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-rw-r--r--Master/texmf-dist/metapost/blockdraw_mp/blockdraw.mp310
-rw-r--r--Master/texmf-dist/metapost/blockdraw_mp/bonddemo.mp63
-rw-r--r--Master/texmf-dist/metapost/blockdraw_mp/bondgraph.mp226
-rw-r--r--Master/texmf-dist/metapost/blockdraw_mp/cascadedemo.mp73
-rw-r--r--Master/texmf-dist/metapost/blockdraw_mp/docblockprefs.mp18
-rw-r--r--Master/texmf-dist/metapost/blockdraw_mp/shiftoff.mp130
6 files changed, 820 insertions, 0 deletions
diff --git a/Master/texmf-dist/metapost/blockdraw_mp/blockdraw.mp b/Master/texmf-dist/metapost/blockdraw_mp/blockdraw.mp
new file mode 100644
index 00000000000..1396f574ea4
--- /dev/null
+++ b/Master/texmf-dist/metapost/blockdraw_mp/blockdraw.mp
@@ -0,0 +1,310 @@
+%% blockdraw.mp
+%% Copyright 2006 Henrik Tidefelt
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained´.
+%
+% The Current Maintainer of this work is Henrik Tidefelt,
+% tidefelt@isy.liu.se.
+%
+% This work, referred to as blockdraw.mp, consists of the files
+% shiftoff.mp
+% blockdraw.mp
+% bondgraph.mp
+% blockdraw_mp.pdf
+
+numeric longblockrx;
+numeric longblockry;
+numeric smallblockr;
+longblockrx := 0.7cm;
+longblockry := 0.4cm;
+smallblockr := 0.3cm;
+
+numeric connectionlw;
+numeric blocklw;
+connectionlw := 0.8pt;
+blocklw = connectionlw;
+
+numeric textscale;
+textscale := 1;
+
+boolean implicitdraw;
+implicitdraw := true;
+
+input shiftoff;
+
+def sizedblock(expr txt, z, rx, ry ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic also shiftoff( txt scaled textscale, to_center );
+ addto tmppic doublepath (-rx,-ry)--(-rx,ry)--(rx,ry)--(rx,-ry)--cycle withpen pencircle scaled blocklw;
+ tmppic := tmppic shifted z;
+ if implicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+def longblock(expr txt, z ) =
+ sizedblock( txt, z, longblockrx, longblockry )
+enddef;
+def squareblock(expr txt, z ) =
+ sizedblock( txt, z, smallblockr, smallblockr )
+enddef;
+def roundblock(expr txt, z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic also shiftoff( txt scaled textscale, to_center );
+ addto tmppic doublepath (smallblockr,0)...(0,smallblockr)...(-smallblockr,0)...(0,-smallblockr)...cycle withpen pencircle scaled blocklw;
+ tmppic := tmppic shifted z;
+ if implicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+def splitdot(expr z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic contour fullcircle scaled 2.5connectionlw shifted z;
+ if implicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+def termcircle(expr z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic doublepath fullcircle scaled 7connectionlw shifted z;
+ if implicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+def pointpicture(expr z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic contour fullcircle scaled 0 shifted z;
+ tmppic
+ endgroup
+enddef;
+
+def mspoint( expr pth, mediation, slide ) =
+(point (arctime mediation * arclength(pth) + slide of pth) of pth)
+enddef;
