nurbs projection

[svenip]

why you wanna use a nurbs cage ??? i guess (at least i hope) you just wanna project a texture to your mesh. this is very easy done. just apply a new shader to the material. go to the Attribute Editr. beside each channel is a texture sign. click on it and you will get the render node window. in there right on top left you'll find three choose buttons. instead of normal (which uses the actuall UV's of the Surface) you can switch on projection. now click on the texture you wanna apply to the channel. after that you will get three a projection node which is ,yes you're guessing right, projecting the texture to the surfaces. in the AE of the projection node you can switch between several types of them.

[lutz]

Applied as a projection my texture looks really upside down or inside out or something similar. Also a checker texture looks stretched in any way thinkable.
What is this projection mode useful for? I hoped to be able to apply a texture exactly as it is without having to do an exact UV mapping. Am I wrong?

Regards,
lutz

:airguitar
Hey Hoshi!

[svenip]

that's what projections are for. ok depending on the shape of your object it can still stretch (if e.g. the curvature is very high).

if you use poly you can layout your UV's to get a good result. if you use nurbs you can't layout them, but you could try to tunr on the texture fit in the AE of the Shape Node of the object.

that's what we must live fore, as sad as it is :hmm:

[lutz]

Stencil seems to be the mode that acts as a "projection" as I assumed before. My texture is applied as it did in normal mode. But I still have stretching areas when using normal mode (therefore using UV coordinates)
But when I draw dots, circles and lines of different width to the texture I can't see these additional properties on my texture when applied to the object. :rolleyes:
I can't follow that behaviour.

Regards,
lutz

[AroundTheFur]

i guess what i meant by cage is, say you have a sphere(and this will seem pointless with a sphere because u could just use spherical projection but humor me with this example), and you want to project a texture on it. I heard(I guess i made this up in my head cuz max users dont know what i mean either) that you can project the texture using a nurbs object |=nurbs object o=sphere

|->o

make sense? tell me im crazy so i can just stop talking :buttrock:

[lutz]

First of all, you are crazy! :beer:
But don't stop talking. ;)
If you take a look in your Maya Online Manual in
Maya4.0\docs\en_US\html\UserGuide\ModelingNURBS\modelNURBSsurfaceEditing2.html
maybe you will get an idea.
But maybe I didn't understand you correctly and this is senseless. :airguitar

Regards,
lutz

[gas]

dont forget the texturewrap on nurbs surface... can fix youre stratching textures

[playmesumch00ns]

aroundTheFur:

yes you can do this, you're not crazy. What happens is you make a NURBS surface that's a good 'fit' for your object, then use a closestPointOnSurface node to grab the UV of the NURBS surface and stick it to the vertex of your mesh. There's a tutorial on it somewhere, maybe Highend? (This technique does depend on you having well-spaced isoparms on you NURBS surface)

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.