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
|
/* Copyright (C) 2001-2020 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
Refer to licensing information at http://www.artifex.com or contact
Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato,
CA 94945, U.S.A., +1(415)492-9861, for further information.
*/
/* Basic path operators */
#include "math_.h"
#include "ghost.h"
#include "oper.h"
#include "igstate.h"
#include "gsmatrix.h"
#include "gspath.h"
#include "store.h"
/* Forward references */
static int common_to(i_ctx_t *,
int (*)(gs_gstate *, double, double));
static int common_curve(i_ctx_t *,
int (*)(gs_gstate *, double, double, double, double, double, double));
/* - newpath - */
static int
znewpath(i_ctx_t *i_ctx_p)
{
return gs_newpath(igs);
}
/* - currentpoint <x> <y> */
static int
zcurrentpoint(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
gs_point pt;
int code = gs_currentpoint(igs, &pt);
if (code < 0)
return code;
push(2);
make_real(op - 1, pt.x);
make_real(op, pt.y);
return 0;
}
/* <x> <y> moveto - */
int
zmoveto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_moveto);
}
/* <dx> <dy> rmoveto - */
int
zrmoveto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_rmoveto);
}
/* <x> <y> lineto - */
int
zlineto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_lineto);
}
/* <dx> <dy> rlineto - */
int
zrlineto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_rlineto);
}
/* Common code for [r](move/line)to */
static int
common_to(i_ctx_t *i_ctx_p,
int (*add_proc)(gs_gstate *, double, double))
{
os_ptr op = osp;
double opxy[2];
int code;
if ((code = num_params(op, 2, opxy)) < 0 ||
(code = (*add_proc)(igs, opxy[0], opxy[1])) < 0
)
return code;
pop(2);
return 0;
}
/* <x1> <y1> <x2> <y2> <x3> <y3> curveto - */
int
zcurveto(i_ctx_t *i_ctx_p)
{
return common_curve(i_ctx_p, gs_curveto);
}
/* <dx1> <dy1> <dx2> <dy2> <dx3> <dy3> rcurveto - */
int
zrcurveto(i_ctx_t *i_ctx_p)
{
return common_curve(i_ctx_p, gs_rcurveto);
}
/* Common code for [r]curveto */
static int
common_curve(i_ctx_t *i_ctx_p,
int (*add_proc)(gs_gstate *, double, double, double, double, double, double))
{
os_ptr op = osp;
double opxy[6];
int code;
if ((code = num_params(op, 6, opxy)) < 0)
return code;
code = (*add_proc)(igs, opxy[0], opxy[1], opxy[2], opxy[3], opxy[4], opxy[5]);
if (code >= 0)
pop(6);
return code;
}
/* - closepath - */
int
zclosepath(i_ctx_t *i_ctx_p)
{
return gs_closepath(igs);
}
/* - initclip - */
static int
zinitclip(i_ctx_t *i_ctx_p)
{
return gs_initclip(igs);
}
/* - clip - */
static int
zclip(i_ctx_t *i_ctx_p)
{
return gs_clip(igs);
}
/* - eoclip - */
static int
zeoclip(i_ctx_t *i_ctx_p)
{
return gs_eoclip(igs);
}
/* ------ Initialization procedure ------ */
const op_def zpath_op_defs[] =
{
{"0clip", zclip},
{"0closepath", zclosepath},
{"0currentpoint", zcurrentpoint},
{"6curveto", zcurveto},
{"0eoclip", zeoclip},
{"0initclip", zinitclip},
{"2lineto", zlineto},
{"2moveto", zmoveto},
{"0newpath", znewpath},
{"6rcurveto", zrcurveto},
{"2rlineto", zrlineto},
{"2rmoveto", zrmoveto},
op_def_end(0)
};
|
GitWeb