| 1 | -- |
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| 2 | -- Copyright (c) 2005 Sylvain Pasche, |
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| 3 | -- 2006-2007 Anton A. Patrushev, Orkney, Inc. |
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| 4 | -- |
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| 5 | -- This program is free software; you can redistribute it and/or modify |
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| 6 | -- it under the terms of the GNU General Public License as published by |
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| 7 | -- the Free Software Foundation; either version 2 of the License, or |
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| 8 | -- (at your option) any later version. |
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| 9 | -- |
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| 10 | -- This program is distributed in the hope that it will be useful, |
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| 11 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | -- GNU General Public License for more details. |
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| 14 | -- |
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| 15 | -- You should have received a copy of the GNU General Public License |
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| 16 | -- along with this program; if not, write to the Free Software |
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| 17 | -- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |
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| 19 | |
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| 20 | -- TODO: use spatial index when possible |
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| 21 | -- TODO: make variable names more consistent |
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| 22 | |
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| 23 | -- Geometry schema description: |
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| 24 | -- gid |
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| 25 | -- source |
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| 26 | -- target |
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| 27 | -- edge_id |
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| 28 | |
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| 29 | -- BEGIN; |
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| 30 | |
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| 31 | ------------------------------------------------------------ |
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| 32 | -- Returns the n'th geometry in a collection or the first |
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| 33 | -- if geometry is not a collection type. |
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| 34 | -- |
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| 35 | ------------------------------------------------------------ |
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| 36 | CREATE OR REPLACE FUNCTION relaxed_geometryN(geom geometry,n int) |
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| 37 | RETURNS geometry AS |
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| 38 | $$ |
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| 39 | DECLARE |
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| 40 | row record; |
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| 41 | BEGIN |
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| 42 | SELECT INTO row geometryN(ST_Multi(geom),n) as g; |
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| 43 | RETURN row.g; |
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| 44 | END |
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| 45 | $$ |
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| 46 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 47 | |
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| 48 | ------------------------------------------------------------ |
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| 49 | -- Returns the N'th point in the first linestring of the |
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| 50 | -- geometry or null if there is no linestring in the geometry. |
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| 51 | -- Differs from ST_PointN() in that the geometry can be a |
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| 52 | -- linestring instead of a multilinestring. |
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| 53 | -- |
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| 54 | ------------------------------------------------------------ |
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| 55 | CREATE OR REPLACE FUNCTION relaxed_PointN(geom geometry,n int) |
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| 56 | returns geometry AS |
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| 57 | $$ |
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| 58 | DECLARE |
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| 59 | row record; |
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| 60 | BEGIN |
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| 61 | SELECT INTO row ST_PointN(relaxed_geometryN(geom,1),n) as g; |
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| 62 | RETURN row.g; |
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| 63 | END |
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| 64 | $$ |
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| 65 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 66 | |
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| 67 | |
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| 68 | ------------------------------------------------------------ |
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| 69 | -- Returns the number of points in the first linestring in the |
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| 70 | -- geometry. Differs from st_NumPoints() in that the geometry |
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| 71 | -- may be a simple linestring rather than a multilinestring. |
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| 72 | ------------------------------------------------------------ |
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| 73 | CREATE OR REPLACE FUNCTION relaxed_NumPoints(geom geometry) |
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| 74 | returns int AS |
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| 75 | $$ |
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| 76 | DECLARE |
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| 77 | row record; |
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| 78 | BEGIN |
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| 79 | SELECT INTO row ST_NumPoints(relaxed_geometryN(geom,1)) as c; |
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| 80 | RETURN row.c; |
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| 81 | END |
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| 82 | $$ |
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| 83 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 84 | |
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| 85 | |
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| 86 | |
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| 87 | |
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| 88 | CREATE OR REPLACE FUNCTION text(boolean) |
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| 89 | RETURNS text AS |
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| 90 | $$ |
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| 91 | SELECT CASE WHEN $1 THEN 'true' ELSE 'false' END |
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| 92 | $$ |
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| 93 | LANGUAGE 'sql'; |
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| 94 | |
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| 95 | |
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| 96 | ----------------------------------------------------------------------- |
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| 97 | -- For each vertex in the vertices table, set a point geometry which is |
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| 98 | -- the corresponding line start or line end point |
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| 99 | ----------------------------------------------------------------------- |
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| 100 | CREATE OR REPLACE FUNCTION add_vertices_geometry(geom_table varchar,SRID int) |
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| 101 | RETURNS VOID AS |
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| 102 | $$ |
