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
299
300
301
302
303
304
305
306
307
308
309
310
|
%% blockdraw.mp
%% Copyright 2006 Henrik Tidefelt
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained´.
%
% The Current Maintainer of this work is Henrik Tidefelt,
% tidefelt@isy.liu.se.
%
% This work, referred to as blockdraw.mp, consists of the files
% shiftoff.mp
% blockdraw.mp
% bondgraph.mp
% blockdraw_mp.pdf
numeric longblockrx;
numeric longblockry;
numeric smallblockr;
longblockrx := 0.7cm;
longblockry := 0.4cm;
smallblockr := 0.3cm;
numeric connectionlw;
numeric blocklw;
connectionlw := 0.8pt;
blocklw = connectionlw;
numeric textscale;
textscale := 1;
boolean implicitdraw;
implicitdraw := true;
input shiftoff;
def sizedblock(expr txt, z, rx, ry ) =
begingroup
save tmppic;
picture tmppic;
tmppic := nullpicture;
addto tmppic also shiftoff( txt scaled textscale, to_center );
addto tmppic doublepath (-rx,-ry)--(-rx,ry)--(rx,ry)--(rx,-ry)--cycle withpen pencircle scaled blocklw;
tmppic := tmppic shifted z;
if implicitdraw:
draw tmppic;
fi
tmppic
endgroup
enddef;
def longblock(expr txt, z ) =
sizedblock( txt, z, longblockrx, longblockry )
enddef;
def squareblock(expr txt, z ) =
sizedblock( txt, z, smallblockr, smallblockr )
enddef;
def roundblock(expr txt, z ) =
begingroup
save tmppic;
picture tmppic;
tmppic := nullpicture;
addto tmppic also shiftoff( txt scaled textscale, to_center );
addto tmppic doublepath (smallblockr,0)...(0,smallblockr)...(-smallblockr,0)...(0,-smallblockr)...cycle withpen pencircle scaled blocklw;
tmppic := tmppic shifted z;
if implicitdraw:
draw tmppic;
fi
tmppic
endgroup
enddef;
def splitdot(expr z ) =
begingroup
save tmppic;
picture tmppic;
tmppic := nullpicture;
addto tmppic contour fullcircle scaled 2.5connectionlw shifted z;
if implicitdraw:
draw tmppic;
fi
tmppic
endgroup
enddef;
def termcircle(expr z ) =
begingroup
save tmppic;
picture tmppic;
tmppic := nullpicture;
addto tmppic doublepath fullcircle scaled 7connectionlw shifted z;
if implicitdraw:
draw tmppic;
fi
tmppic
endgroup
enddef;
def pointpicture(expr z ) =
begingroup
save tmppic;
picture tmppic;
tmppic := nullpicture;
addto tmppic contour fullcircle scaled 0 shifted z;
tmppic
endgroup
enddef;
def mspoint( expr pth, mediation, slide ) =
(point (arctime mediation * arclength(pth) + slide of pth) of pth)
enddef;
def hhconnect(expr pa, pb, mediation, slide ) =
begingroup
save mid, respath;
numeric mid;
path respath;
mid := (mediation)[ xpart pa, xpart pb ] + (if (xpart pb) > (xpart pa): 1 else: -1 fi) * slide;
respath := pa--( mid, ypart pa )--( mid, ypart pb )--pb;
if implicitdraw:
drawarrow respath withpen pencircle scaled connectionlw;
fi
respath
endgroup
enddef;
def vvconnect(expr pa, pb, mediation, slide ) =
begingroup
save mid, respath;
numeric mid;
path respath;
mid := (mediation)[ ypart pa, ypart pb ] + (if (ypart pb) > (ypart pa): 1 else: -1 fi) * slide;
respath := pa--( xpart pa, mid )--( xpart pb, mid )--pb;
if implicitdraw:
drawarrow respath withpen pencircle scaled connectionlw;
fi
respath
endgroup
enddef;
def hvconnect(expr pa, pb ) =
begingroup
save respath;
path respath;
respath := pa--( xpart pb, ypart pa )--pb;
if implicitdraw:
drawarrow respath withpen pencircle scaled connectionlw;
fi
respath
endgroup
enddef;
def vhconnect(expr pa, pb ) =
begingroup
save respath;
path respath;
respath := pa--( xpart pa, ypart pb )--pb;
if implicitdraw:
drawarrow respath withpen pencircle scaled connectionlw;
fi
respath
endgroup
enddef;
def conlabel(expr shiftdir, txt, z ) =
begingroup
save tmppic;
picture tmppic;
tmppic := shiftoffwlm( txt scaled textscale, shiftdir ) shifted z;
