summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/latex/tikz-ext/tikzlibraryext.misc.code.tex
blob: a5a982020fd2f52dfe00b97df29aa4b8d5b036f4 (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
% Copyright 2022 by Qrrbrbirlbel
%
% This file may be distributed and/or modified
%
% 1. under the LaTeX Project Public License and/or
% 2. under the GNU Free Documentation License.
%
\usepgflibrary{ext.pgfkeys-plus}%

%% full arc
%% https://tex.stackexchange.com/a/144297/16595
%% The postfix operator R is added to PGFmath,
%% it allows the use of angular segments.
%% full arc = 10 makes it so that
%%   1R =  36°
%%   2R =  72°
%%   …
%%  10R = 360°
%% Calling the full arc key with an empty value 
%% makes 1R = 1°
\pgfset{full arc/.code=%
  \def\pgf@temp{#1}%
  \ifx\pgfutil@empty\pgf@temp
    \let\pgfmath@fullarc@factor\pgfutil@empty
  \else
    \pgfmathsetmacro\pgfmath@fullarc@factor{360/(#1)}%
  \fi,full arc=}
\pgfmathdeclareoperator{R}{full arc}{1}{postfix}{950}
\pgfmathdeclarefunction{full arc}{1}{%
  \begingroup
    \pgfmath@x=#1pt\relax
    \ifx\pgfmath@fullarc@factor\pgfutil@empty\else
      \pgfmath@x\pgfmath@fullarc@factor\pgfmath@x
    \fi
    \pgfmath@returnone\pgfmath@x
  \endgroup}

%% foreach
%% http://tex.stackexchange.com/a/126418/16595
%% instead of \foreach \var in {start, start + delta, ..., end}
%% this allows to use \foreach[use int={start to end step delta}] without(!) a list in {}
%% the values start, end and delta are evaluated by PGFmath at the start of the loop.
%% In addition to use int, there's also use float.
\newif\iftikzext@pgf@foreach@no@list
\pgfqkeys{/pgf/foreach}{
  use int/.code={%
    \tikzext@pgf@foreach@no@list@parse@to\pgfmathtruncatemacro#1\pgffor@stop
  },
  use float/.code={%
    \tikzext@pgf@foreach@no@list@parse@to\pgfmathsetmacro#1\pgffor@stop
  }
}

\def\tikzext@pgf@foreach@no@list@parse@to#1#2to#3\pgffor@stop{%
  \tikzext@pgf@foreach@no@listtrue
  #1\foreachStart{#2}%
  \pgfutil@in@{step}{#3}
  \ifpgfutil@in@
    \tikzext@pgf@foreach@no@list@parse@step{#1}#3\pgffor@stop
  \else
    \tikzext@pgf@foreach@no@list@parse@step{#1}#3step1\pgffor@stop
  \fi
  \edef\tikzext@pgf@foreach@no@list@list{\foreachStart,\foreachSecond,...,\foreachEnd}%
}
\def\tikzext@pgf@foreach@no@list@parse@step#1#2step#3\pgffor@stop{%
  #1\foreachEnd{#2}%
  #1\foreachSecond{\foreachStart+#3}%
}
\def\pgffor@vars{% manually extended, better etoolbox
  \pgfutil@ifnextchar i{\pgffor@@vars@end}{%
    \pgfutil@ifnextchar[{\pgffor@@vars@opt}{%]
      \pgfutil@ifnextchar/{\pgffor@@vars@slash@gobble}{%
         \iftikzext@pgf@foreach@no@list\expandafter\pgfutil@firstoftwo\else
           \expandafter\pgfutil@secondoftwo\fi
         {\tikzext@pgf@foreach@no@listfalse\pgffor@macro@list\tikzext@pgf@foreach@no@list@list}
         {\pgffor@@vars}}}}}%

%% PGFmath
%% strrepeat("x", 5) = "xxxxx"
\pgfmathdeclarefunction{strrepeat}{2}{%
  \begingroup\pgfmathint{#2}\pgfmath@count\pgfmathresult
    \let\pgfmathresult\pgfutil@empty
    \pgfutil@loop\ifnum\pgfmath@count>0\relax
      \expandafter\def\expandafter\pgfmathresult\expandafter{\pgfmathresult#1}%
      \advance\pgfmath@count-1\relax
    \pgfutil@repeat\pgfmath@smuggleone\pgfmathresult\endgroup}

%% isInString("foo", "foobar") = true (= 1)
%% isInString("boo", "foobar") = false (= 0)
\pgfmathdeclarefunction{isInString}{2}{%
  \pgfutil@in@{#1}{#2}%
  \ifpgfutil@in@\def\pgfmathresult{1}\else\def\pgfmathresult{0}\fi}

