anywayz,

My intentions are to teach you about splines and NURBS...

Lets start:

NURBS = Non-Uniform Rational B-Splines (hey, dont shoot at me, i didnt invent the darn name!)

Basicly, its an alternative way of modeling, most of you allready did at some time or another. The standard way of modeling would be "polygonal modeling", where you work with polygons (the building blocks of 3D shapes).

Here, with NURBS, you work with "source objects" (splines) and C4D will attempt to generate the polygons necessary to make the object. This allows for smooth objects (B-splines are very smooth) and gives a great flexibility: you can always alter the splines to alter the entire form.

There are off course some drawbacks. Among others: C4D doesthe work for you, so its not always 100% predictable what the endresult will be, and if an object is part of a NURBS, you have no control on a polygon-by polygon basis...

These are the NURBS-generators:

Those marked with blue are the classic (real) generators (those who need splines as a child to be able to generate the polygons), Those marked in red are both special ones and will be explained in this tutorial (in several parts).

Part I of the tutorial is about the BezierNURBS, which basicly doesnt need anything and lives by itself. In part II (in bout 3 years ) i will try to explain bout HyperNURBS, which needs a polygon object as a child instead of splines.

Thus, those marked in Blue will be subject of a entirely different Tutorial (Part III) in bout 20 years...

Thes are the splines bdw:

to be continued...

**Edited by Scythar, 26 December 2007 - 11:59 AM.**