Shadows

Hi,
I'm developing an augmented reality app.
The object showed when target is detected project shadows on a white plane (now).
there is a method to have shadow catcher plane under 3D model when it is rendered in app so shadows seems projected on real plane in camera image?
I'm tring to illuminate my scene using light map and I want have shadows of the object rendered over the real printed target.

Someone have some idea?



Tank You

 

Why not make a fake shadow?
We do use a 3d program to render a shadow map for the ground.
That shadow map can then be used as an alpha channel for an black image.
Now just make a plane with a transparent shader under the object , assign the texture : you have your nice fake shadow.
(Works ony for plain ground and not part animated objects (We did use it for cars))

Or your way (Not tested) : http://forum.unity3d.com/threads/11...nsparency-shader?p=81704&viewfull=1#post81704