summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/generic/pst-jftree/pst-jftree.tex
blob: d2d601dc089372d559d8eb4327c9d8e0994619da (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
% 10 January 2004, John Frampton (frampton@neu.edu)
% Users should feel free to modify this file in any way they
% see fit.  If these modification go beyond your personal
% use, please send me a careful description of the
% modifications that have been made and the reasons that
% they were made.
% 13 Jan, 2004 - error message if no root node defined in \jftree

\csname JFTreeLoaded\endcsname
\let\JFTreeLoaded\endinput
\ifx\PSTricksLoaded\endinput \else \input pstricks \fi\relax
\ifx\PSTnodesLoaded\endinput \else \input pst-node \fi\relax
\edef\TheAtCode{\the\catcode`\@}
\catcode`\@=11
%%%%%%%%%%%%%%%%%%%%%%%
%% register resources
\newtoks\jfteverynode
\newdimen\jft@xpos
\newdimen\jft@ypos
\newdimen\m@xl
\newdimen\m@xr
\newdimen\m@xb
\newbox\jft@treebox
%%%%%%%%%%%%%%%%%%%%%%%
%% new PSTricks parameters
\def\psset@nodetopgap#1{\pssetlength\pst@dima{#1}%
   \edef\n@detopgap{\the\pst@dima}}
\def\psset@nodebotgap#1{\pssetlength\pst@dima{#1}%
   \edef\n@debotgap{\the\pst@dima}}
\def\psset@everynode#1{\jfteverynode={#1}}
\def\psset@triratio#1{\edef\jft@triratio{#1}}
\def\psset@scaleby#1{\edef\jft@scaleby{#1}}
%%%%%%%%%%%%%%%%%%%%%%%

\def\jftpsset#1{\ifx#1\relax\relax
   \else \psset{#1}\fi \ignorespaces}
\def\jftpsset#1{\edef\temp{#1}\ifx\temp\@empty
   \else \expandafter\psset\expandafter{\temp}\fi \ignorespaces}

%
\def\jft@getpars#1{\def\k@@p{#1}\futurelet\temp\jft@getparsA}
\def\jft@getparsA{\ifx\temp[\let\next\jft@getparsB
   \else \def\jft@pars{}\let\next=\k@@p \fi\next}
\def\jft@getparsB[#1]{\def\jft@pars{#1}\k@@p}
%\jft@getparsC}
%\def\jft@getparsC{\futurelet\temp\jft@getparsD}
%\def\jft@getparsD{\k@@p}

% define a branch
\def\defbranch{\jft@getpars\d@fbranch}
\def\d@fbranch#1#2(#3)#4(#5){%
   \edef#1{\noexpand\bgroup
      \edef\noexpand\@hleg{#5}%
      \edef\noexpand\@vleg{#3}%
      \edef\noexpand\m@kelevelpars{\jft@pars}%
      \noexpand\jft@getpars\noexpand\dr@wbranch}}
\def\dr@wbranch{\jftpsset{\m@kelevelpars}
   {\jftpsset{\jft@pars}
   \pssetxlength\pst@dima{\@vleg}
   \pst@dima=-\jft@scaleby\pst@dima
   \@scalebyslope\pst@dima{\@hleg}\pst@dima
   \edef\@hleg{\the\pst@dima}%
   \pssetylength\pst@dima{\@vleg}
   \pst@dima=\jft@scaleby\pst@dima
   \edef\@vleg{\the\pst@dima}%
   \pst@dima=\jft@xpos \pst@dimb=\jft@ypos
   \advance\jft@xpos by \@hleg
   \advance\jft@ypos by -\@vleg
   \psline(\pst@dima,\pst@dimb)(\jft@xpos,\jft@ypos)
   \xdef\temp{\noexpand\jft@xpos=\the\jft@xpos
      \noexpand\jft@ypos=\the\jft@ypos}%
   \aftergroup\temp}%
   \ev@ltarget}
%
\def\ev@ltarget{\futurelet\temp\ev@ltargetA}
\def\ev@ltargetA{\ifx\temp\bgroup\let\next\ev@ltargetB \else
   \let\next\ev@ltargetC \fi \next}
\def\ev@ltargetB#1{\setbox0=\hbox{{\jft@testnode #1}}%
   \d@@fnode \setn@de \egroup\ignorespaces}
\def\ev@ltargetC#1{#1\egroup\ignorespaces}

