On 9-11-2017 7:40, Kenneth wrote:
> "Kenneth" <kdw### [at] gmailcom> wrote:
> 
>>
>> You almost had it: Light_group of object and light_source, ALONG WITH
>> no_shadow for the wall.
>>
> 
> Hmm, for your real scene, I think there is still a problem: How to get your wall
> to cast its own shadows from other lights in the scene. With my test set-up, it
> doesn't do that, as the wall is necessarily made no_shadow in order to work
> correctly :-/
> 
> I tried adding an identical NO_IMAGE wall into the light_group (without the
> no_shadow tag), but that doesn't work-- this extra wall again blocks the light
> to the sphere object.
> 
> My past use of this set-up never needed the 'wall object' to cast its own shadow
> (I was shining a light up through a no_shadow height_field.) I wish I could
> suggest a workable solution...
> 
> 

It doesn't matter. I am still going to study your little test scene as 
it provides some interesting possibilities. Thanks indeed for your 
effort though.

-- 
Thomas

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Am 09.11.2017 um 07:08 schrieb Kenneth:
> clipka <ano### [at] anonymousorg> wrote:
> 
>>
>> Did you try no_<https://youtu.be/_euDhMDDRq4>?
> 
> That video is blocked in the U.S. :-(  It probably contains confidential State
> Secrets...

British State secrets, if anything.

Nothing spectacular to see though. Just substitute any audio copy of
Mike Oldfield's "shadow on the wall" ;)

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Am 09.11.2017 um 09:20 schrieb Thomas de Groot:
> On 8-11-2017 14:27, William F Pokorny wrote:
>> Have you tried the no_shadow object qualifier on your wall object?
>>
> 
> Incredible! Just adding no_shadow does the trick indeed and exactly as I
> need it, without the light_group even. I had not thought of this at all
> as the name implies that the object does not cast shadows, not that it
> also becomes transparent to the light. This is not implied in the docs.

Uh... and what exactly would "not cast shadows" do, if not make the
object "transparent to the light [directly from light sources]"?

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On 9-11-2017 13:37, clipka wrote:
> Am 09.11.2017 um 07:08 schrieb Kenneth:
>> clipka <ano### [at] anonymousorg> wrote:
>>
>>>
>>> Did you try no_<https://youtu.be/_euDhMDDRq4>?
>>

To tell the truth, it took me some while to get the pun... ;-)
(I am slow)

>> That video is blocked in the U.S. :-(  It probably contains confidential State
>> Secrets...
> 
> British State secrets, if anything.
> 
> Nothing spectacular to see though. Just substitute any audio copy of
> Mike Oldfield's "shadow on the wall" ;)
> 

Maybe those ladies in black leather are considered shocking for US 
viewers? ;-)

-- 
Thomas

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On 9-11-2017 13:46, clipka wrote:
> Am 09.11.2017 um 09:20 schrieb Thomas de Groot:
>> On 8-11-2017 14:27, William F Pokorny wrote:
>>> Have you tried the no_shadow object qualifier on your wall object?
>>>
>>
>> Incredible! Just adding no_shadow does the trick indeed and exactly as I
>> need it, without the light_group even. I had not thought of this at all
>> as the name implies that the object does not cast shadows, not that it
>> also becomes transparent to the light. This is not implied in the docs.
> 
> Uh... and what exactly would "not cast shadows" do, if not make the
> object "transparent to the light [directly from light sources]"?
> 

Well, my thoughts did not go into that direction to tell the truth. Just 
no shadows, without implications.

-- 
Thomas

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clipka <ano### [at] anonymousorg> wrote:

> Uh... and what exactly would "not cast shadows" do, if not make the
> object "transparent to the light [directly from light sources]"?

I wasn't gonna say it....   :|

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Thomas de Groot <tho### [at] degrootorg> wrote:

>
> Maybe those ladies in black leather are considered shocking for US
> viewers? ;-)
>

Ladies in black leather, eh? Well, maybe *that* explains the actual YouTube
message I'm seeing, "This video is blocked in your area"  My area is the city of
Virginia Beach, in the U.S. state of Virginia-- which just happens to be the
home of televangelist Pat Robertson's sprawling religious/conservative empire.
(BTW, it's HUGE and influential here, like an octopus with 100 tentacles.)

Hmm, time to protest!! "I demand ladies in black leather!".

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On 09/11/2017 16:39, Kenneth wrote:
> Hmm, time to protest!! "I demand ladies in black leather!".

You and me too. ;-)

-- 

Regards
     Stephen

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Le 17-11-09 à 01:40, Kenneth a écrit :
> "Kenneth" <kdw### [at] gmailcom> wrote:
> 
>>
>> You almost had it: Light_group of object and light_source, ALONG WITH
>> no_shadow for the wall.
>>
> 
> Hmm, for your real scene, I think there is still a problem: How to get your wall
> to cast its own shadows from other lights in the scene. With my test set-up, it
> doesn't do that, as the wall is necessarily made no_shadow in order to work
> correctly :-/
> 
> I tried adding an identical NO_IMAGE wall into the light_group (without the
> no_shadow tag), but that doesn't work-- this extra wall again blocks the light
> to the sphere object.
> 
> My past use of this set-up never needed the 'wall object' to cast its own shadow
> (I was shining a light up through a no_shadow height_field.) I wish I could
> suggest a workable solution...
> 
> 

Any object in a light_group will always cast shadows for any light in 
the scene. The light in the light_group can also get shadowed by any 
object outside the light_group.

The light(s) in a light_group can only illuminate objects that are part 
of the same light_group.
The objects of the group don't receive illumination from lights outside 
of the group unless you add "global_lights on" to the group.

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On 11/09/2017 07:51 AM, Thomas de Groot wrote:

> Maybe those ladies in black leather are considered shocking for US 
> viewers? ;-)
> 

If they were being shot, or hacked up, that'd be ok.  But just standing 
there looking good? My sensitive eyes!

-- 
dik

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