[Radiance-general] partly covered source

[Thomas Bleicher]

Jan

You could get the direction of the sun from your sky description and point
rtrace in that direction and only get the material (-om). You can add your
own variations to sample the whole disc to calculate the visible part of
the sun if that's what you need.

Thomas

On Tue, Jul 24, 2012 at 9:50 PM, Jan Wienold
<jan.wienold at ise.fraunhofer.de>wrote:

> Hi Giulio, hi all,
>
> unfortunately it doesn't work out safely. In total I have many, many cases
> to look at (in total 40000 timesteps x 33 points x 2geometries) and there
> are still many cases, when rtrace doesn't catch the sun.
> Since these are calculations for an expertise, which is used for a trial,
> I have to be absolutely sure not to miss any case...
>
> Is there any idea except calculating images ? Source subdivisions are
> unfortunately not possible when "source" is used...
>
> Thanks!
>
> Jan
>
>
>
>
> On 07/24/2012 02:13 AM, Jan Wienold wrote:
>
>> hi giulio,
>>
>> Yes!
>> The use of -dj helped, but only if I use also the -u option. Otherwise I
>> still get randomized zero values, also if I change -ds.
>>
>> thanks!
>>
>> jan
>>
>>
>>
>>
>> On 07/24/2012 01:35 AM, giulio antonutto wrote:
>>
>>> Jan,
>>> maybe you can fix it with -dj and oversampling?
>>> G
>>>
>>> On 24 Jul 2012, at 00:03, Jan Wienold wrote:
>>>
>>>  Hi all,
>>>>
>>>> I just encountered a strange different behavior between rtrace and
>>>> rpict:
>>>> If the sun ( using "source") is  covered in large parts (in that case
>>>> more than half) I can still "see" the uncovered parts in the image (=>this
>>>> is what I expect). In case I calculate at the same point and in the same
>>>> direction the illuminance with rtrace -I, I get zero contribution.  Is just
>>>> the center of the source description tested in that case? Any solution for
>>>> this for rtrace?
>>>> I just look for the sun, no sky description and use only direct
>>>> calculation (-ab 0) .
>>>>
>>>> Thanks,
>>>>
>>>> Jan
>>>>
>>>>
>>>>
>>>> --
>>>> Dr.-Ing. Jan Wienold
>>>> Head of Team Passive Systems and Daylighting
>>>> Fraunhofer-Institut für Solare Energiesysteme
>>>> Thermal Systems and Buildings
>>>> Heidenhofstr. 2, 79110 Freiburg, Germany
>>>> Phone: +49(0)761 4588 5133 Fax:+49(0)761 4588 9133
>>>> jan.wienold at ise.fraunhofer.de
>>>> http://www.ise.fraunhofer.de
>>>>
>>>> In office:
>>>> Mo,Tue: 8:30-18:00
>>>> We,Thu: 8:30-16:00
>>>> Fr:  8:30-15:30
>>>>
>>>>
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>>>
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>>
>>
>>
>
> --
> Dr.-Ing. Jan Wienold
> Head of Team Passive Systems and Daylighting
> Fraunhofer-Institut für Solare Energiesysteme
> Thermal Systems and Buildings
> Heidenhofstr. 2, 79110 Freiburg, Germany
> Phone: +49(0)761 4588 5133 Fax:+49(0)761 4588 9133
> jan.wienold at ise.fraunhofer.de
> http://www.ise.fraunhofer.de
>
> In office:
> Mo,Tue: 8:30-18:00
> We,Thu: 8:30-16:00
> Fr:  8:30-15:30
>
>
> ______________________________**_________________
> Radiance-general mailing list
> Radiance-general at radiance-**online.org<Radiance-general at radiance-online.org>
> http://www.radiance-online.**org/mailman/listinfo/radiance-**general<http://www.radiance-online.org/mailman/listinfo/radiance-general>
>
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