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From: Thomas de Groot
Subject: Re: Making a DF3 file from a mesh2 object--> x-axis squeezing
Date: 25 Sep 2013 04:12:51
Message: <52429b03$1@news.povray.org>
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After some tests, I can say that the df3 is squeezed by about 25% along
the x-axis. This happens within the tga2df3.exe application. The
slice-making process is made correctly.
The easy solution is to scale the density file. Gilles Tran tells in his
MakeCloud documentation that the df3 file is generated upside down so
you have to scale <1,-1,1> when used as density file. Now, to compensate
the squeeze, you can replace that by scale <1.25,-1,1>.
Needless to say that this has also consequences for making clouds with
Gilles' macros although the outcome is less obvious to the eyes.
Thomas
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From: Thomas de Groot
Subject: Re: Making a DF3 file from a mesh2 object
Date: 26 Sep 2013 10:04:03
Message: <52443ed3@news.povray.org>
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Three df3 files for this ghost and x-axis correction.
The pinpoint lights are too strong though.
Thomas
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Attachments:
Download 'gt_df3_test.png' (100 KB)
Preview of image 'gt_df3_test.png'
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Thomas de Groot <tho### [at] degroot org> wrote:
> After some tests, I can say that the df3 is squeezed by about 25% along
> the x-axis. This happens within the tga2df3.exe application. The
> slice-making process is made correctly.
>
> The easy solution is to scale the density file. Gilles Tran tells in his
> MakeCloud documentation that the df3 file is generated upside down so
> you have to scale <1,-1,1> when used as density file. Now, to compensate
> the squeeze, you can replace that by scale <1.25,-1,1>.
If it is squeezed 25% it is scaled by 3/4; so shouldn't the correction be
<4/3,-1,1>?
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> Three df3 files for this ghost and x-axis correction.
>
> The pinpoint lights are too strong though.
>
> Thomas
Make them red and a little dimer...
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From: Thomas de Groot
Subject: Re: Making a DF3 file from a mesh2 object--> x-axis squeezing
Date: 27 Sep 2013 03:01:40
Message: <52452d54$1@news.povray.org>
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On 26-9-2013 18:06, Cousin Ricky wrote:
>
> If it is squeezed 25% it is scaled by 3/4; so shouldn't the correction be
> <4/3,-1,1>?
Well, forget about the 25% or whatever ;-) The effective correction
(for me at least) is 1.25. Just visual, on a box.
Thomas
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From: Thomas de Groot
Subject: Re: Making a DF3 file from a mesh2 object
Date: 27 Sep 2013 03:56:07
Message: <52453a17@news.povray.org>
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This seems to be a proper evil ghost :-)
I used a marble density instead of the spherical one.
Thomas
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Attachments:
Download 'gt_df3_test.png' (98 KB)
Preview of image 'gt_df3_test.png'
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Am 27.09.2013 09:55, schrieb Thomas de Groot:
> This seems to be a proper evil ghost :-)
>
Now I don't get the main theme from Ghost Busters out of my head, that's
scary!
-Ive
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From: Thomas de Groot
Subject: Re: Making a DF3 file from a mesh2 object
Date: 27 Sep 2013 06:59:27
Message: <5245650f@news.povray.org>
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On 27-9-2013 11:19, Ive wrote:
> Am 27.09.2013 09:55, schrieb Thomas de Groot:
>> This seems to be a proper evil ghost :-)
>>
> Now I don't get the main theme from Ghost Busters out of my head, that's
> scary!
You have been cursed my friend.
Thomas
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Thomas de Groot <tho### [at] degrootorg> wrote:
> This seems to be a proper evil ghost :-)
>
> I used a marble density instead of the spherical one.
>
> Thomas
Wonderful, I would expect crackle would yield good results too.
Best regards,
Michael
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>Thomas de Groot on date 27/09/2013 9.55 wrote:
> This seems to be a proper evil ghost :-)
>
> I used a marble density instead of the spherical one.
>
> Thomas
This ghost is an evil one... brr!
Paolo
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