2011

Table Of Contents
Rules that govern the position, slope, tangency, dimensions, and relationships
among objects in a geometry.
construction plane See workplane.
contextual ribbon tab
A ribbon tab that is displayed only when a particular type of object or when
a particular command is executed. For example, selecting a hatch or table, or
executing the mtext command brings up the corresponding contextual menu.
continued dimension A type of linear dimension that uses the second
extension line origin of a selected dimension as its first extension line origin,
breaking one long dimension into shorter segments that add up to the total
measurement. Also called chain dimension. (DIMCONTINUE)
continuity A measure of how smoothly two curves or surfaces flow into each
other where they are joined. Continuity is measured as G0-Position,
G1-Tangency, and G2-Curvature.
G0 (Position) - The curves or surfaces join in the same location (position
only); they touch. But the tangency and curvature do not match.
G1 (Tangent) - The position and tangency between the surfaces match.
This indicates G1 (position + tangency) continuity between the surfaces.
G2 (Curvature) - The position, tangency, and curvature between the surfaces
match. This indicates G2 (position + tangency + curvature) continuity
between the two surfaces.
control frame A series of point locations used as a mechanism to control the
shape of a B-spline. These points are connected by a series of line segments
for visual clarity and to distinguish the control frame from fit points. The
CVSHOW and CVHIDE commands must be turned on to display and hide
control frames.
control point See control frame.
control vertices (CVs) The most basic way to shape a NURBS surface or spline.
These points act as grips that can be dragged to reshape the object.
Coons patch In 3D surface meshes, the bicubic surface (one curved in the M
direction and another in the N direction) interpolated between four edges.
coordinate filters Functions that extract individual X, Y, and Z coordinate
values from different points to create a new, composite point. Also called X,Y,Z
point filters.
Glossary | 2157