.\" Define the PSPIC macro.
.\" When used other than with -Tps, it will draw a box around where
.\" the picture would go.
.de ps-bb
.nr ps-nargs \\n[.$]
.if \\n[ps-nargs]=4 \{\
. nr ps-llx 0\\$1
. nr ps-lly 0\\$2
. nr ps-urx 0\\$3
. nr ps-ury 0\\$4
.\}
..
.de PSPIC
.nr ps-offset-mode 0
.if '\\$1'-L' \{\
. nr ps-offset-mode 1
. shift
.\}
.if '\\$1'-R' \{\
. nr ps-offset-mode 2
. shift
.\}
.if '\\$1'-I' \{\
. nr ps-offset-mode 3
. nr ps-offset (m;\\$2)
. shift 2
.\}
.br
.sy echo .ps-bb `psbb \\$1` >/tmp/psbb\\n[$$]
.so /tmp/psbb\\n[$$]
.sy rm /tmp/psbb\\n[$$]
.if \\n[ps-nargs]=4 \{\
. nr ps-wid (\\n[ps-urx]-\\n[ps-llx])
. nr ps-ht (\\n[ps-ury]-\\n[ps-lly])
. if \\n[ps-wid]<0 .nr ps-wid 0-\\n[ps-wid]
. if \\n[ps-ht]<0 .nr ps-ht 0-\\n[ps-ht]
. ie \\n[.$]>=2 .nr ps-deswid (i;\\$2)
. el .nr ps-deswid \\n[.l]-\\n[.i]<?\\n[ps-wid]p
. nr ps-desht \\n[ps-deswid]*1000+(\\n[ps-wid]/2)/\\n[ps-wid]\
*\\n[ps-ht]+500/1000
. if \\n[.$]>=3&(\\n[ps-desht]>(i;0\\$3)) \{\
. nr ps-desht (i;\\$3)
. nr ps-deswid \\n[ps-desht]*1000+(\\n[ps-ht]/2)/\\n[ps-ht]\
*\\n[ps-wid]+500/1000
. \}
. ne \\n[ps-desht]u+1v
. if \\n[ps-offset-mode]=0 .nr ps-offset \\n[.l]-\\n[.i]-\\n[ps-deswid]/2
. if \\n[ps-offset-mode]=1 .nr ps-offset 0
. if \\n[ps-offset-mode]=2 .nr ps-offset \\n[.l]-\\n[.i]-\\n[ps-deswid]
. ie \\n[.$]>=3 .ds ps-desht \\n[ps-desht]
. el .ds ps-desht \" empty
\h'\\n[ps-offset]u'\
\X'ps: invis'\
\Z'\D'p 0 \\n[ps-desht]u \\n[ps-deswid]u 0 0 -\\n[ps-desht]u''\
\X'ps: endinvis'\
\v'\\n[ps-desht]u'\X'ps: import \\$1 \
\\n[ps-llx] \\n[ps-lly] \\n[ps-urx] \\n[ps-ury] \\n[ps-deswid] \\*[ps-desht]'
. br
. sp \\n[ps-desht]u
.\}
..