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fractint-digest       Thursday, August 13 1998       Volume 01 : Number 271




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

Date: Wed, 12 Aug 1998 11:39:24 -0400
From: Sylvie Gallet <[e-mail]>
Subject: Re: (fractint) 35 pars(fn*z+z)kroth map

Bonjour Guy,

>> While experimenting with a par-file from Jimbo I found a strange
>> behaviour of Fractint 19.6 in the TYPE=3DFN*Z+Z. The "1:1" shows the
>> original image, the pictures named strange!, ..1, ..2 and  ..3 are
>> zoom-in's with as result: broken images.. strange...? or, a bug..?
>> enjoy,

  There is nothing strange in this behaviour and it is not a bug, but Jim=

used symmetry=3Dxyaxis whereas these images have no symmetry.  Try removi=
ng
"symmetry=3Dxyaxis" from your pars and you will see the correct images.

  Amicalement,

        - Sylvie

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Date: Wed, 12 Aug 1998 17:39:53 +0200
From: Joe Pearson <[e-mail]>
Subject: RE: (fractint) Running FRACTINT in WIN95

>> >    Windows 95, How to run FractInt for DOS under
>> >        http://fractal.mta.ca/fractint/fracwin95.html
>>
>> Having experienced some small inconvenience in that regard, I took a look
>>at
>> this reference.
>> Talk about differences of opinion between the experts!

The crucial thing seems to be, if you want calculation to continue in
the background while you do other things (and why else are you trying to
run under windows?), you MUST set Misc -  Always suspend to Off.
Otherwise when the DOS session loses focus it gets suspended i.e. no
more calculation!

Also, you "should" use a disk-video mode (low-res real video modes seem
to be OK but not the max for my screen), and you "should" set
textsafe=save in fractint.

Joe

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Date: Wed, 12 Aug 1998 08:47:25 -0700 (PDT)
From: Ken Childress <[e-mail]>
Subject: Re: (fractint) Running FRACTINT in WIN95

>
> The crucial thing seems to be, if you want calculation to continue in
> the background while you do other things (and why else are you trying to
> run under windows?), you MUST set Misc -  Always suspend to Off.
> Otherwise when the DOS session loses focus it gets suspended i.e. no
> more calculation!

Yes, I forgot to mention this.  Also, you may need to adjust the Idle
Sensitivity slider to ensure that your DOS session gets CPU while in the
background.  Although, this seems to be more critical under NT, than
95.


Ken...




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Date: Wed, 12 Aug 1998 18:02:08 +0200
From: Joe Pearson <[e-mail]>
Subject: (fractint) Changing video mode of saved GIF in batch?

I can't work this out but I hope there's a solution.

If I have a long running fractal I can save it, set askvideo=yes,
restore it and select a disk-video mode with the same dimensions, and it
will carry on calculating.  Later I can do the reverse and see the
result.  (Why would I want to do this ... to run in background under
windows while reading other mail!)

If I have 100 long running fractals I can generate them all from scratch
in a disk-video mode with partobat. ... But how can I change them to a
real-video mode in batch?   All command line video= parameters seem to
be ignored when loading using filename= and batch=yes.

thanks
Joe

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Date: Wed, 12 Aug 1998 11:11:20 -0500
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) Running FRACTINT in WIN95

John,

 - Talk about differences of opinion between the experts!
 - >Turn ON Always suspend.

The differences between the advice Jay and I give reflect two different
uses of FractInt.  So let me explain a bit.

FractInt stores your fractal image *only* in the memory on your video card,
while it's drawing.  Now, if you are using FractInt under Windows 95, if
you switch away from it, Windows will reset your display mode back to what
it was before you ran FractInt, and redraw your desktop.  *poof!*  Your
fractal image--which FractInt expects to be safe in video RAM--is now gone.
 When you switch back to FractInt, you will usually find a corrupt screen
and you'll have to regenerate the image.

If you have a nice display driver, you may be able to switch away from
FractInt and back to it and not get a corrupt screen.  This is very
dependent on your video card, driver, the mode you're running Windows in,
and the mode you're using FractInt in.  You will simply have to experiment
and see if it works.  *IF* you can switch away and back without corrupting
your screen, this is when the "Always Suspend" setting becomes critical.
If you're in Windows, but FractInt is permitted to continue generating when
you switch away from it, it will try to write to video memory as it
draws... which Windows will throw away.  When you switch back, you will be
missing not only the part of the fractal that was drawn while you were
switched away, but you will likely find that FractInt begins drawing over
other parts of your fractal as well for a while.  So you turn ON always
suspend, so that when you switch away, FractInt will be paused.

