hi everyone
i have a theory question about nurbs and polygon. Even i've read the "inside softimage 3d" and some 3d modeling books, and also heard the explain from my lecturer, but I still don't completely understand, i'm stupid.... the problem is, why i can't just only delete (not trim~) one of a "square" on a nurbs surface? but why polygon can do this? i have a idea, that is, we can only cut a nurbs surface by cutting from one side to another side though the isoparms of the nurbs surface, but we can't cut thoguh any "square" of the nurbs or cut any square inside the nurbs, does this idea right o not? and also, if i use patch to create nose, ear, mouth, eye seperately, and then place together and i can adjust the isoparms accurately, is it i can form a good face then??
all opinion are welcome, i wish you can help me to tidy up my idea about nurbs and polygons.........
thanks~