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| 103 | DECLARE |
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| 104 | vertices_table varchar := quote_ident(geom_table) || '_vertices'; |
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| 105 | BEGIN |
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| 106 | |
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| 107 | BEGIN |
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| 108 | EXECUTE 'SELECT addGeometryColumn(''' || |
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| 109 | quote_ident(vertices_table) || |
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| 110 | ''', ''the_geom'',' || quote_literal(SRID) ||', ''POINT'', 2)'; |
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| 111 | EXCEPTION |
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| 112 | WHEN DUPLICATE_COLUMN THEN |
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| 113 | END; |
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| 114 | |
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| 115 | EXECUTE 'UPDATE ' || quote_ident(vertices_table) || |
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| 116 | ' SET the_geom = NULL'; |
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| 117 | |
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| 118 | EXECUTE 'UPDATE ' || quote_ident(vertices_table) || |
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| 119 | ' SET the_geom = startPoint(relaxed_geometryn(m.the_geom, 1)) FROM ' || |
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| 120 | quote_ident(geom_table) || |
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| 121 | ' m where geom_id = m.source_id'; |
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| 122 | |
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| 123 | EXECUTE 'UPDATE ' || quote_ident(vertices_table) || |
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| 124 | ' set the_geom = st_PointN(relaxed_geometryn(m.the_geom, 1),st_NumPoints(relaxed_geometryN(m.the_geom,1))) FROM ' || |
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| 125 | quote_ident(geom_table) || |
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| 126 | ' m where geom_id = m.target_id AND ' || |
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| 127 | quote_ident(vertices_table) || |
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| 128 | '.the_geom IS NULL'; |
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| 129 | |
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| 130 | RETURN; |
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| 131 | END; |
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| 132 | $$ |
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| 133 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 134 | |
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| 135 | CREATE OR REPLACE FUNCTION add_vertices_geometry(geom_table varchar) |
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| 136 | RETURNS VOID AS |
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| 137 | $$ |
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| 138 | BEGIN |
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| 139 | |
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| 140 | BEGIN |
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| 141 | EXECUTE 'SELECT add_vertices_geometry('||quote_ident(geom_table)||',-1)'; |
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| 142 | END; |
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| 143 | |
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| 144 | RETURN; |
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| 145 | END; |
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| 146 | $$ |
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| 147 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 148 | |
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| 149 | |
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| 150 | ----------------------------------------------------------------------- |
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| 151 | -- This function should not be used directly. Use assign_vertex_id instead |
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| 152 | -- |
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| 153 | -- Inserts a point into a temporary vertices table, and return an id |
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| 154 | -- of a new point or an existing point. Tolerance is the minimal distance |
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| 155 | -- between existing points and the new point to create a new point. |
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| 156 | ----------------------------------------------------------------------- |
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| 157 | CREATE OR REPLACE FUNCTION point_to_id(point geometry, |
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| 158 | tolerance double precision) |
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| 159 | RETURNS INT AS |
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| 160 | $$ |
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| 161 | DECLARE |
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| 162 | row record; |
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| 163 | point_id int; |
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| 164 | BEGIN |
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| 165 | LOOP |
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| 166 | -- TODO: use && and index |
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| 167 | SELECT INTO row id, the_geom FROM vertices_tmp WHERE |
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| 168 | distance(the_geom, point) < tolerance; |
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| 169 | |
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| 170 | point_id := row.id; |
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| 171 | |
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| 172 | IF NOT FOUND THEN |
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| 173 | INSERT INTO vertices_tmp (the_geom) VALUES (point); |
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| 174 | ELSE |
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| 175 | EXIT; |
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| 176 | END IF; |
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| 177 | END LOOP; |
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| 178 | RETURN point_id; |
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| 179 | END; |
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| 180 | $$ |
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| 181 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 182 | |
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| 183 | |
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| 184 | ----------------------------------------------------------------------- |
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| 185 | -- Fill the source and target_id column for all lines. All line ends |
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| 186 | -- with a distance less than tolerance, are assigned the same id |
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| 187 | ----------------------------------------------------------------------- |
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| 188 | CREATE OR REPLACE FUNCTION assign_vertex_id(geom_table varchar, |
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| 189 | tolerance double precision) |
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| 190 | RETURNS VARCHAR AS |
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| 191 | $$ |
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| 192 | DECLARE |
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| 193 | row record; |
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| 194 | BEGIN |
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| 195 | SELECT INTO row assign_vertex_id(geom_table,tolerance,'the_geom','gid') AS r; |
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| 196 | return row.r; |
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| 197 | |
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| 198 | END; |
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| 199 | $$ |
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| 200 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 201 | |
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| 202 | |
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| 203 | CREATE OR REPLACE FUNCTION assign_vertex_id(geom_table varchar, |