If you CAN'T switch away and back without corrupting the screen, and Always
Suspend is already turned on, then you should put textsafe=save in your
SSTOOLS.INI file and remember to hit the TAB key before switching away from
FractInt.  This will force FractInt itself to save the contents of video
memory when you switch to a text mode (the TAB key will do this) so that it
doesn't have to rely on Windows to do it for you.  You can then switch back
to Windows, and to FractInt, without corrupting your fractal image.  You
must simply remember to switch to a text mode before you leave FractInt.

The Idle Sensitivity setting plays a different role.  What the Idle
Sensitivity setting does is tell Windows how quickly it should assume
FractInt is "idle", and give more processor time to other things that are
running.  The problem here is that Windows' definition of "Idle" is that
you're not typing away in the program.  FractInt is usually churning away
even when you're not pressing keys, so you don't want Windows to consider
it "Idle" just because it's not getting key input.

Sometimes you may want to render a large fractal, using one of the
disk-video modes.  In this case, it is OK to let FractInt run in the
background because it's not trying to write to video memory.  The easiest
thing to do here is start it running in a disk-video mode, then hit
ALT+ENTER to switch it to a windowed mode.  On the toolbar of this window
is an icon that shows two windows; this is the "Background" setting and
it's the opposite of "Always Suspend".  If this button is selected,
FractInt will run even when you switch to other tasks.  Just remember to
deselect this button and hit ALT+ENTER to full-screen FractInt before you
exit it, as Windows usually remembers the settings you used last.

Damien M. Jones   \\
[e-mail]  \\  http://www.icd.com/tsd/ (temporary sanity designs)
                    \\  http://www.fractalus.com/ (fractals are my hobby)

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

Date: Wed, 12 Aug 1998 11:15:56 -0500
From: "Damien M. Jones" <[e-mail]>
Subject: RE: (fractint) Running FRACTINT in WIN95

Joe,

 - if you want calculation to continue in the background while you do
 - other things (and why else are you trying to run under windows?)

One big reason: if you do everything else under Windows, it is a major pain
in the arse to reboot into DOS just because you want to try something in
FractInt.  If I had had to reboot every time I wanted to explore fractals,
I would have abandoned FractInt a *long* time ago.

Damien M. Jones   \\
[e-mail]  \\  http://www.icd.com/tsd/ (temporary sanity designs)
                    \\  http://www.fractalus.com/ (fractals are my hobby)

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

Date: Wed, 12 Aug 1998 09:43:52 -0700
From: "Mike and Linda Allison" <[e-mail]>
Subject: Re: (fractint) plagiarism

I ran this past Angela, and she thought I should bring it up here.

I just ran across the very issue that is being debated on the List.
Someone posted a fractal to abpf.  Although it is not identical, I think
it may be a derivative of one that I posted in 1996.  A shallow zoom and
slight rotation into mine gets me to the other fractal.  Even the
colormap is the one I used when I made my posting.  It is a case of
recognizing your own work, even when slightly altered.

I think Tim is right, inasmuch as some of the Fractint formulas with
default parameters can produce VERY similar, if not identical, fractals.
Those "honest" similarities are rare, but will happen.  If another
colormap had been used, I might not even doubt the originality of the
second image.  However, when the two fractals use the same original
colormap . . .

I can't be certain it isn't the original work of the other artist.  And
I won't be leveling any accusations.  But I have my own secret doubts.
That fractal is not one that I've sold, but it is in the same family as
"Through Neptune's Window," which I sold to Avalanche Publishing for the
2000 Fractal Universe Calendar.  Financial loss hasn't occurred, but the
possibility exists.

Anyway, I thought I would mention that the theoretical does happen!
Linda


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Date: Wed, 12 Aug 1998 12:56:44 -0400 (EDT)
From: [e-mail] (Kragen)
Subject: Re: (fractint) plagiarism

On Tue, 11 Aug 1998, Mike and Linda Allison wrote:
> I agree with Angela.  And just to set the record straight, the code says
> that copyright is still violated whether you charged money or not.  Only
> damages are affected by that.

