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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
%D \module
%D [ file=meta-txt,
%D version=2000.07.06,
%D title=\METAPOST\ Graphics,
%D subtitle=Text Tricks,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D In this library some handy text manipulations are
%D defined. Some can and will be improved as soon as the
%D \TEX||\METAPOST\ interface is stable. Some of the
%D solutions may look weird, which is entirely my fault,
%D since I implemented them in the process of getting grip
%D on this kind of manipulations. Undoubtly better
%D \METAPOST\ code is possible, but my way of learning
%D this kind of trickery happens to be by \quote {trial
%D and error} and \quote {look and feel} (as well as
%D identifying tricks in Hobby's code).
% textext ipv btex ... etex
\unprotect
\startMPextensions
if unknown context_text: input mp-text; fi;
\stopMPextensions
%%%%%%%
% \def\newchar#1{\chardef#1=0 }
\newdimen\parwidth
\newdimen\parheight
\newdimen\parvoffset
\newdimen\parhoffset
\newcount\parlines
\newtoks \partoks
\newbox \shapetextbox
\newif \ifparseries
\chardef \parfirst=0
\def\startshapetext[#1]%
{\global\newcounter\currentshapetext
\global\setbox\shapetextbox=\vbox\bgroup
\expanded{\switchtobodyfont[\@@shbodyfont]}%
\dontcomplain
\hsize\parwidth
\setuptolerance[\v!verytolerant,\v!stretch]%
\!!counta=0
\!!toksa=\emptytoks
\def\docommand##1%
{\setbox\scratchbox=\hbox{\useMPgraphic{##1}}%
\global\chardef\parfirst=0
\getMPdata % \readlocfile{\MPdatafile}{}{}%
\setshapecharacteristics
\advance\!!counta by \parlines
\expandafter\appendtoks\the\partoks\to\!!toksa}%
\processcommalist[#1]\docommand
\global\parseriestrue
\xdef\totalparlines{\the\!!counta}%
\global\partoks\!!toksa
%\ifx\partoks\emptytoks\else % safeguard
\expanded{\parshape \the\!!counta \the\!!toksa}%
%\fi
\setshapecharacteristics % extra dummy
\ifparseries\def\par{\endgraf\adaptparshape}\fi
\EveryPar{\begstrut}}
\def\stopshapetext%
{\endstrut
%\removebottomthings
\egroup
\global\newcounter\currentshapetext
\getshapecharacteristics}
\def\adaptparshape%
{\def\docommand##1%
{\ifcase\!!counta
\expandafter\appendtoks\space##1 \to\!!toksa
\else
\advance\!!counta \minusone
\fi}%
\!!counta\prevgraf
\doglobal\decrement(\totalparlines,\!!counta)%
\multiply\!!counta \plustwo
\!!toksa\emptytoks
\expanded{\processseparatedlist[\the\partoks][\space]}\docommand
\global\partoks\!!toksa
%\ifx\partoks\emptytoks\else % safeguard
\expanded{\parshape\totalparlines\the\partoks}%
}%\fi}
\def\getshapecharacteristics%
{\doglobal\increment\currentshapetext
\doifdefinedelse{parlines:\currentshapetext}
{\global\parlines \getvalue{parlines:\currentshapetext}%
\global\chardef\parfirst \getvalue{parfirst:\currentshapetext}%
\global\parvoffset \getvalue{parvoffset:\currentshapetext}%
\global\parhoffset \getvalue{parhoffset:\currentshapetext}%
\global\parwidth \getvalue{parwidth:\currentshapetext}%
\global\parheight \getvalue{parheight:\currentshapetext}}
{\global\parlines 1
\global\chardef\parfirst 0
\global\parvoffset \zeropoint
\global\parhoffset \zeropoint
\global\parwidth \hsize
\global\parheight \vsize}}
\def\setshapecharacteristics%
{\doglobal\increment\currentshapetext
\setxvalue{parlines:\currentshapetext }{\the\parlines}%
\setxvalue{parfirst:\currentshapetext }{\the\parfirst}%
\setxvalue{parvoffset:\currentshapetext}{\the\parvoffset}%
\setxvalue{parhoffset:\currentshapetext}{\the\parhoffset}%
\setxvalue{parwidth:\currentshapetext }{\the\parwidth}%
\setxvalue{parheight:\currentshapetext }{\the\parheight}}
\def\getshapetext% option: unvbox
{\vbox\bgroup
\forgetall
\setbox\scratchbox\vbox to \parheight
{\expanded{\switchtobodyfont[\@@shbodyfont]}% evt strutheight en
\splittopskip\strutheight % lineheight opslaan
\vskip\parvoffset % scheelt switch en
\ifcase\parfirst\or\vskip\lineheight\fi % is ook veiliger
\hskip\parhoffset
\hbox{\vsplit\shapetextbox to \parlines\lineheight}}%
\wd\scratchbox\parwidth
\ht\scratchbox\parheight
\dp\scratchbox\zeropoint
\box\scratchbox
\getshapecharacteristics
\egroup}
\def\setupshapetexts%
{\dodoubleempty\getparameters[\??sh]}