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| 204 | tolerance double precision, |
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| 205 | geo_cname varchar, |
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| 206 | gid_cname varchar) |
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| 207 | RETURNS VARCHAR AS |
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| 208 | $$ |
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| 209 | DECLARE |
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| 210 | points record; |
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| 211 | i record; |
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| 212 | source_id int; |
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| 213 | target_id int; |
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| 214 | pre varchar; |
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| 215 | post varchar; |
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| 216 | |
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| 217 | srid integer; |
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| 218 | |
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| 219 | BEGIN |
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| 220 | |
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| 221 | BEGIN |
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| 222 | DROP TABLE vertices_tmp; |
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| 223 | EXCEPTION |
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| 224 | WHEN UNDEFINED_TABLE THEN |
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| 225 | END; |
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| 226 | |
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| 227 | CREATE TABLE vertices_tmp ( id serial ); |
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| 228 | |
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| 229 | |
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| 230 | FOR i IN EXECUTE 'SELECT srid FROM geometry_columns WHERE f_table_name='''|| quote_ident(geom_table)||'''' LOOP |
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| 231 | END LOOP; |
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| 232 | srid := i.srid; |
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| 233 | |
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| 234 | EXECUTE 'SELECT addGeometryColumn(''vertices_tmp'', ''the_geom'', '||srid||', ''POINT'', 2)'; |
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| 235 | |
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| 236 | CREATE INDEX vertices_tmp_idx ON vertices_tmp USING GIST (the_geom); |
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| 237 | |
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| 238 | pre = ''; |
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| 239 | post = ''; |
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| 240 | |
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| 241 | |
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| 242 | BEGIN |
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| 243 | EXECUTE 'ALTER TABLE '||quote_ident(geom_table)||' add column source_id int4'; |
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| 244 | EXCEPTION |
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| 245 | WHEN DUPLICATE_COLUMN THEN |
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| 246 | END; |
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| 247 | BEGIN |
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| 248 | EXECUTE 'ALTER TABLE '||quote_ident(geom_table)||' add column target_id int4'; |
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| 249 | EXCEPTION |
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| 250 | WHEN DUPLICATE_COLUMN THEN |
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| 251 | END; |
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| 252 | |
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| 253 | FOR points IN EXECUTE 'SELECT ' || quote_ident(gid_cname) || ' AS id,' |
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| 254 | || ' relaxed_PointN('|| quote_ident(geo_cname) ||', 1) AS source,' |
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| 255 | || ' relaxed_PointN('|| quote_ident(geo_cname) ||', relaxed_NumPoints('|| quote_ident(geo_cname) ||')) as target' |
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| 256 | || ' FROM ' || quote_ident(geom_table) loop |
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| 257 | |
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| 258 | source_id := point_to_id(setsrid(points.source, srid), tolerance); |
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| 259 | target_id := point_to_id(setsrid(points.target, srid), tolerance); |
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| 260 | |
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| 261 | EXECUTE 'update ' || quote_ident(geom_table) || |
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| 262 | ' SET source_id = ' || source_id || |
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| 263 | ', target_id = ' || target_id || |
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| 264 | ' WHERE ' || quote_ident(gid_cname) || ' = ' || points.id; |
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| 265 | END LOOP; |
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| 266 | |
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| 267 | RETURN 'OK'; |
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| 268 | |
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| 269 | END; |
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| 270 | $$ |
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| 271 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 272 | |
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| 273 | ----------------------------------------------------------------------- |
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| 274 | -- Update the cost column from the edges table, from the length of |
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| 275 | -- all lines which belong to an edge. |
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| 276 | ----------------------------------------------------------------------- |
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| 277 | -- FIXME: directed or not ? |
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| 278 | CREATE OR REPLACE FUNCTION update_cost_from_distance(geom_table varchar) |
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| 279 | RETURNS VOID AS |
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| 280 | $$ |
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| 281 | DECLARE |
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| 282 | BEGIN |
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| 283 | BEGIN |
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| 284 | EXECUTE 'CREATE INDEX ' || quote_ident(geom_table) || |
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| 285 | '_edge_id_idx ON ' || quote_ident(geom_table) || |
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| 286 | ' (edge_id)'; |
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| 287 | EXCEPTION |
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| 288 | WHEN DUPLICATE_TABLE THEN |
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| 289 | RAISE NOTICE 'Not creating index, already there'; |
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| 290 | END; |
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| 291 | |
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| 292 | EXECUTE 'UPDATE ' || quote_ident(geom_table) || |
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| 293 | '_edges SET cost = (SELECT sum( length( g.the_geom ) ) FROM ' || |
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| 294 | quote_ident(geom_table) || |
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| 295 | ' g WHERE g.edge_id = id GROUP BY id)'; |
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| 296 | |
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| 297 | RETURN; |
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| 298 | END; |
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| 299 | $$ |
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| 300 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 301 | |
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| 302 | |
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| 303 | CREATE TYPE geoms AS |
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| 304 | ( |
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| 305 | id integer, |
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| 306 | gid integer, |
