.TH TrimSrfSubdivAtParam 3 "IRIT Version 6.0" 
.SH NAME
TrimSrfSubdivAtParam()
.SH SYNOPSIS
.nf
.ft B
trim_lib/trim_sub.c:49

.nf
.ft B
TrimSrfStruct *TrimSrfSubdivAtParam(TrimSrfStruct *TrimSrf,
                                    CagdRType t,
                                    CagdSrfDirType Dir)
.SH DESCRIPTION
Given a trimmed surface - subdivides it into two sub-surfaces at given
parametric value t in the given direction Dir.
Returns pointer to a list of two trimmed surfaces, at most. It can very
well may happen that the subdivided surface is completely trimmed out and
hence nothing is returned for it.
.SH PARAMETERS:

TrimSrf: To subdivide at the prescibed parameter value t.

t: The parameter to subdivide the curve Crv at.

Dir: Direction of subdivision. Either U or V.
.SH FUNCTION RETURN VALUE
TrimSrfStruct *:  The subdivided surfaces. Usually two, but can have
only one, if other is totally trimmed away.
.LP
.SH ORIGIN
(C) Copyright 1989/90-95 Gershon Elber, Technion, IIT