+def hhconnect(expr pa, pb, mediation, slide ) =
+ begingroup
+ save mid, respath;
+ numeric mid;
+ path respath;
+ mid := (mediation)[ xpart pa, xpart pb ] + (if (xpart pb) > (xpart pa): 1 else: -1 fi) * slide;
+ respath := pa--( mid, ypart pa )--( mid, ypart pb )--pb;
+ if implicitdraw:
+ drawarrow respath withpen pencircle scaled connectionlw;
+ fi
+ respath
+ endgroup
+enddef;
+def vvconnect(expr pa, pb, mediation, slide ) =
+ begingroup
+ save mid, respath;
+ numeric mid;
+ path respath;
+ mid := (mediation)[ ypart pa, ypart pb ] + (if (ypart pb) > (ypart pa): 1 else: -1 fi) * slide;
+ respath := pa--( xpart pa, mid )--( xpart pb, mid )--pb;
+ if implicitdraw:
+ drawarrow respath withpen pencircle scaled connectionlw;
+ fi
+ respath
+ endgroup
+enddef;
+def hvconnect(expr pa, pb ) =
+ begingroup
+ save respath;
+ path respath;
+ respath := pa--( xpart pb, ypart pa )--pb;
+ if implicitdraw:
+ drawarrow respath withpen pencircle scaled connectionlw;
+ fi
+ respath
+ endgroup
+enddef;
+def vhconnect(expr pa, pb ) =
+ begingroup
+ save respath;
+ path respath;
+ respath := pa--( xpart pa, ypart pb )--pb;
+ if implicitdraw:
+ drawarrow respath withpen pencircle scaled connectionlw;
+ fi
+ respath
+ endgroup
+enddef;
+
+def conlabel(expr shiftdir, txt, z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := shiftoffwlm( txt scaled textscale, shiftdir ) shifted z;
+ if implicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+
+def leftpoint(expr pic, n, i ) =
+ (i/(n+1))[llcorner pic,ulcorner pic]
+enddef;
+def rightpoint(expr pic, n, i ) =
+ (i/(n+1))[lrcorner pic,urcorner pic]
+enddef;
+def bottompoint(expr pic, n, i ) =
+ (i/(n+1))[llcorner pic,lrcorner pic]
+enddef;
+def toppoint(expr pic, n, i ) =
+ (i/(n+1))[ulcorner pic,urcorner pic]
+enddef;
+def llconnect(expr pica, picb, slide ) =
+ begingroup
+ hhconnect( leftpoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ), 0.5, slide )
+ endgroup
+enddef;
+def rrconnect(expr pica, picb, slide ) =
+ begingroup
+ hhconnect( rightpoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ), 0.5, slide )
+ endgroup
+enddef;
+def ttconnect(expr pica, picb, slide ) =
+ begingroup
+ vvconnect( toppoint( pica, 1, 1 ), toppoint( picb, 1, 1 ), 0.5, slide )
+ endgroup
+enddef;
+def bbconnect(expr pica, picb, slide ) =
+ begingroup
+ vvconnect( bottompoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ), 0.5, slide )
+ endgroup
+enddef;
+def lrconnect(expr pica, picb ) =
+ begingroup
+ hhconnect( leftpoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ), 0.5, 0 )
+ endgroup
+enddef;
+def rlconnect(expr pica, picb ) =
+ begingroup
+ hhconnect( rightpoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ), 0.5, 0 )
+ endgroup
+enddef;
+def btconnect(expr pica, picb ) =
+ begingroup
+ vvconnect( bottompoint( pica, 1, 1 ), toppoint( picb, 1, 1 ), 0.5, 0 )
+ endgroup
+enddef;
+def tbconnect(expr pica, picb ) =
+ begingroup
+ vvconnect( toppoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ), 0.5, 0 )
