summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/source/latex/mfpic4ode
diff options
context:
space:
mode:
authorKarl Berry <karl@freefriends.org>2009-04-16 16:08:57 +0000
committerKarl Berry <karl@freefriends.org>2009-04-16 16:08:57 +0000
commit7ebb7368fa53009acc87aaa8211fabee5608265b (patch)
tree8ef6db137044f49845a1f5106a8c4d03be72e6ad /Master/texmf-dist/source/latex/mfpic4ode
parent40c2ba944e1cee0677734608263cbc7ba3a729bf (diff)
mfpic4ode update (15apr09)
git-svn-id: svn://tug.org/texlive/trunk@12734 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/source/latex/mfpic4ode')
-rw-r--r--Master/texmf-dist/source/latex/mfpic4ode/mfpic4ode.dtx180
1 files changed, 99 insertions, 81 deletions
diff --git a/Master/texmf-dist/source/latex/mfpic4ode/mfpic4ode.dtx b/Master/texmf-dist/source/latex/mfpic4ode/mfpic4ode.dtx
index 0f712022f44..82b78640c93 100644
--- a/Master/texmf-dist/source/latex/mfpic4ode/mfpic4ode.dtx
+++ b/Master/texmf-dist/source/latex/mfpic4ode/mfpic4ode.dtx
@@ -22,7 +22,7 @@
%<sty>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
%<sty>\ProvidesPackage{mfpic4ode}
%<*sty>
- [2008/01/03 v0.2 mfpic4ode.dtx file]
+ [2009/04/15 v0.3 mfpic4ode.dtx file]
%</sty>
%
%<*driver>
@@ -38,7 +38,7 @@
%</driver>
% \fi
%
-% \CheckSum{175}
+% \CheckSum{185}
%
% \CharacterTable
% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
@@ -58,13 +58,14 @@
%
%
% \changes{v0.2}{2008/01/03}{First public version}
+% \changes{v0.3}{2009/04/15}{Added connect environment to paths}
%
% \GetFileInfo{mfpic4ode.dtx}
%
% \DoNotIndex{\newcommand,\newenvironment}
%
-% \def\fileversion{0.2}
-% \def\filedate{2008/01/03}
+% \def\fileversion{0.3}
+% \def\filedate{2009/04/15}
%
% \title{The \textsf{mfpic4ode} package\thanks{This document
% corresponds to \textsf{mfpic4ode}~\fileversion, dated \filedate.}}
@@ -164,13 +165,15 @@
% \end{verbatim}
% The integral curve is drawn from short linear parts using |\ODEline|
% command which expands to |\lines| command from |mfpic| package by
-% default. A simple test is used to keep the arithmetics in reasonable
-% bounds: if after the step the curve leaves the horizontal strip
-% between |yneg| and |ypos| variables, then the evaluation is stopped
-% (in fact, in this case we do not change the independent variable and
-% we do the remaining steps with the same last point). Recall that
-% |yneg| and |ypos| variables are set when you call |mfpicture|
-% environment. If you call the environment as follows
+% default. These linear parts are connected in connect environment and
+% this allows to use prefixes like |\dotted| or |\dashed| to the
+% trajectories. A simple test is used to keep the arithmetics in
+% reasonable bounds: if after the step the curve leaves the horizontal
+% strip between |yneg| and |ypos| variables, then the evaluation is
+% stopped (in fact, in this case we do not change the independent
+% variable and we do the remaining steps with the same last point).
+% Recall that |yneg| and |ypos| variables are set when you call
+% |mfpicture| environment. If you call the environment as follows
% \begin{verbatim}
% \begin{mfpic}[5][3]{-0.1}{1.5}{-0.1}{0.5}
% ...........
@@ -247,51 +250,60 @@
%%% ODEstep and the number of steps is ODEstepcount. The points are
%%% stored in metapost variables x1,y1.