\setupshapetexts%
[\c!bodyfont=]
%%%%%%% rotfont nog definieren
\doifundefined{RotFont}{\definefont[RotFont][RegularBold]}
\def\processfollowingtoken#1% strut toegevoegd
{\appendtoks#1\to\MPtoks
\setbox\MPbox=\hbox{\RotFont\setstrut\strut\the\MPtoks}%
\startMPdrawing
n := n + 1 ; len[n] := \the\wd\MPbox ;
\stopMPdrawing
\startMPdrawing[-]
% pic[n] := textext{\RotFont\setstrut\strut#1} ; % btex \RotFont\setstrut\strut#1 etex ;
pic[n] := btex \RotFont\setstrut\strut#1 etex ;
\stopMPdrawing}
\startuseMPgraphic{followtokens}
% we default to nothing
\stopuseMPgraphic
\def\followtokens#1%
{\vbox\bgroup
\forgetall
\dontcomplain
\startMPenvironment
\doifundefined{RotFont}{\definefont[RotFont][RegularBold]}
\stopMPenvironment
\MPtoks\emptytoks
\resetMPdrawing
\startMPdrawing
\includeMPgraphic{followtokens}
picture pic[] ; numeric len[], n ; n := 0 ;
\stopMPdrawing
\handletokens#1\with\processfollowingtoken
\startMPdrawing
if unknown RotPath : path RotPath ; RotPath := origin ; fi ;
if unknown RotColor : color RotColor ; RotColor := black ; fi ;
if unknown TraceRot : boolean TraceRot ; TraceRot := false ; fi ;
if unknown ExtraRot : numeric ExtraRot ; ExtraRot := 0 ; fi ;
numeric al, at, pl, wid, pos ; pair ap, ad ;
al := arclength RotPath ;
if al=0 :
al := len[n] + ExtraRot ;
RotPath := origin -- (al,0) ;
fi ;
if al<len[n]:
RotPath := RotPath scaled ((len[n]+ExtraRot)/al) ;
al := arclength RotPath ;
fi ;
pl := (al-len[n])/(if n>1 : (n-1) else : 1 fi) ;
if TraceRot :
draw RotPath withpen pencircle scaled 1pt withcolor blue ;
fi ;
for i=1 upto n :
wid := abs(xpart lrcorner pic[i] - xpart llcorner pic[i]) ;
pos := len[i]-wid/2 + (i-1)*pl ;
at := arctime pos of RotPath ;
ap := point at of RotPath ;
ad := direction at of RotPath ;
draw pic[i] shifted (-wid/2,0) rotated(angle(ad)) shifted ap
withcolor RotColor ;
if TraceRot :
draw boundingbox
pic[i] shifted (-wid/2,0) rotated(angle(ad)) shifted ap
withpen pencircle scaled .25pt withcolor red ;
draw ap
withpen pencircle scaled .50pt withcolor green ;
fi ;
endfor ;
\stopMPdrawing
\MPdrawingdonetrue
\getMPdrawing
\resetMPdrawing
\egroup}
% \followtokens
% {This is just a dummy text, kerned by T{\kern
% -.1667em\lower .5ex\hbox {E}}{\kern -.125emX} and typeset
% in a circle using {\setMFPfont M}{\setMFPfont
% E}{\setMFPfont T}{\setMFPfont A}{\setMFPfont
% P}{\setMFPfont O}{\setMFPfont S}{\setMFPfont T}.\quad}
\startuseMPgraphic{fuzzycount}
begingroup
save height, span, drift, d, cp ;
height := 3/ 5 * \baselinedistance ;
span := 1/ 3 * height ;
drift := 1/10 * height ;
pickup pencircle scaled (1/12 * height) ;
def d = (uniformdeviate drift) enddef ;
for i := 1 upto \MPvar{n} :
draw
if (i mod 5)=0 : ((-d-4.5span,d)--(+d-0.5span,height-d))
else : ((-d,+d)--(+d,height-d)) fi
shifted (span*i,d-drift) ;
endfor;
picture cp ; cp := currentpicture ; % for readability
setbounds currentpicture to
(llcorner cp shifted (0,-ypart llcorner cp) --
lrcorner cp shifted (0,-ypart lrcorner cp) --
urcorner cp -- ulcorner cp -- cycle) ;
endgroup ;
\stopuseMPgraphic
\setupMPvariables
[fuzzycount]
[n=10]
\def\fuzzycount#1%
{{\tx\useMPgraphic{fuzzycount}{n=#1}}}
\defineconversion[fuzzy][\fuzzycount]
%%%%%%%
\setupMPvariables
[EnglishRule]
[height=1ex,
width=\the\localhsize, % without \the, problems in non e-tex
color=darkgray]
\defineblank
[EnglishRule]
[medium]
\startuniqueMPgraphic{EnglishRule}{height,width,color}
height = \MPvar{height} ;
x1 = 0 ; x3 = \MPvar{width} ; x2 = x4 = .5x3 ;
y1 = y3 = 0 ; y2 = -y4 = height/2 ;
fill z1..z2..z3 & z3..z4..z1 & cycle withcolor \MPvar{color} ;
\stopuniqueMPgraphic
\def\EnglishRule%
{\startlinecorrection[EnglishRule]
\setlocalhsize \noindent \reuseMPgraphic{EnglishRule}
\stoplinecorrection}
%D The following macro returns a tight bound character
%D sequence.
%D
%D \useMPlibrary[txt]
%D
%D \startlinecorrection
%D \TightText{\ss\bf 123}{0cm}{3cm}{red}
%D \stoplinecorrection
\def\TightText#1#2#3#4%
{\hbox % \ruledhbox
{\startMPcode
picture p ; p := image (graphictext "#1" withfillcolor red) ;
draw p xsized #2 ysized #3 withcolor \MPcolor{#4} ;
\stopMPcode}}
\protect \endinput
|
