POV-Ray : Newsgroups : povray.beta-test : Issues with Trace-command and Isosurface Server Time: 26 Sep 2020 09:27:56 GMT
  Issues with Trace-command and Isosurface (Message 1 to 6 of 6)  
From: Schwan379
Subject: Issues with Trace-command and Isosurface
Date: 18 Oct 2006 19:20:01
Message: <web.45367d932f1ac4de72d86b490@news.povray.org>
In my Scene I use an Isosurface as Ground and places gras, stones, old
leaves, etc with help of the trace-command.

i) On Pov 3.6.1c it works, but in Pov 3.7 (Beta 15 and 16) the Objects
didn't hit the Ground - it seems, as the Objects as once has been rotatet.

ii) If I use 2 Trace - commands and 2 Target objects (1 for Position and 1
for the Places where "not to plant gras"), the objects hit the ground - but
the free places has moved. It looks like a rotation, ~ the same Amount as in
i).
With Pov 3.6 the method works correctly.

No File at the Moment. If someone needs one, I will see, that I can tackle
down the Scene to the Problem - at the Moment it is far to big to be
posted/mailed/etc.

By the way: With the new bounding Method I achieved a speedup of >50 times
in this scene (ok, there are still lots of render-errors due to the
Problems with transparency)


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From: Chris Cason
Subject: Re: Issues with Trace-command and Isosurface
Date: 21 Oct 2006 12:34:12
Message: <453a13c4$1@news.povray.org>
Schwan379 wrote:
> No File at the Moment. If someone needs one, I will see, that I can tackle
> down the Scene to the Problem - at the Moment it is far to big to be
> posted/mailed/etc.

A scene would help somewhat, so if you can please do so.

thanks,

-- Chris


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From: Schwan379
Subject: Re: Issues with Trace-command and Isosurface
Date: 21 Oct 2006 21:05:00
Message: <web.453a8b1a8e8b97927049d4970@news.povray.org>
Chris Cason <del### [at] deletethistoopovrayorg> wrote:
> Schwan379 wrote:
> > No File at the Moment. If someone needs one, I will see, that I can tackle
> > down the Scene to the Problem - at the Moment it is far to big to be
> > posted/mailed/etc.
>
> A scene would help somewhat, so if you can please do so.
>
> thanks,
>
> -- Chris

http://blue.unix-ag.uni-hannover.de/~schwanck/Download/Pov37BetaTest/Weg_3.7_Test.zip

This should do.

-- Thomas


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From: Chris Cason
Subject: Re: Issues with Trace-command and Isosurface
Date: 23 Oct 2006 09:06:19
Message: <453c860b$1@news.povray.org>
The issue is caused by the wrong noise generator being used since the trace
command is issued prior to parse completion. As a work-around until the next
beta, run a simple scene that sets the noise generator (or allows it to
default, either way), then without exiting run your target scene.

-- Chris


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From: Schwan379
Subject: Re: Issues with Trace-command and Isosurface
Date: 23 Oct 2006 23:30:00
Message: <web.453d4f528e8b979216f4431a0@news.povray.org>
Chris Cason <del### [at] deletethistoopovrayorg> wrote:
> The issue is caused by the wrong noise generator being used since the trace
> command is issued prior to parse completion. As a work-around until the next
> beta, run a simple scene that sets the noise generator (or allows it to
> default, either way), then without exiting run your target scene.
>
> -- Chris

Ok, thank you.

I think, I will wait for a Beta without Issues with transparency befor I try
it again ;)

-- Thomas


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From: Thorsten Froehlich
Subject: Re: Issues with Trace-command and Isosurface
Date: 23 Oct 2006 23:48:22
Message: <453d54c6$1@news.povray.org>
Schwan379 wrote:
> Chris Cason <del### [at] deletethistoopovrayorg> wrote:
>> The issue is caused by the wrong noise generator being used since the trace
>> command is issued prior to parse completion. As a work-around until the next
>> beta, run a simple scene that sets the noise generator (or allows it to
>> default, either way), then without exiting run your target scene.
>>
>> -- Chris
> 
> Ok, thank you.
> 
> I think, I will wait for a Beta without Issues with transparency befor I try
> it again ;)

The noise generator is not related to transparency.

	Thorsten


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