\def\trajectory#1#2{
- \mfsrc{x1:=#1;y1:=#2;
- for i=1 upto ODEstepcount:
- x2:=x1+ODEstep;
- y2:=y1+ODEstep*ODErhs(x1,y1);}
- \ODEline{z1}{z2}
- \mfsrc{
- if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
- endfor
- }}
+ \begin{connect}
+ \mfsrc{x1:=#1;y1:=#2;
+ for i=1 upto ODEstepcount:
+ x2:=x1+ODEstep;
+ y2:=y1+ODEstep*ODErhs(x1,y1);}
+ \ODEline{z1}{z2}
+ \mfsrc{
+ if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
+ endfor
+ }
+ \end{connect}
+}
%%% Integral curve using Runge--Kutta method.
\def\trajectoryRK#1#2{
- \mfsrc{x1:=#1;y1:=#2;
- for i=1 upto ODEstepcount:
- k1:=ODErhs(x1,y1);
- x3:=x1+(ODEstep/2);
- y3:=y1+k1*(ODEstep/2);
- k2:=ODErhs(x3,y3);
- x2:=x1+ODEstep;
- y2:=y1+ODEstep*k2;}
- \ODEline{z1}{z2}
- \mfsrc{
- if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
- endfor
- }}
+ \begin{connect}
+ \mfsrc{x1:=#1;y1:=#2;
+ for i=1 upto ODEstepcount:
+ k1:=ODErhs(x1,y1);
+ x3:=x1+(ODEstep/2);
+ y3:=y1+k1*(ODEstep/2);
+ k2:=ODErhs(x3,y3);
+ x2:=x1+ODEstep;
+ y2:=y1+ODEstep*k2;}
+ \ODEline{z1}{z2}
+ \mfsrc{
+ if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
+ endfor
+ }
+ \end{connect}
+}
%%% Integral curve using fourth order Runge--Kutta method.
\def\trajectoryRKF#1#2{
- \mfsrc{x1:=#1;y1:=#2;
- for i=1 upto ODEstepcount:
- k1:=ODErhs(x1,y1);
- x3:=x1+(ODEstep/2);
- y3:=y1+k1*(ODEstep/2);
- k2:=ODErhs(x3,y3);
- y4:=y1+k2*(ODEstep/2);
- k3:=ODErhs(x3,y4);
- y5:=y1+k3*(ODEstep/2);
- k4:=ODErhs(x3,y5);
- kk:=(k1+2*k2+2*k3+k4)/6;
- x2:=x1+ODEstep;
- y2:=y1+ODEstep*kk;}
- \ODEline{z1}{z2}
- \mfsrc{
- if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
- endfor
- }}
+ \begin{connect}
+ \mfsrc{x1:=#1;y1:=#2;
+ for i=1 upto ODEstepcount:
+ k1:=ODErhs(x1,y1);
+ x3:=x1+(ODEstep/2);
+ y3:=y1+k1*(ODEstep/2);
+ k2:=ODErhs(x3,y3);
+ y4:=y1+k2*(ODEstep/2);
+ k3:=ODErhs(x3,y4);
+ y5:=y1+k3*(ODEstep/2);
+ k4:=ODErhs(x3,y5);
+ kk:=(k1+2*k2+2*k3+k4)/6;
+ x2:=x1+ODEstep;
+ y2:=y1+ODEstep*kk;}
+ \ODEline{z1}{z2}
+ \mfsrc{
+ if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
+ endfor
+ }
+ \end{connect}
+}
\def\ODEarrow#1#2{
\mfsrc{x1:=#1; y1:=#2;
x3:=x1+(ODEarrowlength)/((xscale)++(ODErhs(#1,#2)*yscale));
@@ -344,15 +356,18 @@