+ endgroup
+enddef;
+def ltconnect(expr pica, picb ) =
+ begingroup
+ hvconnect( leftpoint( pica, 1, 1 ), toppoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def lbconnect(expr pica, picb ) =
+ begingroup
+ hvconnect( leftpoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def rtconnect(expr pica, picb ) =
+ begingroup
+ hvconnect( rightpoint( pica, 1, 1 ), toppoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def rbconnect(expr pica, picb ) =
+ begingroup
+ hvconnect( rightpoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def tlconnect(expr pica, picb ) =
+ begingroup
+ vhconnect( toppoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def trconnect(expr pica, picb ) =
+ begingroup
+ vhconnect( toppoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def blconnect(expr pica, picb ) =
+ begingroup
+ vhconnect( bottompoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+def brconnect(expr pica, picb ) =
+ begingroup
+ vhconnect( bottompoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ) )
+ endgroup
+enddef;
+
+def connect(expr pica, picb ) =
+ begingroup
+ save rxa, rya, rxb, ryb;
+ numeric rxa;
+ numeric rya;
+ numeric rxb;
+ numeric ryb;
+ save ca, cb;
+ pair ca;
+ pair cb;
+ rxa = 0.5 * ((xpart lrcorner pica) - (xpart llcorner pica));
+ rya = 0.5 * ((ypart ulcorner pica) - (ypart llcorner pica));
+ rxb = 0.5 * ((xpart lrcorner picb) - (xpart llcorner picb));
+ ryb = 0.5 * ((ypart ulcorner picb) - (ypart llcorner picb));
+ ca = center pica;
+ cb = center picb;
+ if (xpart ca) < (xpart cb) - ( rxa + rxb ):
+ if (ypart ca) < (ypart cb) - ( rya + ryb ):
+ rbconnect( pica, picb )
+ elseif (ypart ca) > (ypart cb) + ( rya + ryb ):
+ rtconnect( pica, picb )
+ else:
+ rlconnect( pica, picb )
+ fi
+ elseif (xpart ca) > (xpart cb) + ( rxa + rxb ):
+ if (ypart ca) < (ypart cb) - ( rya + ryb ):
+ lbconnect( pica, picb )
+ elseif (ypart ca) > (ypart cb) + ( rya + ryb ):
+ ltconnect( pica, picb )
+ else:
+ lrconnect( pica, picb )
+ fi
+ else:
+ if (ypart ca) < (ypart cb) - ( rya + ryb ):
+ tbconnect( pica, picb )
+ elseif (ypart ca) > (ypart cb) + ( rya + ryb ):
+ btconnect( pica, picb )
+ else:
+ hvconnect( center pica, center picb )
+ fi
+ fi
+ endgroup
+enddef;
diff --git a/Master/texmf-dist/metapost/blockdraw_mp/bonddemo.mp b/Master/texmf-dist/metapost/blockdraw_mp/bonddemo.mp
new file mode 100644
index 00000000000..3f74bd9abe9
--- /dev/null
+++ b/Master/texmf-dist/metapost/blockdraw_mp/bonddemo.mp
@@ -0,0 +1,63 @@
+verbatimtex
+%& latex
+\documentclass[a4]{article}
+\begin{document}
+etex
+
+input bondgraph;
+def pjunction(expr z ) =
+ junction( btex p etex, z )
+enddef;
+def sjunction(expr z ) =
+ junction( btex s etex, z )
+enddef;
+def tfjunction(expr z, arrowdir, lbl ) =
+ junctionlbl( btex TF etex, arrowdir, lbl, z, true )
+enddef;
+def gyjunction(expr z, arrowdir, lbl ) =
+ junctionlbl( btex GY etex, arrowdir, lbl, z, false )
+enddef;
+
+beginfig( -1 )
+ numeric u;
+ u := 2cm;
