.\" @(#)PEXSetCurveApprox.3 1.4 95/03/24 SMI;
.so man3/pex.macs
.TH PEXSetCurveApprox 3 "May 1995" "Solaris PEXlib Reference Manual" ""
.SH NAME
PEXSetCurveApprox - Set Curve Approximation Method
.SH SYNTAX
.HP
void PEXSetCurveApprox\^(\^Display *\fIdisplay\fP\^, XID \fIresource_id\fP\^, PEXOCRequestType \fIreq_type\fP\^, int \fImethod\fP\^, double \fItolerance\fP\^)
.SH PARAMETERS
.IP \fIdisplay\fP 1i
A pointer to a display structure returned by a successful
.B XOpenDisplay
call.
.IP \fIresource_id\fP 1i
The resource identifier of the renderer or structure.
.IP \fIreq_type\fP 1i
The request type for the output command (
.B PEXOCRender,
.B PEXOCStore,
.B PEXOCRenderSingle
or
.B PEXOCStoreSingle
).
.IP \fImethod\fP 1i
The curve approximation method (
.B PEXApproxImpDep,
.B PEXApproxConstantBetweenKnots,
.B PEXApproxWCChordalSize,
.B PEXApproxNPCChordalSize,
.B PEXApproxDCChordalSize,
.B PEXCurveApproxWCChordalDev,
.B PEXCurveApproxNPCChordalDev,
.B PEXCurveApproxDCChordalDev,
.B PEXApproxWCRelative,
.B PEXApproxNPCRelative,
.B PEXApproxDCRelative
).
.IP \fItolerance\fP 1i
The curve approximation tolerance (specific to each method).
.SH RETURNS
.LP
None
.SH DESCRIPTION
.\" indexing
.IX PEXSetCurveApprox
.LP
This function creates an output primitive attribute which
sets the curve approximation attribute.
If the specified
.I method
is not supported, an implementation-dependent method
(method 1) is used.
Supported values for curve approximation are inquirable via
.BR PEXGetEnumTypeInfo (3) .
The
.I tolerance
value is
provided to indicate the desired accuracy of the approximation, and is
used in different ways for the different methods.
.\" See \fIChapter 4: Pipeline Contexts\fP
.\" for more information about tolerance values.
.SH ERRORS
.TP
.SB BadPEXRenderer
The specified renderer resource identifier is invalid.
.TP
.SB BadPEXStructure
The specified structure resource identifier is invalid.
.SH SEE ALSO
.LP
.nf
.BR PEXSetIndividualASF (3)
.BR PEXGetEnumTypeInfo (3)
.fi