\def\ASdefineequations#1#2{\fdef{ASf}{x,y}{#1}\fdef{ASg}{x,y}{#2}}
\def\AStrajectory#1#2{
- \mfsrc{x1:=#1;y1:=#2;
- for i=1 upto ODEstepcount:
- x2:=x1+ODEstep*ASf(x1,y1);
- y2:=y1+ODEstep*ASg(x1,y1);}
- \ODEline{z1}{z2}
- \mfsrc{
- if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
- endfor
- }}
+ \begin{connect}
+ \mfsrc{x1:=#1;y1:=#2;
+ for i=1 upto ODEstepcount:
+ x2:=x1+ODEstep*ASf(x1,y1);
+ y2:=y1+ODEstep*ASg(x1,y1);}
+ \ODEline{z1}{z2}
+ \mfsrc{
+ if ((y2>yneg) and (y2<ypos)): x1:=x2; y1:=y2 fi;
+ endfor
+ }
+ \end{connect}
+}
\def\ASarrow#1#2{
\mfsrc{x1:=#1; y1:=#2;
x3:=x1+(ODEarrowlength*ASf(#1,#2))/((ASf(#1,#2)*xscale)++(ASg(#1,#2)*yscale ));
@@ -373,27 +388,30 @@
\else
\AStrajectoryRKF{#1}{#2}\relax\let\next\AS@cycle@IC\fi\next}
\def\AStrajectoryRKF#1#2{
- \mfsrc{x1:=#1;y1:=#2;
- TIMEsteps:=abs(TIMEend/TIMEstep);
- TIME:=0;
- for i=1 upto TIMEsteps:
- k1:=ASf(x1,y1);
- l1:=ASg(x1,y1);
- k2:=ASf(x1+(TIMEstep*k1/2),y1+(TIMEstep*l1/2));
- l2:=ASg(x1+(TIMEstep*k1/2),y1+(TIMEstep*l1/2));
- k3:=ASf(x1+(TIMEstep*k2/2),y1+(TIMEstep*l2/2));
- l3:=ASg(x1+(TIMEstep*k2/2),y1+(TIMEstep*l2/2));
- k4:=ASf(x1+(TIMEstep*k3),y1+(TIMEstep*l3));
- l4:=ASg(x1+(TIMEstep*k3),y1+(TIMEstep*l3));
- k5:=((k1)/6)+((k2)/3)+((k3)/3)+((k4)/6);
- l5:=(l1/6)+(l2/3)+(l3/3)+(l4/6);
- x2:=x1+(TIMEstep*k5);
- y2:=y1+(TIMEstep*l5);}
- \ODEline{z1}{z2}
- \mfsrc{
- if ((y2>yneg) and (y2<ypos) and (x2<xpos) and (x2>xneg)): x1:=x2; y1:=y2 fi;
- endfor
- }}
+ \begin{connect}
+ \mfsrc{x1:=#1;y1:=#2;
+ TIMEsteps:=abs(TIMEend/TIMEstep);
+ TIME:=0;
+ for i=1 upto TIMEsteps:
+ k1:=ASf(x1,y1);
+ l1:=ASg(x1,y1);
+ k2:=ASf(x1+(TIMEstep*k1/2),y1+(TIMEstep*l1/2));
+ l2:=ASg(x1+(TIMEstep*k1/2),y1+(TIMEstep*l1/2));
+ k3:=ASf(x1+(TIMEstep*k2/2),y1+(TIMEstep*l2/2));
+ l3:=ASg(x1+(TIMEstep*k2/2),y1+(TIMEstep*l2/2));
+ k4:=ASf(x1+(TIMEstep*k3),y1+(TIMEstep*l3));
+ l4:=ASg(x1+(TIMEstep*k3),y1+(TIMEstep*l3));
+ k5:=((k1)/6)+((k2)/3)+((k3)/3)+((k4)/6);
+ l5:=(l1/6)+(l2/3)+(l3/3)+(l4/6);
+ x2:=x1+(TIMEstep*k5);
+ y2:=y1+(TIMEstep*l5);}
+ \ODEline{z1}{z2}
+ \mfsrc{
+ if ((y2>yneg) and (y2<ypos) and (x2<xpos) and (x2>xneg)): x1:=x2; y1:=y2 fi;
+ endfor
+ }
+ \end{connect}
+}
\catcode`\@12\relax
%</tex>