Advantages & Disadvantages

[flipout]

Id be interested to know what your opinions are on the advantages or disadvantages in modeling with polys as apposed to nurbs in Maya or visa versa. Say if you where to model something like a skull (Solid object but organic in shape), a face (which is for the most part soft). Thanks

[amasaro]

Hey.

Everybody mostly say that NURBS are best for organic modeling (Because of the way they deform, and because they are so smooth). And polys are best for mechanical modeling (because it easier to extrude than to shape nurbs that way, and because they have hard edges)

But I use polys for everything. THIS IS ONLY MY OPINION, but i think polly are better for everything if you know how to handle them. They dont need those system resources that the same amount of nurbs would need, and if you know how to model right you can make great looking organic models out of polly and they would deform nocely too. Besides you cant put nurbs to games, you still have to convert to polys, and when you render(did you know that?) Nurbs are temporarily turned into polys and renderd as polygons and then turned back to NURBS. But again this is only my point of view.

[joojaa]

youd better not get tengledin te Nurbs s polys stuff. Alot of people use poly exclusively becaue honestly they dont know how to use nurbs. Personaly i use nurbs as apolymodelling toolset as well as standalone.

Hwever please do understand thet allmost 100% of all mechanileingeneering is done in NURBS! So saying polys are better for this is like saying fish are beter on bicycles. Offcourse machanical eingeneers ue solid modellers, but he reason they sue nurbs as opposed to polys si tt if they boolean tey gt the exact boolean and no halfhearted allmostround. Howvere theese apps are optimied diefferently.

Its good to udertasnd tht theres a big divide between 2 groups of modellers

• Entertaimaent and visualisation modelers
• Eingeneering and industrial designers

for one the eingenereing visualizers are interested in functional forms while the ID is interested in c2 coninuity of the surface (car designers allost all concerete 50% of their efforts here, if you don know what c2 coninuity is then you have allmost no chance to become one, even thenonly about 1 in 10 designer ever msters this well enough) amongst other things

the only real disadvanages ofnurbs are its unintuitiviness (bacuse you do patches not objects), and slightly heavy math. ON the otherand polys prblems are lck of noccsery tools and precicion.