2. Primitives (cur)

The Curve primitive group contains a set of tools for creating nurbs curve object primitives. Tools work with real-time curve Boolean and can also work in polygon slicing mode. All curve-based primitives uses nurbs Curve 2 technology (see NURBS specifications).

Point

Tool for creating points. Also adds points to curves, polygon and nurbs surface edges.

Line

Tool for creating nurbs curves and lines.

Basic tool modes:

• line
• curve - handle weight can be adjusted by holding the SHIFT key
• spline

Rectangle

Tool for creating a nurbs rectangle object. Works with Shape Library 1D and 2D.

Basic tool modes:

• Center - pivot is always in the center
• Corner - pivot is automatically placed to opposite corner from active handle
• Rotate - object can be rotated with two corner handles

Primitive modes:

• RECT - basic rectangle curve
• LIB1D - object created from Shape Library 1D
• LIB2D - object created from Shape Library 1D

Circle

Tool for creating nurbs circles and ellipse objects.

Basic tool modes:

• Radius
• Diameter
• 3point
• Elliptic

Arc

Tool for creating nurbs arc objects.

Basic tool modes:

• 3point
• tangent
• angle