% use \@scalebyslope\pst@dima{3/4}\pst@dimb
%   \pst@dima is the height to be scaled,
%   the result is put in \pst@dimb
\def\@scalebyslope#1#2#3{#3=#1\expandafter
   \@@scalebyslope\expandafter#3#2//}
\def\@@scalebyslope#1#2/#3/{\pst@divide{#1}{#2pt}\temp
   #1=\temp pt \def\temp{#3}%
   \ifx\temp\@empty \let\next=\relax
      \else \multiply#1 by #3 \let\next=\@gobble\fi \next}

\def\deftriangle{\jft@getpars\d@ftriangle}
\def\d@ftriangle#1#2(#3)#4(#5)#6(#7){%
   \edef#1{\noexpand\bgroup
      \edef\noexpand\@leftleg{#5}%
      \edef\noexpand\@rightleg{#7}%
      \edef\noexpand\@upleg{#3}%
      \edef\noexpand\m@kelevelpars{\jft@pars}%
      \noexpand\jft@getpars\noexpand\dr@wtriangle}}
\def\dr@wtriangle{\jftpsset{\m@kelevelpars}
   {\jftpsset{\jft@pars}
   \pssetxlength\pst@dima{\@upleg}
   \pst@dima=\jft@scaleby\pst@dima
   \pst@dimb=-\pst@dima
   \@scalebyslope\pst@dima{\@leftleg}\pst@dima
   \@scalebyslope\pst@dimb{\@rightleg}\pst@dimb
   \edef\@leftleg{\the\pst@dima}%
   \edef\@rightleg{\the\pst@dimb}%
   \pssetylength\pst@dima{\@upleg}
   \pst@dima=\jft@scaleby\pst@dima
   \edef\@upleg{\the\pst@dima}%
   \pst@dima=\jft@xpos \pst@dimb=\jft@ypos  % save old
   \pst@dimc=\jft@xpos \advance\pst@dimc by \@rightleg % right edge
   \advance\jft@xpos by -\@leftleg   % left edge
   \advance\jft@ypos by -\@upleg     % new bottom edge
   \pspolygon(\jft@xpos,\jft@ypos)(\pst@dimc,\jft@ypos)(\pst@dima,\pst@dimb)
   \ifdim\pst@dimc>\m@xr \global\m@xr=\pst@dimc \fi
   \ifdim\jft@xpos<\m@xl \global\m@xl=\jft@xpos \fi
   \pst@dimc=\@leftleg \advance\pst@dimc by \@rightleg
   \xdef\jfttriwd{\the\pst@dimc}%
   \advance\jft@xpos by \jft@triratio\pst@dimc
   \xdef\temp{\noexpand\jft@xpos=\the\jft@xpos
      \noexpand\jft@ypos=\the\jft@ypos
      \noexpand\def\noexpand\jfttriwd{\the\pst@dimc}}%
   \aftergroup\temp}%
   \ev@ltarget}
\def\triline#1{\hbox to\jfttriwd{#1}}

