CATIA V5-6R2018: Introduction to Surface Design
1–6 © 2019, ASCENT - Center for Technical Knowledge®
The connections between curves and surfaces are defined as
follows:
Classification Description
G0 The curves or surfaces share a common end point or
edge. They are not tangent to one another as shown
below.
G1 The curves or surfaces are tangent to each other, share
a common end point or edge, and have differing
curvature magnitudes at their intersections, as shown
below.
G2 The curves or surfaces are tangent and have a
constant curvature at their shared end point or edge as
shown below. G2 continuity produces a smooth
connection. G2 continuity is usually only required for
surfaces in which light reflection is an issue.
No tangency
Entities are tangent
Magnitude of
curvatures is
different.
Tangent and
curvature continuous
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