tmac.pspic

早期freebsd实现

.\" 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
.br
.sy echo .ps-bb `psbb \\$1` >/tmp/psbb\\n[$$]
.so /tmp/psbb\\n[$$]
.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
.	ie \\n[.$]>=3 .nr ps-desht (i;\\$3)
.	el .nr ps-desht \\n[ps-deswid]*1000+(\\n[ps-wid]/2)/\\n[ps-wid]\
*\\n[ps-ht]+500/1000
.	ne \\n[ps-desht]u+1v
.	nr ps-offset \\n[.l]-\\n[.i]-\\n[ps-deswid]/2
.	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
.\}
.sy rm /tmp/psbb\\n[$$]
..