+ ahlength := 0.15*u;
+
+ picture j[];
+ j1 := sjunction( (1u,1u) );
+ j2 := gyjunction( (2u,1u), to_rt, btex $\mu$ etex );
+ j3 := sjunction( (3u,1u) );
+ j4 := tfjunction( (4u,1u), to_rt, btex $r$ etex );
+ j5 := pjunction( (5u,1u) );
+ j6 := sjunction( (5u,-0.5u) );
+ j7 := sjunction( (5u,2u) );
+
+ tbond( bgconnect( j1, j2 ) );
+ hbond( bgconnect( j2, j3 ) );
+ tbond( bgconnect( j3, j4 ) );
+ tbond( bgconnect( j4, j5 ) );
+ hbond( bgconnect( j5, j6 ) );
+ tbond( bgconnect( j5, j7 ) );
+
+ tbond( terminalfr( j1, btex R: $\phi_{1}(\bullet)$ etex, (1u,0u) ) );
+ hbond( terminalfr( j1, btex I: $m_{1}$ etex, (1u,2u) ) );
+ hbond( terminalfr( j3, btex I: $m_{2}$ etex, (3u,2u) ) );
+ tbond( terminalfr( j3, btex R: $R_{2}$ etex, (center j3)+1u*dir(-120) ) );
+ tbond( terminalfr( j3, btex R: $R_{3}$ etex, (center j3)+1u*dir(-60) ) );
+
+ hbond( terminalto( j6, btex $S_{\mathrm{e}}$ etex, (center j6)+(-1u,0u) ) );
+ hbond( terminalfr( j6, btex I: $m_{3}$ etex, (center j6)+(1u,0u) ) );
+
+ tbond( terminalfr( j7, btex C: $C_{1}$ etex, (4u,2u) ) );
+ tbond( terminalfr( j7, btex R: $R_{1}$ etex, (6u,2u) ) );
+
+ path con;
+ picture lab;
+
+ con := terminalto( j1, btex $S_{\mathrm{e}}$ etex, (0u,1u) );
+ hbond( con );
+ flowlabel( con, btex f etex );
+ effortlabel( con, btex e etex );
+
+endfig;
+end;
diff --git a/Master/texmf-dist/metapost/blockdraw_mp/bondgraph.mp b/Master/texmf-dist/metapost/blockdraw_mp/bondgraph.mp
new file mode 100644
index 00000000000..ba5d861d14d
--- /dev/null
+++ b/Master/texmf-dist/metapost/blockdraw_mp/bondgraph.mp
@@ -0,0 +1,226 @@
+%% bondgraph.mp
+%% Copyright 2007 Henrik Tidefelt
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained´.
+%
+% The Current Maintainer of this work is Henrik Tidefelt,
+% tidefelt@isy.liu.se.
+%
+% This work, referred to as blockdraw.mp, consists of the files
+% shiftoff.mp
+% blockdraw.mp
+% bondgraph.mp
+% blockdraw_mp.pdf
+%
+%
+% === Notes regarding the backward incompatible changes of 2007-01-21. ===
+%
+% As it was discovered that MetaPost uses the verbatimtex construct only in
+% the file it appears in, it was concluded that package files cannot contain
+% any content that depends on the LaTeX preamble. In other words, any
+% btex ... etex constructs must be moved from package files to the application
+% sources from where the package files are included.
+%
+% With the definition of, say, p-junction blocks in the application source,
+% it is easy to change notation from the letters "p" and "s" to the numbers
+% "0" and "1".
+%
+% The obvious drawback, beside backward incompatibility, is that this will
+% cause a lot of code replication, making bond graph source files
+% less concise, and require multiple file search-and-replace actions when
+% changing junction notation for a collection of graphs. However, since
+% MetaPost only allows literal character strings in the btex ... etex
+% construct, these inconveniences seem impossible to work around. Ideas,
+% anyone?
