• Adobe After Effects

  Cast shadow but not show the actual floor?

  Posted by Mark Gwynne on February 23, 2006 at 11:01 pm

  Hi there,
  I have a simple wall and floor (ae 3d) and i’m shinning a light on to the wall and wish to cast a shadow on to the floor but not show the floor.

  Can this be done?

  Cheers for any insight
  regards
  Mark

  Dan Ebberts

  

  replied 20 years, 7 months ago 2 Members · 5 Replies
• 5 Replies

• 

  Dan Ebberts

  February 23, 2006 at 11:41 pm

  Recipe for shadow-catching invisible layer:

  Use a white solid.
  Set mode to Multiply.
  Accepts Shadows = on.
  Accepts Lights = off.

  Dan
• 

  Mark Gwynne

  February 24, 2006 at 10:32 am

  Yes I have tried that but it doesnt seem to work.
• 

  Dan Ebberts

  February 24, 2006 at 2:19 pm

  For it to work there has to be something behind the shadow-catching layer. It doesn’t work against just the background color of the comp.

  Dan
• 

  Mark Gwynne

  February 24, 2006 at 8:55 pm

  Thanks Dan,
  Yes I do understand that. It works fine but as soon as you hit accecpts lights to no the shadow disapears for some reason.

  regards
  Mark
• 

  Dan Ebberts

  February 24, 2006 at 11:20 pm

  I’ve posted a demo 6.5 project here:

  http://www.motionscript.com/demos/shadow-catcher.aep

  Dan

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