Hi Sketchup masters, could someone help me pls? I'm trying to create transparent material which will cast shadows. I used following tutorial for ""Skp Two Sided Material to hide the ceiling from the camera" http://goo.gl/S89ADF . Problem is that it doesn'work in my case - as attached screenshots (I shown walls with different holes to have different shadows/lighting on objects on the floor...). I want to see through the wall (from inside) but to keep shadows from the wall. Material which I created works only from outside. If I tried to rotate walls to fix it it didn't help.
I do not have an experience with 2 sided material so maybe there is some rule that shadows can be casted only when the source of light is on the side of material which is see throught and not that rays go throught material and cast shadows as is shown on pictures which I posted - the same material on the same objects but works only when sun is behind me.. I don't know..
On Chaos help say about 2Sided material exactly what I need but I don't know how to use it: http://goo.gl/owJRLc ("This can be very useful for architectural visualization, and can be used to look inside rooms with the appearance of the wall still affecting the illumination of the enclosed environment." )
Other questions how to do it are: Vray2Sided material vs SKP2 Sided material, Wrapped material? Alpha chanels? My goal is this (similar as exterior view which I can do - in the direction of the light beam), but view is from interier against the direction of the light beam.
Couldn't be a solution wrapped material?
My 2 sided material setting and this SketchUp model: http://leteckaposta.cz/151726154
![problem model renders & my goal problem model renders & my goal](/uploads/imported_attachments/rzAF_2sidedmat.jpg)