2 * Hic Est Leo -- OSM Data Representation
4 * (c) 2014 Martin Mares <mj@ucw.cz>
9 #include <ucw/mempool.h>
10 #include <ucw/stkstring.h>
11 #include <ucw/strtonum.h>
22 /*** Generic objects ***/
24 struct osm_id_to_obj {
29 #define P(x) [OSM_TYPE_##x] = #x,
30 const char * const osm_obj_type_names[OSM_TYPE_MAX] = {
31 [OSM_TYPE_INVALID] = "Invalid",
32 [OSM_TYPE_NODE] = "Node",
33 [OSM_TYPE_WAY] = "Way",
34 [OSM_TYPE_RELATION] = "Relation",
35 [OSM_TYPE_MULTIPOLYGON] = "Multipolygon",
39 #define HASH_NODE struct osm_id_to_obj
40 #define HASH_PREFIX(x) osm_id_hash_##x
41 #define HASH_KEY_ATOMIC id
42 #define HASH_ATOMIC_TYPE osm_id_t
43 #define HASH_WANT_FIND
44 #define HASH_WANT_LOOKUP
45 #define HASH_TABLE_VARS struct mempool *pool;
46 #define HASH_USE_POOL table->pool
47 #define HASH_ZERO_FILL
48 #define HASH_TABLE_DYNAMIC
49 #include <ucw/hashtable.h>
51 osm_id_t osm_parse_id(const char *str)
54 const char *err = str_to_uintmax(&id, str, NULL, STN_WHOLE | STN_MINUS | 10);
55 if (err || id != (osm_id_t)id)
56 return OSM_INVALID_ID;
61 struct osm_object *osm_obj_find_by_id(enum osm_object_type type, osm_id_t id)
63 ASSERT(type != OSM_TYPE_INVALID && type < OSM_TYPE_MAX);
64 struct osm_id_to_obj *ii = osm_id_hash_find(osm_this->id_hash[type], id);
65 return ii ? ii->o : NULL;
68 static void *osm_obj_new(enum osm_object_type type, osm_id_t id, uns size)
70 ASSERT(type != OSM_TYPE_INVALID && type < OSM_TYPE_MAX);
71 struct osm_id_to_obj *ii = osm_id_hash_lookup(osm_this->id_hash[type], id);
73 die("Id %ju for type %s defined twice", (uintmax_t) id, osm_obj_type_names[type]);
75 struct osm_object *o = mp_alloc_zero(osm_this->pool, size);
76 clist_add_tail(&osm_this->obj_list[type], &o->n);
77 osm_this->obj_cnt[type]++;
81 clist_init(&o->backrefs);
86 void osm_ref_add(struct osm_object *parent, clist *list, struct osm_object *son, osm_val_t role)
88 ASSERT(parent != son);
90 struct osm_ref *ref = mp_alloc(osm_this->pool, sizeof(*ref));
93 clist_add_tail(list, &ref->n);
95 struct osm_ref *backref = mp_alloc(osm_this->pool, sizeof(*ref));
98 clist_add_tail(&son->backrefs, &backref->n);
101 void osm_obj_dump(struct osm_object *o)
106 osm_node_dump((struct osm_node *) o);
109 osm_way_dump((struct osm_way *) o);
111 case OSM_TYPE_RELATION:
112 osm_relation_dump((struct osm_relation *) o);
114 case OSM_TYPE_MULTIPOLYGON:
115 osm_multipolygon_dump((struct osm_multipolygon *) o);
122 void osm_obj_warn(struct osm_object *o, const char *mesg, ...)