Actually, the nature of the copyright violation is also affected by
that -- if you make a few copies for fun, it's a civil violation, but
if you make a few copies for money, it's a criminal violation.

Nevertheless, the purpose of the copyright law is to encourage the
progress of science and the useful arts, as set down in the
Constitution, by securing to creators for a limited time the exclusive
rights to the profits from their creation.  And that's what it does.

> Copyright has rights under the law.  Even "fair use" has some rights
> under the law.

For now.  If Congress passes the current "WIPO implementation" bill,
fair use will be dead.

Kragen


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Date: Wed, 12 Aug 1998 13:39:01 -0400 (EDT)
From: [e-mail] (Kragen)
Subject: Re: (fractint) Wrong address for Sylvie Gallet

On Tue, 11 Aug 1998, Ray Montgomery wrote:
> make a connection.  I received a notice "Page Not Found" with three items,
> only one of which I remember, which gave Sylvie's name as "Sylvie%2Gallet"
> rather than "Sylvie Gallet" as indicated in the post.
>     Does anybody know whether the address is incorrectly posted, or am I
> drifting in another 'unknown world"?

Spaces aren't allowed in URLs.  In fact, most characters aren't.  In
order to put them in somehow, there's this percent encoding -- you can
express any character as a % followed by two characters.  %20 is
space.

I don't know whether the address is incorrectly posted.

Kragen


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Date: Wed, 12 Aug 98 11:05:14 -0700
From: Tim Gilman <[e-mail]>
Subject: (fractint) I need some quick help...

I'm making an HFS (Mac-format) CD, and I want to make sure all the
special GIF Header information is preserved.  All I'm doing is opening
images from a CD a friend of mine made (DOS-format) and using Photoshop
to save them.  Doing this create a neat 32x32 thumbnail-icon.

But, I'm not sure if Photoshop is tossing all that extra Header stuff.
And I'm not in a place where I can test my changes.  So, can someone
download my test image from:

http://www.scruz.net/~tgilman/tim/macfract/versions/AAUTEST.GIF

and see if DOS-Fractint can parse it, along with the extra header stuff?

This would help me out tons...

thanks,

- -= tim gilman



  "There is no truth, in which passing through awareness, does not lie.
   Yet we chase after it all the same."           - J. Lacan


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Date: Wed, 12 Aug 1998 11:14:53 -0700
From: "John Wilson" <[e-mail]>
Subject: Re: (fractint) Running FRACTINT in WIN95

Great tips and explanations from all.  Thank you from one grateful
list-member!

John.


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Date: Wed, 12 Aug 1998 13:31:02 -0500
From: "Damien M. Jones" <[e-mail]>
Subject: Re: (fractint) I need some quick help...

Tim,

 - All I'm doing is opening images from a CD a friend of mine made
 - (DOS-format) and using Photoshop to save them.

That is enough to remove the extra FractInt information.  Photoshop won't
preserve the extra info at all.  FractInt cannot recover parameter
information from your test image.

Damien M. Jones   \\
[e-mail]  \\  http://www.icd.com/tsd/ (temporary sanity designs)
                    \\  http://www.fractalus.com/ (fractals are my hobby)

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Date: Wed, 12 Aug 1998 11:51:41 -0700
From: "John Wilson" <[e-mail]>
Subject: Re: (fractint) I need some quick help...

You wrote:

>But, I'm not sure if Photoshop is tossing all that extra Header stuff.
>And I'm not in a place where I can test my changes.  So, can someone
>download my test image from:
>
>http://www.scruz.net/~tgilman/tim/macfract/versions/AAUTEST.GIF
>
>and see if DOS-Fractint can parse it, along with the extra header stuff?


Sorry!   No dice!   This is no longer a fractal.


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Date: Wed, 12 Aug 1998 15:41:53 -0400 (EDT)
From: [e-mail] (Kragen)
Subject: (fractint) Re: your mail

On Wed, 12 Aug 1998, Mike and Linda Allison wrote:
> What's the WIPO implementation bill?  I'm interested.

WIPO is the World Intellectual Property Organization.  It just ratified
a treaty giving yet more rights to intellectual-property-rights owners
and taking away yet more rights from intellectual-property users.