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| 307 | the_geom geometry |
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| 308 | ); |
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| 309 | |
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| 310 | ----------------------------------------------------------------------- |
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| 311 | -- Compute the shortest path using edges and vertices table, and return |
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| 312 | -- the result as a set of (gid integer, the_geom gemoetry) records. |
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| 313 | -- This function uses the internal vertices identifiers. |
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| 314 | ----------------------------------------------------------------------- |
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| 315 | CREATE OR REPLACE FUNCTION dijkstra_sp( |
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| 316 | geom_table varchar, source int4, target int4) |
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| 317 | RETURNS SETOF GEOMS AS |
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| 318 | $$ |
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| 319 | DECLARE |
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| 320 | r record; |
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| 321 | path_result record; |
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| 322 | v_id integer; |
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| 323 | e_id integer; |
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| 324 | geom geoms; |
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| 325 | id integer; |
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| 326 | BEGIN |
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| 327 | |
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| 328 | id :=0; |
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| 329 | |
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| 330 | FOR path_result IN EXECUTE 'SELECT gid,the_geom FROM ' || |
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| 331 | 'shortest_path(''SELECT gid as id, source::integer, target::integer, ' || |
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| 332 | 'length::double precision as cost FROM ' || |
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| 333 | quote_ident(geom_table) || ''', ' || quote_literal(source) || |
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| 334 | ' , ' || quote_literal(target) || ' , false, false), ' || |
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| 335 | quote_ident(geom_table) || ' where edge_id = gid ' |
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| 336 | LOOP |
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| 337 | |
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| 338 | geom.gid := path_result.gid; |
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| 339 | geom.the_geom := path_result.the_geom; |
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| 340 | id := id+1; |
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| 341 | geom.id := id; |
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| 342 | |
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| 343 | RETURN NEXT geom; |
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| 344 | |
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| 345 | END LOOP; |
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| 346 | RETURN; |
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| 347 | END; |
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| 348 | $$ |
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| 349 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 350 | |
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| 351 | CREATE OR REPLACE FUNCTION dijkstra_sp_directed( |
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| 352 | geom_table varchar, source int4, target int4, dir boolean, rc boolean) |
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| 353 | RETURNS SETOF GEOMS AS |
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| 354 | $$ |
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| 355 | DECLARE |
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| 356 | r record; |
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| 357 | path_result record; |
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| 358 | v_id integer; |
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| 359 | e_id integer; |
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| 360 | geom geoms; |
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| 361 | query text; |
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| 362 | id integer; |
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| 363 | BEGIN |
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| 364 | |
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| 365 | id :=0; |
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| 366 | |
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| 367 | query := 'SELECT gid,the_geom FROM ' || |
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| 368 | 'shortest_path(''SELECT gid as id, source::integer, target::integer, ' || |
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| 369 | 'length::double precision as cost '; |
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| 370 | |
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| 371 | IF rc THEN query := query || ', reverse_cost '; |
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| 372 | END IF; |
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| 373 | |
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| 374 | query := query || 'FROM ' || quote_ident(geom_table) || ''', ' || quote_literal(source) || |
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| 375 | ' , ' || quote_literal(target) || ' , '''||text(dir)||''', '''||text(rc)||'''), ' || |
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| 376 | quote_ident(geom_table) || ' where edge_id = gid '; |
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| 377 | |
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| 378 | FOR path_result IN EXECUTE query |
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| 379 | LOOP |
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| 380 | |
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| 381 | geom.gid := path_result.gid; |
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| 382 | geom.the_geom := path_result.the_geom; |
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| 383 | id := id+1; |
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| 384 | geom.id := id; |
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| 385 | |
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| 386 | RETURN NEXT geom; |
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| 387 | |
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| 388 | END LOOP; |
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| 389 | RETURN; |
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| 390 | END; |
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| 391 | $$ |
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| 392 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 393 | |
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| 394 | ----------------------------------------------------------------------- |
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| 395 | -- Compute the shortest path using edges and vertices table, and return |
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| 396 | -- the result as a set of (gid integer, the_geom gemoetry) records. |
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| 397 | -- This function uses the internal vertices identifiers. |
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| 398 | -- Also data clipping added to improve function performance. |
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| 399 | ----------------------------------------------------------------------- |
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| 400 | CREATE OR REPLACE FUNCTION astar_sp_delta( |
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| 401 | varchar,int4, int4, float8) |
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| 402 | RETURNS SETOF GEOMS AS |
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| 403 | $$ |
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| 404 | DECLARE |
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| 405 | geom_table ALIAS FOR $1; |
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| 406 | sourceid ALIAS FOR $2; |
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| 407 | targetid ALIAS FOR $3; |