+
+input blockdraw;
+implicitdraw := false;
+
+boolean junctionimplicitdraw;
+junctionimplicitdraw := true;
+
+boolean useopenbonds;
+useopenbonds := false;
+
+connectionlw := 0.5pt;
+ahlength := 3mm;
+bboxmargin := 1.5mm;
+
+def withbbmargin(expr pic ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic = pic;
+ setbounds tmppic to bbox pic;
+ tmppic
+ endgroup
+enddef;
+
+def junction(expr txt, z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic also shiftoff( txt scaled textscale, to_center );
+ setbounds tmppic to (-smallblockr,-smallblockr)--(-smallblockr,smallblockr)--(smallblockr,smallblockr)--(smallblockr,-smallblockr)--cycle;
+ tmppic := tmppic shifted z;
+ if junctionimplicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+
+
+def junctionlbl(expr txt, arrowdir, lbl, z, arrow ) =
+ begingroup
+ save tmppic, ahlength, p, d;
+ ahlength := 1mm;
+ path p;
+ numeric d;
+ picture tmppic;
+ tmppic := nullpicture;
+ addto tmppic also shiftoff( txt scaled textscale, to_center );
+
+ if arrowdir = to_top:
+ p := ((lrcorner tmppic)--(urcorner tmppic)) shifted ( z + (connectionlw + 2*ahlength*sind(0.5*ahangle),0) );
+ d = to_rt;
+ elseif arrowdir = to_lft:
+ p := ((urcorner tmppic)--(ulcorner tmppic)) shifted ( z + (0,connectionlw + 2*ahlength*sind(0.5*ahangle)) );
+ d = to_top;
+ elseif arrowdir = to_bot:
+ p := ((urcorner tmppic)--(lrcorner tmppic)) shifted ( z + (connectionlw + 2*ahlength*sind(0.5*ahangle),0) );
+ d = to_rt;
+ elseif arrowdir = to_rt:
+ p := ((ulcorner tmppic)--(urcorner tmppic)) shifted ( z + (0,connectionlw + 2*ahlength*sind(0.5*ahangle)) );
+ d = to_top;
+ fi
+
+ setbounds tmppic to (-smallblockr,-smallblockr)--(-smallblockr,smallblockr)--(smallblockr,smallblockr)--(smallblockr,-smallblockr)--cycle;
+ tmppic := tmppic shifted z;
+
+ if junctionimplicitdraw:
+ if arrow:
+ drawarrow p withpen pencircle scaled connectionlw;
+ fi
+ draw conlabel( d, lbl, mspoint( p, 0.5, 0 ) );
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+
+def terminal(expr d, txt, z ) =
+ begingroup
+ save tmppic;
+ picture tmppic;
+ tmppic := shiftoff( withbbmargin( txt scaled textscale ), d ) shifted ( z - smallblockr * dir_to( d ) );
+ if junctionimplicitdraw:
+ draw tmppic;
+ fi
+ tmppic
+ endgroup
+enddef;
+
+def ignorepicture(expr pic ) =
+ show 0
+enddef;
+
+def terminalto(expr j, txt, z ) =
+ begingroup
+ ignorepicture( terminal( to_dir( z - (center j) ), txt, z ) );
+ bgconnect( pointpicture( z ) , j )
+ endgroup
+enddef;
+
+def terminalfr(expr j, txt, z ) =
+ begingroup
+ ignorepicture( terminal( to_dir( z - (center j) ), txt, z ) );
+ bgconnect( j, pointpicture( z ) )
+ endgroup
+enddef;
+
+def bgconnect(expr pica, picb ) =
+ begingroup
+ save d;
+ pair d;
+ if (center pica) = (center picb):
+ d := (1,0);
