Hi,
I am working on Mike's fly lighting and animation now.
To simplify and To speed up this task, I am using my C4D->POV converter
for lights exporting, but I need some reference object in the C4D scene
to replace a fly (see attachments).

I can draw a BB box approximately, but if someone will show me the
way to calculate BB of arbitrary objects, I will be able to set up
lighting more accurately.

Thanks in advance.
--
YB

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Attachments:
Download 'fly_lights.png' (608 KB) Download 'fly.zip' (4749 KB)

Preview of image 'fly_lights.png'

yesbird <sya### [at] gmailcom> wrote:

> I can draw a BB box approximately, but if someone will show me the
> way to calculate BB of arbitrary objects, I will be able to set up
> lighting more accurately.


from the docs on functions:

min_extent(OBJECT_IDENTIFIER), max_extent(OBJECT_IDENTIFIER). The min_extent and
max_extent return the minimum and maximum coordinates of a declared object's
bounding box (Corner1 and Corner2), in effect allowing you to find the
dimensions and location of the object.


ingo

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On 01/04/2023 20:48, ingo wrote:
> from the docs on functions:
> 
> min_extent(OBJECT_IDENTIFIER), max_extent(OBJECT_IDENTIFIER). The min_extent and
> max_extent return the minimum and maximum coordinates of a declared object's
> bounding box (Corner1 and Corner2), in effect allowing you to find the
> dimensions and location of the object.

Thanks, ingo, this is exactly what I was expecting.
--
YB

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Le 2023-04-01 à 13:56, yesbird a écrit :
> On 01/04/2023 20:48, ingo wrote:
>> from the docs on functions:
>>
>> min_extent(OBJECT_IDENTIFIER), max_extent(OBJECT_IDENTIFIER). The 
>> min_extent and
>> max_extent return the minimum and maximum coordinates of a declared 
>> object's
>> bounding box (Corner1 and Corner2), in effect allowing you to find the
>> dimensions and location of the object.
> 
> Thanks, ingo, this is exactly what I was expecting.
> -- 
> YB
> 
> 
Remember that, when dealing with differences and intersections, the 
bounding box can be larger than the object.

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On 02/04/2023 01:52, Alain Martel wrote:
> Remember that, when dealing with differences and intersections, the 
> bounding box can be larger than the object.

Thanks, your comment will help me to avoid unpleasant surprises ).
--
YB

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hi,

yesbird <sya### [at] gmailcom> wrote:
> On 02/04/2023 01:52, Alain Martel wrote:
> > Remember that, when dealing with differences and intersections, the
> > bounding box can be larger than the object.
>
> Thanks, your comment will help me to avoid unpleasant surprises ).

sometimes a simple rotation will affect the bbox.  :-)  I wrote a macro to help
me with those.

<https://drive.google.com/file/d/1-ak9jRR7B6iNoQfchF_XMupNL6Wop5Oq/view?usp=sharing>


regards, jr.

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On 02/04/2023 10:52, jr wrote:
> sometimes a simple rotation will affect the bbox.  :-)  I wrote a macro to help
> me with those.
> <https://drive.google.com/file/d/1-ak9jRR7B6iNoQfchF_XMupNL6Wop5Oq/view?usp=sharing>

Thanks, another pitfall avoided.
--
YB

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