2 * Hic Est Leo -- Global Map Operations
4 * (c) 2014 Martin Mares <mj@ucw.cz>
10 #include <ucw/mempool.h>
11 #include <ucw/simple-lists.h>
22 double map_min_x, map_min_y;
23 double map_max_x, map_max_y;
24 double page_width, page_height;
25 uns map_clip, map_rotate, map_draw_border;
28 char *map_style_sheet;
32 static struct cf_section map_style_cf = {
33 #define P(x) PTR_TO(struct data_source_style, x)
34 CF_TYPE(struct data_source_style),
36 CF_STRING("Name", P(name)),
42 static const char * const map_formats[] = {
47 static struct cf_section map_source_cf = {
48 #define P(x) PTR_TO(struct data_source, x)
49 CF_TYPE(struct data_source),
51 CF_STRING("File", P(file)),
52 CF_LOOKUP("Format", P(format), map_formats),
53 CF_LIST("StyleSheet", P(styles), &map_style_cf),
59 static struct cf_section map_cf = {
61 CF_DOUBLE("MinX", &map_min_x),
62 CF_DOUBLE("MinY", &map_min_y),
63 CF_DOUBLE("MaxX", &map_max_x),
64 CF_DOUBLE("MaxY", &map_max_y),
65 CF_DOUBLE("PageWidth", &page_width),
66 CF_DOUBLE("PageHeight", &page_height),
67 CF_UNS("Clip", &map_clip),
68 CF_UNS("Rotate", &map_rotate),
69 CF_UNS("DrawBorder", &map_draw_border),
70 CF_LIST("Source", &map_sources, &map_source_cf),
71 CF_STRING("Projection", &map_projection),
72 CF_STRING("SVGOutput", &map_svg_output),
77 static void CONSTRUCTOR map_preinit(void)
79 cf_declare_section("Map", &map_cf, 0);
84 double page_offset_x, page_offset_y;
85 double page_map_width, page_map_height;
87 void map_set_scale(void)
89 double x_range = map_max_x - map_min_x;
90 double y_range = map_max_y - map_min_y;
91 double x_scale = page_width / x_range;
92 double y_scale = page_height / y_range;
93 map_scale = MIN(x_scale, y_scale);
94 page_map_width = x_range * map_scale;
95 page_map_height = y_range * map_scale;
96 page_offset_x = (page_width - page_map_width) / 2;
97 page_offset_y = (page_height - page_map_height) / 2;
99 msg(L_INFO, "Setting scale %.3g (orig window [%.6g,%.6g], page window [%.6g,%.6g]+[%.6g,%.6g] on [%.6g,%.6g])",
102 page_map_width, page_map_height,
103 page_offset_x, page_offset_y,
104 page_width, page_height);
106 double pmin_x = INFINITY, pmax_x = -INFINITY;
107 double pmin_y = INFINITY, pmax_y = -INFINITY;
108 double rmin_x = INFINITY, rmax_x = -INFINITY;
109 double rmin_y = INFINITY, rmax_y = -INFINITY;
110 CLIST_FOR_EACH(struct data_source *, ds, map_sources)
112 CLIST_FOR_EACH(struct osm_node *, n, ds->osm->obj_list[OSM_TYPE_NODE])
114 pmin_x = MIN(pmin_x, n->x);
115 pmax_x = MAX(pmax_x, n->x);
116 pmin_y = MIN(pmin_y, n->y);
117 pmax_y = MAX(pmax_y, n->y);
118 n->x = (n->x - map_min_x) * map_scale + page_offset_x;
119 n->y = page_height - page_offset_y - (n->y - map_min_y) * map_scale;
120 rmin_x = MIN(rmin_x, n->x);
121 rmax_x = MAX(rmax_x, n->x);
122 rmin_y = MIN(rmin_y, n->y);
123 rmax_y = MAX(rmax_y, n->y);
126 msg(L_INFO, "Bounds before scaling: [%.10g,%.10g] x [%.10g,%.10g]", pmin_x, pmax_x, pmin_y, pmax_y);
127 msg(L_INFO, "Bounds after scaling: [%.10g,%.10g] x [%.10g,%.10g]", rmin_x, rmax_x, rmin_y, rmax_y);
129 if (debug_dump_after_scaling)
131 puts("=== Map after scaling ===");
132 CLIST_FOR_EACH(struct data_source *, ds, map_sources)
140 bool map_object_visible_p(struct osm_object *o)
148 struct osm_node *n = (struct osm_node *) o;
149 return (n->x >= page_offset_x - margin && n->x <= page_offset_x + page_map_width + margin &&
150 n->y >= page_offset_y - margin && n->y <= page_offset_y + page_map_height + margin);
154 struct osm_way *w = (struct osm_way *) o;
156 OSM_FOR_EACH_BEGIN(struct osm_object *, n, w->nodes)
158 ok |= map_object_visible_p(n);
163 case OSM_TYPE_RELATION:
165 struct osm_relation *r = (struct osm_relation *) o;
167 OSM_FOR_EACH_BEGIN(struct osm_object *, n, r->members)
169 ok |= map_object_visible_p(n);
174 case OSM_TYPE_MULTIPOLYGON:
175 return map_object_visible_p(&((struct osm_multipolygon *) o)->rel->o);
181 void map_load_styles(void)
184 clist_init(&style_cache);
186 CLIST_FOR_EACH(struct data_source *, ds, map_sources)
188 CLIST_FOR_EACH(struct data_source_style *, ss, ds->styles)
190 CLIST_FOR_EACH(struct simp_node *, n, style_cache)
192 struct data_source_style *x = n->p;
193 if (!strcmp(x->name, ss->name))
201 msg(L_DEBUG, "Loading style sheet %s", ss->name);
202 ss->css = css_load(ss->name);
206 printf("=== Stylesheet %s ===", ss->name);
210 simp_append(cf_get_pool(), &style_cache)->p = ss;
216 static void map_load_source(struct data_source *ds)
218 ds->osm = osm_init();
222 case DATA_SOURCE_OSMXML:
223 msg(L_INFO, "Parsing %s as OSM XML", ds->file);
224 osm_xml_parse(ds->file);
225 if (debug_dump_source)
227 puts("=== Source data ===");
230 osm_make_multipolygons();
233 die("Invalid data source format");
236 msg(L_INFO, "Projecting");
237 osm_project(map_projection);
238 if (debug_dump_after_proj)
240 puts("=== Map after projection ===");
245 void map_load_sources(void)
247 CLIST_FOR_EACH(struct data_source *, ds, map_sources)
251 void map_apply_styles(struct svg *svg)
253 struct style_results r;
256 CLIST_FOR_EACH(struct data_source *, ds, map_sources)
258 msg(L_INFO, "Applying stylesheet on %s", ds->file);
259 for (uns i = OSM_TYPE_NODE; i <= OSM_TYPE_MULTIPOLYGON; i++)
260 CLIST_FOR_EACH(struct osm_object *, o, ds->osm->obj_list[i])
262 if (debug_dump_styling)
264 puts("===============================");
267 if (!map_object_visible_p(o))
269 if (debug_dump_styling)
270 printf("--> invisible\n");
274 CLIST_FOR_EACH(struct data_source_style *, ss, ds->styles)
275 css_apply(ss->css, &r);
276 if (debug_dump_styling)
278 sym_from_style(o, &r, svg);
283 // FIXME: Ought to destroy the style_results