Produce beamer light

[NicoB]

Hej,

does anyone know how to produce a "fake" beamer light (rectangular) on a wall.
I cannot place a rectangle just in front of the wall with a light material and maybe alpha on it,
because the client want´s to place objects in front of the wall which should be part of the beamer image (shadow etc.).

I have tried placing a bitmap into the "light color" slot and also with light material..no success.

Would be great to figure this on out.

Thank you!

[maru]

It's hard for me to imagine what you described. Could you post an example image of what you would like to achieve?

[NicoB]

Hej Maru,

first thank you for the ultra fast response :)
Attached you can find an image (ugly, but it´s exactly the point).

The light needs the image / texture in it and has to cast shadows..dont know yet how to reproduce this with corona light´s.

Thank you very much!

[maru]

Here are my results. Looks like it is virtually impossible to do using Corona lights as they will always create blurry results (I guess this is physically correct - it would be sharp only if the distance between the light and wall would be 0). But it is possible using standard Max lights (spot in my case) + projector map. Check the file (2015+2014 version).

[Paul Jones]

Try using a standard spot with a map in projector slot. Would be nice to be able to get a sharp projection from corona lights though.

[NicoB]

Hej maru,

it just works nice :)
If I even set the spotlight "type" to rectangle I do get the result I wanted.

@ paul jones:
I think that´s what maru just did.

Thank you!

[Paul Jones]

Yeah, I was a bit slow replying ;-)