lemon-project-template-glpk
comparison deps/glpk/examples/graph.mod @ 9:33de93886c88
Import GLPK 4.47
author | Alpar Juttner <alpar@cs.elte.hu> |
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date | Sun, 06 Nov 2011 20:59:10 +0100 |
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-1:000000000000 | 0:b3c44ffa18b8 |
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1 /* graph.mod - graph visualization */ | |
2 | |
3 /* Written in GNU MathProg by Andrew Makhorin <mao@gnu.org> */ | |
4 | |
5 /* This model creates a picture in EPS format to visualize a graph. */ | |
6 | |
7 param file, symbolic, default "graph.eps"; | |
8 /* output file to write the picture */ | |
9 | |
10 param R, default 2; | |
11 /* radius to draw vertices, in mm */ | |
12 | |
13 param n, integer, > 0; | |
14 /* number of vertices */ | |
15 | |
16 set V, default 1..n; | |
17 /* set of vertices */ | |
18 | |
19 set E, within V cross V; | |
20 /* set of edges */ | |
21 | |
22 param x{i in V}, default 50 * cos((i - 1) / card(V) * 8 * atan(1)); | |
23 param y{i in V}, default 50 * sin((i - 1) / card(V) * 8 * atan(1)); | |
24 /* x[i] and y[i] are coordinates of node i, in mm */ | |
25 | |
26 param x0 := (min{i in V} x[i]) - R - 3.0; | |
27 param y0 := (min{i in V} y[i]) - R - 3.0; | |
28 param x1 := (max{i in V} x[i]) + R + 3.0; | |
29 param y1 := (max{i in V} y[i]) + R + 3.0; | |
30 | |
31 printf "%%!PS-Adobe-3.0 EPSF-3.0\n" > file; | |
32 printf "%%%%BoundingBox: 0 0 %d %d\n", | |
33 (72 / 25.4) * (x1 - x0), (72 / 25.4) * (y1 - y0) >> file; | |
34 printf "/Helvetica findfont 6 scalefont setfont\n" >> file; | |
35 printf "/mm { 72 mul 25.4 div } def\n" >> file; | |
36 | |
37 for {(i,j) in E} | |
38 { printf "newpath\n" >> file; | |
39 printf "%g mm %g mm moveto\n", x[i] - x0, y[i] - y0 >> file; | |
40 printf "%g mm %g mm lineto\n", x[j] - x0, y[j] - y0 >> file; | |
41 printf "closepath\n" >> file; | |
42 printf "stroke\n" >> file; | |
43 } | |
44 | |
45 for {i in V} | |
46 { printf "newpath\n" >> file; | |
47 printf "%g mm %g mm %g mm 0 360 arc\n", | |
48 x[i] - x0, y[i] - y0, R >> file; | |
49 printf "closepath\n" >> file; | |
50 printf "gsave 1 1 1 setrgbcolor fill grestore\n" >> file; | |
51 printf "stroke\n" >> file; | |
52 printf "%g mm %g mm moveto\n", | |
53 x[i] - (if i <= 9 then 1.2 else 1.8) - x0, | |
54 y[i] - 0.8 - y0 >> file; | |
55 printf "( %d ) show\n", i >> file; | |
56 } | |
57 | |
58 printf "showpage\n" >> file; | |
59 printf "%%%%EOF\n" >> file; | |
60 | |
61 data; | |
62 | |
63 param | |
64 : V : x y := | |
65 1 0 40 | |
66 2 38 12 | |
67 3 24 -32 | |
68 4 -24 -32 | |
69 5 -38 12 | |
70 6 -19 26 | |
71 7 19 26 | |
72 8 31 -10 | |
73 9 0 -32 | |
74 10 -31 -10 | |
75 11 -9 12 | |
76 12 9 12 | |
77 13 14 -5 | |
78 14 0 -15 | |
79 15 -14 -5 | |
80 16 0 0 ; | |
81 | |
82 set E := | |
83 (1,*) 6 10 16 12 7 | |
84 (2,*) 7 6 16 13 8 | |
85 (3,*) 8 7 16 14 9 | |
86 (4,*) 9 8 16 15 10 | |
87 (5,*) 10 9 16 11 6 | |
88 (6,*) 14 | |
89 (7,*) 15 | |
90 (8,*) 11 | |
91 (9,*) 12 | |
92 (10,*) 13 | |
93 (11,*) 12 15 | |
94 (12,*) 13 | |
95 (13,*) 14 | |
96 (14,*) 15 ; | |
97 | |
98 end; |