Need some help with shadows

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Old 09 September 2012   #1
Need some help with shadows

Hello. In this image, you can see that I have a light shining through a window and onto a skeleton, but the shadow from the window is on the floor and I don't want it there. I do, however, want the skeleton shadow. Is there a way I can fix this?

http://i.imgur.com/Fpfe9.png
 
Old 09 September 2012   #2
Originally Posted by andrewmac12: Hello. In this image, you can see that I have a light shining through a window and onto a skeleton, but the shadow from the window is on the floor and I don't want it there. I do, however, want the skeleton shadow. Is there a way I can fix this?

http://i.imgur.com/Fpfe9.png


put a compositing tag on your window object and then turn of cast shadows.
 
Old 09 September 2012   #3
But wouldn't that then make the window object useless? I'm using that object to cast shadows on certain parts of the skeleton object. I just dot want the shadows on the floor.
 
Old 09 September 2012   #4
Duplicate your light and use the include/exclude list.

Light1 with shadow = include walls + skeleton

Light2 with shadow = include walls + floor

that way, the window will cast its shadow on both the skeleton and floor, but the skeleton won't cast its shadows on the floor (while still receiving it from the window).
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Old 09 September 2012   #5
I'm curious as to why you need to duplicate the light.

If he leaves the mode on Exclude and drags in the window object and disables Illumination (and maybe specular if required), then basically the light will illuminate the window, but not cast a shadow from it.
 
Old 09 September 2012   #6
He wants the shadow of the window in the scene and skeleton, so if you do this, the window will be bypassed altogether.
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Old 09 September 2012   #7
Originally Posted by fluffouille: Duplicate your light and use the include/exclude list.

Light1 with shadow = include walls + skeleton

Light2 with shadow = include walls + floor

that way, the window will cast its shadow on both the skeleton and floor, but the skeleton won't cast its shadows on the floor (while still receiving it from the window).


That worked, BUT what I want is the skeleton to cast a shadow and not the wall.
 
Old 09 September 2012   #8
Originally Posted by andrewmac12: That worked, BUT what I want is the skeleton to cast a shadow and not the wall.


Figured it out. Just reversed what you said. Thanks!
 
Old 09 September 2012   #9
But wait... I still want the window object to cast it's shadows on the guy. Just not on the floor.

Guys, this is complicated...
 
Old 09 September 2012   #10
Light 1 = window + wall + skeleton
Light 2 = skeleton + floor

That should do it?
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Old 09 September 2012   #11
Originally Posted by fluffouille: Light 1 = window + wall + skeleton
Light 2 = skeleton + floor

That should do it?


That does exactly what I need it to do, except look how the light is still shining on the upper half of his body, when it needs to be shaded.



So close...
 
Old 09 September 2012   #12
just make an object to block the light, set it to not be seen by camera but to cast shadows.
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Old 09 September 2012   #13
Indeed. If you have no physical wall/window, then you need to emulate that with an object somehow.
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Old 09 September 2012   #14
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