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Is it possible to hide an object but still display its shadow?

Posted By Ibis Fernandez 11 Years Ago
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Is it possible to hide an object but still display its shadow?

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Rampa
Rampa
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I wonder if you could do it in two passes that you then mask together. It is possible to export just a mask of the avatar. So if you shoot the scene first with your avatar casting the shadow, then again without the avatar, and a third just rendering the mask, and then using the mask to display the "clean background inside it and the shadowed background outside it.
Cricky
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I was able to get "real close" by taking the "Opacity" to 1 and the "Shadow Threshold" to 0. You'll have to do that for each Diffusion Map of the avatar...Upper, Lower, etc.

It also might help to take the "Strength" of the Diffusion Map all the way down or delete it all together and depending of the overall lighting of your scene make the Material Settings Diffuse Color black or white. This should work for a prop as well as an avatar which I used.

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justaviking
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I'm not sure if there is a "correct" option (have an invisible object cast a shadow), but there is a slim chance this trickery might do the job...

What if you have your object out of camera view, located so it casts the shadow where you want it?  You'd need really "sharp" shadow outlines to make up for the distance between the object and where the shadow lands.

Might be worth a try.

Here's a lame sketch, drawn in MSPaint with a mouse...





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Ibis Fernandez
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Been on winter vacation, just came back and am happy to see that ic6 is out!

My first of many questions to come is this....

I would like to have a prop on the stage and light it in a way that it casts a shadow on other props. This is great so far, but is it possible to hide the prop so that only its shadow is displayed. This would be HUGE.

So far any attempts to hide this prop will also hide the shadow :(

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