diff options
Diffstat (limited to 'Master')
| -rw-r--r-- | Master/texmf-dist/doc/latex/sfg/Changes | 4 | ||||
| -rw-r--r-- | Master/texmf-dist/doc/latex/sfg/README | 7 | ||||
| -rw-r--r-- | Master/texmf-dist/doc/latex/sfg/sfg_test.tex | 35 | ||||
| -rw-r--r-- | Master/texmf-dist/tex/latex/sfg/sfg.sty | 499 | ||||
| -rw-r--r-- | Master/tlpkg/tlpsrc/collection-science.tlpsrc | 1 | ||||
| -rw-r--r-- | Master/tlpkg/tlpsrc/sfg.tlpsrc | 2 |
6 files changed, 548 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/latex/sfg/Changes b/Master/texmf-dist/doc/latex/sfg/Changes new file mode 100644 index 00000000000..32dc83a528e --- /dev/null +++ b/Master/texmf-dist/doc/latex/sfg/Changes @@ -0,0 +1,4 @@ +0.91 2007-08-22 - add LPPL license + - change \scalebox to \psscalebox to prevent + a conflict with package graphicx (hv) +0.90 1998-07-19 first CTAN version (hps) diff --git a/Master/texmf-dist/doc/latex/sfg/README b/Master/texmf-dist/doc/latex/sfg/README new file mode 100644 index 00000000000..6c395602a26 --- /dev/null +++ b/Master/texmf-dist/doc/latex/sfg/README @@ -0,0 +1,7 @@ +%@(#) sfg.sty: Signal flow graphs +% This is the style file sfg.sty for drawing signal flow graphs in LaTeX2e. + +You'll find a short documentation at the end of the style file + +---- +hv 2007/08/22 diff --git a/Master/texmf-dist/doc/latex/sfg/sfg_test.tex b/Master/texmf-dist/doc/latex/sfg/sfg_test.tex new file mode 100644 index 00000000000..f9a1cc2f3d5 --- /dev/null +++ b/Master/texmf-dist/doc/latex/sfg/sfg_test.tex @@ -0,0 +1,35 @@ +\documentclass[11pt,a4paper]{article} +\usepackage{graphics,pstricks,sfg} +\pagestyle{empty} +\setlength{\parindent}{0pt} + +\begin{document} +\sfgsetunit{0.5cm} +\sfgsetsize{0.12}{0.4}{0.5}{0.3} +\sfgsetcompass +\begin{picture}(27,4) + % branches related to node 2 + \put(6,2){\sfgbranch{3}{0}\S{$\frac{1}{R_1}$}} + \put(9,2){\sfgbranch{3}{0}\N{\boldmath $Z_2$}} + \put(18,2){\sfgcurve{-9}{0}{2}\S{$\frac{1}{R_2}$}} + \put(24,2){\sfgcurve{-15}{0}{-2}\N{$sC_1$}} + % branches related to node 3 + \put(12,2){\sfgbranch{3}{0}\N{$\frac{1}{R_2}$}} + \put(15,2){\sfgbranch{3}{0}\N{\boldmath $Z_3$}} + % input, voltage gain, output + \put(0,2){\sfgcurve{6}{0}{2}\N{$1$}} + \put(18,2){\sfgcurve{6}{0}{-2}\S{$\alpha_{\mathrm{V}}$}} + \put(24,2){\sfgbranch{3}{0}\S{$1$}} + % nodes + \put(0,2){\sfgtermnode\S{$V_{\mathrm{in}}$}} + \put(3,2){\sfgnode\S{$I_1$}} + \put(6,2){\sfgnode\S{$V_1$}} + \put(9,2){\sfgnode\S{$I_2$}} + \put(12,2){\sfgnode\S{$V_2$}} + \put(15,2){\sfgnode\S{$I_3$}} + \put(18,2){\sfgnode\S{$V_3$}} + \put(21,2){\sfgnode\S{$I_4$}} + \put(24,2){\sfgnode\S{$V_4$}} + \put(27,2){\sfgtermnode\S{$V_{\mathrm{out}}$}} +\end{picture} +\end{document} diff --git a/Master/texmf-dist/tex/latex/sfg/sfg.sty b/Master/texmf-dist/tex/latex/sfg/sfg.sty new file mode 100644 index 