if implicitdraw:
draw tmppic;
fi
tmppic
endgroup
enddef;
def leftpoint(expr pic, n, i ) =
(i/(n+1))[llcorner pic,ulcorner pic]
enddef;
def rightpoint(expr pic, n, i ) =
(i/(n+1))[lrcorner pic,urcorner pic]
enddef;
def bottompoint(expr pic, n, i ) =
(i/(n+1))[llcorner pic,lrcorner pic]
enddef;
def toppoint(expr pic, n, i ) =
(i/(n+1))[ulcorner pic,urcorner pic]
enddef;
def llconnect(expr pica, picb, slide ) =
begingroup
hhconnect( leftpoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ), 0.5, slide )
endgroup
enddef;
def rrconnect(expr pica, picb, slide ) =
begingroup
hhconnect( rightpoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ), 0.5, slide )
endgroup
enddef;
def ttconnect(expr pica, picb, slide ) =
begingroup
vvconnect( toppoint( pica, 1, 1 ), toppoint( picb, 1, 1 ), 0.5, slide )
endgroup
enddef;
def bbconnect(expr pica, picb, slide ) =
begingroup
vvconnect( bottompoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ), 0.5, slide )
endgroup
enddef;
def lrconnect(expr pica, picb ) =
begingroup
hhconnect( leftpoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ), 0.5, 0 )
endgroup
enddef;
def rlconnect(expr pica, picb ) =
begingroup
hhconnect( rightpoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ), 0.5, 0 )
endgroup
enddef;
def btconnect(expr pica, picb ) =
begingroup
vvconnect( bottompoint( pica, 1, 1 ), toppoint( picb, 1, 1 ), 0.5, 0 )
endgroup
enddef;
def tbconnect(expr pica, picb ) =
begingroup
vvconnect( toppoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ), 0.5, 0 )
endgroup
enddef;
def ltconnect(expr pica, picb ) =
begingroup
hvconnect( leftpoint( pica, 1, 1 ), toppoint( picb, 1, 1 ) )
endgroup
enddef;
def lbconnect(expr pica, picb ) =
begingroup
hvconnect( leftpoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ) )
endgroup
enddef;
def rtconnect(expr pica, picb ) =
begingroup
hvconnect( rightpoint( pica, 1, 1 ), toppoint( picb, 1, 1 ) )
endgroup
enddef;
def rbconnect(expr pica, picb ) =
begingroup
hvconnect( rightpoint( pica, 1, 1 ), bottompoint( picb, 1, 1 ) )
endgroup
enddef;
def tlconnect(expr pica, picb ) =
begingroup
vhconnect( toppoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ) )
endgroup
enddef;
def trconnect(expr pica, picb ) =
begingroup
vhconnect( toppoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ) )
endgroup
enddef;
def blconnect(expr pica, picb ) =
begingroup
vhconnect( bottompoint( pica, 1, 1 ), leftpoint( picb, 1, 1 ) )
endgroup
enddef;
def brconnect(expr pica, picb ) =
begingroup
vhconnect( bottompoint( pica, 1, 1 ), rightpoint( picb, 1, 1 ) )
endgroup
enddef;
def connect(expr pica, picb ) =
begingroup
save rxa, rya, rxb, ryb;
numeric rxa;
numeric rya;
numeric rxb;
numeric ryb;
save ca, cb;
pair ca;
pair cb;
rxa = 0.5 * ((xpart lrcorner pica) - (xpart llcorner pica));
rya = 0.5 * ((ypart ulcorner pica) - (ypart llcorner pica));
rxb = 0.5 * ((xpart lrcorner picb) - (xpart llcorner picb));
ryb = 0.5 * ((ypart ulcorner picb) - (ypart llcorner picb));
ca = center pica;
cb = center picb;
if (xpart ca) < (xpart cb) - ( rxa + rxb ):
if (ypart ca) < (ypart cb) - ( rya + ryb ):
rbconnect( pica, picb )
elseif (ypart ca) > (ypart cb) + ( rya + ryb ):
rtconnect( pica, picb )
else:
rlconnect( pica, picb )
fi
elseif (xpart ca) > (xpart cb) + ( rxa + rxb ):
if (ypart ca) < (ypart cb) - ( rya + ryb ):
lbconnect( pica, picb )
elseif (ypart ca) > (ypart cb) + ( rya + ryb ):
ltconnect( pica, picb )
else:
lrconnect( pica, picb )
fi
else:
if (ypart ca) < (ypart cb) - ( rya + ryb ):
tbconnect( pica, picb )
elseif (ypart ca) > (ypart cb) + ( rya + ryb ):
btconnect( pica, picb )
else:
hvconnect( center pica, center picb )
fi
fi
endgroup
enddef;
|
