1. 3DS Max
Nurbs

2. What are Nurbs? Nurbs are Surfaces and Curves
Nurbs – Non-Uniform Rational B-Splines
Mathematical algorithm produces the Surfaces and curves
Industry standard for creating organic objects with complex curves
Use less geometry than polygons to represent the same object

3. Why Nurbs?
Use less geometry than polygons to represent the same object
Easy to manipulate
More efficient to calculate
Seamless surfaces
Smooth edges
Great for creating organic objects with complex curves
Animation advantages

4. Nurb Objects and Sub-Objects.
The starter object in a Nurbs object is either a Surface or Curve
Two types of Nurbs surfaces: Point Surface and Control Vertices (CV) Surface
Controlled by manipulating points or control Vertex sub-objects. The Points and CVs behave just like the vertices of Spline shapes

5. The two types of Nurb Surfaces.
Sufaces:
Point Surface - controlled by Points that always lie on its surface when the surface is edited
CV Surface – controlled by Control Vertices (CVs) that form the control lattice that surrounds the surface (just like the FFD modifier lattice). The vertices don’t lie on the surface when edited

6. The two types of Nurb Curves.
Correspond exactly to the two types of Nurb surfaces
Point Curve - controlled by Points that always lie on its curve when the curve is edited
CV Curve – controlled by Control Vertices (CVs) that form the control lattice that surrounds the curve. The CVs don’t lie on the surface when edited

7. Ways to create Nurb Models
Create Nurb Curves by accessing the shape panel on the create object tab
Create Nurb Surfaces by accessing the geometry panel on the create object tab
Convert Standard Primitives into Nurb Primitives (right-click object – convert to Nurbs)
The Prism Extended Primitive can be converted into a Nurb object
Convert Splines into Nurb Curves
Convert Patches into Nurb Objects
Convert Loft objects into Nurb Objects
Create a “Cage” of Nurbs Curves and Uloft a surface over the cage