Nautilus 1992 July/Nautilus-3-8/Nautilus-3-8.bin/Tools & Utilities/Techy Stuff/Doco ƒ/CSMP ƒ/CSMP-V1-064.TXT

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C.S.M.P. Digest             Thu, 30 Apr 92       Volume 1 : Issue 64

Today's Topics:

    PowerBook Problem
    Views created via FONTs/PICTs
    mac and APL, does it exist?
    How to find directory id?
    jGNEHook (previously, wrongly titled _jGNEFilter)
    Menu fonts
    Color drawing advice?
    compression routines


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

From: [e-mail] (Brad Morris)
Subject: PowerBook Problem
Date: 23 Mar 92 19:25:20 GMT
Organization: University of Chicago Computing Organizations

Help!  My program runs really slow on a Powerbook.

Details:
I am finishing up a game that using TickCount for timing all the
delays.  It works fine on every mac I have tried it on except the
PowerBooks.  On the PowerBook, if the mouse is not moved for a while,
the delays get longer and shorter, like it is interupting to save power
or not doing updates as often or something. Anyone out there know what
the powerbook does to tickcounts and whether or not there is a way
to turn it off?

Thanks!

+++++++++++++++++++++++++++

From: [e-mail] (Paul Wood)
Date: 25 Mar 92 09:23:05 GMT
Organization: The Information Technology Business Of The Post Office

In article <[e-mail]> [e-mail] writes:
>Help!  My program runs really slow on a Powerbook.
>
>Details:
>I am finishing up a game that using TickCount for timing all the
>delays.  It works fine on every mac I have tried it on except the
>PowerBooks.  On the PowerBook, if the mouse is not moved for a while,
>the delays get longer and shorter, like it is interupting to save power
>or not doing updates as often or something. Anyone out there know what
>the powerbook does to tickcounts and whether or not there is a way
>to turn it off?
>
Start up the Portable control panel and while holding down
the option key click on the words "Minutes Until Automatic Sleep"

All will be revealed !!! :-)

+++++++++++++++++++++++++++

From: [e-mail] (Steve Christensen)
Date: 26 Mar 92 04:25:47 GMT
Organization: Apple Computer Inc., Cupertino, CA

[e-mail] (Brad Morris) writes:

>Help!  My program runs really slow on a Powerbook.

>Details:
>I am finishing up a game that using TickCount for timing all the
>delays.  It works fine on every mac I have tried it on except the
>PowerBooks.  On the PowerBook, if the mouse is not moved for a while,
>the delays get longer and shorter, like it is interupting to save power
>or not doing updates as often or something. Anyone out there know what
>the powerbook does to tickcounts and whether or not there is a way
>to turn it off?

The Mac Portable and the PowerBooks go into a rest/idle state after a
period of time if it doesn't appear that there's any activity.  The
execution of an application doesn't necessarily count as activity.
What you'll see is that animation will slow down to a crawl.

The best way to keep this from happening is to call the _IdleUpdate trap
($A285) (or IdleUpdate() for you compiler guys).  This will let the system
know that your application is busy doing something so it won't slow down...

steve
- --
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Steve Christensen            Never hit a man with glasses.
  [e-mail]            Hit him with a baseball bat.

+++++++++++++++++++++++++++

From: [e-mail] (Juri Munkki)
Date: 26 Mar 92 10:11:59 GMT
Organization: Helsinki University of Technology, Finland

In article <[e-mail]> [e-mail] (Paul Wood) writes:
>In article <[e-mail]> [e-mail] writes:
>>Details:
>>I am finishing up a game that using TickCount for timing all the
>>delays.  It works fine on every mac I have tried it on except the
>>PowerBooks.  On the PowerBook, if the mouse is not moved for a while,
>>the delays get longer and shorter, like it is interupting to save power
>>or not doing updates as often or something. Anyone out there know what
>>the powerbook does to tickcounts and whether or not there is a way
>>to turn it off?
>>
>Start up the Portable control panel and while holding down
>the option key click on the words "Minutes Until Automatic Sleep"
>
>All will be revealed !!! :-)

Sorry, wrong solution.

It is indeed the idle time power saver that is kicking in, but since
this question was asked in the comp.sys.mac.programmer newsgroup, the
solution is not to switch the power saving off by using the control panel.

After all, if the program knows that the power saver shouldn't kick in
and slow the machine down, it should tell this to the system. Fortunately
the power manager routines (documented in Inside Macintosh VI) tell you
how to disable this mode temporarily.

   ____________________________________________________________________________
  / Juri Munkki        /  Helsinki University of Technology   /  Wind  / Project /
 / [e-mail]  /  Computing Center Macintosh Support  /  Surf  / Arashi  /
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+++++++++++++++++++++++++++

From: [e-mail] (Brad Morris)
Date: 26 Mar 92 18:54:24 GMT
Organization: University of Chicago Computing Organizations

As the orginal poster of this query, I have to say that people were
right, it was the sleep state.  What is the feeling...should I change
the sleep state or should I just tell people when they notice to
change it themselves if they want?