00000000000..8398b2c6c34 --- /dev/null +++ b/Master/texmf-dist/tex/latex/sfg/sfg.sty @@ -0,0 +1,499 @@ +%@(#) sfg.sty: Signal flow graphs +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% This is the style file sfg.sty for drawing signal flow graphs in LaTeX2e. +% +% Version 0.9, 1.7.1998, Hanspeter Schmid +% Version 0.91, 22.08.2007 hv scalebox->\psscalebox +% +% If you find an error, or if you want me to implement some more +% functions, want me to include more references to books on sfgs, +% or if you just want to say `hello thank you, I find you package +% useful', please don't hesitate and contact me: +% +% Hanspeter Schmid, schmid@isi.ee.ethz.ch, +% http://www.isi.ee.ethz.ch/~schmid/ +% +%% This program can be redistributed and/or modified under the terms +%% of the LaTeX Project Public License Distributed from CTAN +%% archives in directory macros/latex/base/lppl.txt. +% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% History: (Version numbers are going towards 3/pi. +% sfg.sty is not good enough yet to be called v1.0) +% +% created: 26.1.96, hps, (v0) +% modified for submission to CTAN: 1.7.98, hps, (v0.9) +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% Plans: - make a proper dtx-file out of this mess. I'll do this if +% and when I find the time to do it. +% - include an sfg branch which has snake form, e.g. \sfgsnake +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% SEE DESCRIPTION AFTER THE \endinput +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\NeedsTeXFormat{LaTeX2e} +\RequirePackage[nomessages]{fp} +\RequirePackage{pstricks} +\ProvidesPackage{sfg}[2007/08/22] +\typeout{Style sfg, by Hanspeter Schmid, version 0.91}% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% Line thicknesses: +\newdimen\sfg@Li \sfg@Li=0.40pt % normal lines (LaTeX `thin') +\newdimen\sfg@Lii \sfg@Lii=1.80\sfg@Li % thick lines (`thick') (hacked) +\newdimen\sfg@Liii \sfg@Liii=3\sfg@Li % thickness of heavy lines +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% internal functions +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\def\sfg@degtorad{0.01745329252}% conversion factor deg -> rad +\def\sfg@radtodeg{57.2957795132}% conversion factor rad -> deg + +\def\sfg@curvescale{0.577350269}% standard sfgcurve angle, cot(60 deg) + +\def\sfg@arrowloc{0.5} % standard location of the arrow is in + % the middle of an sfg branch + + % calculate the angle of vector (#1,#2) + % in degrees, given that #1 + % is positive, ... + % ... and finally add #3. +\def\sfg@angleadd#1#2#3{{% % formula: arcsin(#3/sqrt(#1^2+#2^2)) + \FPmul\sfg@xx{#1}{#1}\FPmul\sfg@yy{#2}{#2}% + \FPadd\sfg@rr\sfg@xx\sfg@yy\FProot\sfg@len\sfg@rr{2}% + % calculate length of vector + \FPdiv\sfg@sin{#2}\sfg@len\FParcsin\sfg@result\sfg@sin% angle + \FPmul\sfg@resultb\sfg@result\sfg@radtodeg% + \FPadd\sfg@result\sfg@resultb{#3}% + \FPtrunc\sfg@angle\sfg@result{2}\global\let\sfg@angle\sfg@angle}}% + + % ... and finally subtract from #3. +\def\sfg@anglesub#1#2#3{{% + \FPmul\sfg@xx{#1}{#1}\FPmul\sfg@yy{#2}{#2}% + \FPadd\sfg@rr\sfg@xx\sfg@yy\FProot\sfg@len\sfg@rr{2}% + % calculate length of vector + \FPdiv\sfg@sin{#2}\sfg@len\FParcsin\sfg@result\sfg@sin% angle + \FPmul\sfg@resultb\sfg@result\sfg@radtodeg% + \FPsub\sfg@result{#3}\sfg@resultb% + \FPtrunc\sfg@angle\sfg@result{2}\global\let\sfg@angle\sfg@angle}}% + + +\def\sfg@arrow#1{% % rotateable bezier-curve based arrow + \begin{picture}(0,0){% % zero-dimensional + \rput{#1}(0,0){% % rotate counter-clockwise by #1 degrees + \psscalebox{\sfg@arrowlen}{% scale by factor \sfg@arrowlen + \pscustom*[linetype=1,linewidth=\sfg@Li]{% draw arrow + \psbezier(0.5,0)(0.15,-0.0825)(-0.075,-0.1625)(-0.5,-0.375)% + \psline(-0.5,0.375)% + \psbezier(-0.075,0.1625)(0.15,0.0825)(0.5,0)}}}}% + \end{picture}}% + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% functions to configure the signal flow graphs +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + % set the package's numerical parameters + +\def\sfgsetunit#1{% % unitlength + \setlength{\unitlength}{#1}% + \psset{unit=#1, linewidth=\sfg@Li}}% + +\def\sfgsetangle#1{% % incidence angle of sfgcurves + {\FPmul\sfg@tmp\sfg@degtorad{#1}% + \FPcot\sfg@curvescale\sfg@tmp% + \global\let\sfg@curvescale\sfg@curvescale}}% + +\def\sfgsetarrowloc#1{% % location of the arrow on sfgbranches + \def\sfg@arrowloc{#1}}% + +\def\sfgsetsize#1#2#3#4{% % size of arrows and nodes ... + \gdef\sfg@noderad{#1}\gdef\sfg@arrowlen{#2}% + \gdef\sfg@nlabel{#3}\gdef\sfg@alabel{#4}% + % label distances for \NW, \NE, \SW, \SE + \FPmul\sfg@nlabeld{#3}{0.707106781188}% multiply with 1/sqrt(2) + \global\let\sfg@nlabeld\sfg@nlabeld% + \FPmul\sfg@alabeld{#3}{0.707106781188}% + \global\let\sfg@alabeld\sfg@alabeld% + }% + +\def\sfgsetlines#1#2#3{% % line thicknesses + \sfg@Li=#1\sfg@Lii=#2\sfg@Li\sfg@Liii=#3\sfg@Li% + \psset{linewidth=\sfg@Li}} + +\def\sfgsetcompass{% % define macros for label placement + \gdef\E{0}\gdef\NE{1}\gdef\N{2}\gdef\NW{3}% + \gdef\W{4}\gdef\SW{5}\gdef\S{6}\gdef\SE{7}} + +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% drawing signal flow graphs +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\def\sfgtermnode#1#2{% % terminal node (white with black line} + \begin{picture}(0,0){% % zero-size pictures make life easier + \put(0,0){% + % circle, radius \sfg@noderad + \pscircle*[linecolor=white,dimen=outer](0,0){\sfg@noderad}% + \pscircle[linewidth=\sfg@Lii](0,0){\sfg@noderad}}% + % label placement + \ifcase#1 % E (east) + % text #2 in a distance of \sfg@nlabel + \put(\sfg@nlabel,0){\makebox(0,0)[l]{#2}}% + \or % NE (north-east) + \put(\sfg@nlabeld,\sfg@nlabeld){\makebox(0,0)[bl]{#2}}% + \or % N (...) + \put(0,\sfg@nlabel){\makebox(0,0)[b]{#2}}% + \or % NW (\sfg@tmp := -\sfg@nlabel) + \FPneg\sfg@tmp{\sfg@nlabeld}% + \put(\sfg@tmp,\sfg@nlabeld){\makebox(0,0)[br]{#2}}% + \or % W + \FPneg\sfg@tmp{\sfg@nlabel}% + \put(\sfg@tmp,0){\makebox(0,0)[r]{#2}}% + \or % SW + \FPneg\sfg@tmp{\sfg@nlabeld}% + \put(\sfg@tmp,\sfg@tmp){\makebox(0,0)[tr]{#2}}% + \or % S + \FPneg\sfg@tmp{\sfg@nlabel}% + \put(0,\sfg@tmp){\makebox(0,0)[t]{#2}}% + \or % SE + \FPneg\sfg@tmp{\sfg@nlabeld}% + \put(\sfg@nlabeld,\sfg@tmp){\makebox(0,0)[tl]{#2}}% + \else % no label + \PackageWarning{sfg}% + {sfgtermnode: label placement option #1 unknown}% + \fi% + }\end{picture}}% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\def\sfgnode#1#2{% % normal node (just black) + \begin{picture}(0,0){% + \put(0,0){% + \pscircle*[linewidth=0pt](0,0){\sfg@noderad}}% filled circle + % label placement, comments -> sfgtermnode + \ifcase#1 \put(\sfg@nlabel,0){\makebox(0,0)[l]{#2}}% + \or\put(\sfg@nlabeld,\sfg@nlabeld){\makebox(0,0)[bl]{#2}}% + \or\put(0,\sfg@nlabel){\makebox(0,0)[b]{#2}}% + \or\FPneg\sfg@tmp{\sfg@nlabeld}% + \put(\sfg@tmp,\sfg@nlabeld){\makebox(0,0)[br]{#2}}% + \or\FPneg\sfg@tmp{\sfg@nlabel}% + \put(\sfg@tmp,0){\makebox(0,0)[r]{#2}}% + \or\FPneg\sfg@tmp{\sfg@nlabeld}% + \put(\sfg@tmp,\sfg@tmp){\makebox(0,0)[tr]{#2}}% + \or\FPneg\sfg@tmp{\sfg@nlabel}% + \put(0,\sfg@tmp){\makebox(0,0)[t]{#2}}% + \or\FPneg\sfg@tmp{\sfg@nlabeld}% + \put(\sfg@nlabeld,\sfg@tmp){\makebox(0,0)[tl]{#2}}% + \else\PackageWarning{sfg}% + {sfgnode: label placement option #1 unknown}% + \fi% + }\end{picture}}% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\def\sfgbranch#1#2#3#4{% % straight sfg branch + \begin{picture}(0,0){% + % determine in which quadrant the vector's + % end point (x,y) lies (x=#1, y=#2) + \FPset\sfg@flag{0}% % use a bit-flag + \FPifzero{#1}\FPadd\sfg@flag\sfg@flag{1}\fi% % x=0 -> bit 0 + \FPifneg{#1}\FPadd\sfg@flag\sfg@flag{2}\fi% % x<0 -> bit 1 + \FPifzero{#2}\FPadd\sfg@flag\sfg@flag{4}\fi% % y=0 -> bit 2 + \FPifneg{#2}\FPadd\sfg@flag\sfg@flag{8}\fi% % y<0 -> bit 3 + % case-distinction: correct the main values + % of arcsin + % #2#1 + % -0-0 + \ifcase\sfg@flag % 0000 first quadrant + \sfg@angleadd{#1}{#2}{0}% + \or % 0001 positive y-axis + \FPset\sfg@angle{90}% + \or % 0010 second quadrant + \sfg@anglesub{#1}{#2}{180}% + \or % 0011 impossible + \or % 0100 positive x-axis + \FPset\sfg@angle{0}% + \or % 0101 zero vector + \FPset\sfg@angle{0}% + \PackageWarning{sfg}{sfgbranch: zero-length branch drawn.