Question of the day: Shadow without shadow receiving object?

kiriko

I've got two objects, where object A would throw a shadow on object B. It's simple as that.

How can I render object A's shadow on a transparent background - without object B actually being visible in the rendering output? I figured out how to render objects A's shadow without object A being actually visible by using a rendering tag, but got stuck with the question above.

Any ideas?

SurfingAlien · 14.11.2009, 16:41

not sure I understood what you mean but you can try to put the new Shadow material on your object B.
If object A is a pig, object B a plane and you have some kind of background in you camera (color, image or hdri) you end up with something like this:
shot1 - pig+hdri+plane with standard material
shot2 - pig+hdri+plane with shadow material
you need Cheetah 5.x for this. hope it helps...

cheers,
A

kiriko · **Ok, found the answer -** 14.11.2009, 16:51

Found the answer here guys.
http://www.cheetah3d.de/forum/showthread.php?t=4615

Thanks SurfingAlien for your answer too!

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	(#1)
kiriko (Offline) Neuer Benutzer Posts: 25 Join Date: 17.09.2009	Question of the day: Shadow without shadow receiving object? - 14.11.2009, 16:22 I've got two objects, where object A would throw a shadow on object B. It's simple as that. How can I render object A's shadow on a transparent background - without object B actually being visible in the rendering output? I figured out how to render objects A's shadow without object A being actually visible by using a rendering tag, but got stuck with the question above. Any ideas?

	(#2)
SurfingAlien (Offline) Erfahrener Benutzer Posts: 2,456 Join Date: 13.03.2009 Location: Italy	14.11.2009, 16:41 not sure I understood what you mean but you can try to put the new Shadow material on your object B. If object A is a pig, object B a plane and you have some kind of background in you camera (color, image or hdri) you end up with something like this: shot1 - pig+hdri+plane with standard material shot2 - pig+hdri+plane with shadow material you need Cheetah 5.x for this. hope it helps... cheers, A Attached Images

	(#3)
kiriko (Offline) Neuer Benutzer Posts: 25 Join Date: 17.09.2009	Ok, found the answer - 14.11.2009, 16:51 Found the answer here guys. http://www.cheetah3d.de/forum/showthread.php?t=4615 Thanks SurfingAlien for your answer too!