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| 408 | delta ALIAS FOR $4; |
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| 409 | |
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| 410 | rec record; |
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| 411 | r record; |
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| 412 | path_result record; |
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| 413 | v_id integer; |
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| 414 | e_id integer; |
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| 415 | geom geoms; |
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| 416 | |
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| 417 | id integer; |
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| 418 | BEGIN |
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| 419 | |
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| 420 | id :=0; |
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| 421 | |
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| 422 | FOR path_result IN EXECUTE 'SELECT gid,the_geom FROM ' || |
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| 423 | 'astar_sp_delta_directed(''' || |
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| 424 | quote_ident(geom_table) || ''', ' || quote_literal(sourceid) || ', ' || |
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| 425 | quote_literal(targetid) || ', ' || delta || ', false, false)' |
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| 426 | LOOP |
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| 427 | |
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| 428 | geom.gid := path_result.gid; |
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| 429 | geom.the_geom := path_result.the_geom; |
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| 430 | id := id+1; |
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| 431 | geom.id := id; |
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| 432 | |
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| 433 | RETURN NEXT geom; |
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| 434 | -- |
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| 435 | -- v_id = path_result.vertex_id; |
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| 436 | -- e_id = path_result.edge_id; |
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| 437 | |
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| 438 | -- FOR r IN EXECUTE 'SELECT gid, the_geom FROM ' || |
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| 439 | -- quote_ident(geom_table) || ' WHERE gid = ' || |
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| 440 | -- quote_literal(e_id) LOOP |
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| 441 | -- geom.gid := r.gid; |
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| 442 | -- geom.the_geom := r.the_geom; |
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| 443 | -- RETURN NEXT geom; |
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| 444 | -- END LOOP; |
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| 445 | |
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| 446 | END LOOP; |
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| 447 | RETURN; |
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| 448 | END; |
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| 449 | $$ |
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| 450 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
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| 451 | |
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| 452 | CREATE OR REPLACE FUNCTION astar_sp_delta_directed( |
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| 453 | varchar,int4, int4, float8, boolean, boolean) |
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| 454 | RETURNS SETOF GEOMS AS |
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| 455 | $$ |
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| 456 | DECLARE |
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| 457 | geom_table ALIAS FOR $1; |
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| 458 | sourceid ALIAS FOR $2; |
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| 459 | targetid ALIAS FOR $3; |
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| 460 | delta ALIAS FOR $4; |
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| 461 | dir ALIAS FOR $5; |
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| 462 | rc ALIAS FOR $6; |
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| 463 | |
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| 464 | rec record; |
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| 465 | r record; |
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| 466 | path_result record; |
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| 467 | v_id integer; |
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| 468 | e_id integer; |
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| 469 | geom geoms; |
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| 470 | |
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| 471 | srid integer; |
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| 472 | |
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| 473 | source_x float8; |
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| 474 | source_y float8; |
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| 475 | target_x float8; |
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| 476 | target_y float8; |
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| 477 | |
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| 478 | ll_x float8; |
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| 479 | ll_y float8; |
|---|
| 480 | ur_x float8; |
|---|
| 481 | ur_y float8; |
|---|
| 482 | |
|---|
| 483 | query text; |
|---|
| 484 | |
|---|
| 485 | id integer; |
|---|
| 486 | BEGIN |
|---|
| 487 | |
|---|
| 488 | id :=0; |
|---|
| 489 | FOR rec IN EXECUTE |
|---|
| 490 | 'select srid(the_geom) from ' || |
|---|
| 491 | quote_ident(geom_table) || ' limit 1' |
|---|
| 492 | LOOP |
|---|
| 493 | END LOOP; |
|---|
| 494 | srid := rec.srid; |
|---|
| 495 | |
|---|
| 496 | FOR rec IN EXECUTE |
|---|
| 497 | 'select x(startpoint(the_geom)) as source_x from ' || |
|---|
| 498 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 499 | sourceid || ' or target='||sourceid||' limit 1' |
|---|
| 500 | LOOP |
|---|
| 501 | END LOOP; |
|---|
| 502 | source_x := rec.source_x; |
|---|
| 503 | |
|---|
| 504 | FOR rec IN EXECUTE |
|---|
| 505 | 'select y(startpoint(the_geom)) as source_y from ' || |
|---|
| 506 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 507 | sourceid || ' or target='||sourceid||' limit 1' |
|---|
| 508 | LOOP |
|---|
| 509 | END LOOP; |
|---|
| 510 | |
|---|
| 511 | source_y := rec.source_y; |
|---|
| 512 | |
|---|
| 513 | FOR rec IN EXECUTE |
|---|
| 514 | 'select x(startpoint(the_geom)) as target_x from ' || |
|---|
| 515 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 516 | targetid || ' or target='||targetid||' limit 1' |
|---|
| 517 | LOOP |
|---|
| 518 | END LOOP; |
|---|
| 519 | |
|---|
| 520 | target_x := rec.target_x; |
|---|
| 521 | |
|---|
| 522 | FOR rec IN EXECUTE |
|---|
| 523 | 'select y(startpoint(the_geom)) as target_y from ' || |
|---|
| 524 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 525 | targetid || ' or target='||targetid||' limit 1' |
|---|
| 526 | LOOP |
|---|
| 527 | END LOOP; |
|---|
| 528 | target_y := rec.target_y; |
|---|
| 529 | |
|---|
| 530 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_x||'<'||target_x|| |
|---|
| 531 | ' THEN '||source_x||' ELSE '||target_x|| |
|---|
| 532 | ' END as ll_x, CASE WHEN '||source_x||'>'||target_x|| |
|---|
| 533 | ' THEN '||source_x||' ELSE '||target_x||' END as ur_x' |
|---|
| 534 | LOOP |
|---|
| 535 | END LOOP; |
|---|
| 536 | |
|---|
| 537 | ll_x := rec.ll_x; |
|---|
| 538 | ur_x := rec.ur_x; |
|---|
| 539 | |
|---|
| 540 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_y||'<'|| |
|---|
| 541 | target_y||' THEN '||source_y||' ELSE '|| |
|---|
| 542 | target_y||' END as ll_y, CASE WHEN '|| |
|---|
| 543 | source_y||'>'||target_y||' THEN '|| |
|---|
| 544 | source_y||' ELSE '||target_y||' END as ur_y' |
|---|
| 545 | LOOP |
|---|
| 546 | END LOOP; |
|---|
| 547 | |
|---|
| 548 | ll_y := rec.ll_y; |
|---|
| 549 | ur_y := rec.ur_y; |
|---|
| 550 | |
|---|
| 551 | query := 'SELECT gid,the_geom FROM ' || |
|---|
| 552 | 'shortest_path_astar(''SELECT gid as id, source::integer, ' || |
|---|
| 553 | 'target::integer, length::double precision as cost, ' || |
|---|
| 554 | 'x1::double precision, y1::double precision, x2::double ' || |
|---|
| 555 | 'precision, y2::double precision '; |
|---|
| 556 | |