}% + \or % 0110 negative x-axis + \FPset\sfg@angle{180}% + \or % 0111 impossible + \or % 1000 third quadrant + \sfg@angleadd{#1}{#2}{0}% + \or % 1001 negative y-axis + \FPset\sfg@angle{-90}% + \or % 1010 fourth quadrant + \sfg@anglesub{#1}{#2}{180}% + \else % every other bit pattern is impossible. + \fi % % now draw the line + \put(0,0){\psline[linewidth=\sfg@Li,arrows=C-C](0,0)(#1,#2)}% + % calculate centre of arrow and label + \FPmul\sfg@dx{#1}\sfg@arrowloc\FPmul\sfg@dy{#2}\sfg@arrowloc% + \put(\sfg@dx,\sfg@dy){% % place arrow and label + \sfg@arrow{\sfg@angle}% + % label placement (see sfgtermnode) + \ifcase#3\put(\sfg@alabel,0){\makebox(0,0)[l]{#4}}% + \or\put(\sfg@alabeld,\sfg@alabeld){\makebox(0,0)[bl]{#4}}% + \or\put(0,\sfg@alabel){\makebox(0,0)[b]{#4}}% + \or\FPneg\sfg@tmp{\sfg@alabeld}% + \put(\sfg@tmp,\sfg@alabeld){\makebox(0,0)[br]{#4}}% + \or\FPneg\sfg@tmp{\sfg@alabel}% + \put(\sfg@tmp,0){\makebox(0,0)[r]{#4}}% + \or\FPneg\sfg@tmp{\sfg@alabeld}% + \put(\sfg@tmp,\sfg@tmp){\makebox(0,0)[tr]{#4}}% + \or\FPneg\sfg@tmp{\sfg@alabel}% + \put(0,\sfg@tmp){\makebox(0,0)[t]{#4}}% + \or\FPneg\sfg@tmp{\sfg@alabeld}% + \put(\sfg@alabeld,\sfg@tmp){\makebox(0,0)[tl]{#4}}% + \else\PackageWarning{sfg}% + {sfgbranch: label placement option #3 unknown}% + \fi % + } % + }\end{picture}}% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\def\sfgcurve#1#2#3#4#5{% % curved sfg branch + \begin{picture}(0,0){% % qadrant ... (see sfgbranch) + \FPset\sfg@flag{0}% + \FPifzero{#1}\FPadd\sfg@flag\sfg@flag{1}\fi% + \FPifneg{#1}\FPadd\sfg@flag\sfg@flag{2}\fi% + \FPifzero{#2}\FPadd\sfg@flag\sfg@flag{4}\fi% + \FPifneg{#2}\FPadd\sfg@flag\sfg@flag{8}\fi% + \ifcase\sfg@flag\sfg@angleadd{#1}{#2}{0}% + \or\FPset\sfg@angle{90}% + \or\sfg@anglesub{#1}{#2}{180}% + \or\or\FPset\sfg@angle{0}% + \or\FPset\sfg@angle{0}% + \or\FPset\sfg@angle{180}% + \or\or\sfg@angleadd{#1}{#2}{0}% + \or\FPset\sfg@angle{-90}% + \or\sfg@anglesub{#1}{#2}{180}% + \else\fi % +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + {% % calculate path shift and new + % arrow location: + % mid: vector to the straight + % path's arrow midpoint + \FPmul\sfg@midx{#1}{0.5}\FPmul\sfg@midy{#2}{0.5}% + % p: rotate mid 90 degrees counterclockwise + \FPneg\sfg@px\sfg@midy\FPset\sfg@py\sfg@midx% + % len: length of p (and therefore mid) + \FPmul\sfg@xx\sfg@px\sfg@px\FPmul\sfg@yy\sfg@py\sfg@py% + \FPadd\sfg@rr\sfg@xx\sfg@yy\FProot\sfg@len\sfg@rr{2}% + % scale: #3/len + \FPdiv\sfg@scale{#3}\sfg@len% + % a: p scaled to the absolute length #3 + \FPmul\sfg@ax\sfg@px\sfg@scale\FPmul\sfg@ay\sfg@py\sfg@scale% + % d: mid+a; vector to the arrow centre + \FPadd\sfg@dx\sfg@ax\sfg@midx\FPadd\sfg@dy\sfg@ay\sfg@midy% + % export this value + \global\let\sfg@dx\sfg@dx\global\let\sfg@dy\sfg@dy% exported + % now calculate the four additional + % bezier points. Two of them are at the + % intersections of the tangents and + % the line parallel to mid through + % the point (dx,dy). + % Their distance from arrow centre: + % dist = len-(|#3|*cot(alpha)) + \FPabs\sfg@three{#3}\FPmul\sfg@tmp{\sfg@three}\sfg@curvescale% + \FPsub\sfg@dist\sfg@len\sfg@tmp% + % now compare this to 2*arrowlength, + % which is the minimum allowed value if + % sfg paths shouldn't look crippled + \FPmul\sfg@limit\sfg@arrowlen{2}% + \FPiflt\sfg@dist\sfg@limit% + \PackageWarning{sfg}% + {sfgcurve: incidence angle has been made steeper}% +l \FPset\sfg@dist\sfg@limit% + \fi% + % calculate the new scalefactor: + \FPdiv\sfg@scale\sfg@dist\sfg@len% + % a: mid scaled to length dist + \FPmul\sfg@ax\sfg@midx\sfg@scale\FPmul\sfg@ay\sfg@midy\sfg@scale% + % d.b = mid+a + \FPadd\sfg@dxb\sfg@ax\sfg@dx\FPadd\sfg@dyb\sfg@ay\sfg@dy% + % d.a = mid-a + \FPsub\sfg@dxa\sfg@dx\sfg@ax\FPsub\sfg@dya\sfg@dy\sfg@ay% + % Two more bezier points lie in between + % these points and the curves end points + % .i = (d.a)/2 + \FPdiv\sfg@xi\sfg@dxa{2}\FPdiv\sfg@yi\sfg@dya{2}% + % .iv = (d.b + (#1,#2) )/2 + \FPadd\sfg@tmpx\sfg@dxb{#1}\FPadd\sfg@tmpy\sfg@dyb{#2}% + \FPdiv\sfg@xiv\sfg@tmpx{2}\FPdiv\sfg@yiv\sfg@tmpy{2}% + % and now draw the path with bezier lines + \put(0,0){\psbezier[linewidth=\sfg@Li]{-}% + (0,0)(\sfg@xi,\sfg@yi)(\sfg@dxa,\sfg@dya)(\sfg@dx,\sfg@dy)}% + \put(0,0){\psbezier[linewidth=\sfg@Li]{-}% + (#1,#2)(\sfg@xiv,\sfg@yiv)(\sfg@dxb,\sfg@dyb)(\sfg@dx,\sfg@dy)}% + }% + \put(\sfg@dx,\sfg@dy){% + \sfg@arrow{\sfg@angle}% + % label placement (see sfgtermnode) + \ifcase#4\put(\sfg@alabel,0){\makebox(0,0)[l]{#5}}% + \or\put(\sfg@alabeld,\sfg@alabeld){\makebox(0,0)[bl]{#5}}% + \or\put(0,\sfg@alabel){\makebox(0,0)[b]{#5}}% + \or\FPneg\sfg@tmp{\sfg@alabeld}% + \put(\sfg@tmp,\sfg@alabeld){\makebox(0,0)[br]{#5}}% + \or\FPneg\sfg@tmp{\sfg@alabel}% + \put(\sfg@tmp,0){\makebox(0,0)[r]{#5}}% + \or\FPneg\sfg@tmp{\sfg@alabeld}% + \put(\sfg@tmp,\sfg@tmp){\makebox(0,0)[tr]{#5}}% + \or\FPneg\sfg@tmp{\sfg@alabel}% + \put(0,\sfg@tmp){\makebox(0,0)[t]{#5}}% + \or\FPneg\sfg@tmp{\sfg@alabeld}% + \put(\sfg@alabeld,\sfg@tmp){\makebox(0,0)[tl]{#5}}% + \else\PackageWarning{sfg}% + {sfgcurve: label placement option #4 unknown}% + \fi % + }}\end{picture}}% +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\endinput % That's it. I Hope you have a fast computer. +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +Documentation +~~~~~~~~~~~~~ +This style file defines some commands to draw signal flow graphs using +LaTeX2e. Signal flow graphs (sfg) are used by electrical and +electronics engineers and graph theorists. If you haven't heard of +sfgs before, then sfg.sty is probably not useful for you. + +If you really want to know what a signal flow graph is, you might read +one of the references given below. + +The package sfg requires the packages `pstricks' and `fp'. It +therefore requires LaTeX2e and a reasonably fast machine. + +To draw a signal flow graph, you should proceed as follows: + +1. Insert \usepackage{pstricks,sfg} in your LaTeX2e-file. +2. Draw your sfg on graph paper (*) and determine the size of the + picture in units (squares). + (*) I mean the paper with a 4mm, 5mm or 1/8in grid on it ... +3. Set the unitlength using \sfgsetunit. +4. Set the arrowlength, node radius and label offsets using \sfgsetsize. +5. In a LaTeX picture environment of the size you determined above, + - first draw all paths using \sfgbranch and \sfgcurve, + - then draw all nodes using \sfgnode and \sfgtermnode. + + +Setting the Controlling Parameters +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +\sfgsetunit{length} sets \unitlength and the PS unit to `length', and + defines the default pstricks linewidth as 0.4pt. This has an + influence on ALL ps-tricks commands that are used afterwards. + +\sfgsetsize{nr}{al}{no}{ao} sets the node radius to `nr' units, the + arrowlength to `al' units, the offset of the nodes' labels to + `no' units and the offset of the arrows' labels to `ao' units. + All four parameters are numbers. + +\sfgsetangle{an} sets the incidence angle of sfgcurves `an' degrees. + Default value: 60 degrees. + +\sfgsetarrowloc{mid} sets the location of the sfgbranch's arrow. 0.5 + means in the middle, 0.1 means 10% of the branch length from + the first node. + Default value: 0.5 + +\sfgsetlines{li_len}{lii}{liii} sets the line thickness \sfg@Li (used + for all lines) to `li_len', the thickness \sfg@Lii (used for + terminal nodes) to `lii'*`li_len', and the thickness \sfg@Liii + to `liii'*`li_len'. It also resets the default pstricks + linewidth to the new \sfg@Li. + + Default values: \sfg@Li=0.40pt + \sfg@Lii=1.80\sfg@Li + \sfg@Liii=3\sfg@Li + + +Drawing signal flow graph (sfg) branches +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +\sfgbranch{dx}{dy}{pos}{text} draws a straight sfg branch from (0,0) + to (dx,dy). An arrow is placed in the middle of the branch, + and a label `text' is typeset near the arrow. The parameter + `pos' is explained below (see \sfgnode). + + The distance of the label from the arrow's centre as well as + the arrow's length can be set using \sfgsetsize. + + The location of the arrow can be changed using + \sfgsetarrowloc. + +\sfgcurve{dx}{dy}{off}{pos}{text} draws a curved sfg path from (0,0) + to (dx,dy). The arrow's position is `off' units left of the + middle of the path (`off' can be negative to put the arrow + right of the path). The curve leaves the endpoints in an angle + of 60 degrees (this value can be changed using \sfgsetangle) + if possible. If the arrow is too far away from the straight + path, the angle is increased to guarantee a ``nice'' curve, + and a warning message is issued. + + +Drawing Nodes +~~~~~~~~~~~~~ +\sfgnode{pos}{text} draws a node with label `text'. `pos' decides + where the label is typeset. It is a number between 0 and 7. + After the command + + \sfgsetcompass + + eight macros named after compass directions can be used. + + + 3 2 1 \NW \N \NE + + 4 . 