• Maxon Cinema 4D

  Movie with shadow

  Posted by Hans Meier on May 27, 2008 at 4:38 pm

  Hi,

  I guess that this has been asked a million times before, but I’m really stuck here.

  I have a simple animation of a cube, a light and a shadow on the floor.

  Now I want to render out the movie to use it in After Effects. I tried several things with After Effects Export and Multipass Rendering but somehow nothing really works out. What is the easiest way to achieve a rendered movie with transparent background BUT including the shadows on the floor (without showing the floor)?

  Sorry again! 🙂

  All the best

  Hans Meier replied 17 years, 11 months ago 3 Members · 5 Replies
• 5 Replies

• 

  Brian Jones

  May 27, 2008 at 10:18 pm

  https://www.maxoncomputer.com/tutorial_detail.asp?tutorialID=243 for starters
• 

  Randy Johnson

  May 28, 2008 at 5:49 am

  the link didnt work for me.
  So i have copied and pasted from the maxon FAQ: lighting section

  Problem
  How do you cast a shadow on an plane with only the shadow being visible, not the plane?
  Detailed Description

  How do you set up a scene so that you can render out a shadow of an object and composite a background image for the shadow to be cast on?
  Solution

  This is easily accomplished using the Compositing tag (R6/7: Render Tag). Add this tag to any shadow casting object(s) and disable the Seen by Camera option, while making sure Seen by Rays and Cast Shadows options are enabled.

  Add a compositing tag to the object containing the background image (a plane works best – background objects won’t work) and activate the Receive Shadows and Compositing Background options.
• 

  Hans Meier

  May 28, 2008 at 8:31 am

  Hi Brian and Randy,

  I’m aware of the compositing tag but it doesn’t seem to help me for what I’m trying to achieve.

  When I’m using the compositing tag, my render-file will have no floor. That’s correct – but there is also no shadow rendered.

  I tried using multipass-rendering and rendered the shadow only. That works, but then I have no transparency in the resulting pass-file.
• 

  Randy Johnson

  May 28, 2008 at 8:55 am

  Shadow passes dont have alpha they end up bright white..and the shadow. You need to multipy over your other layers.

  Also you use a compositing tag on both the object and the floor.

  /randy
• 

  Hans Meier

  May 28, 2008 at 9:43 am

  Randy,

  thank you so much! The multiply-tip was just what I needed.

  Thanks again…

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