-
A way to cast a shadow from a 2d object with light ?
Hey everyone !
I was wondering if theres a way to make a 2d object (defined as 3d for light perposes) cast a shadow , but make the shadow to look like its casted on the ground rather than behind the character..
for example , taking an image of a penguin and compose it over a video of a desk, and I want the penguin to cast a shadow on the desk. Is there a way to make a Solid plane recieve a shadow but make the plane itself invisble or somthing ?Thanks in advance ! ,
-Eran-
replied 19 years, 6 months ago 5 Members · 5 Replies
-
5 Replies
-
Yeah, it’s something like this: Orient a white solid to match the perspective of the desk, set its mode to Multiply, Accepts Shadows = On, Accepts Lights = off. I think. 🙂
Dan
-
Just to follow up on this, cause I’ve often had trouble with lights. I have comped a test scene like the one described and had some text (that is casting a shadow on the desk) move towards the camera and the light. But all of a sudden half way through the move the shadow cuts out. I have viewed the animation from all angles and the text is not going behind the light or cutting through the desk, it moves correctly through space, but it just cuts out. Any ideas?
cheers
-
You might want to check out Trapcodes Lux. I have never used but the demos I have seen maybe what you’re looking for.
-
What Lux does is to provide a visible light source for AE’s lights. Without Lux, all you get are the light’s intensities coming form an invisible source – Lux gives you that source.
In this case, Lux won’t solve the problem.
HTH
Roland Kahlenberg
broadcastGEMs
customizable animated backdrops with Adobe After Effects project files -
If your text layer is moving, it could very be that the light isn’t hitting it at an angle to allow for the shadow to appear on the desk. Essentially, there are three lyers to content with, the light, the object and the shadow. If they do not form a straight line then there may be occasions when the shadow will not appear.
Perhaps Dan can come up with an Expression script to prevent such occurrences.
HTH
Roland Kahlenberg
broadcastGEMs
customizable animated backdrops with Adobe After Effects project files
Reply to this Discussion! Login or Sign Up