|---|
| 557 | IF rc THEN query := query || ' , reverse_cost '; |
|---|
| 558 | END IF; |
|---|
| 559 | |
|---|
| 560 | query := query || 'FROM ' || quote_ident(geom_table) || ' where setSRID(''''BOX3D('|| |
|---|
| 561 | ll_x-delta||' '||ll_y-delta||','||ur_x+delta||' '|| |
|---|
| 562 | ur_y+delta||')''''::BOX3D, ' || srid || ') && the_geom'', ' || |
|---|
| 563 | quote_literal(sourceid) || ' , ' || |
|---|
| 564 | quote_literal(targetid) || ' , '''||text(dir)||''', '''||text(rc)||''' ),' || |
|---|
| 565 | quote_ident(geom_table) || ' where edge_id = gid '; |
|---|
| 566 | |
|---|
| 567 | FOR path_result IN EXECUTE query |
|---|
| 568 | LOOP |
|---|
| 569 | geom.gid := path_result.gid; |
|---|
| 570 | geom.the_geom := path_result.the_geom; |
|---|
| 571 | id := id+1; |
|---|
| 572 | geom.id := id; |
|---|
| 573 | |
|---|
| 574 | RETURN NEXT geom; |
|---|
| 575 | -- |
|---|
| 576 | -- v_id = path_result.vertex_id; |
|---|
| 577 | -- e_id = path_result.edge_id; |
|---|
| 578 | |
|---|
| 579 | -- FOR r IN EXECUTE 'SELECT gid, the_geom FROM ' || |
|---|
| 580 | -- quote_ident(geom_table) || ' WHERE gid = ' || |
|---|
| 581 | -- quote_literal(e_id) LOOP |
|---|
| 582 | -- geom.gid := r.gid; |
|---|
| 583 | -- geom.the_geom := r.the_geom; |
|---|
| 584 | -- RETURN NEXT geom; |
|---|
| 585 | -- END LOOP; |
|---|
| 586 | |
|---|
| 587 | END LOOP; |
|---|
| 588 | RETURN; |
|---|
| 589 | END; |
|---|
| 590 | $$ |
|---|
| 591 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 592 | |
|---|
| 593 | |
|---|
| 594 | CREATE OR REPLACE FUNCTION astar_sp_delta_cc( |
|---|
| 595 | varchar,int4, int4, float8, varchar) |
|---|
| 596 | RETURNS SETOF GEOMS AS |
|---|
| 597 | $$ |
|---|
| 598 | DECLARE |
|---|
| 599 | geom_table ALIAS FOR $1; |
|---|
| 600 | sourceid ALIAS FOR $2; |
|---|
| 601 | targetid ALIAS FOR $3; |
|---|
| 602 | delta ALIAS FOR $4; |
|---|
| 603 | cost_column ALIAS FOR $5; |
|---|
| 604 | |
|---|
| 605 | rec record; |
|---|
| 606 | r record; |
|---|
| 607 | path_result record; |
|---|
| 608 | v_id integer; |
|---|
| 609 | e_id integer; |
|---|
| 610 | geom geoms; |
|---|
| 611 | |
|---|
| 612 | id integer; |
|---|
| 613 | BEGIN |
|---|
| 614 | |
|---|
| 615 | id :=0; |
|---|
| 616 | FOR path_result IN EXECUTE 'SELECT gid,the_geom FROM ' || |
|---|
| 617 | 'astar_sp_delta_cc_directed(''' || |
|---|
| 618 | quote_ident(geom_table) || ''', ' || quote_literal(sourceid) || ', ' || |
|---|
| 619 | quote_literal(targetid) || ', ' || delta || ',' || |
|---|
| 620 | quote_literal(cost_column) || ', false, false)' |
|---|
| 621 | LOOP |
|---|
| 622 | |
|---|
| 623 | geom.gid := path_result.gid; |
|---|
| 624 | geom.the_geom := path_result.the_geom; |
|---|
| 625 | id := id+1; |
|---|
| 626 | geom.id := id; |
|---|
| 627 | |
|---|
| 628 | RETURN NEXT geom; |
|---|
| 629 | |
|---|
| 630 | END LOOP; |
|---|
| 631 | RETURN; |
|---|
| 632 | END; |
|---|
| 633 | $$ |
|---|
| 634 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 635 | |
|---|
| 636 | CREATE OR REPLACE FUNCTION astar_sp_delta_cc_directed( |
|---|
| 637 | varchar,int4, int4, float8, varchar, boolean, boolean) |
|---|
| 638 | RETURNS SETOF GEOMS AS |
|---|
| 639 | $$ |
|---|
| 640 | DECLARE |
|---|
| 641 | geom_table ALIAS FOR $1; |
|---|
| 642 | sourceid ALIAS FOR $2; |
|---|
| 643 | targetid ALIAS FOR $3; |
|---|
| 644 | delta ALIAS FOR $4; |
|---|
| 645 | cost_column ALIAS FOR $5; |
|---|
| 646 | dir ALIAS FOR $6; |
|---|
| 647 | rc ALIAS FOR $7; |
|---|
| 648 | |
|---|
| 649 | rec record; |
|---|
| 650 | r record; |
|---|
| 651 | path_result record; |
|---|
| 652 | v_id integer; |
|---|
| 653 | e_id integer; |
|---|
| 654 | geom geoms; |
|---|
| 655 | |
|---|
| 656 | srid integer; |
|---|
| 657 | |
|---|
| 658 | source_x float8; |
|---|
| 659 | source_y float8; |
|---|
| 660 | target_x float8; |
|---|
| 661 | target_y float8; |
|---|
| 662 | |
|---|
| 663 | ll_x float8; |
|---|
| 664 | ll_y float8; |
|---|
| 665 | ur_x float8; |
|---|
| 666 | ur_y float8; |
|---|
| 667 | |
|---|
| 668 | query text; |
|---|
| 669 | |
|---|
| 670 | id integer; |
|---|
| 671 | BEGIN |
|---|
| 672 | |
|---|
| 673 | id :=0; |
|---|
| 674 | FOR rec IN EXECUTE |
|---|
| 675 | 'select srid(the_geom) from ' || |
|---|
| 676 | quote_ident(geom_table) || ' limit 1' |
|---|
| 677 | LOOP |
|---|
| 678 | END LOOP; |
|---|
| 679 | srid := rec.srid; |
|---|
| 680 | |
|---|
| 681 | FOR rec IN EXECUTE |
|---|
| 682 | 'select x(startpoint(the_geom)) as source_x from ' || |
|---|
| 683 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 684 | sourceid || ' or target='||sourceid||' limit 1' |
|---|
| 685 | LOOP |
|---|
| 686 | END LOOP; |
|---|
| 687 | source_x := rec.source_x; |
|---|
| 688 | |
|---|
| 689 | FOR rec IN EXECUTE |
|---|
| 690 | 'select y(startpoint(the_geom)) as source_y from ' || |
|---|
| 691 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 692 | sourceid || ' or target='||sourceid||' limit 1' |
|---|
| 693 | LOOP |
|---|
| 694 | END LOOP; |
|---|
| 695 | |
|---|
| 696 | source_y := rec.source_y; |
|---|
| 697 | |
|---|
| 698 | FOR rec IN EXECUTE |
|---|
| 699 | 'select x(startpoint(the_geom)) as target_x from ' || |
|---|
| 700 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 701 | targetid || ' or target='||targetid||' limit 1' |
|---|
| 702 | LOOP |
|---|
| 703 | END LOOP; |
|---|
| 704 | |
|---|
| 705 | target_x := rec.target_x; |
|---|
| 706 | |
|---|
| 707 | FOR rec IN EXECUTE |
|---|
| 708 | 'select y(startpoint(the_geom)) as target_y from ' || |
|---|
| 709 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 710 | targetid || ' or target='||targetid||' limit 1' |
|---|
| 711 | LOOP |
|---|
| 712 | END LOOP; |
|---|
| 713 | target_y := rec.target_y; |
|---|
| 714 | |
|---|
| 715 | |
|---|
| 716 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_x||'<'||target_x|| |
|---|
| 717 | ' THEN '||source_x||' ELSE '||target_x|| |
|---|
| 718 | ' END as ll_x, CASE WHEN '||source_x||'>'||target_x|| |
|---|
| 719 | ' THEN '||source_x||' ELSE '||target_x||' END as ur_x' |
|---|
| 720 | LOOP |
|---|
| 721 | END LOOP; |
|---|
| 722 | |
|---|
| 723 | ll_x := rec.ll_x; |
|---|
| 724 | ur_x := rec.ur_x; |
|---|
| 725 | |
|---|
| 726 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_y||'<'|| |
|---|
| 727 | target_y||' THEN '||source_y||' ELSE '|| |
|---|
| 728 | target_y||' END as ll_y, CASE WHEN '|| |
|---|
| 729 | source_y||'>'||target_y||' THEN '|| |
|---|
| 730 | source_y||' ELSE '||target_y||' END as ur_y' |
|---|
| 731 | LOOP |
|---|
| 732 | END LOOP; |
|---|
| 733 | |
|---|
| 734 | ll_y := rec.ll_y; |
|---|
| 735 | ur_y := rec.ur_y; |
|---|
| 736 | |
|---|
| 737 | query := 'SELECT gid,the_geom FROM ' || |
|---|
| 738 | 'shortest_path_astar(''SELECT gid as id, source::integer, ' || |
|---|
| 739 | 'target::integer, '||cost_column||'::double precision as cost, ' || |
|---|
| 740 | 'x1::double precision, y1::double precision, x2::double ' || |
|---|
| 741 | 'precision, y2::double precision '; |
|---|
| 742 | |
|---|
| 743 | IF rc THEN query := query || ' , reverse_cost '; |
|---|
| 744 | END IF; |
|---|
| 745 | |
|---|
| 746 | query := query || 'FROM ' || quote_ident(geom_table) || ' where setSRID(''''BOX3D('|| |
|---|
| 747 | ll_x-delta||' '||ll_y-delta||','||ur_x+delta||' '|| |
|---|
| 748 | ur_y+delta||')''''::BOX3D, ' || srid || ') && the_geom'', ' || |
|---|
| 749 | quote_literal(sourceid) || ' , ' || |
|---|
| 750 | quote_literal(targetid) || ' , '''||text(dir)||''', '''||text(rc)||''' ),' || |
|---|
| 751 | quote_ident(geom_table) || ' where edge_id = gid '; |
|---|
| 752 | |
|---|
| 753 | FOR path_result IN EXECUTE query |
|---|
| 754 | LOOP |
|---|
| 755 | |
|---|
| 756 | geom.gid := path_result.gid; |
|---|
| 757 | geom.the_geom := path_result.the_geom; |
|---|
| 758 | id := id+1; |
|---|
| 759 | geom.id := id; |
|---|
| 760 | |
|---|
| 761 | RETURN NEXT geom; |
|---|
| 762 | |
|---|
| 763 | END LOOP; |
|---|
| 764 | RETURN; |
|---|
| 765 | END; |
|---|
| 766 | $$ |
|---|
| 767 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 768 | |
|---|
| 769 | |
|---|
| 770 | CREATE OR REPLACE FUNCTION dijkstra_sp_delta( |
|---|
| 771 | varchar,int4, int4, float8) |
|---|
| 772 | RETURNS SETOF GEOMS AS |
|---|
| 773 | $$ |
|---|
| 774 | DECLARE |
|---|
| 775 | geom_table ALIAS FOR $1; |
|---|
| 776 | sourceid ALIAS FOR $2; |
|---|
| 777 | targetid ALIAS FOR $3; |
|---|
| 778 | delta ALIAS FOR $4; |
|---|
| 779 | |
|---|
| 780 | rec record; |
|---|
| 781 | r record; |
|---|
| 782 | path_result record; |
|---|
| 783 | v_id integer; |
|---|
| 784 | e_id integer; |
|---|
| 785 | geom geoms; |
|---|
| 786 | |
|---|
| 787 | id integer; |
|---|
| 788 | BEGIN |
|---|
| 789 | |
|---|
| 790 | id :=0; |
|---|
| 791 | FOR path_result IN EXECUTE 'SELECT gid,the_geom FROM ' || |
|---|
| 792 | 'dijkstra_sp_delta_directed(''' || |