Brad Morris

+++++++++++++++++++++++++++

From: [e-mail] (Jim Reekes)
Date: 26 Mar 92 23:45:16 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]>, [e-mail] (Brad Morris) writes:
>
> Help!  My program runs really slow on a Powerbook.
>
> Details:
> I am finishing up a game that using TickCount for timing all the
> delays.  It works fine on every mac I have tried it on except the
> PowerBooks.  On the PowerBook, if the mouse is not moved for a while,
> the delays get longer and shorter, like it is interupting to save power
> or not doing updates as often or something. Anyone out there know what
> the powerbook does to tickcounts and whether or not there is a way
> to turn it off?

I think you should try calling Delay instead of TickCount.  I'm not sure,
but I think the Power Manager is watching calls to Delay.  I would guess
you're PowerBook is trying to go to sleep.  TickCount is updated by
a VBL task.


- -----------------------------------------------------------------------
Jim Reekes, E.O.             |     Macintosh Toolbox Engineering
                             |          Sound Manager Expert
Apple Computer, Inc.         | "All opinions expressed are mine, and do
20525 Mariani Ave. MS: 81-KS |   not necessarily represent those of my
Cupertino, CA 95014          |       employer, Apple Computer Inc."

+++++++++++++++++++++++++++

From: [e-mail] (Jim Reekes)
Date: 26 Mar 92 23:45:16 GMT
Organization: Apple Computer, Inc.

In article <[e-mail]>, [e-mail] (Brad Morris) writes:
>
> Help!  My program runs really slow on a Powerbook.
>
> Details:
> I am finishing up a game that using TickCount for timing all the
> delays.  It works fine on every mac I have tried it on except the
> PowerBooks.  On the PowerBook, if the mouse is not moved for a while,
> the delays get longer and shorter, like it is interupting to save power
> or not doing updates as often or something. Anyone out there know what
> the powerbook does to tickcounts and whether or not there is a way
> to turn it off?

I think you should try calling Delay instead of TickCount.  I'm not sure,
but I think the Power Manager is watching calls to Delay.  I would guess
you're PowerBook is trying to go to sleep.  TickCount is updated by
a VBL task.


- -----------------------------------------------------------------------
Jim Reekes, E.O.             |     Macintosh Toolbox Engineering
                             |          Sound Manager Expert
Apple Computer, Inc.         | "All opinions expressed are mine, and do
20525 Mariani Ave. MS: 81-KS |   not necessarily represent those of my
Cupertino, CA 95014          |       employer, Apple Computer Inc."

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

From: [e-mail] (Bruce Carter)
Subject: Views created via FONTs/PICTs
Date: 24 Mar 92 17:37:35 GMT
Organization: Boise State University - CBI Product Development

Greetings all,

Discussions of how to best create the 3D "mouse eye" view of a maze have been
popular lately.  Most of the solutions posted have revolved around a line drawn
representation of the view.  I'm interested in the possibility of a more
detailed rendering.

It seems like it would be possible to create a FONT, or even beter a library of
PICTs that could be stuck together in various combinations to create a very
detailed view.  In addition to having various things lying on the floor, or
hanging on the walls or from the ceiling, the floor, walls, and ceiling
themselves could have different textures and characteristics in different parts
of the maze.

I started fooling around with this last night by drawing out a view, and
started looking at what it would take to piece this stuff together.  I haven't
progressed very far yet, and was wondering if there is anyone out there with
some experience in handling this sort of presentation.

Thanks for any information.
                                     <->
Bruce Carter, CBI Product Development                [e-mail]
Simplot/Micron Instructional Technology Center       amccarte@idbsu (Bitnet)
Boise State University, Boise, ID  83725             [phone]@phone

+++++++++++++++++++++++++++

From: [e-mail] (Juri Munkki)
Date: 25 Mar 92 22:14:58 GMT
Organization: Helsinki University of Technology, Finland

In article <[e-mail]> [e-mail] (Bruce Carter) writes:
>Discussions of how to best create the 3D "mouse eye" view of a maze have been
>popular lately.  Most of the solutions posted have revolved around a line drawn
>representation of the view.  I'm interested in the possibility of a more
>detailed rendering.
>
>It seems like it would be possible to create a FONT, or even beter a library of
>PICTs that could be stuck together in various combinations to create a very
>detailed view.  In addition to having various things lying on the floor, or
>hanging on the walls or from the ceiling, the floor, walls, and ceiling
>themselves could have different textures and characteristics in different parts
>of the maze.

It's not possible, if you allow free movement within the maze. A font
would be a very bad idea. A library of PICT resources containing
texture maps is a better idea. (Free movement == free rotation and not
just 90 degree jumps when you rotate your view. Also, you can be
located in any part of the square and not just in the middle.)

>I started fooling around with this last night by drawing out a view, and
>started looking at what it would take to piece this stuff together.  I haven't
>progressed very far yet, and was wondering if there is anyone out there with
>some experience in handling this sort of presentation.

You can use the same maze drawing algorithm that I gave earlier in the
rec.games.programmer newsgroup. This algorithm gives you a set of visible
polygons. You can map any texture to these polygons, if you wish. The
only requirement is that the corners are not rounded or shaped. This
would make the calculations a lot harder.

Objects within the maze are very easy to add to my algorithm, since it
tells you the potential visible squares and gives you a set of non-overlapping
polygons that describe the visible maze walls. Just clip your objects to
these walls in 3D (actually 2D, since this is really a 2D problem) and you
can have any number of different objects.

