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.\"##
.\" $XConsortium: p140,v 5.2 94/04/17 20:56:03 rws Exp $
.\"##
.\"##
$XMCOPY
.\"## Copyright (c) 1990, 1991 by Sun Microsystems, Inc.
.\"##
.\"## All Rights Reserved
.\"##
.\"## Permission to use, copy, modify, and distribute this software and its
.\"## documentation for any purpose and without fee is hereby granted,
.\"## provided that the above copyright notice appear in all copies and that
.\"## both that copyright notice and this permission notice appear in
.\"## supporting documentation, and that the name of Sun Microsystems,
.\"## not be used in advertising or publicity
.\"## pertaining to distribution of the software without specific, written
.\"## prior permission.
.\"##
.\"## SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
.\"## INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
.\"## EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
.\"## CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
.\"## USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
.\"## OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
.\"## PERFORMANCE OF THIS SOFTWARE.
.TH "INQUIRE HLHSR IDENTIFIER FACILITIES" 3P "29 February 1991"
.SH NAME
INQUIRE HLHSR IDENTIFIER FACILITIES \- inquire the available hidden line
and hidden surface removal
identifiers of a specified workstation type
.IX "Z-buffering" "INQUIRE HLHSR IDENTIFIER FACILITIES"
.IX "Hidden Line/Hidden Surface Removal" "INQUIRE HLHSR IDENTIFIER FACILITIES"
.IX "HLHSR" "INQUIRE HLHSR IDENTIFIER FACILITIES"
.SH SYNOPSIS
.SS C Syntax
.ft B
.ta 1.25i 3i
.nf
void
pinq_hlhsr_id_facs ( type, length, start, error_ind, ids, length_list )
Pint type; \fIworkstation type\fP
Pint length; \fIlength of id list\fP
Pint start; \fIstarting position of id list\fP
Pint *error_ind; \fIOUT error indicator\fP
Pint_list *ids; \fIOUT list of HLHSR identifiers\fP
Pint *length_list; \fIOUT length of id list in PHIGS\fP
.fi
.ft R
.SS Required PHIGS Operating States
(PHOP, *, *, *)
.SH DESCRIPTION
.SS Purpose
\s-2INQUIRE HLHSR IDENTIFIER FACILITIES\s+2 obtains the available \s-2HLHSR\s+2
(hidden line and hidden surface removal) identifiers
on the specified workstation type. See \s-2SET HLHSR IDENTIFIER\s+2
for a description of how to set the id.
.sp .3
.IP \fItype \fP
Type of workstation.
.IP \fIlength\fP
The number of \fIints\fR in the \fIids\fR output parameter for which the
application has allocated memory. \fIlength\fR is the number of list elements
that the system can return in \fIids\(->ints\fR.
If a value of 0 is used here, no data will be returned in the \fIids\(->ints\fR
list, but the total number of identifiers in the \s-2PHIGS\s+2 state list
will be returned in \fIlength_list\fR.
.IP \fIstart\fP
Starting position of inquiry into the \s-2PHIGS\s+2 state list of
current identifiers. The elements of the list of identifiers, beginning
with the item number specified by \fIstart\fR, are copied sequentially into
\fIids\(->ints\fR until \fIids\(->ints\fR is full or all the
identifiers have been copied.
.IP \fIerror_ind\fP
A pointer to the location to store the error number of any error
detected by this function.
.IP \fIids\fP
A pointer to a Pint_list data structure in which the system returns a
list of the \s-2HLHSR\s+2 identifiers available on this workstation type.
The returned list starts with the \fIstart\fP item in the list of
identifiers and returns the next \fIlength\fP items.
Pint_list is defined in phigs.h as follows:
.ta .5i +\w'Pint 'u +\w'num_ints; 'u
.nf
.sp .3
typedef struct {
.sp .2
Pint num_ints; /* number of identifiers in list */
Pint *ints; /* list of identifiers */
.sp .2
} Pint_list;
.fi
.IP
Prior to calling this function, the \fIints\fR field must contain
a pointer to an application supplied buffer.
This buffer must be able to hold \fIlength\fR \fIids\fR.
\fInum_ints\fR is the number of \fIids\fR returned in the buffer.
.sp .2
Defined \fIids\fR are:
.nf
.ta .5i +.25i +2i +.25i
.sp .2
0 PHIGS_HLHSR_ID_OFF \fIDo not do Hidden Line or Hidden Surface removal\fP
1 PHIGS_HLHSR_ID_ON \fIDo Hidden Line and Hidden Surface removal
according to the current \s-2HLHSR\s+2 Mode\s+2\fP
.fi
.sp .3
.IP \fIlength_list\fP
A pointer to an integer in which the system returns the total number of elements
in the \s-2PHIGS\s+2 state list of currently used identifiers.
This is the value required for \fIlength\fR if all identifiers are to be returned.
.SH ERRORS
.IP 002
Ignoring function, function requires state (\s-2PHOP, *, *, *\s+2)
.IP 052
Ignoring function, workstation type not recognized by the implementation
.IP 051
Ignoring function, this information is not yet available
for this workstation type; open a workstation of this type
and use the specific workstation type
.IP 057
Ignoring function, specified workstation is of category \s-2MI\s+2
.IP 062
Ignoring function, this information is not available for this
\s-2MO\s+2 workstation type
.SH SEE ALSO
.nf
.IP
.ta 0.5i
.SM "INQUIRE WORKSTATION CONNECTION AND TYPE (3P)"
.SM "INQUIRE HLHSR MODE (3P)"
.SM "INQUIRE HLHSR MODE FACILITIES (3P)"
.SM "SET HLHSR MODE (3P)"
.SM "SET HLHSR IDENTIFIER (3P)"
.fi
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