NRBCIRC: Construct a circular arc. Calling Sequence: crv = nrbarc crv = nrbarc(radius) crv = nrbarc(radius,center) crv = nrbarc(radius,center,sang,eang) Parameters: radius : Radius of the circle, default 1.0 center : Center of the circle, default (0,0,0) sang : Start angle, default 0 degrees eang : End angle 360 degrees crv : NURBS curve for a circular arc. Description: Constructs NURBS data structure for a circular arc in the x-y plane. If no rhs arguments are supplied a unit circle with center (0.0,0.0) is constructed. Angles are defined as positive in the anti-clockwise direction.

- democirc Demonstration of a circle and arcs in the x-y plane.
- demoellip Demonstration of a unit circle transformed to a inclined ellipse
- demogeom Demonstration of how to construct a 2D geometric
- demoruled Demonstration of ruled surface construction.
- demotorus % Copyright (C) 2003 Mark Spink
- nrbcylind
- nrbrevolve % Copyright (C) 2003 Mark Spink

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