   ____________________________________________________________________________
  / Juri Munkki        /  Helsinki University of Technology   /  Wind  / Project /
 / [e-mail]  /  Computing Center Macintosh Support  /  Surf  / Arashi  /
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

+++++++++++++++++++++++++++

From: [e-mail] (Robert J Woodhead)
Date: 26 Mar 92 07:16:10 GMT
Organization: Foretune Co., Ltd.

In article <[e-mail]> [e-mail] (Bruce Carter) writes:
>Discussions of how to best create the 3D "mouse eye" view of a maze have been
>popular lately.  Most of the solutions posted have revolved around a line drawn
>representation of the view.  I'm interested in the possibility of a more
>detailed rendering.

This problem was first solved by Andrew Greenberg and first used in a
computer game (Moria?) written on the old UofI PLATO system back in the
mid-70's.

The trick is to fake the perspective so that each level "into" the
view is exactly 1/2 the size of the next "closer to the eye" level.
This means that diagonal lines along the edges are all nice 45
degree angles.  Wireframe and textured graphics can then be created
using a font of NxN dot characters because all of the clipping edges
between levels of the maze will fall between two adjacent character
cells.

If you do it correctly, the image of a facing wall + the two adjacent
diagonal walls will fit exactly in the space taken up by the 2-times
larger next-closer facing wall.

This technique was often used in the early days of frp games where
processor, memory or bandwidth limitations (on PLATO, 1200 baud)
were a factor.

- --
+---------------------------------------------------------------------------+
| Robert J. Woodhead, Biar Games / AnimEigo, Incs.    [e-mail] |
| "9/13/99 : First nuclear explosion on the far side of the moon"           |
|     --- One of the many headlines in Gainax's "Otaku no Video 1985"       |

+++++++++++++++++++++++++++

From: [e-mail] (Jon W{tte)
Date: 27 Mar 92 15:41:16 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.co.jp> [e-mail] (Robert J Woodhead) writes:

   >Discussions of how to best create the 3D "mouse eye" view of a maze have been
   >popular lately.  Most of the solutions posted have revolved around a line drawn
   >representation of the view.  I'm interested in the possibility of a more
   >detailed rendering.

   This problem was first solved by Andrew Greenberg and first used in a
   computer game (Moria?) written on the old UofI PLATO system back in the
   mid-70's.

   The trick is to fake the perspective so that each level "into" the
   view is exactly 1/2 the size of the next "closer to the eye" level.
   This means that diagonal lines along the edges are all nice 45
   degree angles.  Wireframe and textured graphics can then be created

No, it's not that kind of view we want.

We want a view from ANYWHERE _whithin_ a square, in ANY direction
(not just the four or six cardinal directions)

Not too hard to do wuth generic 3D algorithms, but there ought to
be a faster, more optimized way...

- --
[e-mail]; Jon W{tte, the Diplomat - NOT!

+++++++++++++++++++++++++++

From: [e-mail] (Jon W{tte)
Date: 27 Mar 92 15:41:16 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.co.jp> [e-mail] (Robert J Woodhead) writes:

   >Discussions of how to best create the 3D "mouse eye" view of a maze have been
   >popular lately.  Most of the solutions posted have revolved around a line drawn
   >representation of the view.  I'm interested in the possibility of a more
   >detailed rendering.

   This problem was first solved by Andrew Greenberg and first used in a
   computer game (Moria?) written on the old UofI PLATO system back in the
   mid-70's.

   The trick is to fake the perspective so that each level "into" the
   view is exactly 1/2 the size of the next "closer to the eye" level.
   This means that diagonal lines along the edges are all nice 45
   degree angles.  Wireframe and textured graphics can then be created

No, it's not that kind of view we want.

We want a view from ANYWHERE _whithin_ a square, in ANY direction
(not just the four or six cardinal directions)

Not too hard to do wuth generic 3D algorithms, but there ought to
be a faster, more optimized way...

- --
[e-mail]; Jon W{tte, the Diplomat - NOT!

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

From: [e-mail] (Kees de Ridder)
Subject: mac and APL, does it exist?
Date: 26 Mar 92 11:56:23 GMT
Organization: Center for Innovation and Cooperative Technology, University of Amsterdam

We are looking for apl on the mac. Does it exist????
Thanks,

- ---
Kees de Ridder,
Internet:           AppleLink:    Voice:
[e-mail]     Hol0146       (0)10-4074255

+++++++++++++++++++++++++++

From: [e-mail] (Terry Thiel)
Organization: University of Illinois at Urbana
Date: Thu, 26 Mar 1992 13:42:59 GMT

[e-mail] (Kees de Ridder) writes:

>We are looking for apl on the mac. Does it exist????
>Thanks,

>---
>Kees de Ridder,
>Internet:           AppleLink:    Voice:
>[e-mail]     Hol0146       (0)10-4074255
I know it does exist but I couldn't tell you where to find it.  A professor
Iknow uses it all the time (and swears by it).

+++++++++++++++++++++++++++

From: [e-mail] (Sakari Aaltonen)
Date: 26 Mar 92 22:44:44 GMT
Organization: Helsinki University of Technology, Finland

For Mac APL, you might try:
   MicroAPL Ltd.
   South Bank Technopark
   90 London Road
   London SE1 6LN
   U.K.

