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I can't see the projected image on mirror

Posted: Fri Aug 15, 2008 5:14 am
by sandykoufax
Hi, all.

I've tested this with sunlightrocker's great tutorial.

http://www.maxwellrender.com/forum/view ... 046#175046

but why I can't see the projected image on mirror?

Image

The box of the center is a projector ( :wink: )

Plan on the right side has mirror material.

Is this physically correct?

Posted: Fri Aug 15, 2008 8:27 am
by bejack
can´t see your image....

Posted: Fri Aug 15, 2008 9:52 am
by sandykoufax
I've changed the image link.

Posted: Sat Aug 16, 2008 2:12 am
by Becco_UK
Is the light being projected through glass - if so, I don't think that Maxwell can render caustics in reflections?

Posted: Sat Aug 16, 2008 4:05 am
by Bubbaloo
That's very interesting.

Posted: Sat Aug 16, 2008 4:52 am
by lebbeus
yeah--the projector doesn't even show up :shock:

Posted: Sat Aug 16, 2008 5:05 am
by rshanks
You're not a vampire, are you? :lol:

Posted: Sat Aug 16, 2008 3:52 pm
by Bubbaloo
lebbeus wrote:yeah--the projector doesn't even show up :shock:
I think it's closer to the camera so it is not in the frame (in the mirror). An optical illusion.

Posted: Mon Aug 18, 2008 12:16 am
by m-Que
Hmm...try turning the projector, so that it would project the light on the mirror and reflect it back on the wall. I wonder if the reflection will be seen on the wall. It might give a clue if it is light that can't be reflected or it is actually the mirror that doesn't reflect the light.

Posted: Mon Aug 18, 2008 2:27 am
by lebbeus
Bubbaloo wrote:
lebbeus wrote:yeah--the projector doesn't even show up :shock:
I think it's closer to the camera so it is not in the frame (in the mirror). An optical illusion.
yeah--didn't think of that…I was pretty distressed and perplexed at the thought though :oops:

Posted: Mon Aug 18, 2008 3:16 am
by Bubbaloo
Next Limit, wanna comment on this? It's keeping me up at night. :wink: If I had the patience/time to model a projector setup, I'd test it too.

Posted: Mon Aug 18, 2008 4:17 am
by lebbeus
Sandy, could you post the scene?

Posted: Mon Aug 18, 2008 12:58 pm
by Becco_UK
I still think that if the image is being projected through glass it becomes a caustic which isn't going to be seen in reflections. This is a possible known restriction but it would be nice for Next Limit to comment.

Posted: Mon Aug 18, 2008 1:05 pm
by KurtS
I think it starts showing up at SL 30

Posted: Mon Aug 18, 2008 1:37 pm
by sandykoufax
lebbeus, here is the scene, but it's not exactly the same with above image because that scene is just for test.
http://rapidshare.com/files/138200841/project.rar.html

There are two files in it : one is a mxs file and another is a max file.

And there are still a bug in 3dsmax plugin.
When you open the max file and export it to mxs file and open it in Mst, you can find some object is in unexpected position.

:wink: