris Lilley) writes:
>In article <hewitt.721337021@usafa.af.mil> hewitt@usafa.af.mil (W. Joe
>Hewitt) writes: 
>
>>     I am looking for a way to generate a color on a workstation that closely 
>>matches a given sample from a color plate.  
>
>The simple answer is, mix it by eye.

This is less than satisfying, and less than satisfactory.

>>     I have tried scanning the image (24 bit scanner) with little success.  
>>The scanning software only gives percentages of the R,G, & B components.  
>>Using a little math I converted each percentage to a value in the range 
>>0..255 (24 bit color system) for each RGB component.  
>
>>The problem is that 
>>the new color doesn't look very much like the original sample.  
>
>No, it won't. Red, green, and blue are very loose specifications for
>colours. They differ between different monitors, and between different
>scanners. 

This is false.  The RGB of NTSC video are quite standard.  A properly
adjusted RGB monitor will give good results.  The key is the get the
input from an RGB Camera, whose RGB signals are designed to match an
RGB monitor.

>>     Is there a better way to accurately reproduce a color sample on a 24 bit 
>>workstation?  Is there something I have missed in the conversion?
>
>As you have realised, RGB is not the way to go. You basically have two
>options. 

RGB is how the colors are represented on input and display devices.
It is true that Video has a color gamut smaller than that which can
be realized in print or film,  but very good results can be achieved for
colors in the gamut.

>[blather about] CIE XYZ

There exist color spaces that attempt to preserve the perceptual range --
this isn't relevant to the discussion. 

>your scanner RGB --> CIE XYZ --> your monitor RGB

Nope.  RGB -> XYZ -> RGB -> screen

What's the point?  There will never be any more information than in
the original RGB image.

You can use a densitometer, with selectable color filters, to get reflectance
data about work on paper, etc.  These are typically oriented toward yet another
RGB standard -- the standard color filters used in film. 


-- 
+--------------------------------------------------------------------------+
|  Michael Sierchio                          1563 Solano Avenue, Suite 123 |
|  kudzu@netcom.com                                Berkeley, CA 94707-2116 |
+--------------------------------------------------------------------------+
From: ddulmage@igc.apc.org (Doug Dulmage)
Newsgroups: comp.graphics
Subject: Re: Help needed with Autocad
Date: 21 Nov 92 08:32:00 GMT
Nf-ID: #R:1992Nov20.090320.9009@ac.dal.ca:-1542298772:cdp:1347100015:000:372
Nf-From: cdp.UUCP!ddulmage    Nov 21 00:32:00 1992


I'm posting this for a friend who has been given a challenge.       
Basically what he's looking for is a conversion program which can               
turn TIFF's or GIF's (or any other common format) into autocad DFX 

with Acad ver. 12, you can now import gif's,tiff's, and pcx's
direct into Acad, and it works great! now if you can only get your
hands on version 12...
Newsgroups: comp.graphics