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
|
#include <glib.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "debug.h"
#include "coord.h"
#include "transform.h"
#include "projection.h"
/**
* @defgroup coord Coordinate handling functions
* @{
*/
/**
* Get a coordinate
*
* @param p Pointer to the coordinate
* @returns the coordinate
*/
struct coord *
coord_get(unsigned char **p)
{
struct coord *ret=(struct coord *)(*p);
*p += sizeof(*ret);
return ret;
}
struct coord *
coord_new(int x, int y)
{
struct coord *c=g_new(struct coord, 1);
c->x=x;
c->y=y;
return c;
}
void
coord_destroy(struct coord *c)
{
g_free(c);
}
struct coord_rect *
coord_rect_new(struct coord *lu, struct coord *rl)
{
struct coord_rect *r=g_new(struct coord_rect, 1);
g_assert(lu->x <= rl->x);
g_assert(lu->y >= rl->y);
r->lu=*lu;
r->rl=*rl;
return r;
}
void
coord_rect_destroy(struct coord_rect *r)
{
g_free(r);
}
int
coord_rect_overlap(struct coord_rect *r1, struct coord_rect *r2)
{
g_assert(r1->lu.x <= r1->rl.x);
g_assert(r1->lu.y >= r1->rl.y);
g_assert(r2->lu.x <= r2->rl.x);
g_assert(r2->lu.y >= r2->rl.y);
dbg(1,"0x%x,0x%x - 0x%x,0x%x vs 0x%x,0x%x - 0x%x,0x%x\n", r1->lu.x, r1->lu.y, r1->rl.x, r1->rl.y, r2->lu.x, r2->lu.y, r2->rl.x, r2->rl.y);
if (r1->lu.x > r2->rl.x)
return 0;
if (r1->rl.x < r2->lu.x)
return 0;
if (r1->lu.y < r2->rl.y)
return 0;
if (r1->rl.y > r2->lu.y)
return 0;
return 1;
}
int
coord_rect_contains(struct coord_rect *r, struct coord *c)
{
g_assert(r->lu.x <= r->rl.x);
g_assert(r->lu.y >= r->rl.y);
if (c->x < r->lu.x)
return 0;
if (c->x > r->rl.x)
return 0;
if (c->y < r->rl.y)
return 0;
if (c->y > r->lu.y)
return 0;
return 1;
}
void
coord_rect_extend(struct coord_rect *r, struct coord *c)
{
if (c->x < r->lu.x)
r->lu.x=c->x;
if (c->x > r->rl.x)
r->rl.x=c->x;
if (c->y < r->rl.y)
r->rl.y=c->y;
if (c->y > r->lu.y)
r->lu.y=c->y;
}
/* [Proj:][Ð]DMM.ss[S][S]... N/S [D][D]DMM.ss[S][S]... E/W */
/* [Proj:][-][D]D.d[d]... [-][D][D]D.d[d]... */
/* [Proj:][-]0xX [-]0xX */
int
coord_parse(const char *c_str, enum projection pro, struct coord *c_ret)
{
int debug=0;
char *proj=NULL,*s,*co;
const char *str=c_str;
int args,ret;
struct coord_geo g;
struct coord c;
enum projection str_pro=projection_none;
dbg(1,"enter('%s',%d,%p)\n", c_str, pro, c_ret);
s=index(str,' ');
co=index(str,':');
if (co && co < s) {
proj=malloc(co-str+1);
strncpy(proj, str, co-str);
proj[co-str]='\0';
dbg(1,"projection=%s\n", proj);
str=co+1;
s=index(str,' ');
}
if (! s)
return 0;
while (*s == ' ') {
s++;
}
if (!strncmp(str, "0x", 2) || !strncmp(str,"-0x", 3)) {
args=sscanf(str, "%i %i%n",&c.x, &c.y, &ret);
if (args < 2)
return 0;
dbg(1,"str='%s' x=0x%x y=0x%x c=%d\n", str, c.x, c.y, ret);
dbg(1,"rest='%s'\n", str+ret);
if (str_pro == projection_none)
str_pro=projection_mg;
if (str_pro == projection_mg) {
*c_ret=c;
} else {
printf("help\n");
}
} else if (*s == 'N' || *s == 'n' || *s == 'S' || *s == 's') {
dbg(1,"str='%s'\n", str);
double lng, lat;
char ns, ew;
args=sscanf(str, "%lf %c %lf %c%n", &lat, &ns, &lng, &ew, &ret);
if (args < 4)
return 0;
if (str_pro == projection_none) {
g.lat=floor(lat/100);
lat-=g.lat*100;
g.lat+=lat/60;
g.lng=floor(lng/100);
lng-=g.lng*100;
g.lng+=lng/60;
transform_from_geo(pro, &g, c_ret);
}
if (debug) {
printf("str='%s' x=%f ns=%c y=%f ew=%c c=%d\n", str, lng, ns, lat, ew, ret);
printf("rest='%s'\n", str+ret);
}
} else {
double lng, lat;
args=sscanf(str, "%lf %lf%n", &lng, &lat, &ret);
if (args < 2)
return 0;
printf("str='%s' x=%f y=%f c=%d\n", str, lng, lat, ret);
printf("rest='%s'\n", str+ret);
}
if (debug)
printf("rest='%s'\n", str+ret);
ret+=str-c_str;
if (debug) {
printf("args=%d\n", args);
printf("ret=%d delta=%d ret_str='%s'\n", ret, str-c_str, c_str+ret);
}
if (proj)
free(proj);
return ret;
}
/** @} */
|