The WIPO implementation bill implements these further restrictions for
the US, and several others.  Among other things, it would make it
illegal to circumvent any copy-protection -- even if you would legally
have the right to get at what's behind the copy protection.  So
copy-protection measures will come to have the force of law.  The
extent of intellectual-property law will be determined only by
intellectual-property owners and by what is technologically plausible,
no longer by Congress or the courts.

Under pressure from scientists and computer folks, Congress added
language permitting reverse-engineering under certain restricted
circumstances.

You can find more information at
<URL:http://www.eff.org/effector/HTML/effect11.08.html> and
<URL:http://www.zdnet.com/intweek/daily/980805b.html>.

Kragen


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

Date: Wed, 12 Aug 1998 23:36:09 +0200
From: Guy Marson <[e-mail]>
Subject: Re: (fractint) 35 pars(fn*z+z)kroth map

At 11:39 12.08.1998 -0400, you wrote:
>Bonjour Guy,
>
>>> While experimenting with a par-file from Jimbo I found a strange
>>> behaviour of Fractint 19.6 in the TYPE=FN*Z+Z. The "1:1" shows the
>>> original image, the pictures named strange!, ..1, ..2 and  ..3 are
>>> zoom-in's with as result: broken images.. strange...? or, a bug..?
>>> enjoy,
>
>  There is nothing strange in this behaviour and it is not a bug, but Jim
>used symmetry=xyaxis whereas these images have no symmetry.  Try removing
>"symmetry=xyaxis" from your pars and you will see the correct images.

Thanks Sylvie, you're right!
By the way, nice homepage you got! From a few of your fractals I will try
to make some films..
At the moment I am playing around with 3D-IFS and 3D-ICONS.. Is there
anybody in this list, having experienced with both of them? Or are there
little helping programs (like IFSSPELL.EXE) but for 3D (fractint) rendering?

Cheers,

Guy


>
>  Amicalement,
>
>        - Sylvie
>
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>



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

Date: Wed, 12 Aug 1998 16:05:05 -0700
From: "Mike and Linda Allison" <[e-mail]>
Subject: Re: (fractint) plagiarism

I thought I'd update you one the similar fractals I mentioned earlier.

I wrote:
>I think Tim is right, inasmuch as some of the Fractint formulas with
>default parameters can produce VERY similar, if not identical,
fractals.
>Those "honest" similarities are rare, but will happen.

Apparently that is the case, here.  The other artist wrote to say:

>>>This is incredible. Fractals are like DNA, practically
irreproducible,
but yours Linda and mine (I generated it myself, working for hours on
colours) are practically identical in concept and colour. Just a few
days ago I didn't know you exist and now I posted a picture that may be
called a plagiarism. I apologize, that certainly was not my
intention.<<<

I accept his explanation and wrote to him:

>>No need for an apology, Tom!  Similarities like this are rare, but are
possible!
Since it's not plagiarism, there is no need to apologize.  Instead, I
say, "Nice image, Tom,"   :-))<<

Linda


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Date: Wed, 12 Aug 1998 19:08:20 -0500
From: "Earl Simpson" <[e-mail]>
Subject: Re: (fractint) I need some quick help...

Tim,

If worked fine on my end.

Earl Simpson


- -----Original Message-----
From: Tim Gilman <[e-mail]>
To: [e-mail] <[e-mail]>
Date: Wednesday, August 12, 1998 1:18 PM
Subject: (fractint) I need some quick help...


>I'm making an HFS (Mac-format) CD, and I want to make sure all the
>special GIF Header information is preserved.  All I'm doing is opening
>images from a CD a friend of mine made (DOS-format) and using Photoshop
>to save them.  Doing this create a neat 32x32 thumbnail-icon.
>
>But, I'm not sure if Photoshop is tossing all that extra Header stuff.
>And I'm not in a place where I can test my changes.  So, can someone
>download my test image from:
>
>http://www.scruz.net/~tgilman/tim/macfract/versions/AAUTEST.GIF
>
>and see if DOS-Fractint can parse it, along with the extra header stuff?
>
>This would help me out tons...
>
>thanks,
>
>-= tim gilman
>
>
>
>  "There is no truth, in which passing through awareness, does not lie.
>   Yet we chase after it all the same."           - J. Lacan
>
>
>--------------------------------------------------------------
>Thanks for using Fractint, The Fractals and Fractint Discussion List
>Post Message:   [e-mail]
>Get Commands:   [e-mail] "help"
>Administrator:  [e-mail]
>Unsubscribe:    [e-mail] "unsubscribe fractint"
>


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Date: Wed, 12 Aug 1998 19:22:23 -0500
From: "Earl Simpson" <[e-mail]>
Subject: Re: (fractint) I need some quick help...