125 va_start(args, mesg);
126 msg(L_WARN, "%s: %s", STK_OSM_NAME(o), stk_vprintf(mesg, args));
132 struct dict osm_key_dict, osm_value_dict;
134 void osm_obj_add_tag_raw(struct osm_object *o, osm_key_t key, osm_val_t val)
136 struct osm_tag *t = mp_alloc(osm_this->pool, sizeof(*t));
139 clist_add_tail(&o->tags, &t->n);
142 void osm_obj_add_tag(struct osm_object *o, const char *key, const char *val)
144 osm_obj_add_tag_raw(o, osm_key_encode(key), osm_val_encode(val));
147 osm_val_t osm_obj_find_tag(struct osm_object *o, osm_key_t key)
149 CLIST_FOR_EACH(struct osm_tag *, t, o->tags)
155 void osm_tag_dump(struct osm_tag *t)
157 printf("\t%s = %s\n", osm_key_decode(t->key), osm_val_decode(t->val));
160 static const char * const osm_wk_keys[] = {
162 #define P(x,y) [KEY_##x] = y,
163 #include "dict-keys.h"
168 static const char * const osm_wk_values[] = {
170 #define P(x,y) [VALUE_##x] = y,
171 #include "dict-values.h"
176 static void osm_tag_init(void)
178 dict_init(&osm_key_dict, osm_wk_keys);
179 dict_init(&osm_value_dict, osm_wk_values);
184 struct osm_node *osm_node_new(osm_id_t id)
186 struct osm_node *n = osm_obj_new(OSM_TYPE_NODE, id, sizeof(*n));
190 void osm_node_dump(struct osm_node *n)
192 printf("Node %ju: (%f,%f)\n", (uintmax_t) n->o.id, n->x, n->y);
193 CLIST_FOR_EACH(struct osm_tag *, t, n->o.tags)
197 void osm_node_dump_all(void)
199 printf("Known nodes:\n");
200 CLIST_FOR_EACH(struct osm_node *, n, osm_this->obj_list[OSM_TYPE_NODE])
207 struct osm_way *osm_way_new(osm_id_t id)
209 struct osm_way *w = osm_obj_new(OSM_TYPE_WAY, id, sizeof(*w));
210 clist_init(&w->nodes);
214 void osm_way_add_node(struct osm_way *w, struct osm_node *n)
216 osm_ref_add(&w->o, &w->nodes, &n->o, 0);
219 void osm_way_dump(struct osm_way *w)
221 printf("Way %ju%s\n", (uintmax_t) w->o.id, (osm_way_cyclic_p(w) ? " (cyclic)" : ""));
222 CLIST_FOR_EACH(struct osm_tag *, t, w->o.tags)
224 OSM_FOR_EACH_BEGIN(struct osm_node *, n, w->nodes)
226 printf("\tNode %ju\n", (uintmax_t) n->o.id);
231 void osm_way_dump_all(void)
233 printf("Known ways:\n");
234 CLIST_FOR_EACH(struct osm_way *, w, osm_this->obj_list[OSM_TYPE_WAY])
239 bool osm_way_cyclic_p(struct osm_way *w)
241 struct osm_ref *first_ref = clist_head(&w->nodes);
242 struct osm_ref *last_ref = clist_tail(&w->nodes);
243 return (first_ref && last_ref &&
244 first_ref != last_ref &&
245 first_ref->o == last_ref->o);
250 struct osm_relation *osm_relation_new(osm_id_t id)
252 struct osm_relation *r = osm_obj_new(OSM_TYPE_RELATION, id, sizeof(*r));
253 clist_init(&r->members);
257 void osm_relation_add_member(struct osm_relation *r, struct osm_object *o, const char *role)