0 or \W . \E + + 5 6 7 \SW \S \SE + + The distance of the label from the node's centre as well as the + node's radius can be set using \sfgsetsize. + +\sfgtermnode{pos}{text} draws a terminal node (black circle filled white). + + +Example: +~~~~~~~~ +\documentclass[11pt,a4paper]{article} +\usepackage{pstricks,sfg} +\pagestyle{empty} +\setlength{\parindent}{0pt} + +\begin{document} +\sfgsetunit{0.5cm} +\sfgsetsize{0.12}{0.4}{0.5}{0.3} +\sfgsetcompass +\begin{picture}(27,4) + % branches related to node 2 + \put(6,2){\sfgbranch{3}{0}\S{$\frac{1}{R_1}$}} + \put(9,2){\sfgbranch{3}{0}\N{\boldmath $Z_2$}} + \put(18,2){\sfgcurve{-9}{0}{2}\S{$\frac{1}{R_2}$}} + \put(24,2){\sfgcurve{-15}{0}{-2}\N{$sC_1$}} + % branches related to node 3 + \put(12,2){\sfgbranch{3}{0}\N{$\frac{1}{R_2}$}} + \put(15,2){\sfgbranch{3}{0}\N{\boldmath $Z_3$}} + % input, voltage gain, output + \put(0,2){\sfgcurve{6}{0}{2}\N{$1$}} + \put(18,2){\sfgcurve{6}{0}{-2}\S{$\alpha_{\mathrm{V}}$}} + \put(24,2){\sfgbranch{3}{0}\S{$1$}} + % nodes + \put(0,2){\sfgtermnode\S{$V_{\mathrm{in}}$}} + \put(3,2){\sfgnode\S{$I_1$}} + \put(6,2){\sfgnode\S{$V_1$}} + \put(9,2){\sfgnode\S{$I_2$}} + \put(12,2){\sfgnode\S{$V_2$}} + \put(15,2){\sfgnode\S{$I_3$}} + \put(18,2){\sfgnode\S{$V_3$}} + \put(21,2){\sfgnode\S{$I_4$}} + \put(24,2){\sfgnode\S{$V_4$}} + \put(27,2){\sfgtermnode\S{$V_{\mathrm{out}}$}} +\end{picture} +\end{document} + + +References +~~~~~~~~~~ + [Chen, 1995, Chapters 7, 8 and 18] + Wai-Kai Chen. The Circuits and Filters Handbook. CRC Press, + Inc., 1995. + +or have a look at the original papers by Samuel Mason: + + [119] + Samuel J. Mason. Feedback theory --- some properties of signal + flow graphs. Proceedings of the Institute of Radio Engineers, + 41(9):1144-1156, September 1953. + [120] + Samuel J. Mason. Feedback theory --- further properties of + signal flow graphs. Proceedings of the Institute of Radio + Engineers, 44(7):920-926, July 1956. diff --git a/Master/tlpkg/tlpsrc/collection-science.tlpsrc b/Master/tlpkg/tlpsrc/collection-science.tlpsrc index 8a7dbb397a3..54507c0e2c0 100644 --- a/Master/tlpkg/tlpsrc/collection-science.tlpsrc +++ b/Master/tlpkg/tlpsrc/collection-science.tlpsrc @@ -38,6 +38,7 @@ depend Package/objectz depend Package/pseudocode depend Package/scientificpaper depend Package/sciposter +depend Package/sfg depend Package/struktex depend Package/t-angles depend Package/textopo diff --git a/Master/tlpkg/tlpsrc/sfg.tlpsrc b/Master/tlpkg/tlpsrc/sfg.tlpsrc new file mode 100644 index 00000000000..a7ac18cf164 --- /dev/null +++ b/Master/tlpkg/tlpsrc/sfg.tlpsrc @@ -0,0 +1,2 @@ +name sfg +category Package |