|---|
| 793 | quote_ident(geom_table) || ''', ' || quote_literal(sourceid) || ', ' || |
|---|
| 794 | quote_literal(targetid) || ', ' || delta || ', false, false)' |
|---|
| 795 | LOOP |
|---|
| 796 | geom.gid := path_result.gid; |
|---|
| 797 | geom.the_geom := path_result.the_geom; |
|---|
| 798 | id := id+1; |
|---|
| 799 | geom.id := id; |
|---|
| 800 | |
|---|
| 801 | RETURN NEXT geom; |
|---|
| 802 | |
|---|
| 803 | END LOOP; |
|---|
| 804 | RETURN; |
|---|
| 805 | END; |
|---|
| 806 | $$ |
|---|
| 807 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 808 | |
|---|
| 809 | CREATE OR REPLACE FUNCTION dijkstra_sp_delta_directed( |
|---|
| 810 | varchar,int4, int4, float8, boolean, boolean) |
|---|
| 811 | RETURNS SETOF GEOMS AS |
|---|
| 812 | $$ |
|---|
| 813 | DECLARE |
|---|
| 814 | geom_table ALIAS FOR $1; |
|---|
| 815 | sourceid ALIAS FOR $2; |
|---|
| 816 | targetid ALIAS FOR $3; |
|---|
| 817 | delta ALIAS FOR $4; |
|---|
| 818 | dir ALIAS FOR $5; |
|---|
| 819 | rc ALIAS FOR $6; |
|---|
| 820 | |
|---|
| 821 | rec record; |
|---|
| 822 | r record; |
|---|
| 823 | path_result record; |
|---|
| 824 | v_id integer; |
|---|
| 825 | e_id integer; |
|---|
| 826 | geom geoms; |
|---|
| 827 | |
|---|
| 828 | srid integer; |
|---|
| 829 | |
|---|
| 830 | source_x float8; |
|---|
| 831 | source_y float8; |
|---|
| 832 | target_x float8; |
|---|
| 833 | target_y float8; |
|---|
| 834 | |
|---|
| 835 | ll_x float8; |
|---|
| 836 | ll_y float8; |
|---|
| 837 | ur_x float8; |
|---|
| 838 | ur_y float8; |
|---|
| 839 | |
|---|
| 840 | query text; |
|---|
| 841 | id integer; |
|---|
| 842 | BEGIN |
|---|
| 843 | |
|---|
| 844 | id :=0; |
|---|
| 845 | FOR rec IN EXECUTE |
|---|
| 846 | 'select srid(the_geom) from ' || |
|---|
| 847 | quote_ident(geom_table) || ' limit 1' |
|---|
| 848 | LOOP |
|---|
| 849 | END LOOP; |
|---|
| 850 | srid := rec.srid; |
|---|
| 851 | |
|---|
| 852 | FOR rec IN EXECUTE |
|---|
| 853 | 'select x(startpoint(the_geom)) as source_x from ' || |
|---|
| 854 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 855 | sourceid || ' or target='||sourceid||' limit 1' |
|---|
| 856 | LOOP |
|---|
| 857 | END LOOP; |
|---|
| 858 | source_x := rec.source_x; |
|---|
| 859 | |
|---|
| 860 | FOR rec IN EXECUTE |
|---|
| 861 | 'select y(startpoint(the_geom)) as source_y from ' || |
|---|
| 862 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 863 | sourceid || ' or target='||sourceid||' limit 1' |
|---|
| 864 | LOOP |
|---|
| 865 | END LOOP; |
|---|
| 866 | |
|---|
| 867 | source_y := rec.source_y; |
|---|
| 868 | |
|---|
| 869 | FOR rec IN EXECUTE |
|---|
| 870 | 'select x(startpoint(the_geom)) as target_x from ' || |
|---|
| 871 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 872 | targetid || ' or target='||targetid||' limit 1' |
|---|
| 873 | LOOP |
|---|
| 874 | END LOOP; |
|---|
| 875 | |
|---|
| 876 | target_x := rec.target_x; |
|---|
| 877 | |
|---|
| 878 | FOR rec IN EXECUTE |
|---|
| 879 | 'select y(startpoint(the_geom)) as target_y from ' || |
|---|
| 880 | quote_ident(geom_table) || ' where source = ' || |
|---|
| 881 | targetid || ' or target='||targetid||' limit 1' |
|---|
| 882 | LOOP |
|---|
| 883 | END LOOP; |
|---|
| 884 | target_y := rec.target_y; |
|---|
| 885 | |
|---|
| 886 | |
|---|
| 887 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_x||'<'||target_x|| |
|---|
| 888 | ' THEN '||source_x||' ELSE '||target_x|| |
|---|
| 889 | ' END as ll_x, CASE WHEN '||source_x||'>'||target_x|| |
|---|
| 890 | ' THEN '||source_x||' ELSE '||target_x||' END as ur_x' |
|---|
| 891 | LOOP |
|---|
| 892 | END LOOP; |
|---|
| 893 | |
|---|
| 894 | ll_x := rec.ll_x; |
|---|
| 895 | ur_x := rec.ur_x; |
|---|
| 896 | |
|---|
| 897 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_y||'<'|| |
|---|
| 898 | target_y||' THEN '||source_y||' ELSE '|| |
|---|
| 899 | target_y||' END as ll_y, CASE WHEN '|| |
|---|
| 900 | source_y||'>'||target_y||' THEN '|| |
|---|
| 901 | source_y||' ELSE '||target_y||' END as ur_y' |
|---|
| 902 | LOOP |
|---|
| 903 | END LOOP; |
|---|
| 904 | |
|---|
| 905 | ll_y := rec.ll_y; |
|---|
| 906 | ur_y := rec.ur_y; |
|---|
| 907 | |
|---|
| 908 | query := 'SELECT gid,the_geom FROM ' || |
|---|
| 909 | 'shortest_path(''SELECT gid as id, source::integer, target::integer, ' || |
|---|
| 910 | 'length::double precision as cost '; |
|---|
| 911 | |
|---|
| 912 | IF rc THEN query := query || ' , reverse_cost '; |
|---|
| 913 | END IF; |
|---|
| 914 | |
|---|
| 915 | query := query || ' FROM ' || quote_ident(geom_table) || ' where setSRID(''''BOX3D('|| |
|---|
| 916 | ll_x-delta||' '||ll_y-delta||','||ur_x+delta||' '|| |
|---|
| 917 | ur_y+delta||')''''::BOX3D, ' || srid || ') && the_geom'', ' || |
|---|
| 918 | quote_literal(sourceid) || ' , ' || |
|---|
| 919 | quote_literal(targetid) || ' , '''||text(dir)||''', '''||text(rc)||''' ), ' || |
|---|
| 920 | quote_ident(geom_table) || ' where edge_id = gid '; |
|---|
| 921 | |
|---|
| 922 | FOR path_result IN EXECUTE query |
|---|
| 923 | LOOP |
|---|
| 924 | geom.gid := path_result.gid; |
|---|
| 925 | geom.the_geom := path_result.the_geom; |
|---|
| 926 | id := id+1; |
|---|
| 927 | geom.id := id; |
|---|
| 928 | |
|---|
| 929 | RETURN NEXT geom; |
|---|
| 930 | |
|---|
| 931 | END LOOP; |
|---|
| 932 | RETURN; |
|---|
| 933 | END; |
|---|
| 934 | $$ |
|---|
| 935 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 936 | |
|---|
| 937 | |
|---|
| 938 | CREATE OR REPLACE FUNCTION astar_sp_bbox( |
|---|
| 939 | varchar,int4, int4, float8, float8, float8, float8) |
|---|
| 940 | RETURNS SETOF GEOMS AS |
|---|
| 941 | $$ |
|---|
| 942 | DECLARE |
|---|
| 943 | geom_table ALIAS FOR $1; |
|---|
| 944 | sourceid ALIAS FOR $2; |
|---|
| 945 | targetid ALIAS FOR $3; |
|---|
| 946 | ll_x ALIAS FOR $4; |
|---|
| 947 | ll_y ALIAS FOR $5; |
|---|
| 948 | ur_x ALIAS FOR $6; |
|---|
| 949 | ur_y ALIAS FOR $7; |
|---|
| 950 | |
|---|
| 951 | rec record; |
|---|
| 952 | r record; |
|---|
| 953 | path_result record; |
|---|
| 954 | v_id integer; |
|---|
| 955 | e_id integer; |
|---|
| 956 | geom geoms; |
|---|
| 957 | |
|---|
| 958 | srid integer; |
|---|
| 959 | |
|---|
| 960 | id integer; |
|---|
| 961 | BEGIN |
|---|
| 962 | |
|---|
| 963 | id :=0; |
|---|
| 964 | FOR path_result IN EXECUTE 'SELECT gid,the_geom FROM ' || |
|---|
| 965 | 'astar_sp_bbox_directed(''' || |
|---|
| 966 | quote_ident(geom_table) || ''', ' || quote_literal(sourceid) || ', ' || |
|---|
| 967 | quote_literal(targetid) || ', ' || ll_x || ', ' || ll_y || ', ' || |
|---|
| 968 | ur_x || ', ' || ur_y || ', false, false)' |
|---|
| 969 | LOOP |
|---|
| 970 | |
|---|
| 971 | geom.gid := path_result.gid; |
|---|
| 972 | geom.the_geom := path_result.the_geom; |
|---|
| 973 | id := id+1; |
|---|
| 974 | geom.id := id; |
|---|
| 975 | |
|---|
| 976 | RETURN NEXT geom; |
|---|
| 977 | |
|---|
| 978 | END LOOP; |
|---|
| 979 | RETURN; |
|---|
| 980 | END; |
|---|
| 981 | $$ |
|---|
| 982 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 983 | |
|---|
| 984 | CREATE OR REPLACE FUNCTION astar_sp_bbox_directed( |
|---|
| 985 | varchar,int4, int4, float8, float8, float8, float8, boolean, boolean) |
|---|
| 986 | RETURNS SETOF GEOMS AS |
|---|
| 987 | $$ |
|---|
| 988 | DECLARE |
|---|
| 989 | geom_table ALIAS FOR $1; |
|---|
| 990 | sourceid ALIAS FOR $2; |
|---|
| 991 | targetid ALIAS FOR $3; |
|---|
| 992 | ll_x ALIAS FOR $4; |
|---|
| 993 | ll_y ALIAS FOR $5; |
|---|
| 994 | ur_x ALIAS FOR $6; |
|---|
| 995 | ur_y ALIAS FOR $7; |
|---|
| 996 | dir ALIAS FOR $8; |
|---|
| 997 | rc ALIAS FOR $9; |
|---|
| 998 | |
|---|
| 999 | rec record; |
|---|
| 1000 | r record; |
|---|
| 1001 | path_result record; |
|---|
| 1002 | v_id integer; |
|---|
| 1003 | e_id integer; |
|---|
| 1004 | geom geoms; |
|---|
| 1005 | |
|---|
| 1006 | srid integer; |
|---|
| 1007 | |
|---|
| 1008 | query text; |
|---|
| 1009 | |
|---|
| 1010 | id integer; |
|---|
| 1011 | BEGIN |
|---|
| 1012 | |
|---|
| 1013 | id :=0; |
|---|
| 1014 | FOR rec IN EXECUTE |
|---|
| 1015 | 'select srid(the_geom) from ' || |
|---|
| 1016 | quote_ident(geom_table) || ' limit 1' |
|---|
| 1017 | LOOP |
|---|
| 1018 | END LOOP; |
|---|
| 1019 | srid := rec.srid; |
|---|
| 1020 | |
|---|
| 1021 | query := 'SELECT gid,the_geom FROM ' || |
|---|
| 1022 | 'shortest_path_astar(''SELECT gid as id, source::integer, ' || |
|---|
| 1023 | 'target::integer, length::double precision as cost, ' || |
|---|
| 1024 | 'x1::double precision, y1::double precision, ' || |
|---|
| 1025 | 'x2::double precision, y2::double precision '; |
|---|
| 1026 | |
|---|
| 1027 | IF rc THEN query := query || ' , reverse_cost '; |
|---|
| 1028 | END IF; |
|---|
| 1029 | |
|---|
| 1030 | query := query || 'FROM ' || |
|---|
| 1031 | quote_ident(geom_table) || ' where setSRID(''''BOX3D('||ll_x||' '|| |
|---|
