3d max models

3d max models

3d max models

There are all kinds of splines, and they have different purposes. NURBS are the most sophisticated type of spline for 3D Models, and in this lesson we'll try to understand why. We'll stick only to the splines themselves for the moment, and in the next lesson we'll make the big leap to surfaces constructed of networks of intersecting curves. The focus here, of course, is on spline (and especially NURBS) modeling in Softimage, but it is very important to understand that this subject transcends any

Softimage had very sophisticated spline modeling tools well before it implemented NURBS. This history has resulted in a somewhat confusing interface. All of the lesser types of splines are grouped together, and the NURBS curves are treated separately, even though there is a natural gradation up the ladder from the simplest linear curve to NURBS. This distinction has practical significance because NURBS cannot be readily mixed with the other types when modeling.

Let's start at the bottom. 3D Models The simplest "curve" is a straight line. This may sound funny, but in most computer graphics, a straight line or sequence of connected line segments is considered a kind of curve. Here is a linear curve in Softimage.

Of course, this is hardly a curve at all, but we certainly need straight lines or "polylines," as these units of connected straight segments are sometimes called. More precisely, they are "piecewise linear curves," and it's important to remember that all our curves, no matter how smooth they end up looking, are ultimately broken into small linear segments for display.

The next step up the ladder is to the "natural" spline, called the "cardinal" spline in Softimage. Let's take our linear curve and simply convert it to a cardinal spline, so that the points are in the same locations.

Notice a couple of things. First, the curve is passing directly through the points. To change the shape of the curve, we simply move the points. It's pretty easy.

We can also change the shape of a cardinal spline without moving the points. 3D Models Changing the tension value adjusts the curvature through the control points. Here are a couple of examples.

POST COMMENT

Tacfit Commando Vs P90x 3ds free models 401(k) Contribution issues How to Pick Lotto Max Numbers Using Secret Lotto Black Book System What is involved in Detailing a Car? Achieve Perfect Looking Skin Through These Three Basic Steps Where Angels Fear to Walk Ways to sing better instantly Achieving your Goals efficiently Parker Pen Refills-The Options for Your Parker Fountain Pen How to Cure Bell's Palsy Confused About SEO? Read This Gastroenterology - A Gut Reaction