Polygons always facing camera

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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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