| 1032 | ll_y||','||ur_x||' '||ur_y||')''''::BOX3D, ' || srid || |
|---|
| 1033 | ') && the_geom'', ' || quote_literal(sourceid) || ' , ' || |
|---|
| 1034 | quote_literal(targetid) || ' , '''||text(dir)||''', '''||text(rc)||''' ),' || |
|---|
| 1035 | quote_ident(geom_table) || ' where edge_id = gid '; |
|---|
| 1036 | |
|---|
| 1037 | FOR path_result IN EXECUTE query |
|---|
| 1038 | LOOP |
|---|
| 1039 | geom.gid := path_result.gid; |
|---|
| 1040 | geom.the_geom := path_result.the_geom; |
|---|
| 1041 | id := id+1; |
|---|
| 1042 | geom.id := id; |
|---|
| 1043 | |
|---|
| 1044 | RETURN NEXT geom; |
|---|
| 1045 | |
|---|
| 1046 | END LOOP; |
|---|
| 1047 | RETURN; |
|---|
| 1048 | END; |
|---|
| 1049 | $$ |
|---|
| 1050 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 1051 | |
|---|
| 1052 | |
|---|
| 1053 | CREATE OR REPLACE FUNCTION astar_sp( |
|---|
| 1054 | geom_table varchar, source int4, target int4) |
|---|
| 1055 | RETURNS SETOF GEOMS AS |
|---|
| 1056 | $$ |
|---|
| 1057 | DECLARE |
|---|
| 1058 | r record; |
|---|
| 1059 | path_result record; |
|---|
| 1060 | v_id integer; |
|---|
| 1061 | e_id integer; |
|---|
| 1062 | geom geoms; |
|---|
| 1063 | |
|---|
| 1064 | id integer; |
|---|
| 1065 | BEGIN |
|---|
| 1066 | |
|---|
| 1067 | id :=0; |
|---|
| 1068 | FOR path_result IN EXECUTE 'SELECT gid,the_geom FROM ' || |
|---|
| 1069 | 'astar_sp_directed(''' || |
|---|
| 1070 | quote_ident(geom_table) || ''', ' || quote_literal(source) || ', ' || |
|---|
| 1071 | quote_literal(target) || ', false, false)' |
|---|
| 1072 | LOOP |
|---|
| 1073 | |
|---|
| 1074 | geom.gid := path_result.gid; |
|---|
| 1075 | geom.the_geom := path_result.the_geom; |
|---|
| 1076 | id := id+1; |
|---|
| 1077 | geom.id := id; |
|---|
| 1078 | |
|---|
| 1079 | RETURN NEXT geom; |
|---|
| 1080 | |
|---|
| 1081 | END LOOP; |
|---|
| 1082 | RETURN; |
|---|
| 1083 | END; |
|---|
| 1084 | $$ |
|---|
| 1085 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 1086 | |
|---|
| 1087 | CREATE OR REPLACE FUNCTION astar_sp_directed( |
|---|
| 1088 | geom_table varchar, source int4, target int4, dir boolean, rc boolean) |
|---|
| 1089 | RETURNS SETOF GEOMS AS |
|---|
| 1090 | $$ |
|---|
| 1091 | DECLARE |
|---|
| 1092 | r record; |
|---|
| 1093 | path_result record; |
|---|
| 1094 | v_id integer; |
|---|
| 1095 | e_id integer; |
|---|
| 1096 | geom geoms; |
|---|
| 1097 | |
|---|
| 1098 | query text; |
|---|
| 1099 | |
|---|
| 1100 | id integer; |
|---|
| 1101 | BEGIN |
|---|
| 1102 | |
|---|
| 1103 | id :=0; |
|---|
| 1104 | query := 'SELECT gid,the_geom FROM ' || |
|---|
| 1105 | 'shortest_path_astar(''SELECT gid as id, source::integer, ' || |
|---|
| 1106 | 'target::integer, length::double precision as cost, ' || |
|---|
| 1107 | 'x1::double precision, y1::double precision, ' || |
|---|
| 1108 | 'x2::double precision, y2::double precision '; |
|---|
| 1109 | |
|---|
| 1110 | IF rc THEN query := query || ' , reverse_cost '; |
|---|
| 1111 | END IF; |
|---|
| 1112 | |
|---|
| 1113 | query := query || 'FROM ' || quote_ident(geom_table) || ' '', ' || |
|---|
| 1114 | quote_literal(source) || ' , ' || |
|---|
| 1115 | quote_literal(target) || ' , '''||text(dir)||''', '''||text(rc)||'''), ' || |
|---|
| 1116 | quote_ident(geom_table) || ' where edge_id = gid '; |
|---|
| 1117 | |
|---|
| 1118 | FOR path_result IN EXECUTE query |
|---|
| 1119 | LOOP |
|---|
| 1120 | |
|---|
| 1121 | geom.gid := path_result.gid; |
|---|
| 1122 | geom.the_geom := path_result.the_geom; |
|---|
| 1123 | id := id+1; |
|---|
| 1124 | geom.id := id; |
|---|
| 1125 | |
|---|
| 1126 | RETURN NEXT geom; |
|---|
| 1127 | |
|---|
| 1128 | END LOOP; |
|---|
| 1129 | RETURN; |
|---|
| 1130 | END; |
|---|
| 1131 | $$ |
|---|
| 1132 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 1133 | |
|---|
| 1134 | CREATE OR REPLACE FUNCTION shootingstar_sp( |
|---|
| 1135 | varchar,int4, int4, float8, varchar, boolean, boolean) |
|---|
| 1136 | RETURNS SETOF GEOMS AS |
|---|
| 1137 | $$ |
|---|
| 1138 | DECLARE |
|---|
| 1139 | geom_table ALIAS FOR $1; |
|---|
| 1140 | sourceid ALIAS FOR $2; |
|---|
| 1141 | targetid ALIAS FOR $3; |
|---|
| 1142 | delta ALIAS FOR $4; |
|---|
| 1143 | cost_column ALIAS FOR $5; |
|---|
| 1144 | dir ALIAS FOR $6; |
|---|
| 1145 | rc ALIAS FOR $7; |
|---|
| 1146 | |
|---|
| 1147 | rec record; |
|---|
| 1148 | r record; |
|---|
| 1149 | path_result record; |
|---|
| 1150 | v_id integer; |
|---|
| 1151 | e_id integer; |
|---|
| 1152 | geom geoms; |
|---|
| 1153 | |
|---|
| 1154 | srid integer; |
|---|
| 1155 | |
|---|
| 1156 | source_x float8; |
|---|
| 1157 | source_y float8; |
|---|
| 1158 | target_x float8; |
|---|
| 1159 | target_y float8; |
|---|
| 1160 | |
|---|
| 1161 | ll_x float8; |
|---|
| 1162 | ll_y float8; |
|---|
| 1163 | ur_x float8; |
|---|
| 1164 | ur_y float8; |
|---|
| 1165 | |
|---|
| 1166 | query text; |
|---|
| 1167 | |
|---|
| 1168 | id integer; |
|---|
| 1169 | BEGIN |
|---|
| 1170 | |
|---|
| 1171 | id :=0; |
|---|
| 1172 | FOR rec IN EXECUTE |
|---|
| 1173 | 'select srid(the_geom) from ' || |
|---|
| 1174 | quote_ident(geom_table) || ' limit 1' |
|---|
| 1175 | LOOP |
|---|
| 1176 | END LOOP; |
|---|
| 1177 | srid := rec.srid; |
|---|
| 1178 | |
|---|
| 1179 | FOR rec IN EXECUTE |
|---|
| 1180 | 'select x(startpoint(the_geom)) as source_x from ' || |
|---|
| 1181 | quote_ident(geom_table) || ' where gid = '||sourceid |
|---|
| 1182 | LOOP |
|---|
| 1183 | END LOOP; |
|---|
| 1184 | source_x := rec.source_x; |
|---|
| 1185 | |
|---|
| 1186 | FOR rec IN EXECUTE |
|---|
| 1187 | 'select y(startpoint(the_geom)) as source_y from ' || |
|---|
| 1188 | quote_ident(geom_table) || ' where gid = ' ||sourceid |
|---|
| 1189 | LOOP |
|---|
| 1190 | END LOOP; |
|---|
| 1191 | |
|---|
| 1192 | source_y := rec.source_y; |
|---|
| 1193 | |
|---|
| 1194 | FOR rec IN EXECUTE |
|---|
| 1195 | 'select x(startpoint(the_geom)) as target_x from ' || |
|---|
| 1196 | quote_ident(geom_table) || ' where gid = ' ||targetid |
|---|
| 1197 | LOOP |
|---|
| 1198 | END LOOP; |
|---|
| 1199 | |
|---|
| 1200 | target_x := rec.target_x; |
|---|
| 1201 | |
|---|
| 1202 | FOR rec IN EXECUTE |
|---|
| 1203 | 'select y(startpoint(the_geom)) as target_y from ' || |
|---|
| 1204 | quote_ident(geom_table) || ' where gid = ' ||targetid |
|---|
| 1205 | LOOP |
|---|
| 1206 | END LOOP; |
|---|
| 1207 | target_y := rec.target_y; |
|---|
| 1208 | |
|---|
| 1209 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_x||'<'||target_x|| |
|---|
| 1210 | ' THEN '||source_x||' ELSE '||target_x|| |
|---|
| 1211 | ' END as ll_x, CASE WHEN '||source_x||'>'||target_x|| |
|---|
| 1212 | ' THEN '||source_x||' ELSE '||target_x||' END as ur_x' |
|---|
| 1213 | LOOP |
|---|
| 1214 | END LOOP; |
|---|
| 1215 | |
|---|
| 1216 | ll_x := rec.ll_x; |
|---|
| 1217 | ur_x := rec.ur_x; |
|---|
| 1218 | |
|---|
| 1219 | FOR rec IN EXECUTE 'SELECT CASE WHEN '||source_y||'<'|| |
|---|
| 1220 | target_y||' THEN '||source_y||' ELSE '|| |
|---|
| 1221 | target_y||' END as ll_y, CASE WHEN '|| |
|---|
| 1222 | source_y||'>'||target_y||' THEN '|| |
|---|
| 1223 | source_y||' ELSE '||target_y||' END as ur_y' |
|---|
| 1224 | LOOP |
|---|
| 1225 | END LOOP; |
|---|
| 1226 | |
|---|
| 1227 | ll_y := rec.ll_y; |
|---|
| 1228 | ur_y := rec.ur_y; |
|---|
| 1229 | |
|---|
| 1230 | query := 'SELECT gid,the_geom FROM ' || |
|---|
| 1231 | 'shortest_path_shooting_star(''SELECT gid as id, source::integer, ' || |
|---|
| 1232 | 'target::integer, '||cost_column||'::double precision as cost, ' || |
|---|
| 1233 | 'x1::double precision, y1::double precision, x2::double ' || |
|---|
| 1234 | 'precision, y2::double precision, rule::varchar, ' || |
|---|
| 1235 | 'to_cost::double precision '; |
|---|
| 1236 | |
|---|
| 1237 | IF rc THEN query := query || ' , reverse_cost '; |
|---|
| 1238 | END IF; |
|---|
| 1239 | |
|---|
| 1240 | query := query || 'FROM ' || quote_ident(geom_table) || ' where setSRID(''''BOX3D('|| |
|---|
| 1241 | ll_x-delta||' '||ll_y-delta||','||ur_x+delta||' '|| |
|---|
| 1242 | ur_y+delta||')''''::BOX3D, ' || srid || ') && the_geom'', ' || |
|---|
| 1243 | quote_literal(sourceid) || ' , ' || |
|---|
| 1244 | quote_literal(targetid) || ' , '''||text(dir)||''', '''||text(rc)||''' ),' || |
|---|
| 1245 | quote_ident(geom_table) || ' where edge_id = gid '; |
|---|
| 1246 | |
|---|
| 1247 | FOR path_result IN EXECUTE query |
|---|
| 1248 | LOOP |
|---|
| 1249 | geom.gid := path_result.gid; |
|---|
| 1250 | geom.the_geom := path_result.the_geom; |
|---|
| 1251 | id := id+1; |
|---|
| 1252 | geom.id := id; |
|---|
| 1253 | |
|---|
| 1254 | RETURN NEXT geom; |
|---|
| 1255 | |
|---|
| 1256 | END LOOP; |
|---|
| 1257 | RETURN; |
|---|
| 1258 | END; |
|---|
| 1259 | $$ |
|---|
| 1260 | LANGUAGE 'plpgsql' VOLATILE STRICT; |
|---|
| 1261 | |
|---|
| 1262 | -- COMMIT; |
|---|