Tim,

It worked fine here, as far as reproducing it, but the data itself is gone.
Shows up as a plasma fractal.

Earl  Simpson


- -----Original Message-----
From: Tim Gilman <[e-mail]>
To: [e-mail] <[e-mail]>
Date: Wednesday, August 12, 1998 1:18 PM
Subject: (fractint) I need some quick help...


>I'm making an HFS (Mac-format) CD, and I want to make sure all the
>special GIF Header information is preserved.  All I'm doing is opening
>images from a CD a friend of mine made (DOS-format) and using Photoshop
>to save them.  Doing this create a neat 32x32 thumbnail-icon.
>
>But, I'm not sure if Photoshop is tossing all that extra Header stuff.
>And I'm not in a place where I can test my changes.  So, can someone
>download my test image from:
>
>http://www.scruz.net/~tgilman/tim/macfract/versions/AAUTEST.GIF
>
>and see if DOS-Fractint can parse it, along with the extra header stuff?
>
>This would help me out tons...
>
>thanks,
>
>-= tim gilman
>
>
>
>  "There is no truth, in which passing through awareness, does not lie.
>   Yet we chase after it all the same."           - J. Lacan
>
>
>--------------------------------------------------------------
>Thanks for using Fractint, The Fractals and Fractint Discussion List
>Post Message:   [e-mail]
>Get Commands:   [e-mail] "help"
>Administrator:  [e-mail]
>Unsubscribe:    [e-mail] "unsubscribe fractint"
>


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Date: Wed, 12 Aug 1998 19:22:23 -0500
From: "Earl Simpson" <[e-mail]>
Subject: Re: (fractint) I need some quick help...

Tim,

It worked fine here, as far as reproducing it, but the data itself is gone.
Shows up as a plasma fractal.

Earl  Simpson


- -----Original Message-----
From: Tim Gilman <[e-mail]>
To: [e-mail] <[e-mail]>
Date: Wednesday, August 12, 1998 1:18 PM
Subject: (fractint) I need some quick help...


>I'm making an HFS (Mac-format) CD, and I want to make sure all the
>special GIF Header information is preserved.  All I'm doing is opening
>images from a CD a friend of mine made (DOS-format) and using Photoshop
>to save them.  Doing this create a neat 32x32 thumbnail-icon.
>
>But, I'm not sure if Photoshop is tossing all that extra Header stuff.
>And I'm not in a place where I can test my changes.  So, can someone
>download my test image from:
>
>http://www.scruz.net/~tgilman/tim/macfract/versions/AAUTEST.GIF
>
>and see if DOS-Fractint can parse it, along with the extra header stuff?
>
>This would help me out tons...
>
>thanks,
>
>-= tim gilman
>
>
>
>  "There is no truth, in which passing through awareness, does not lie.
>   Yet we chase after it all the same."           - J. Lacan
>
>
>--------------------------------------------------------------
>Thanks for using Fractint, The Fractals and Fractint Discussion List
>Post Message:   [e-mail]
>Get Commands:   [e-mail] "help"
>Administrator:  [e-mail]
>Unsubscribe:    [e-mail] "unsubscribe fractint"
>


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Date: Wed, 12 Aug 1998 23:15:32 -0400
From: "Turner Rentz" <[e-mail]>
Subject: Re: (fractint) Running FRACTINT in WIN95

Fractint 19.6 DOS does not run under NT; I could only
get it to draw in the background to disk.

- -----Original Message-----
From: Ken Childress <[e-mail]>
To: [e-mail] <[e-mail]>
Date: Wednesday, August 12, 1998 6:57 AM
Subject: Re: (fractint) Running FRACTINT in WIN95


>>
>> The crucial thing seems to be, if you want calculation to continue in
>> the background while you do other things (and why else are you trying to
>> run under windows?), you MUST set Misc -  Always suspend to Off.
>> Otherwise when the DOS session loses focus it gets suspended i.e. no
>> more calculation!
>
>Yes, I forgot to mention this.  Also, you may need to adjust the Idle
>Sensitivity slider to ensure that your DOS session gets CPU while in the
>background.  Although, this seems to be more critical under NT, than
>95.
>
>
>Ken...
>
>
>
>
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Date: Wed, 12 Aug 1998 19:22:02 -1000
From: "Shauna Jones" <[e-mail]>
Subject: Re: AW: (fractint) Corrupt save / return to picture - display mo

Don't know about you, but Fractint 19.6 runs quite
happily under OS/2 for us, with no need for booting DOS.
Unfortunately, can't do the same thing on the same
hardware with W95! ;-)

And why spend money for System Commander when OS/2's Boot
Manager works just fine?

