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.\" $XConsortium: p358,v 5.2 94/04/17 20:58:37 rws Exp $
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.\"## 
$XMCOPY
.\"## Copyright (c) 1990, 1991 by Sun Microsystems, Inc. 
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.\" 1. Substitute PHIGS Extension function name (in CAPS) for "PNAME" in line be.\"low:
.ds pN SET POLYLINE COLOUR
.TH "\*(pN" 3P+ "29 February 1991"
.SH NAME
\*(pN \-
create a structure element to set the polyline 
colour attribute
.IX "Colour" "SET POLYLINE COLOUR"
.IX "Line Attributes" "SET POLYLINE COLOUR"
.IX "Attributes, Line Attributes" "SET POLYLINE COLOUR"
.IX "PHIGS Extension Functions" "\*(pN"
.SH SYNOPSIS
.SS C Syntax
.ft B
.ta 1.25i 3i
.nf
.\" 6. Insert C syntax below
void
pset_line_colr ( colour )
Pgcolr	*colour;	\fIpolyline colour\fP
.fi
.ft R
.SS Required PHIGS Operating States
(PHOP, *, STOP, *)
.SH DESCRIPTION
.SS Purpose
\s-2SET POLYLINE COLOUR\s+2 creates a structure element 
to set the polyline 
colour attribute.
.LP
When the current polyline 
colour Aspect Source Flag 
(\s-2ASF\s+2) is set to \s-2INDIVIDUAL\s+2, the current value of
this attribute applies to the following output primitives:
.RS
.ta 0.2i +0.2i +0.2i +0.2i +0.2i +0.2i +0.2i +0.2i
.LP
\(bu
.SM "POLYLINE"
.LP
\(bu
.SM "POLYLINE 3"
.LP
\(bu
.SM "POLYLINE SET 3 WITH DATA"
.LP
\(bu
.SM "NON-UNIFORM B-SPLINE CURVE"
.LP
\(bu
.SM "ANNOTATION TEXT RELATIVE (when ``connected'' style is in use)"
.LP
\(bu
.SM "ANNOTATION TEXT RELATIVE 3 (when ``connected'' style is in use)"
.LP
\(bu
.SM "CELL ARRAY (when minimal simulation is performed)"
.LP
\(bu
.SM "CELL ARRAY 3 (when minimal simulation is performed)"
.ta
.RE
.SS C Input Parameters
.IP \fIcolour\fP
Polyline colour. Pgcolr is defined as:
.ta .5i +\w'union  'u +\w'struct  'u +\w'Pfloat      'u +\w'index;    'u +w\'x;      'u
.nf
.sp .4
typedef struct {
.sp .2
	Pint		 type;		/* indirect, RGB, CIE, HSV, HLS */
	union {
	   Pint		ind;		/* colour table index */
	   struct {
		Pfloat		x;		/* red, hue, etc. */
		Pfloat		y;		/* green, saturation, lightness, etc. */
		Pfloat		z;		/* blue, value, saturation, etc. */
	   } general;
	} val;
} Pgcolr;
.fi
.SS Execution
Depending on the edit mode, a \s-2SET POLYLINE COLOUR\s+2 element with
the value polyline colour in the specified colour model is 
inserted into the open structure after the element pointer or replaces
the element pointed at by the element pointer. The element pointer
is then updated to point to this \s-2SET POLYLINE COLOUR\s+2 element.
.LP
When the current polyline colour \s-2ASF\s+2 is set to
\s-2INDIVIDUAL\s+2, linear curve output primitives
that follow in
the structure network are drawn using the current polyline colour.
.LP
When the current polyline colour \s-2ASF\s+2 is set to \s-2BUNDLED\s+2,
the polyline colour is taken from the
workstation extended representation indicated by the current polyline index.
In this case, the polyline colour
set with \s-2SET POLYLINE COLOUR\s+2 has no effect.
.LP
The standard \s-2PHIGS\s+2 function \s-2SET POLYLINE COLOUR INDEX\s+2
is equivalent to calling to \s-2SET POLYLINE COLOUR\s+2 with type
\s-2INDIRECT\s+2.
.SH ERRORS
.IP 005
Ignoring function, function requires state (\s-2PHOP, *, STOP, *\s+2)
.SH SEE ALSO
.nf
.IP
.ta 0.5i
.SM "COLOUR (7P)"
.SM "SET INDIVIDUAL ASF (3P)"
.SM "INQUIRE POLYLINE REPRESENTATION PLUS (3P+)"
.SM "SET POLYLINE COLOUR INDEX (3P)"
.SM "SET POLYLINE REPRESENTATION (3P)"
.fi