1 |
/* |
2 |
* postscript interface |
3 |
*/ |
4 |
|
5 |
#include "config.h" |
6 |
|
7 |
#include <sstream> |
8 |
|
9 |
#include "interface.h" |
10 |
#include "ps_int.h" |
11 |
|
12 |
static const char ps_prolog[] = |
13 |
"%!PS-Adobe-2.0\n" |
14 |
"%%Creator: " PACKAGE " version " VERSION "\n" |
15 |
"%%BeginProlog\n" |
16 |
"\n" |
17 |
"/rm { rmoveto } bind def\n" |
18 |
"/rl { rlineto } bind def\n" |
19 |
"/m { moveto } bind def\n" |
20 |
"/l { lineto } bind def\n" |
21 |
"/s { stroke } bind def\n" |
22 |
"/w { setlinewidth } bind def\n" |
23 |
"\n" |
24 |
"/beginpage\n" |
25 |
" {\n" |
26 |
" clippath\n" |
27 |
" pathbbox /py2 exch def /px2 exch def /py1 exch def /px1 exch def\n" |
28 |
" /pw px2 px1 sub def /ph py2 py1 sub def\n" |
29 |
" } bind def\n" |
30 |
"\n" |
31 |
"/endpage\n" |
32 |
" {\n" |
33 |
" showpage\n" |
34 |
" } bind def\n" |
35 |
"\n" |
36 |
"/beginfig\n" |
37 |
" {\n" |
38 |
" /fy2 exch def /fx2 exch def /fy1 exch def /fx1 exch def\n" |
39 |
" /fw fx2 fx1 sub def /fh fy2 fy1 sub def\n" |
40 |
" px1 fx1 pw fw div mul sub py1 fy1 ph fh div mul sub translate\n" |
41 |
" pw fw div ph fh div scale\n" |
42 |
"% pw fw sub 0.5 mul ph fh sub 0.5 mul translate\n" |
43 |
" newpath 0 0 moveto\n" |
44 |
" } bind def\n" |
45 |
"\n" |
46 |
"/endfig\n" |
47 |
" {\n" |
48 |
" s\n" |
49 |
" } bind def\n" |
50 |
"\n" |
51 |
"/bp\n" |
52 |
" {\n" |
53 |
" gsave newpath\n" |
54 |
" } bind def\n" |
55 |
"\n" |
56 |
"/ep\n" |
57 |
" {\n" |
58 |
" closepath\n" |
59 |
" fill\n" |
60 |
" grestore\n" |
61 |
" } bind def\n" |
62 |
"\n" |
63 |
"%%EndProlog\n" |
64 |
; |
65 |
|
66 |
static const char ps_epilog[] = |
67 |
"%%Pages: 1\n" |
68 |
"%%EOF\n" |
69 |
; |
70 |
|
71 |
ps_int::ps_int (ostream &out) t_no |
72 |
: o(out) |
73 |
{ |
74 |
o << ps_prolog; |
75 |
} |
76 |
|
77 |
ps_int::~ps_int () t_no |
78 |
{ |
79 |
o << ps_epilog; |
80 |
} |
81 |
|
82 |
void ps_int::begin_fig () t_no |
83 |
{ |
84 |
x1 = 1e10; x2 = -x1; |
85 |
y1 = 1e10; y2 = -y1; |
86 |
last_pos = vec(0,0,0); |
87 |
o << "%%Page:\n" |
88 |
<< "beginpage\n"; |
89 |
fig = new ostringstream; |
90 |
} |
91 |
|
92 |
void ps_int::end_fig () t_no |
93 |
{ |
94 |
o << x1-10 << " " << y1-10 << " " << x2+10 << " " << y2+10 << " beginfig\n"; |
95 |
o << fig->str (); |
96 |
delete fig; |
97 |
o << "endfig\n" |
98 |
<< "endpage\n" |
99 |
<< "%%EndPage:\n"; |
100 |
} |
101 |
|
102 |
void ps_int::clip (const vec &v) t_no |
103 |
{ |
104 |
if (x1 > v[0]) x1 = v[0]; |
105 |
if (y1 > v[1]) y1 = v[1]; |
106 |
if (x2 < v[0]) x2 = v[0]; |
107 |
if (y2 < v[1]) y2 = v[1]; |
108 |
} |
109 |
|
110 |
void ps_int::check_attrs (const attribute_set &attr) t_err |
111 |
{ |
112 |
*fig << "s 0 0 m\n"; |
113 |
last_pos = vec(0,0,0); |
114 |
*fig << attr("width", 1) << " w\n"; |
115 |
} |
116 |
|
117 |
void ps_int::segment (const point &a, const point &b) t_err |
118 |
{ |
119 |
check_attrs (a.attr); |
120 |
|
121 |
if (last_pos[0] != a.v[0] || last_pos[1] != a.v[1]) |
122 |
{ |
123 |
clip (a.v); |
124 |
*fig << a.v[0]-last_pos[0] << " " << a.v[1]-last_pos[1] << " rm\n"; |
125 |
} |
126 |
|
127 |
clip (b.v); |
128 |
*fig << b.v[0]-a.v[0] << " " << b.v[1]-a.v[1] << " rl\n"; |
129 |
last_pos = b.v; |
130 |
} |
131 |
|
132 |
void ps_int::object (const points &v) t_err |
133 |
{ |
134 |
char moveline = 'm'; |
135 |
|
136 |
check_attrs (v.front().attr); |
137 |
|
138 |
*fig << "bp "; |
139 |
for(points::const_iterator i = v.begin (); i != v.end(); ++i) |
140 |
{ |
141 |
clip (i->v); |
142 |
*fig << i->v[0] << " " << i->v[1] << " " << moveline << " "; |
143 |
moveline = 'l'; |
144 |
} |
145 |
|
146 |
*fig << "ep\n"; |
147 |
} |
148 |
|