On 12 Aug 98 at 10:10, Vyvey Jan wrote:

> Everytime I read in this mailing list about problems
> with fractint (most of the time with the video) it's
> because one starts fractint in a dos box from without
> WIN95 or (recently) WIN98 or whatever DOS box it may be.
>
> Let me gave you one good advice: Run Fractint directly
> from 100 % pure DOS, then it's good, beautiful and FAST.
>
> And if you want to use other operating systems on the
> same computer, do as I do and install the software
> bootmanager called SYSTEM COMMANDER that gives you the
> opportunity to start your PC in DOS, WIN311, WIN95,
> WIN98, WINNT, OS2, Linux, ot whatever OS you have and
> want to use. I have on my PC a partition with DOS622,
> one with WIN311 and one with WINNT40. When you want to
> use another OS, simply reboot your PC, choose the OS and
> start (without anything resident of course) your OS in
> the circumstances that are best for that OS (and
> fractint runs best in DOS of course).

Another blast of bits from David
Visit our not-so-boring web page: http://www.aloha.net/~shauna/
Visit the Hawaii Astronomical Society: http://www.hawastsoc.org/
For the best Hawaii & Pacific Basin surf forecast: mailto:[e-mail]

Random Thought for this Nanosecond
Very funny, Scotty. Now beam down my clothes.



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Date: Thu, 13 Aug 1998 08:10:29 +0200
From: Vyvey Jan <[e-mail]>
Subject: AW: AW: (fractint) Corrupt save / return to picture - display mo

I agree.

When you have only one OS on your PC, you really don't need System
Commander.
Again we see that Micrsoft tries to do what others (OS/2,..) already do
for years.

Jan
>
>Don't know about you, but Fractint 19.6 runs quite
>happily under OS/2 for us, with no need for booting DOS.
>Unfortunately, can't do the same thing on the same
>hardware with W95! ;-)
>
>And why spend money for System Commander when OS/2's Boot
>Manager works just fine?
>
>On 12 Aug 98 at 10:10, Vyvey Jan wrote:
>
>> Everytime I read in this mailing list about problems
>> with fractint (most of the time with the video) it's
>> because one starts fractint in a dos box from without
>> WIN95 or (recently) WIN98 or whatever DOS box it may be.
>>
>> Let me gave you one good advice: Run Fractint directly
>> from 100 % pure DOS, then it's good, beautiful and FAST.
>>
>> And if you want to use other operating systems on the
>> same computer, do as I do and install the software
>> bootmanager called SYSTEM COMMANDER that gives you the
>> opportunity to start your PC in DOS, WIN311, WIN95,
>> WIN98, WINNT, OS2, Linux, ot whatever OS you have and
>> want to use. I have on my PC a partition with DOS622,
>> one with WIN311 and one with WINNT40. When you want to
>> use another OS, simply reboot your PC, choose the OS and
>> start (without anything resident of course) your OS in
>> the circumstances that are best for that OS (and
>> fractint runs best in DOS of course).
>
>Another blast of bits from David
>Visit our not-so-boring web page: http://www.aloha.net/~shauna/
>Visit the Hawaii Astronomical Society: http://www.hawastsoc.org/
>For the best Hawaii & Pacific Basin surf forecast: mailto:[e-mail]
>
>Random Thought for this Nanosecond
>Very funny, Scotty. Now beam down my clothes.
>
>
>
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>Post Message:   [e-mail]
>Get Commands:   [e-mail] "help"
>Administrator:  [e-mail]
>Unsubscribe:    [e-mail] "unsubscribe fractint"
>

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Date: Thu, 13 Aug 1998 10:05:47 +0200
From: Joe Pearson <[e-mail]>
Subject: (fractint) Disk-video takes longer?

Here's something I've only just noticed.  Disk-video calculation seems
to take much longer for the same image at the same resolution than real
video. Is this generally true and if so why?