Hope this helps,
s.a.

- --
- -----------------------------------------------------------------------------
Sakari Aaltonen                             Helsinki University of Technology
Email: [e-mail]
- ---  You can't keep a Finn down without him getting all red in the face  ----

+++++++++++++++++++++++++++

From: [e-mail] (Sakari Aaltonen)
Date: 26 Mar 92 23:03:47 GMT
Organization: Helsinki University of Technology, Finland

The following address might help:
   MicroAPL Ltd.
   South Bank Technopark
   90 London Road
   London SE1 6LN
   U.K.


- --
- -----------------------------------------------------------------------------
Sakari Aaltonen                             Helsinki University of Technology
Email: [e-mail]
- ---  You can't keep a Finn down without him getting all red in the face  ----

+++++++++++++++++++++++++++

From: [e-mail] (Robert Minich)
Organization: Oklahoma State University
Date: Fri, 27 Mar 92 17:10:25 GMT

>From article <[e-mail]>, by [e-mail] (Kees de Ridder):
> We are looking for apl on the mac. Does it exist????
> Thanks,

Once again, archie to the rescue!

% archie -s macapl

Host gdr.bath.ac.uk

    Location: /pdsoft/macintosh/lang
           FILE -rw-r--r--      41134  Feb 13 1987  macapl1-10.hqx
           FILE -rw-r--r--      34823  Feb 14 1987  macapl10-10.hqx
           FILE -rw-r--r--      41039  Feb 13 1987  macapl2-10.hqx
           FILE -rw-r--r--      41040  Feb 13 1987  macapl3-10.hqx
           FILE -rw-r--r--      41042  Feb 13 1987  macapl4-10.hqx
           FILE -rw-r--r--      41041  Feb 13 1987  macapl5-10.hqx
           FILE -rw-r--r--      41092  Feb 14 1987  macapl6-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl7-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl8-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl9-10.hqx

Host rigel.acs.oakland.edu

    Location: /pub/macintosh/lang
           FILE -rw-r--r--      41134  Feb 13 1987  macapl1-10.hqx
           FILE -rw-r--r--      34823  Feb 13 1987  macapl10-10.hqx
           FILE -rw-r--r--      41039  Feb 13 1987  macapl2-10.hqx
           FILE -rw-r--r--      41040  Feb 13 1987  macapl3-10.hqx
           FILE -rw-r--r--      41042  Feb 13 1987  macapl4-10.hqx
           FILE -rw-r--r--      41041  Feb 13 1987  macapl5-10.hqx
           FILE -rw-r--r--      41092  Feb 13 1987  macapl6-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl7-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl8-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl9-10.hqx

Host toklab.ics.osaka-u.ac.jp

    Location: /mac/info-mac/info-mac/old/d
           FILE -rw-r--r--      34052  Nov  8 1988  demo-macapl-part1.hqx.Z
           FILE -rw-r--r--      27438  Nov  8 1988  demo-macapl-part10.hqx.Z
           FILE -rw-r--r--      31768  Nov  8 1988  demo-macapl-part2.hqx.Z
           FILE -rw-r--r--      32355  Nov  8 1988  demo-macapl-part3.hqx.Z
           FILE -rw-r--r--      27810  Nov  8 1988  demo-macapl-part4.hqx.Z
           FILE -rw-r--r--      31222  Nov  8 1988  demo-macapl-part5.hqx.Z
           FILE -rw-r--r--      28803  Nov  8 1988  demo-macapl-part6.hqx.Z
           FILE -rw-r--r--      34352  Nov  8 1988  demo-macapl-part7.hqx.Z
           FILE -rw-r--r--      33279  Nov  8 1988  demo-macapl-part8.hqx.Z
           FILE -rw-r--r--      30553  Nov  8 1988  demo-macapl-part9.hqx.Z

Host wuarchive.wustl.edu

    Location: /mirrors/macintosh/lang
           FILE -rw-r--r--      41134  Feb 12 1987  macapl1-10.hqx
           FILE -rw-r--r--      34823  Feb 13 1987  macapl10-10.hqx
           FILE -rw-r--r--      41039  Feb 12 1987  macapl2-10.hqx
           FILE -rw-r--r--      41040  Feb 12 1987  macapl3-10.hqx
           FILE -rw-r--r--      41042  Feb 12 1987  macapl4-10.hqx
           FILE -rw-r--r--      41041  Feb 12 1987  macapl5-10.hqx
           FILE -rw-r--r--      41092  Feb 13 1987  macapl6-10.hqx
           FILE -rw-r--r--      41043  Feb 12 1987  macapl7-10.hqx
           FILE -rw-r--r--      41043  Feb 12 1987  macapl8-10.hqx
           FILE -rw-r--r--      41043  Feb 12 1987  macapl9-10.hqx
- --
Robert Minich
[e-mail]   |Godwin's Rule of Nazi Analogies: As a Usenet dis-
Oklahoma State University |cussion grows longer, the probability of a com-
Bill 'n Opus for '92      |parison involving Nazis or Hitler approaches one.