% define a variable width triangle
\def\defvartriangle{\jft@getpars\d@fvartriangle}
\def\d@fvartriangle#1#2(#3){%
   \edef#1{\noexpand\bgroup
      \edef\noexpand\@upleg{#3}%
      \edef\noexpand\m@kelevelpars{\jft@pars}%
      \noexpand\jft@getpars\noexpand\dr@wvartriangle}}
\def\dr@wvartriangle#1{\jftpsset{\m@kelevelpars}
   \jftpsset{\jft@pars}
   \setbox0=\hbox{{\jft@testnode #1}}%
   \pst@dima=\jft@xpos \pst@dimb=\jft@ypos  % save old
   \advance\jft@xpos by -\jft@triratio\wd0
   \pst@dimc=\jft@xpos
   \advance\pst@dimc by \wd0
   \pssetylength\pst@dimd{\@upleg}
   \pst@dimd=\jft@scaleby\pst@dimd
   \advance\jft@ypos by -\pst@dimd
   \pspolygon(\jft@xpos,\jft@ypos)(\pst@dimc,\jft@ypos)(\pst@dima,\pst@dimb)
   \ifdim\pst@dimc>\m@xr \global\m@xr=\pst@dimc \fi
   \ifdim\jft@xpos<\m@xl \global\m@xl=\jft@xpos \fi
   \advance\jft@xpos by .5\wd0
   \d@@fnode \setn@de \egroup}

% disposition of the {stuff} associated with a node
\def\d@fnode#1#2#3\cr{%
   \if@rootnode \def\@startnode{#1}\@rootnodefalse\fi
   \def#1{%
   \setbox0=\hbox{{\jft@testnode #2}}%
   \d@@fnode
   \def\temp{#1}\ifx\temp\@startnode
      \xdef\adj@stht{-\the\jft@ypos}\fi
   \setn@de #3}}
\def\d@@fnode{%
   \ifn@degaps \else  \pssetylength\pst@dimg{\n@detopgap}
      \advance\jft@ypos by -\pst@dimg \fi
   {\advance\jft@xpos by-.5\wd0
      \ifdim\jft@xpos<\m@xl \global\m@xl=\jft@xpos \fi
    \advance\jft@xpos by\wd0
      \ifdim\jft@xpos>\m@xr \global\m@xr=\jft@xpos \fi}%
   \advance\jft@ypos by -\ht0}
\def\setn@de{%
   \pst@dima=-\dp0
   \rput[B](\jft@xpos,\jft@ypos){\copy0}
   \advance\jft@ypos by\pst@dima
   \ifdim\jft@ypos<\m@xb \global\m@xb=\jft@ypos \fi
   \ifn@degaps \else \pssetlength\pst@dimg{\n@debotgap}
      \advance\jft@ypos by -\pst@dimg \fi \ignorespaces}

% look for \omit and take appropriate action
\newif\ifn@degaps
\def\jft@testnode{\futurelet\temp\jft@testn@de}
\def\jft@testn@de{\ifx\temp\omit
      \global\n@degapstrue \let\next=\@gobble
   \else \global\n@degapsfalse
      \edef\next{\the\jfteverynode}\fi \next}

\newif\if@rootnode
\def\jftree{\jft@getpars\jft@tree}
\def\jft@tree{\setbox\jft@treebox=\hbox\bgroup \let\!=\d@fnode
   \let\@startnode=\@empty
   \jftpsset{\jft@pars}
   \jft@xpos=0pt \jft@ypos=0pt \m@xl=0pt \m@xr=0pt \m@xb=0pt
   \@rootnodetrue
   \ignorespaces}
\def\endjftree{\ifx\@startnode\@empty
   \errmessage{JFTree Error: Root node definition is missing}\fi
   \@startnode\egroup
   \dp\jft@treebox=-\m@xb
   \leavevmode\kern-\m@xl\raise\adj@stht\box\jft@treebox\kern\m@xr}

\let\defnode=\d@fnode

%% set defaults
\newpsstyle{jftreedefault}{arrows=c-c,linewidth=.6pt,scaleby=1,
   nodetopgap=3pt,nodebotgap=3pt,triratio=.5,everynode=\strut}
\psset{style=jftreedefault}
%% provide a minimal complement of branches and triangles
\defbranch\medleft(1)(1)
\defbranch\medright(1)(-1)
\defbranch\medvert(1)(1/0)
\deftriangle\medtri(1)(1)(-1)
\defvartriangle\medvar(1)

\catcode`\@=\TheAtCode\relax
\endinput