garageCube

Hi All,

I'm new to MadMapper and Mac - both are great!!!
I'm trying to project on a corner (basically like inner side of a cube) and make a 3d illusion of a spinning box.
I managed to make the 3d illusion when projecting with 1 viewport (on the floor), and on 2 viewports of the corner (on the floor + one of the walls).
The problem is when I'm trying to project on 3 surfaces (right wall, left wall, floor). I don't know how many viewports I need, and how to arrange them on the output screen.
I attached link at the bottom to my videos of the 3 option (the 2 that worked: single and double viewports, and the third that didn't), a picture of the madmapper input and output of the option that didn't worked. (linked because forum file size limit).

If there are any "algorithm" on how to select the viewports, and someone could explain it...
If someone can (please, please, please) assist and maybe sketch the surfaces scheme that should work, I'll appreciate it.

The project that I'm working on is a final presentation of my university final project and I need it to work desperately. thanks If someone can help.
Thanks a lot!!!

attachments:
1 viewport: https://dl.dropboxusercontent.com/u/468 ... orking.MOV
2 viewports: https://dl.dropboxusercontent.com/u/468 ... orking.MOV
3 viewports (not working): https://dl.dropboxusercontent.com/u/468 ... orking.MOV
madmapper input: https://dl.dropboxusercontent.com/u/468 ... wports.JPG
madmapper output: https://dl.dropboxusercontent.com/u/468 ... wports.JPG

It's easier to explain this in photos...
https://jumpshare.com/b/dqPTP6uBpomhiJSwtUE1

The biggest issue, is that projecting on multiple surfaces for a 3D illusion will only work from a single view point. Also if you remember MagicEye books, some people can see this some wont be able to see it. If that's the case, have them look threw some sort of 2D view port. Have them look at the illusion threw there camera phone for example, it's sometime easier to see the illusion that way.
Also we had talked about this (single surface) in an older thread. (3D illusion workflow) Take a look at the videos I posted explaining this.
Good luck, and let us know how it goes.

Hi NateMac,

Thanks.
I tried it on a single surface and it works great. But what I'm trying to do is to project on 3 surfaces, and for that it doesn't work. 2 out of 3 surfaces are ok (the right and left surfaces). the bottom surface is not OK - it is deformed and doesn't fit to the other 2 surfaces.
I tried all sort of things (spacial scanner, all kinds of projection experiments with surfaces and MadMapper). I managed to project on 3 surfaces and it looks OK from the projector POV (I literally looked as closer as I can to the beamer center. also it was without the MadMapper help - just played my video file), but not from the spectator POV. If someone can please help with that - I'm sure I'm doing something wrong...
I attached the videos of the good and bad projection, and also my MAD file.

Thanks,

Shmulik

1. Projector POV good (no MadMapper): https://dl.dropboxusercontent.com/u/468 ... ntGood.MOV
2. Spectator POV bad: https://dl.dropboxusercontent.com/u/468 ... putBad.MOV
3. My movie file: https://dl.dropboxusercontent.com/u/468 ... 1-0250.avi
4. my MAD file: https://dl.dropboxusercontent.com/u/468 ... stCube.mad

3 axis projection might be easier to achieve when disabling perspective-correct in your quad and using 4-corners warping instead.

you've made your source footage from the projector viewpoint, not the audience viewpoint.
that's why it doesn't work no matter what you do.
move your camera over to where your audience is.
then split this up in MM