%% strcat("foo", "bar") = "foobar" (can have more than two parameters)
\pgfutil@IfUndefined{pgfmathstrcat@}{
  \pgfmathdeclarefunction{strcat}{...}{%
    \begingroup
      \let\pgfmathresult\pgfutil@empty
      \pgfmathstrcat@@#1\pgfmath@stop}
  \def\pgfmathstrcat@@#1{%
    \ifx\pgfmath@stop#1%
      \def\pgfmath@next{\pgfmath@smuggleone\pgfmathresult\endgroup}
    \else
      \expandafter\def\expandafter\pgfmathresult\expandafter{\pgfmathresult#1}%
      \let\pgfmath@next\pgfmathstrcat@@
    \fi
    \pgfmath@next}
}{}

% http://tex.stackexchange.com/questions/244569/bounding-lines-around-tax-nodes/244619#244619
\pgfmathdeclarefunction{atanXY}{2}{\pgfmathatantwo@{#2}{#1}}
\pgfmathdeclarefunction{atanYX}{2}{\pgfmathatantwo@{#1}{#2}}

%% http://tex.stackexchange.com/a/132939/16595
\tikzset{
  @edges through/.code={{{% three braces to protect \pgfeov
    \pgfutil@ifnextchar[{\pgfkeysvalueof{/tikz/@@edges through/.@cmd}}
                        {\pgfkeysvalueof{/tikz/@@edges through/.@cmd}[]}#1\pgfeov}}},
  @@edges through/.style args={[#1]#2}{/tikz/insert path={edge[#1] (#2) (#2)}},
  edges through/.style={/tikz/@edges through/.list={#1}}}
\tikzset{
  @edges to/.code={{{% three braces to protect \pgfeov
    \pgfutil@ifnextchar[{\pgfkeysvalueof{/tikz/@@edges to/.@cmd}}
                        {\pgfkeysvalueof{/tikz/@@edges to/.@cmd}[]}#1\pgfeov}}},
  @@edges to/.style args={[#1]#2}{/tikz/insert path={edge[#1] (#2)}},
  edges to/.style={/tikz/@edges to/.list={#1}}}
\tikzset{
  @tos to/.code={{{% three braces to protect \pgfeov
    \pgfutil@ifnextchar[{\pgfkeysvalueof{/tikz/@@tos to/.@cmd}}
                        {\pgfkeysvalueof{/tikz/@@tos to/.@cmd}[]}#1\pgfeov}}},
  @@tos to/.style args={[#1]#2}{/tikz/insert path={to[#1] (#2)}},
  tos to/.style={/tikz/@tos to/.list={#1}}}


\pgfmathdeclarefunction{distancebetween}{2}{% only coordinates/nodes
  \begingroup
    \pgfpointdiff{\pgfpointanchor{#1}{center}}{\pgfpointanchor{#2}{center}}%
    \edef\pgfmath@temp{{\pgf@sys@tonumber\pgf@x}{\pgf@sys@tonumber\pgf@y}}%
    \expandafter\pgfmathveclen@\pgfmath@temp
    \pgfmath@smuggleone\pgfmathresult
  \endgroup}
\pgfmathdeclarefunction{qdistancebetween}{1}{% only coordinates/nodes
  \begingroup
    \pgfpointdiff{\pgfpointorigin}{\pgfpointanchor{#1}{center}}%
    \edef\pgfmath@temp{{\pgf@sys@tonumber\pgf@x}{\pgf@sys@tonumber\pgf@y}}%
    \expandafter\pgfmathveclen@\pgfmath@temp
    \pgfmath@smuggleone\pgfmathresult
  \endgroup}

\pgfmathdeclarefunction{qanglebetween}{1}{%
  \pgfmathanglebetweenpoints{\pgfpointorigin}{\pgfpointanchor{#1}{center}}}

\pgfmathdeclarefunction{anglebetween}{2}{%
  \pgfmathanglebetweenpoints{\pgfpointanchor{#1}{center}}{\pgfpointanchor{#2}{center}}}

\pgfmathdeclarefunction{isEmpty}{1}{%
  \begingroup
    \def\pgfmath@temp{#1}%
    \pgfutil@ifxempty\pgfmath@temp{\def\pgfmathresult{1}}{\def\pgfmathresult{0}}%                           
    \pgfmath@smuggleone\pgfmathresult
  \endgroup}

\pgfset{
  declare constant/.code={%
    \let\pgfmathdeclareconstant@@@\pgfutil@empty
    \pgfkeysvalueof{/pgf/declare function/execute at begin function}%
    \pgfmathdeclareconstant@#1@=@;\pgf@stop
    \pgfkeysvalueof{/pgf/declare function/execute at end function}%
    \pgfmathdeclareconstant@@@
  }}
\def\pgfmathdeclareconstant@{%
  \pgfutil@ifnextchar x\pgfmathdeclareconstant@@\pgfmathdeclareconstant@@
}
\def\pgfmathdeclareconstant@@#1=#2;#3\pgf@stop{%
  \edef\pgfmath@local@temp{#1}%
  \pgfutil@ifx\pgfmath@local@temp\pgfmath@local@at{}{%
    \pgfutil@g@addto@macro\pgfmathdeclareconstant@@@{\pgfmathdeclarepseudoconstant{#1}{\def\pgfmathresult{#2}}}%
    \pgfmathdeclareconstant@#3\pgf@stop
  }%
}