+++++++++++++++++++++++++++

From: [e-mail] (Robert Minich)
Organization: Oklahoma State University
Date: Fri, 27 Mar 92 17:10:25 GMT

>From article <[e-mail]>, by [e-mail] (Kees de Ridder):
> We are looking for apl on the mac. Does it exist????
> Thanks,

Once again, archie to the rescue!

% archie -s macapl

Host gdr.bath.ac.uk

    Location: /pdsoft/macintosh/lang
           FILE -rw-r--r--      41134  Feb 13 1987  macapl1-10.hqx
           FILE -rw-r--r--      34823  Feb 14 1987  macapl10-10.hqx
           FILE -rw-r--r--      41039  Feb 13 1987  macapl2-10.hqx
           FILE -rw-r--r--      41040  Feb 13 1987  macapl3-10.hqx
           FILE -rw-r--r--      41042  Feb 13 1987  macapl4-10.hqx
           FILE -rw-r--r--      41041  Feb 13 1987  macapl5-10.hqx
           FILE -rw-r--r--      41092  Feb 14 1987  macapl6-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl7-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl8-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl9-10.hqx

Host rigel.acs.oakland.edu

    Location: /pub/macintosh/lang
           FILE -rw-r--r--      41134  Feb 13 1987  macapl1-10.hqx
           FILE -rw-r--r--      34823  Feb 13 1987  macapl10-10.hqx
           FILE -rw-r--r--      41039  Feb 13 1987  macapl2-10.hqx
           FILE -rw-r--r--      41040  Feb 13 1987  macapl3-10.hqx
           FILE -rw-r--r--      41042  Feb 13 1987  macapl4-10.hqx
           FILE -rw-r--r--      41041  Feb 13 1987  macapl5-10.hqx
           FILE -rw-r--r--      41092  Feb 13 1987  macapl6-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl7-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl8-10.hqx
           FILE -rw-r--r--      41043  Feb 13 1987  macapl9-10.hqx

Host toklab.ics.osaka-u.ac.jp

    Location: /mac/info-mac/info-mac/old/d
           FILE -rw-r--r--      34052  Nov  8 1988  demo-macapl-part1.hqx.Z
           FILE -rw-r--r--      27438  Nov  8 1988  demo-macapl-part10.hqx.Z
           FILE -rw-r--r--      31768  Nov  8 1988  demo-macapl-part2.hqx.Z
           FILE -rw-r--r--      32355  Nov  8 1988  demo-macapl-part3.hqx.Z
           FILE -rw-r--r--      27810  Nov  8 1988  demo-macapl-part4.hqx.Z
           FILE -rw-r--r--      31222  Nov  8 1988  demo-macapl-part5.hqx.Z
           FILE -rw-r--r--      28803  Nov  8 1988  demo-macapl-part6.hqx.Z
           FILE -rw-r--r--      34352  Nov  8 1988  demo-macapl-part7.hqx.Z
           FILE -rw-r--r--      33279  Nov  8 1988  demo-macapl-part8.hqx.Z
           FILE -rw-r--r--      30553  Nov  8 1988  demo-macapl-part9.hqx.Z

Host wuarchive.wustl.edu

    Location: /mirrors/macintosh/lang
           FILE -rw-r--r--      41134  Feb 12 1987  macapl1-10.hqx
           FILE -rw-r--r--      34823  Feb 13 1987  macapl10-10.hqx
           FILE -rw-r--r--      41039  Feb 12 1987  macapl2-10.hqx
           FILE -rw-r--r--      41040  Feb 12 1987  macapl3-10.hqx
           FILE -rw-r--r--      41042  Feb 12 1987  macapl4-10.hqx
           FILE -rw-r--r--      41041  Feb 12 1987  macapl5-10.hqx
           FILE -rw-r--r--      41092  Feb 13 1987  macapl6-10.hqx
           FILE -rw-r--r--      41043  Feb 12 1987  macapl7-10.hqx
           FILE -rw-r--r--      41043  Feb 12 1987  macapl8-10.hqx
           FILE -rw-r--r--      41043  Feb 12 1987  macapl9-10.hqx
- --
Robert Minich
[e-mail]   |Godwin's Rule of Nazi Analogies: As a Usenet dis-
Oklahoma State University |cussion grows longer, the probability of a com-
Bill 'n Opus for '92      |parison involving Nazis or Hitler approaches one.

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

Organization: Penn State University
Date: Thursday, 26 Mar 1992 10:47:47 EST
From: D. Jay Newman <[e-mail]>
Subject: How to find directory id?

Hi:

Is there a high-level function to return the directory id of a given directory,
if I know its name, volume, and parent directory?  (Hopefully this will also
tell me if the directory doesn't exist.)

Thank You.

()()()()()()()()()()()()() CBEL--Teaching & Learning Technologies ()()()
D. Jay Newman     !            Have you ever wondered who
dn5@psuvm         !            Caspar the Friendly Ghost
[e-mail] !            was when he was alive?

+++++++++++++++++++++++++++

From: [e-mail] (Jon W{tte)
Date: 27 Mar 92 15:49:20 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.psu.edu> [e-mail] (D. Jay Newman) writes:

   Is there a high-level function to return the directory id of a given
   directory, if I know its name, volume, and parent directory?  (Hopefully
   this will also tell me if the directory doesn't exist.)

OSErr
GetDirID ( FSSpec * fss , long * id )
{
    CInfoPBRec pb ;
    OSErr err ;

    BlockClear ( & pb , sizeof ( pb ) ) ;
    pb . dirInfo . ioVRefNum = fss -> vRefNum ;
    pb . dirInfo . ioDrDirID = fss -> parID ;
    pb . dirInfo . ioNamePtr = fss -> name ;
    err = PBGetCatInfo ( & pb , 0 ) ;

    if ( ! err && ! ( pb . hFileInfo . ioFlAttrib & 0x10 ) ) {

        err = fnfErr ;
    }
    * id = pb . dirInfo . ioDrDirID ;

    return err ;
}

Hope this helps. BlockClear is left as an excercise for the reader.
Note: it's more fun in assembly :-)


- --
[e-mail]; Jon W{tte, the Diplomat - NOT!

+++++++++++++++++++++++++++

From: [e-mail] (Jon W{tte)
Date: 27 Mar 92 15:49:20 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

.psu.edu> [e-mail] (D. Jay Newman) writes:

   Is there a high-level function to return the directory id of a given
   directory, if I know its name, volume, and parent directory?  (Hopefully
   this will also tell me if the directory doesn't exist.)

OSErr
GetDirID ( FSSpec * fss , long * id )
{
    CInfoPBRec pb ;
    OSErr err ;

    BlockClear ( & pb , sizeof ( pb ) ) ;
    pb . dirInfo . ioVRefNum = fss -> vRefNum ;
    pb . dirInfo . ioDrDirID = fss -> parID ;
    pb . dirInfo . ioNamePtr = fss -> name ;
    err = PBGetCatInfo ( & pb , 0 ) ;

    if ( ! err && ! ( pb . hFileInfo . ioFlAttrib & 0x10 ) ) {

        err = fnfErr ;
    }
    * id = pb . dirInfo . ioDrDirID ;

    return err ;
}

Hope this helps. BlockClear is left as an excercise for the reader.
Note: it's more fun in assembly :-)


- --
[e-mail]; Jon W{tte, the Diplomat - NOT!

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

From: [e-mail] (Daniel Morrow)
Subject: jGNEHook (previously, wrongly titled _jGNEFilter)
Date: 26 Mar 92 20:44:38 GMT
Organization: Drexel University, Dept. of Math. and Comp. Sci.

A few days ago a made an inquiry for a friend of mine about
jGNEFilter.

He recently told me that it was probably called _jGNEHook_

Anyway, he is writing a system extension that checks for disk insertion
events (among other things) and, for some reason, thought jGNEHook might
help him out.
Obviously, I myself no nothing of this routine and was wondering
if anyone knew about it, uses it, or knows where I can get documentation
about it.

I would be very grateful for any help in this matter.
Thanks in advance. :)
- -Dan

+++++++++++++++++++++++++++

From: [e-mail] (Jim Walker)
Date: 27 Mar 92 15:57:25 GMT
Organization: Univ. of S. Carolina, Department of Mathematics


You were right the first time, it's called JGNEFilter.  (I tried to reply
to your first posting by e-mail, but it bounced.)

There is a recent Apple 'code snippet' that illustrates the use of
JGNEFilter.  There is also an example THINK C INIT called Shift-o-matic,
which is available by ftp from bigbird.csd.scarolina.edu in pub/mac.
- --
  -- Jim Walker [e-mail]  [e-mail]

+++++++++++++++++++++++++++

From: [e-mail] (Jim Walker)
Date: 27 Mar 92 15:57:25 GMT
Organization: Univ. of S. Carolina, Department of Mathematics


You were right the first time, it's called JGNEFilter.  (I tried to reply
to your first posting by e-mail, but it bounced.)

There is a recent Apple 'code snippet' that illustrates the use of
JGNEFilter.  There is also an example THINK C INIT called Shift-o-matic,
which is available by ftp from bigbird.csd.scarolina.edu in pub/mac.
- --
  -- Jim Walker [e-mail]  [e-mail]

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

From: [e-mail] (Jeremy Roussak)
Subject: Menu fonts
Date: 26 Mar 92 22:20:49 GMT
Organization: Computer Science Dept, QMW, University of London

I suspect this has been discussed recently, but I don't have
any hard information.

I want an INIT I've written, which pops up a menu, to be able
to draw its menu in any font, any size.  So I set SysFontFam
and SysFontSize to my own values and pop up the menu, and
everything's fine.  However, although I immediately restore
those two variables, sometimes the font I've used doesn't go
away immediately, so normal application menus get drawn in my
menu's font.  Switching to another app solves the problem.

It seems to be an entirely benign cosmetic problem, but it
really doesn't look very nice.  Is there anything else I should
be doing?

I'm using 7.0 tuned on an SE/30, but the same thing happens
under 6.0.7.

All help gratefully received.

Jeremy Roussak

+++++++++++++++++++++++++++

From: [e-mail] (John Wallace)
Organization: TRW Data Systems Center, Redondo Beach, CA
Date: Fri, 27 Mar 92 20:02:05 GMT

In article <[e-mail]> [e-mail] (Jeremy Roussak) writes:
>
>I want an INIT I've written, which pops up a menu, to be able
>to draw its menu in any font, any size.  So I set SysFontFam
>and SysFontSize to my own values and pop up the menu, and
>everything's fine.  However, although I immediately restore
>those two variables, sometimes the font I've used doesn't go
>away immediately, so normal application menus get drawn in my
>menu's font.  Switching to another app solves the problem.
>
>Jeremy Roussak


Try setting LastSPExtra (LongInt at $B4C) to -1, or other FM
globals like CurFMInput (pointer at $988) to -1 to invalidate
the FontManager's buffers.

