partial isochrones backport

configuration.conf

@@ -31,6 +31,7 @@ vrppdtw             | N | Y | Y
 withPoints          | Y | Y | Y
 lineGraph           | Y | Y | Y
 components          | Y | Y | Y
+isochrones          | Y | Y | N
 #----------------------
 # SQL only directories
 #----------------------

include/drivers/isochrones/isochrones_driver.h

@@ -0,0 +1,53 @@
+/*PGR-GNU*****************************************************************
+File: isochrones_driver.h
+
+Copyright (c) 2020 Vjeran Crnjak
+vjeran@crnjak.xyz
+
+------
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+********************************************************************PGR-GNU*/
+
+#ifndef INCLUDE_DRIVERS_ISOCHRONES_MANY_TO_ISOCHRONES_H_
+#define INCLUDE_DRIVERS_ISOCHRONES_MANY_TO_ISOCHRONES_H_
+
+/* for size_t */
+#ifdef __cplusplus
+#include <cstddef>
+#else
+#include <stddef.h>
+#endif
+
+#include "c_types/general_path_element_t.h"
+#include "c_types/pgr_edge_t.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void do_pgr_many_to_isochrones(pgr_edge_t *edges, size_t total_edges,
+                               int64_t *start_vertex, size_t s_len,
+                               double distance, bool directed, bool equicost,
+                               General_path_element_t **return_tuples,
+                               size_t *return_count, char **log_msg,
+                               char **notice_msg, char **err_msg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // INCLUDE_DRIVERS_ISOCHRONES_MANY_TO_ISOCHRONES_H_

sql/isochrones/CMakeLists.txt

@@ -0,0 +1,12 @@
+
+SET(LOCAL_FILES
+  isochrones.sql
+)
+
+foreach (f ${LOCAL_FILES})
+configure_file(${f} ${f})
+list(APPEND PACKAGE_SQL_FILES  ${CMAKE_CURRENT_BINARY_DIR}/${f})
+endforeach()
+
+set(PgRouting_SQL_FILES ${PgRouting_SQL_FILES} ${PACKAGE_SQL_FILES} PARENT_SCOPE)
+

sql/isochrones/isochrones.sql

@@ -0,0 +1,61 @@
+/*PGR-GNU*****************************************************************
+
+Copyright (c) 2020 Vjeran Crnjak
+Mail: vjeran@crnjak.xyz
+
+------
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+********************************************************************PGR-GNU*/
+
+CREATE OR REPLACE FUNCTION pgr_isochrones(
+    edges_sql text,
+    start_vids anyarray,
+    distance FLOAT,
+    directed BOOLEAN DEFAULT TRUE,
+    equicost BOOLEAN DEFAULT FALSE,
+    OUT seq integer,
+    OUT from_v  bigint,
+    OUT node bigint,
+    OUT edge bigint,
+    OUT cost FLOAT,
+    OUT agg_cost FLOAT)
+  RETURNS SETOF RECORD AS
+     '${MODULE_PATHNAME}', 'many_to_isochrones'
+ LANGUAGE c VOLATILE STRICT;
+
+
+CREATE OR REPLACE FUNCTION pgr_isochrones(
+    edges_sql text,
+    start_vid bigint,
+    distance FLOAT8,
+    directed BOOLEAN DEFAULT TRUE,
+    OUT seq integer,
+    OUT node bigint,
+    OUT edge bigint,
+    OUT cost FLOAT,
+    OUT agg_cost FLOAT)
+  RETURNS SETOF RECORD AS
+$BODY$
+    SELECT a.seq, a.node, a.edge, a.cost, a.agg_cost
+    FROM pgr_isochrones($1, ARRAY[$2]::BIGINT[], $3, $4, false) a;
+$BODY$
+LANGUAGE SQL VOLATILE STRICT
+COST 100
+ROWS 1000;
+
+
+

sql/sigs/pgrouting--2.6.3.sig

@@ -75,6 +75,8 @@ pgr_dijkstravia(text,anyarray,boolean,boolean,boolean)
 pgr_drivingdistance(text,anyarray,double precision,boolean,boolean)
 pgr_drivingdistance(text,bigint,double precision,boolean)
 pgr_drivingdistance(text,bigint,double precision,boolean,boolean)
+pgr_isochrones(text,anyarray,double precision,boolean,boolean)
+pgr_isochrones(text,bigint,double precision,boolean)
 pgr_edgedisjointpaths(text,anyarray,anyarray,boolean)
 pgr_edgedisjointpaths(text,anyarray,bigint,boolean)
 pgr_edgedisjointpaths(text,bigint,anyarray,boolean)

src/isochrones/CMakeLists.txt

@@ -0,0 +1,4 @@
+ADD_LIBRARY(isochrones OBJECT
+    many_to_isochrones.c
+    isochrones_driver.cpp
+ )