259 osm_ref_add(&r->o, &r->members, o, (role && role[0] ? osm_val_encode(role) : 0));
262 void osm_relation_dump(struct osm_relation *r)
264 printf("Relation %ju\n", (uintmax_t) r->o.id);
265 CLIST_FOR_EACH(struct osm_tag *, t, r->o.tags)
267 CLIST_FOR_EACH(struct osm_ref *, f, r->members)
268 printf("\tRole %s: %s %ju\n", (f->role ? osm_val_decode(f->role) : "<none>"), osm_obj_type_names[f->o->type], (uintmax_t) f->o->id);
271 void osm_relation_dump_all(void)
273 printf("Known relations:\n");
274 CLIST_FOR_EACH(struct osm_relation *, r, osm_this->obj_list[OSM_TYPE_RELATION])
275 osm_relation_dump(r);
279 /*** Multipolygons ***/
281 void osm_multipolygon_dump(struct osm_multipolygon *m)
283 printf("Multipolygon %ju\n", (uintmax_t) m->o.id);
284 CLIST_FOR_EACH(struct osm_tag *, t, m->o.tags)
286 CLIST_FOR_EACH(struct osm_mpg_boundary *, b, m->boundaries)
288 printf("\tBoundary inner=%u\n", b->inner);
289 CLIST_FOR_EACH(struct osm_ref *, f, b->nodes)
290 printf("\t\tNode %ju\n", (uintmax_t) f->o->id);
294 void osm_multipolygon_dump_all(void)
296 printf("Known multipolygons:\n");
297 CLIST_FOR_EACH(struct osm_multipolygon *, r, osm_this->obj_list[OSM_TYPE_MULTIPOLYGON])
298 osm_multipolygon_dump(r);
302 static struct mempool *mpg_pool;
303 static struct osm_multipolygon *mpg_current;
307 struct osm_object *o;
308 clist edges; // of mpg_edge's
314 struct mpg_edge *twin;
315 struct mpg_vertex *dest;
319 #define HASH_NODE struct mpg_vertex
320 #define HASH_PREFIX(x) mpg_vertex_hash_##x
321 #define HASH_KEY_ATOMIC id
322 #define HASH_ATOMIC_TYPE osm_id_t
323 #define HASH_USE_POOL mpg_pool
324 #define HASH_TABLE_ALLOC
325 #define HASH_WANT_LOOKUP
326 #define HASH_LOOKUP_DETECT_NEW
327 #include <ucw/hashtable.h>
329 static void mpg_insert_way(struct osm_way *w)
331 struct mpg_vertex *prev = NULL;
332 OSM_FOR_EACH_BEGIN(struct osm_node *, n, w->nodes)
335 struct mpg_vertex *v = mpg_vertex_hash_lookup(n->o.id, &new);
338 clist_init(&v->edges);
344 struct mpg_edge *e1 = mp_alloc_zero(mpg_pool, sizeof(*e1));
345 struct mpg_edge *e2 = mp_alloc_zero(mpg_pool, sizeof(*e2));
348 clist_add_tail(&prev->edges, &e1->n);
351 clist_add_tail(&v->edges, &e2->n);
358 static void UNUSED mpg_dump(void)
360 printf("=== Multipolygon graph for relation %ju ===\n", (uintmax_t) mpg_current->o.id);
361 HASH_FOR_ALL(mpg_vertex_hash, v)
363 printf("Vertex %ju\n", (uintmax_t) v->id);
364 CLIST_FOR_EACH(struct mpg_edge *, e, v->edges)
365 printf("\t-> %ju\n", (uintmax_t) e->dest->id);
371 static void mpg_walk_boundary(struct osm_multipolygon *m, bool inner)
373 // FIXME: Replace by a better algorithm, which respects geometry
374 // and is able to cope with higher degree vertices.
