Autodesk 663B1-05A111-1001 User Guide - Page 254

Create > CV Curve Tool

Page 254 highlights

12 | Basics Menus Reference > Create > CV Curve Tool Adjust cap subdivisions after create Adds additional steps to the Interactive Creation process that let you adjust the cap subdivisions on primitives that contain caps (Cylinder, cone, pyramid, prism, helix, pipe). The default setting is off. This option can only be used when the Adjust subdivisions after create option is turned on. Create > CV Curve Tool Lets you draw a NURBS curve by placing CVs. Related topics ™ "Components of NURBS curves" on page 19 ™ "Draw curves" on page 25 ™ "Create > EP Curve Tool" on page 255 ™ "Display > NURBS" on page 299 Create > CV Curve Tool > ˆ Curve Degree The higher the Curve Degree, the smoother the curve. The default setting (3 Cubic) works well for most curves. You must create at least one more CV than the Curve Degree number. For example, you need at least six CVs to complete a degree 5 curve: 6 1 234 5 See "Degree" on page 11 for more details. Knot Spacing The type of knot spacing sets how Maya assigns U position values to edit point (knots). Chord length knot spacing distributes curvature better. If you use the curve to build a surface, the surface might display textures better. Uniform knot spacing creates curve U position values that are easier for you to predict. See "Parameterization of NURBS curves and surfaces" on page 12 for details. Multiple End Knots When turned on, the curve's end edit points (knots) are superimposed on the end CVs. Generally, this makes the curve's end region easier to control. Basics 254

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Basics
254
12 | Basics Menus
Reference > Create > CV Curve Tool
Adjust cap subdivisions after create
Adds additional steps to the Interactive Creation process that let you adjust
the cap subdivisions on primitives that contain caps (Cylinder, cone, pyramid,
prism, helix, pipe). The default setting is off. This option can only be used
when the Adjust subdivisions after create option is turned on.
Create > CV Curve Tool
Lets you draw a NURBS curve by placing CVs.
Related topics
”Components of NURBS curves” on page 19
”Draw curves” on page 25
”Create > EP Curve Tool” on page 255
”Display > NURBS” on page 299
Create > CV Curve Tool >
Curve Degree
The higher the Curve Degree, the smoother the curve. The default setting (3
Cubic) works well for most curves. You must create at least one more CV
than the Curve Degree number. For example, you need at least six CVs to
complete a degree 5 curve:
See ”Degree” on page 11 for more details.
Knot Spacing
The type of knot spacing sets how Maya assigns U position values to edit
point (knots). Chord length knot spacing distributes curvature better. If you
use the curve to build a surface, the surface might display textures better.
Uniform knot spacing creates curve U position values that are easier for you
to predict. See ”Parameterization of NURBS curves and surfaces” on page 12
for details.
Multiple End Knots
When turned on, the curve’s end edit points (knots) are superimposed on the
end CVs. Generally, this makes the curve’s end region easier to control.
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