+ else:
+ d := unitvector( (center picb) - (center pica) );
+ fi
+ ((center pica)+d*smallblockr)--((center picb)-d*smallblockr)
+ endgroup
+enddef;
+
+def bond(expr p ) =
+ begingroup
+ save t;
+ numeric t;
+ t := arctime arclength(p) - ahlength of p;
+ save z;
+ pair z;
+ z = (point t of p) + dir(angle(direction t of p)+90) * ahlength*sind(0.5*ahangle);
+ save res;
+ path res;
+ if useopenbonds:
+ draw p--z withpen pencircle scaled connectionlw
+ else:
+ draw p withpen pencircle scaled connectionlw;
+ res = (subpath (t,infinity) of p)--z--cycle;
+ filldraw res withpen pencircle scaled connectionlw
+ fi
+ endgroup
+enddef;
+
+def causalmark(expr p, where ) =
+ begingroup
+ save d;
+ numeric d;
+ d = angle( direction where of p );
+ if where = 0:
+ d := d + 180;
+ fi
+ save z;
+ pair z;
+ z = ( point where of p ) + dir(d) * connectionlw;
+ save res;
+ path res;
+ res = (z+dir(d+90)*ahlength*sind(0.5*ahangle))--(z+dir(d-90)*ahlength*sind(0.5*ahangle));
+ draw res withpen pencircle scaled (2*connectionlw)
+ endgroup
+enddef;
+
+def hbond(expr p ) =
+ begingroup
+ bond( p );
+ causalmark( p, infinity )
+ endgroup
+enddef;
+
+def tbond(expr p ) =
+ begingroup
+ bond( p );
+ causalmark( p, 0 )
+ endgroup
+enddef;
+
+def flowlabel(expr p, txt ) =
+% the midpoint has typically singular direction, so we can't do the obvious:
+% draw( conlabel( to_dir( dir( angle( direction (0.5*length(p)) of p ) - 90 ) ), txt, mspoint( p, 0.5, 0 ) ) )
+ draw conlabel( to_dir( dir( angle( (point infinity of p) - (point 0 of p) ) - 90 ) ), txt, mspoint( p, 0.5, 0 ) ) withpen pencircle scaled connectionlw
+enddef;
+
+def effortlabel(expr p, txt ) =
+% the midpoint has typically singular direction, so we can't do the obvious:
+% draw( conlabel( to_dir( dir( angle( direction (0.5*length(p)) of p ) + 90 ) ), txt, mspoint( p, 0.5, 0 ) ) )
+ draw conlabel( to_dir( dir( angle( (point infinity of p) - (point 0 of p) ) + 90 ) ), txt, mspoint( p, 0.5, 0 ) ) withpen pencircle scaled connectionlw
+enddef;
diff --git a/Master/texmf-dist/metapost/blockdraw_mp/cascadedemo.mp b/Master/texmf-dist/metapost/blockdraw_mp/cascadedemo.mp
new file mode 100644
index 00000000000..26c919bb83a
--- /dev/null
+++ b/Master/texmf-dist/metapost/blockdraw_mp/cascadedemo.mp
@@ -0,0 +1,73 @@
+verbatimtex
+%& latex
+\documentclass[a4]{article}
+\begin{document}
+etex
+
+input blockdraw;
+input ./docblockprefs;
+
+
+beginfig( -1 )
+
+ % The controller box has corners (x1,y1), (x2,y2)
+ % The inner system box has corners (x3,y3), (x4,y4)
+ y1 := -2u;
+ y2 := 1.3u;
+ y3 := -1.4u;
+ y4 := 1u;
+
+ picture reg[];
+ reg1 := longblock( btex Reg.~1 etex, (-1u,0) );
+ reg2 := longblock( btex Reg.~2 etex, (-4u,0) );
+
+ picture G[];
+ G1 := longblock( btex $G_{1}$ etex, (1.5u,0) );
