Polygons always facing camera

Introduction to Maya - Modeling Fundamentals Vol 2

This course will look in the fundamentals of modeling in Maya with an emphasis on creating good topology. It's aimed at people that have some modeling experience in Maya but are having trouble with complex objects.

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# 1 13-08-2012 , 10:25 AM

Registered User
Join Date: Nov 2011

Posts: 10

Hi,

My problem is almost strange, and I don't know if I can explain myself very well..

What i have: curved surface (basically a side surface of a cilinder that don't turns around over 360 degree.. but that is almost unfolded)

What I whant: each polygon that compose the curved surface must always have his normal on the camera side (but mantaining his normals propertis..).

So, for example, if I have a plane and a camera that turns around it, the normal of that plane must reverse each time the camera turn on the "back" of the plane so I can see the shaded face instead of the "invisible" back of the same face.

I haven't mentioned that I have double sided disabled, and I don't whant enable it because this doesn't solve my problem with normals direction.

Thanks for any help.

(And apologize for my creepy english)

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# 2 13-08-2012 , 10:42 AM

Registered User
Join Date: Apr 2011

Location: Dortmund, Germany

Posts: 229

you can simply extrude faces a bit.

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# 3 13-08-2012 , 11:02 AM

Registered User
Join Date: Nov 2011

Posts: 10

well.. yes, but I prefer to mantain as low as possible my polycount.

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# 4 13-08-2012 , 03:40 PM

Super Moderator
Join Date: Dec 2006

Location: South FL

Posts: 3,522

You could try aim constraining the geometry to the camera. You can even create a locator, parent it to the geometry and then aim constrain the camera to the locator so the camera and geometry are always looking at each other.

- Genny
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