375 HASH_FOR_ALL(mpg_vertex_hash, v)
379 struct osm_mpg_boundary *b = mp_alloc(osm_this->pool, sizeof(*b));
380 clist_add_tail(&m->boundaries, &b->n);
382 clist_init(&b->nodes);
384 struct mpg_vertex *w = v;
385 while (w && !w->visited)
388 struct osm_ref *f = mp_alloc(osm_this->pool, sizeof(*f));
389 clist_add_tail(&b->nodes, &f->n);
393 struct mpg_vertex *dest = NULL;
394 CLIST_FOR_EACH(struct mpg_edge *, e, w->edges)
401 osm_obj_warn(&mpg_current->o, "Suspicious vertex degree of node %ju", (uintmax_t) w->o->id);
416 osm_obj_warn(&mpg_current->o, "Boundary not closed");
418 osm_obj_warn(&mpg_current->o, "Boundary not closed at node %ju", (uintmax_t) w->o->id);
420 struct osm_ref *f = mp_alloc(osm_this->pool, sizeof(*f));
421 clist_add_tail(&b->nodes, &f->n);
429 static void osm_multipolygon_make(struct osm_relation *r)
431 struct osm_multipolygon *m = osm_obj_new(OSM_TYPE_MULTIPOLYGON, r->o.id, sizeof(*m));
434 CLIST_FOR_EACH(struct osm_tag *, t, r->o.tags)
435 osm_obj_add_tag_raw(&m->o, t->key, t->val);
436 clist_init(&m->boundaries);
438 for (int inner=0; inner<2; inner++)
441 mpg_pool = mp_new(4096);
442 mpg_vertex_hash_init();
444 CLIST_FOR_EACH(struct osm_ref *, f, r->members)
446 struct osm_object *o = f->o;
447 if (f->role != VALUE_INNER && f->role != VALUE_OUTER)
450 osm_obj_warn(o, "Unknown role %s in multipolygon relation", osm_val_decode(f->role));
453 if ((f->role == VALUE_INNER) != inner)
455 if (o->type == OSM_TYPE_WAY)
456 mpg_insert_way((struct osm_way *) o);
458 osm_obj_warn(o, "Only ways are supported in multipolygon boundaries");
461 if (debug_dump_multipolygons)
464 mpg_walk_boundary(m, inner);
469 void osm_make_multipolygons(void)
473 CLIST_FOR_EACH(struct osm_relation *, r, osm_this->obj_list[OSM_TYPE_RELATION])
474 if (osm_obj_find_tag(&r->o, KEY_TYPE) == VALUE_MULTIPOLYGON)
476 osm_multipolygon_make(r);
479 msg(L_INFO, "Converted %u relations to multipolygons", mpg_cnt);
484 static projPJ osm_pj;
486 void osm_project(const char *spec)
488 osm_pj = pj_init_plus(spec);
490 die("Unable to initialize projection %s", spec);
492 CLIST_FOR_EACH(struct osm_node *, n, osm_this->obj_list[OSM_TYPE_NODE])
495 p.u = n->x * DEG_TO_RAD;
496 p.v = n->y * DEG_TO_RAD;
497 p = pj_fwd(p, osm_pj);
503 /*** Object centers ***/
505 bool osm_obj_center(struct osm_object *o, double *xp, double *yp)
511 struct osm_node *n = (struct osm_node *) o;
518 struct osm_way *w = (struct osm_way *) o;
519 double sx = 0, sy = 0;
521 OSM_FOR_EACH_BEGIN(struct osm_node *, n, w->nodes)
534 case OSM_TYPE_MULTIPOLYGON:
536 struct osm_multipolygon *m = (struct osm_multipolygon *) o;
537 double sx = 0, sy = 0;
539 CLIST_FOR_EACH(struct osm_mpg_boundary *, b, m->boundaries)
543 OSM_FOR_EACH_BEGIN(struct osm_node *, n, b->nodes)
564 struct osm *osm_init(void)
566 struct mempool *mp = mp_new(65536);
567 struct osm *osm = mp_alloc_zero(mp, sizeof(*osm));
570 for (int i=0; i<OSM_TYPE_MAX; i++)
572 clist_init(&osm->obj_list[i]);
573 osm->id_hash[i] = mp_alloc(mp, sizeof(struct osm_id_hash_table));
574 osm->id_hash[i]->pool = mp;
575 osm_id_hash_init(osm->id_hash[i]);
588 osm_relation_dump_all();
589 osm_multipolygon_dump_all();
594 msg(L_INFO, "Loaded %u nodes, %u ways, %u relations",
595 osm_this->obj_cnt[OSM_TYPE_NODE],
596 osm_this->obj_cnt[OSM_TYPE_WAY],
597 osm_this->obj_cnt[OSM_TYPE_RELATION]);