divert(-1)
darrow.m4 Macros for double lines and arrows
* Circuit_macros Version 5.86, copyright (c) 2006 J. D. Aplevich, under *
* the LaTeX Project Public License. The files of this distribution may be *
* redistributed or modified, provided that this copyright notice is *
* included, and provided that modifications are clearly marked to *
* distinguish them from this distribution. There is no warranty *
* whatsoever for these files. *
Installation directory. You can set HOMELIB_
to the null string if you use an environment
variable to tell m4 where to search:
ifdef(`HOMELIB_',,
`define(`HOMELIB_',`./circuit/')')
#`define(`HOMELIB_',`C:\Dwight\lib\')')
Default pic processor: gpic. To make dpic -p
the default, change gpic to pstricks here:
ifdef(`m4picprocessor',,`include(HOMELIB_`'gpic.m4)divert(-1)')
ifdef(`elen_',,`define(`elen_',linewid*3/2)')
`dline(linespec,start truncation,end truncation,width,
|-| or -| or |- )'
define(`dline',`m4dl_init(`$1',`$2',`$3',`$4')
define(`m4lj',`ifelse(`$5',,0,`$5',`-|',0,`linethick bp__/2')')dnl
define(`m4rj',`ifelse(`$5',,0,`$5',`|-',0,`linethick bp__/2')')dnl
ifelse(m4postprocessor,pstricks,
`command "\pscustom[linestyle=none,fillcolor=white,fillstyle=solid]{"
{line from rvec_(m4lj, m4dlw/2) to rvec_(m4dll-m4rj, m4dlw/2)}
{line from rvec_(m4dll-m4rj,-m4dlw/2) to rvec_(m4lj,-m4dlw/2)}
command "}%"',
m4postprocessor,postscript,
`{line thick m4dlw/(1bp__) color "1 1 1" \
from rvec_(m4lj,0) to rvec_(m4dll-m4rj,0)}',
m4postprocessor,gpic,, # No white fill for gpic
`m4_tmpthick = linethick; linethick=0
shade(1,{line from rvec_(m4lj, m4dlw/2) to rvec_(m4dll-m4rj, m4dlw/2)}
{line from rvec_(m4dll-m4rj,-m4dlw/2) to rvec_(m4lj,-m4dlw/2)})
linethick = m4_tmpthick')
ifelse(m4lj,0,,`{line from rvec_(0,-m4dlw/2) to rvec_(0,m4dlw/2)}')
{line from rvec_( 0, m4dlw/2) to rvec_(m4dll, m4dlw/2)}
ifelse(m4rj,0,,`{line from rvec_(m4dll,m4dlw/2) to rvec_(m4dll,-m4dlw/2)}')
{line from rvec_(m4dll,-m4dlw/2) to rvec_( 0,-m4dlw/2)}
line invis to rvec_(m4dll,0)')
Turn left, leaving current location at exit
of corner
define(`dleft',`dnl
{line from rvec_(0,-dlinewid/2) to rvec_(dlinewid,-dlinewid/2) \
then to rvec_(dlinewid,dlinewid/2)}
line invis to rvec_(dlinewid/2,dlinewid/2)
define(`dir_',up__) manhattan dir_')
Turn right, leaving current location at exit
of corner
define(`dright',`dnl
{line from rvec_(0, dlinewid/2) to rvec_(dlinewid, dlinewid/2) \
then to rvec_(dlinewid,-dlinewid/2)}
line invis to rvec_(dlinewid/2,-dlinewid/2)
define(`dir_',dn_) manhattan dir_')
`darrow(linespec,start truncation,end truncation,width,
arrow wid, arrow ht,<- or <-| or |)'
define(`darrow',`m4dl_init(`$1',`$2',`$3',`$4');{
ifelse(substr(`$7',0,2),<-,
`move to rvec_(m4dll,0); rp_ang = rp_ang+twopi_/2 dnl
define(`m4m',`substr(`$7',2)')',`define(`m4m',`$7')')
ifelse(m4m,|,,
`{ line from rvec_(0,m4dlw/2) to rvec_(linethick bp__/2,m4dlw/2) }
{ line from rvec_(0,-m4dlw/2) to rvec_(linethick bp__/2,-m4dlw/2) }')
define(`m4h',`ifelse(`$5',,m4dlw,(`$5')/2)')dnl
define(`m4v',`ifelse(`$6',,m4dlw*3/2,(`$6'))')dnl
ifelse(m4postprocessor,pstricks,
`command "\pscustom[linestyle=solid,fillcolor=white,fillstyle=solid]{"',
m4postprocessor,gpic,,
`shade(1,')
{line from rvec_(linethick bp__/2,m4dlw/2) to rvec_(m4dll-m4v,m4dlw/2) \
then to rvec_(m4dll-m4v,m4h) then to rvec_(m4dll,0) \
then to rvec_(m4dll-m4v,-m4h) then to rvec_(m4dll-m4v,-m4dlw/2)\
then to rvec_(linethick bp__/2,-m4dlw/2) ifelse(m4m,|,
`then to rvec_(0,-m4dlw/2) then to rvec_(0,m4dlw/2) \
then to rvec_(linethick bp__/2,m4dlw/2)')}
ifelse(m4postprocessor,pstricks,`command "}%"',m4postprocessor,gpic,,`)')
ifelse(substr(`$7',0,2),<-,`move to rvec_(m4dll,0); rp_ang=rp_ang+twopi_/2')
}; line invis to rvec_(m4dll,0)')
`dtee([L|R]) Construct tee with tail right, left,
or back along current direction, leaving current
location at tee centre; eg
dline(right_,,t); dtee(R);
{ darrow(down_,t) }; darrow(right_,t)'
define(`dtee',`rpoint_(to rvec_(dlinewid,0)); move to last line.c
ifelse(`$1',L,`rp_ang = rp_ang-pi_/2',`$1',R,`rp_ang = rp_ang+pi_/2',`$1')
{line from rvec_(dlinewid/2,-dlinewid/2) to rvec_(dlinewid/2,dlinewid/2)}
{line from rvec_(-dlinewid/2,-dlinewid/2) to rvec_(-dlinewid/2,-dlinewid/2)}
{line from rvec_(-dlinewid/2, dlinewid/2) to rvec_(-dlinewid/2, dlinewid/2)}')
Close off line end: `dend([at position])'
define(`dend',`ifelse(`$1',,,`move to substr(`$1',eval(index(`$1',at)+2))')
{line from rvec_(0,-dlinewid/2) to rvec_(0,dlinewid/2) chop -linethick/2pt__}')
