Multiple Camera Camera-mapping

[christiangreet]

Multiple camera camera-mapping? Is there such a thing for Maya?

I read about it being done on starwars, i hear there is a multiple camera mapping shader for Max but i cant find anything like it for Maya.

Dose it even exist?

I would like to camera-mapp my object from several angels and have it affect a single shader so i can do more comprehensive camera moves.

Is ther no other way then rendering out several layers and merging it in post?

[drblacksnake]

are You talking about CreateUVsBasedOnCamera?
several layers of what?

[christiangreet]

I use camera mapping a lot at work. I find it a grate solution to achieve fast results for all sorts of problems.
On my latest project i started camera-mapping onto animated characters to give them a hand painted feel. I also am mapping a alpha channel to give the characters blurred edges. I use a textur reference object to avoid swimming texture. It all works surprisingly well. But as soon as the character starts actually rotating around his own axes my camera mapping will fall apart and i have to repaint and remap for the new position. Depending on the action of the character i end up with 4 to 5 mappings per shot. I was wondering if there is a solution to set up several cameras ( say 4 cameras: back , front, left and right ) and have them all project a painting onto my character . Depending on what angle my render camera is looking at the object from it will use the appropriate camera mapped projection.

[drblacksnake]

I guess You should learn more about what is UVmapping in Maya. And option I've mentioned is what stands for "camera projection". Also look for automaticMapping and all other projection methods.

[christiangreet]

not to sure if we are talking about the same thing here.

Maybe i am not being clear enough
just to avoid confusion:

http://www.digitalartform.com/archives/200...projecti\_1.html

this is camera mapping. usually used to recreate photoreal environments.

however i am trying to use this technique in a more advanced way.

UV mapping is not going to work in this instants. If i map a painted surface onto geo it will just look like a painting wrapped around an object. However if i use camera mapping i can give it a flat painted look but maintain parallax.

[drblacksnake]

Have You read mapping articles in manual? Have You compared results from Projection node and UVsBasedOnCamera?
If You want to blend multiple projections, then You should figure out how to set up mutual masking between projections - You'll face it in any way wether projection nodes or multiple uv-sets are used. It could be more easily to learn how to tailor UVs without using complex shading networks that make renders slow.

[joojaa]

or project bake project bake and blend in photoshop the way it works right!

[mrrat]

Is this what you are looking for? www.gfryart.com/index.php/tutorials/maya/43-basic-maya-multi-projection-setup-for-matte-painting