Cheers!
John

- ----
John Wallace            [e-mail]


+++++++++++++++++++++++++++

From: [e-mail] (John Wallace)
Organization: TRW Data Systems Center, Redondo Beach, CA
Date: Fri, 27 Mar 92 20:02:05 GMT

In article <[e-mail]> [e-mail] (Jeremy Roussak) writes:
>
>I want an INIT I've written, which pops up a menu, to be able
>to draw its menu in any font, any size.  So I set SysFontFam
>and SysFontSize to my own values and pop up the menu, and
>everything's fine.  However, although I immediately restore
>those two variables, sometimes the font I've used doesn't go
>away immediately, so normal application menus get drawn in my
>menu's font.  Switching to another app solves the problem.
>
>Jeremy Roussak


Try setting LastSPExtra (LongInt at $B4C) to -1, or other FM
globals like CurFMInput (pointer at $988) to -1 to invalidate
the FontManager's buffers.

Cheers!
John

- ----
John Wallace            [e-mail]


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

Subject: Color drawing advice?
From: [e-mail]
Date: 27 Mar 92 00:15:06 EST
Organization: Wright State University

Greetings, oh mac.wizards; I seek guidance about drawing in color.

I'm iterating a function and plotting the resulting co-ordinate pairs
to make a picture. I'm using an offscreen GWorld, so updates are clean
and I can drag the image around in a window. Right now I'm plotting
dots in the default foreground color, black, using MoveTo & Line(0,0)
(good advice from the FAQ).

I'd like to alter the foreground color by examining the pixel I'm
about to draw and picking a darker shade if I've been there before. I
imagine calling GetCPixel to get the color and Color2Index to find the
index in the color table. Would a palette of explicit colors be the
right choice here? How would I translate the index returned by
Color2Index into a pallette index?

I've looked the DTS sample code and snippets. I think I understand
about GetPalette, Palette2CTab and bit 14 of ctFlags for making the
GWorld's color environment match my window. Any tips.? I'm working in
Pascal, but C or assembly is welcomed.

o----------------------------------------------------------------------------o
| John B. Matthews, [e-mail], disclaimer:= myViews <> WSU |
| "I'm a commensal .sig virus, indistinguishable from an ordinary organelle."|
o----------------------------------------------------------------------------o


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

From: caligula!edw (Edwin H. Watkeys III, Sys Admin)
Subject: compression routines
Date: Sat, 28 Mar 92 21:45:03 EST
Organization: Drexel University Guerrilla Networking Project

Does anyone know where I can get code for LZW compression in either C or Pascal?
Even an algorithm would be nice...

Thanks,

Ed

- ----
Ed Watkeys                   "...if you wish to strive for peace
[e-mail]       of soul and pleasure, then believe;
Drexel University (Comp Sci)  if you wish to be a devotee of truth,
Guerrilla Networking Project  then inquire...." -- Nietzsche

+++++++++++++++++++++++++++

From: [e-mail] (Peter N Lewis)
Organization: Curtin University of Technology
Date: Mon, 30 Mar 1992 01:05:14 GMT

caligula!edw (Edwin H. Watkeys III, Sys Admin) writes:

>Does anyone know where I can get code for LZW compression in either
>C or Pascal?
>Even an algorithm would be nice...

>[e-mail]

I tried to mail you, but this address bounced like bricks don't.

There is source code to LZRW (I'll give you an archie listing at
the bottom of this message).  LZRW is very fast, but only gets around 50%
compression.  As for LZW proper, I believe thats what everyone uses,
in particular, thats what unix compress uses, and you can get unix
compress everywhere...

HTH,
   Peter.

Archie listing for lzrw:
Host cs.dal.ca   (129.173.4.5)
Last updated 00:14 14 Mar 1992

    Location: /pub/comp.archives
      DIRECTORY rwxrwxrwx       512  Apr 22  1991   lzrw1

Host srawgw.sra.co.jp   (133.137.4.3)
Last updated 13:58 22 Feb 1992

    Location: /.a/sranha-bp/arch/arch/comp.archives/compression/lz77
      DIRECTORY rwxr-xr-x       512  Apr 22  1991   lzrw1

Host cs.orst.edu   (128.193.32.1)
Last updated 00:06 14 Mar 1992

    Location: /pub/src/printers
      DIRECTORY rwxr-xr-x      1024  Aug 19  1991   lzrw

Host archie.au   (139.130.4.6)
Last updated 00:01 30 Mar 1992

    Location: /micros/pc/garbo/turbopas
      FILE      r--r--r--      5837  May 19  1991   lzrw1.Z

Host wuarchive.wustl.edu   (128.252.135.4)
Last updated 00:19  1 Mar 1992

    Location: /mirrors3/garbo.uwasa.fi/turbopas
      FILE      r--r--r--      5837  May 19  1991   lzrw1.Z

Host cs.dal.ca   (129.173.4.5)
Last updated 00:14 14 Mar 1992

    Location: /pub/comp.archives/comp.compression
      FILE      r--r--r--      2119  Oct  5 04:29
lzrw-is-not-an-algorithm

Host ftp.uu.net   (137.39.1.9)
Last updated 01:02 30 Mar 1992

    Location: /pub
      FILE      rw-r--r--     18269  Apr 27  1991   lzrw1.tar.Z

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     37980  Nov 27 22:20   lzrw1-a.68000

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     37980  Aug 21  1991   lzrw1-a.68000

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     17158  Nov 27 22:22   lzrw1-a.c

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     17158  Aug 21  1991   lzrw1-a.c

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     13822  Nov 27 22:27   lzrw1-a.txt

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     13822  Aug 21  1991   lzrw1-a.txt

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     36945  Nov 27 22:31   lzrw1.68000

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     36945  Aug 21  1991   lzrw1.68000

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--      6373  Nov 27 22:32   lzrw1.c

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--      6373  Aug 21  1991   lzrw1.c

Host sabrina.dei.unipd.it   (147.162.2.106)
Last updated 00:51 27 Feb 1992

    Location: /pub/msdos/misc
      FILE      r--r--r--      6373  Apr 26  1991   lzrw1.c

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     25164  Nov 27 22:34   lzrw1.tex

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     25164  Aug 21  1991   lzrw1.tex

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     40322  Nov 27 22:35   lzrw2.c

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     40322  Aug 21  1991   lzrw2.c

Host cs.orst.edu   (128.193.32.1)
Last updated 00:06 14 Mar 1992

    Location: /pub/src/printers/lzrw
      FILE      rw-r--r--     40081  Jun 30  1991   lzrw2.c

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--      7308  Nov 27 22:36   lzrw2.txt

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--      7308  Aug 21  1991   lzrw2.txt

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     49486  Nov 27 22:37   lzrw3-a.c

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     49486  Aug 21  1991   lzrw3-a.c

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--      4991  Nov 27 22:37   lzrw3-a.txt

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--      4991  Aug 21  1991   lzrw3-a.txt

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     40655  Nov 27 22:38   lzrw3.c

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     40655  Aug 21  1991   lzrw3.c

Host cs.orst.edu   (128.193.32.1)
Last updated 00:06 14 Mar 1992

    Location: /pub/src/printers/lzrw
      FILE      rw-r--r--     40282  Jun 30  1991   lzrw3.c

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--      6622  Nov 27 22:38   lzrw3.txt

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--      6622  Aug 21  1991   lzrw3.txt

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     23379  Nov 27 22:39   lzrw4.txt

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     23379  Aug 21  1991   lzrw4.txt

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--      1147  Nov 27 22:39   lzrw45_covering

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--      1147  Aug 21  1991   lzrw45_covering

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     36029  Nov 27 22:40   lzrw5.txt

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     36029  Aug 21  1991   lzrw5.txt

Host nic.funet.fi   (128.214.6.100)
Last updated 04:59 30 Mar 1992

    Location: /pub/misc/compression
      FILE      rw-rw-r--     14914  Nov 27 22:41   lzrw_headers.h

Host sirius.ucs.adelaide.edu.au   (129.127.40.3)
Last updated 00:08 28 Mar 1992

    Location: /pub/compression
      FILE      rw-r--r--     14914  Aug 21  1991   lzrw_headers.h

Host nuri.inria.fr   (128.93.1.26)
Last updated 04:26 30 Mar 1992

    Location: /prog
      FILE      rw-rw-r--      3112  May 17  1991   lzrw1.c.Z
_______________________________________________________________________
Peter N Lewis, NCRPDA, Curtin University       [e-mail]
GPO Box U1987, Perth WA 6001, AUSTRALIA             FAX: [phone]
Season this text with ":-)"s and "(sp?)"s as directed, or to your taste.

+++++++++++++++++++++++++++

From: caligula!edw (Edwin H. Watkeys III, Sys Admin)
Date: Mon, 30 Mar 92 00:19:07 EST
Organization: Drexel University Guerrilla Networking Project


In article <[e-mail]> (comp.sys.mac.programmer), [e-mail] (Peter N Lewis) writes:
> caligula!edw (Edwin H. Watkeys III, Sys Admin) writes:
> >[e-mail]
>
> I tried to mail you, but this address bounced like bricks don't.
>
Hmm... The uucp maps just came out -- maybe things will be better...

> There is source code to LZRW (I'll give you an archie listing at
> the bottom of this message).  LZRW is very fast, but only gets around 50%
> compression.  As for LZW proper, I believe thats what everyone uses,
> in particular, thats what unix compress uses, and you can get unix
> compress everywhere...
>
Thanks a lot -- I'm working on some communications stuff (freeware) with dynamic
(and transparent) compression -- the LZRW could come in very handy...

> HTH,
>    Peter.

Thanks,

Ed
(phlpa!caligula![e-mail])


- --
Ed Watkeys                   "...if you wish to strive for peace
[e-mail]       of soul and pleasure, then believe;
Drexel University (Comp Sci)  if you wish to be a devotee of truth,
Guerrilla Networking Project  then inquire...." -- Nietzsche

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

End of C.S.M.P. Digest
**********************