Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
# 1 14-05-2006 , 04:29 PM
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Render shadows (with transparencies) no ground

I'm doing my first little project with live video + motion tracking. Now I’m having a problem with the shadows. I used the search & Google but nothing really worked.

For the proof of concept i made a cylinder on a plane. Then made the plane shade "use background". Then render. But when I open the tiff in Photoshop (or AE etc.) I get a white reflection and a shadow that is not transparent (not working.jpg).

What I am after is the wantthis.jpg

Does somebody have a few simple tips how to do this right. Or an *.ma with a cylinder and plane with the right settings so that I can figure it out for myself.

grt,
Rene
the Netherlands

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# 2 14-05-2006 , 04:29 PM
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want this:

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# 3 16-05-2006 , 03:47 PM
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it's possible that you may need to do a 2nd pass to extract exactly what you want. If you have some points go and download my render ID layers tute from the videos section here at SM. That will show you how you can extract just the top half of the cylinder.

user added image
A


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# 4 17-05-2006 , 06:04 PM
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hi toi la nguoi viet nam toi khong hieu lam tieng anh nen ai doc duoc noi dung nay ma co trong forum nay thi hay nhan lai cho toi


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# 5 17-05-2006 , 08:53 PM
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wtf???


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# 6 17-05-2006 , 10:20 PM
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i second that... user added image


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# 7 22-05-2006 , 11:02 PM
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# 8 25-05-2006 , 03:35 PM
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adjust the setting of your useBackground shader,

Specular Color should be black
Reflectivity = 0
Reflection Limit = 0
Shadow Mask = 1


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