Some examples, all at 640x480x256 (the disk video mode is one I fudged
myself):
       Under windows   Command prompt only
       real     disk     real     disk
1       2.42    20.48     1.98    13.24
2       3.79    20.49     2.91    14.17
3      39.17  1:00.37    27.18    40.42
4    4:46.87  5:31.59  4:22.71  4:46.43

By the way this is the first time I've bothered to reboot to DOS to run
fractint!  Looks like there is a real speed advantage.  Maybe I'll be
using it more, but only for batch generation overnight.

Joe

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Date: Thu, 13 Aug 1998 11:55:48 +0200
From: Vyvey Jan <[e-mail]>
Subject: AW: (fractint) Disk-video takes longer?

Joe,

You're right
You have to consider two aspects:
- - disk access "IS" always slower dan video access
- - it depends also of your calculation method (tesseral, guessing,
boundary, ...)

Jan

>
>Here's something I've only just noticed.  Disk-video calculation seems
>to take much longer for the same image at the same resolution than real
>video. Is this generally true and if so why?
>
>Some examples, all at 640x480x256 (the disk video mode is one I fudged
>myself):
>       Under windows   Command prompt only
>       real     disk     real     disk
>1       2.42    20.48     1.98    13.24
>2       3.79    20.49     2.91    14.17
>3      39.17  1:00.37    27.18    40.42
>4    4:46.87  5:31.59  4:22.71  4:46.43
>
>By the way this is the first time I've bothered to reboot to DOS to run
>fractint!  Looks like there is a real speed advantage.  Maybe I'll be
>using it more, but only for batch generation overnight.
>
>Joe
>

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Date: Thu, 13 Aug 1998 12:09:41 +0200
From: Joe Pearson <[e-mail]>
Subject: RE: (fractint) Disk-video takes longer?

Jan, you too are right ... but doesn't fractint's "disk-video" mode use
memory not disk?  I don't see any disk activity while it's calculating.
All examples given are using solid guessing.

Joe

>Joe,
>
>You're right
>You have to consider two aspects:
>- disk access "IS" always slower dan video access
>- it depends also of your calculation method (tesseral, guessing,
>boundary, ...)
>
>Jan
>
>>
>>Here's something I've only just noticed.  Disk-video calculation seems
>>to take much longer for the same image at the same resolution than real
>>video. Is this generally true and if so why?
>>
>>Some examples, all at 640x480x256 (the disk video mode is one I fudged
>>myself):
>>       Under windows   Command prompt only
>>       real     disk     real     disk
>>1       2.42    20.48     1.98    13.24
>>2       3.79    20.49     2.91    14.17
>>3      39.17  1:00.37    27.18    40.42
>>4    4:46.87  5:31.59  4:22.71  4:46.43
>>
>>By the way this is the first time I've bothered to reboot to DOS to run
>>fractint!  Looks like there is a real speed advantage.  Maybe I'll be
>>using it more, but only for batch generation overnight.
>>
>>Joe
>

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Date: Thu, 13 Aug 1998 12:31:50 +0200
From: "Dean-Christian Strik" <[e-mail]>
Subject: Re: (fractint) Disk-video takes longer?

Joe wrote:

>Here's something I've only just noticed.  Disk-video calculation seems
>to take much longer for the same image at the same resolution than real
>video. Is this generally true and if so why?

I guess it's because fractint writes directly to the disk, which is a lot
slower than to video ram. I don't use disk video modes often (fractint works
fine for me in 9x - until I press the windows button or something like the
really annoying 'Disk Low - Clean up disk' message of win98), but when i do, i
copy the fractint directory to a ramdisk and execute it from there. I believe
this works.
The dos ramdrives - i think they aren't supplied with dos7.x anymore - need
usually be loaded from config.sys and although i use dos6.21 ramdrive.sys,
windows works fine with these.
When you install the ramdisk, make sure to set the command line parameters
right. Oh, and it might be a good idea if you choose a drive letter that
exceeds your cdrom drives etc.

Christian



- -----Oorspronkelijk bericht-----
Van: Joe Pearson <[e-mail]>
Aan: 'fractint list' <[e-mail]>
Datum: donderdag 13 augustus 1998 10:05
Onderwerp: (fractint) Disk-video takes longer?







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End of fractint-digest V1 #271
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