+ G2 := longblock( btex $G_{2}$ etex, (4u,0) );
+
+ picture terminator[];
+ terminator1 := pointpicture( leftpoint( reg2, 2, 2 ) - (1u,0) );
+ terminator2 := pointpicture( (5.5u,0) );
+
+ path con;
+ picture lab;
+
+ con := hhconnect( center( terminator1 ), leftpoint( reg2, 2, 2 ), 0.5, 0 );
+ lab := conlabel( to_ulft, btex $y_{\mathrm{ref}}$ etex, point infinity of con );
+ x1 := xpart( mspoint( con, 0.2, 0 ) );
+
+ con := hhconnect( rightpoint( reg2, 2, 2 ), leftpoint( reg1, 2, 2 ), 0.5, 0 );
+ lab := conlabel( to_urt, btex $z_{\mathrm{ref}}$ etex, point 0 of con );
+ x3 := xpart( mspoint( con, 0.6, 0 ) );
+
+ con := rlconnect( reg1, G1 );
+ lab := conlabel( to_top, btex $u$ etex, mspoint( con, 0.8, 0 ) );
+ x2 := xpart( mspoint( con, 0.3, 0 ) );
+
+ picture split[];
+
+ con := rlconnect( G1, G2 );
+ lab := conlabel( to_top, btex $z$ etex, mspoint( con, 0.8, 0 ) );
+ split1 := splitdot( mspoint( con, 0.3, 0 ) );
+ x4 := xpart( mspoint( con, 0.5, 0 ) );
+
+ con := rlconnect( G2, terminator2 );
+ lab := conlabel( to_top, btex $y$ etex, mspoint( con, 0.8, 0 ) );
+ split2 := splitdot( mspoint( con, 0.4, 0 ) );
+
+ % Draw boxes
+ draw (x1,y1)--(x1,y2)--(x2,y2)--(x2,y1)--cycle withpen pencircle scaled dashlw dashed gldash1;
+ draw (x3,y3)--(x3,y4)--(x4,y4)--(x4,y3)--cycle withpen pencircle scaled dashlw dashed gldash2;
+
+ % Draw broken connections
+ pair p;
+ p := ( x2, 0.5[y1,y3] );
+ con := vhconnect( center split2, p );
+ con := hhconnect( p, leftpoint( reg2, 2, 1 ), 1, 0.4u );
+
+ p := ( x2, 1.5[y1,y3] );
+ con := vhconnect( center split1, p );
+ con := hhconnect( p, leftpoint( reg1, 2, 1 ), 1, 0.4u );
+
+endfig;
+end;
diff --git a/Master/texmf-dist/metapost/blockdraw_mp/docblockprefs.mp b/Master/texmf-dist/metapost/blockdraw_mp/docblockprefs.mp
new file mode 100644
index 00000000000..1aa63c0f01e
--- /dev/null
+++ b/Master/texmf-dist/metapost/blockdraw_mp/docblockprefs.mp
@@ -0,0 +1,18 @@
+numeric u;
+u := 1cm;
+
+numeric dashlw;
+dashlw := 0.3pt;
+picture gldash[];
+gldash1 := dashpattern( on 0.25u off 0.25u );
+gldash2 := dashpattern( on 0.5u off 0.1u on 0.1u off 0.1u on 0.1u off 0.1u );
+
+longblockrx := 0.7u;
+longblockry := 0.4u;
+smallblockr := 0.3u;
+connectionlw := 0.8pt;
+textscale := 1;
+
+shiftofflabelmargin := 2bboxmargin;
+pickup pencircle scaled connectionlw;
+
diff --git a/Master/texmf-dist/metapost/blockdraw_mp/shiftoff.mp b/Master/texmf-dist/metapost/blockdraw_mp/shiftoff.mp
new file mode 100644
index 00000000000..b5ad73f834c
--- /dev/null
+++ b/Master/texmf-dist/metapost/blockdraw_mp/shiftoff.mp
@@ -0,0 +1,130 @@
+%% shiftoff.mp
+%% Copyright 2006 Henrik Tidefelt
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained´.
+%
+% The Current Maintainer of this work is Henrik Tidefelt,
+% tidefelt@isy.liu.se.
