Basic Modeling
Predefined Objects
A number of objects are predefined (constants) in c_shape_edit. Here are
the names and brief description:

Origin  A point at the origin (0, 0, 0)

Xdir  X direction vector

Ydir  Y direction vector

Zdir  Z direction vector

XAxis  A line

YAxis  A line

ZAxis  A line

OriginAnchor  Anchor at the origin aligned with coordinate axes

NegZOriginAnchor  Anchor at the origin aligned with negative
Z axis

UnitCircle  A curve (not a circle object) representing
a circle at the origin with radius 1

UnitSphere  A shell (not a sphere object) representing
a sphere at the origin with radius 1

CubeSphere  An alternate unit sphere (shell) made up of
six surfaces with a "beachball" topology with no degenerate normals
C_Shape_Edit User's Manual Home Page
Alpha_1 User's Manual.
Copyright © 1998, University of Utah
a1web@gr.cs.utah.edu