76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
#ifndef USE_MYSQL
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#ifndef USE_PGSQL
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#error One of USE_MYSQL or USE_PGSQL must be defined
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#endif
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#endif
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#include <math.h>
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#include <quad_tile.h>
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#ifdef USE_MYSQL
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#ifdef USE_PGSQL
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#error ONLY one of USE_MYSQL and USE_PGSQL should be defined
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#endif
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#include <my_global.h>
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#include <my_sys.h>
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#include <m_string.h>
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#include <mysql.h>
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my_bool tile_for_point_init(UDF_INIT *initid, UDF_ARGS *args, char *message)
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{
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if ( args->arg_count != 2 ||
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args->arg_type[0] != INT_RESULT ||
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args->arg_type[1] != INT_RESULT )
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{
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strcpy( message, "Your tile_for_point arguments are bogus!" );
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return 1;
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}
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return 0;
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}
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void tile_for_point_deinit(UDF_INIT *initid)
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{
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return;
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}
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long long tile_for_point(UDF_INIT *initid, UDF_ARGS *args, char *is_null, char *error)
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{
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long long lat = *(long long *)args->args[0];
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long long lon = *(long long *)args->args[1];
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return xy2tile(lon2x(lon / 10000000.0), lat2y(lat / 10000000.0));
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}
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#endif
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#ifdef USE_PGSQL
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#ifdef USE_MYSQL
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#error ONLY one of USE_MYSQL and USE_PGSQL should be defined
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#endif
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#include <postgres.h>
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#include <fmgr.h>
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Datum
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tile_for_point(PG_FUNCTION_ARGS)
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{
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double lat = PG_GETARG_INT32(0) / 10000000.0;
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double lon = PG_GETARG_INT32(1) / 10000000.0;
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PG_RETURN_INT64(xy2tile(lon2x(lon), lat2y(lat)));
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}
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PG_FUNCTION_INFO_V1(tile_for_point);
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/*
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* To bind this into PGSQL, try something like:
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*
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* CREATE FUNCTION tile_for_point(int4, int4) RETURNS int8
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* AS '/path/to/rails-port/db/functions/libpgosm', 'tile_for_point'
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* LANGUAGE C STRICT;
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*
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* (without all the *s)
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*/
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#endif
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