+%
+% This work, referred to as blockdraw.mp, consists of the files
+% shiftoff.mp
+% blockdraw.mp
+% bondgraph.mp
+% blockdraw_mp.pdf
+
+numeric to_lft;
+to_lft = 0;
+numeric to_llft;
+to_llft = 1;
+numeric to_bot;
+to_bot = 2;
+numeric to_lrt;
+to_lrt = 3;
+numeric to_rt;
+to_rt = 4;
+numeric to_urt;
+to_urt = 5;
+numeric to_top;
+to_top = 6;
+numeric to_ulft;
+to_ulft = 7;
+numeric to_center;
+to_center = 8;
+
+def to_dir(expr z ) =
+ if (xpart z) > 0:
+ if (ypart z) > 0:
+ if abs(xpart z) > 2*abs(ypart z):
+ to_rt
+ elseif abs(ypart z) > 2*abs(xpart z):
+ to_top
+ else:
+ to_urt
+ fi
+ else:
+ if abs(xpart z) > 2*abs(ypart z):
+ to_rt
+ elseif abs(ypart z) > 2*abs(xpart z):
+ to_bot
+ else:
+ to_lrt
+ fi
+ fi
+ else:
+ if (ypart z) > 0:
+ if abs(xpart z) > 2*abs(ypart z):
+ to_lft
+ elseif abs(ypart z) > 2*abs(xpart z):
+ to_top
+ else:
+ to_ulft
+ fi
+ else:
+ if abs(xpart z) > 2*abs(ypart z):
+ to_lft
+ elseif abs(ypart z) > 2*abs(xpart z):
+ to_bot
+ else:
+ to_llft
+ fi
+ fi
+ fi
+enddef;
+
+def dir_to(expr d ) =
+ dir( 180 + d * 45 )
+enddef;
+
+def shiftoff(expr pic, corner ) =
+ if corner = to_lft:
+ (pic shifted ((-center pic)+((xpart llcorner pic)-(xpart center pic),0)))
+ elseif corner = to_llft:
+ (pic shifted ((-center pic)+(llcorner pic)-(center pic)))
+ elseif corner = to_bot:
+ (pic shifted ((-center pic)+(0,(ypart llcorner pic)-(ypart center pic))))
+ elseif corner = to_lrt:
+ (pic shifted ((-center pic)+(lrcorner pic)-(center pic)))
+ elseif corner = to_rt:
+ (pic shifted ((-center pic)+((xpart lrcorner pic)-(xpart center pic),0)))
+ elseif corner = to_urt:
+ (pic shifted ((-center pic)+(urcorner pic)-(center pic)))
+ elseif corner = to_top:
+ (pic shifted ((-center pic)+(0,(ypart ulcorner pic)-(ypart center pic))))
+ elseif corner = to_ulft:
+ (pic shifted ((-center pic)+(ulcorner pic)-(center pic)))
+ else:
+ (pic shifted (-center pic))
+ fi
+enddef;
+
+numeric shiftofflabelmargin;
+shiftofflabelmargin := bboxmargin;
+def shiftoffwlm(expr pic, corner ) =
+ if corner = to_lft:
+ (pic shifted ((-center pic)+((xpart llcorner pic)-(xpart center pic),0)+(-shiftofflabelmargin,0)))
+ elseif corner = to_llft:
+ (pic shifted ((-center pic)+(llcorner pic)-(center pic)+(-shiftofflabelmargin,-shiftofflabelmargin)))
+ elseif corner = to_bot:
+ (pic shifted ((-center pic)+(0,(ypart llcorner pic)-(ypart center pic))+(0,-shiftofflabelmargin)))
+ elseif corner = to_lrt:
+ (pic shifted ((-center pic)+(lrcorner pic)-(center pic)+(shiftofflabelmargin,-shiftofflabelmargin)))
+ elseif corner = to_rt:
+ (pic shifted ((-center pic)+((xpart lrcorner pic)-(xpart center pic),0)+(shiftofflabelmargin,0)))
+ elseif corner = to_urt:
+ (pic shifted ((-center pic)+(urcorner pic)-(center pic)+(shiftofflabelmargin,shiftofflabelmargin)))
+ elseif corner = to_top:
+ (pic shifted ((-center pic)+(0,(ypart ulcorner pic)-(ypart center pic))+(0,shiftofflabelmargin)))
+ elseif corner = to_ulft:
+ (pic shifted ((-center pic)+(ulcorner pic)-(center pic)+(-shiftofflabelmargin,shiftofflabelmargin)))
+ else:
+ (pic shifted (-center pic))
+ fi
+enddef;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 01:53:40 +0000