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/**
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* Navit, a modular navigation system.
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* Copyright (C) 2005-2008 Navit Team
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef NAVIT_COORD_H
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#define NAVIT_COORD_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdio.h>
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#include "config.h"
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#include "projection.h"
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#define coord_is_equal(a,b) ((a).x==(b).x && (a).y==(b).y)
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/*! A integer mercator coordinate */
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struct coord {
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int x; /*!< X-Value */
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int y; /*!< Y-Value */
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};
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/*! A integer mercator coordinate carrying its projection */
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struct pcoord {
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enum projection pro;
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int x; /*!< X-Value */
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int y; /*!< Y-Value */
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};
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struct coord_rect {
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struct coord lu;
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struct coord rl;
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};
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#ifdef AVOID_FLOAT
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/**
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* On platforms where we are trying to avoid floats, sometimes we can't.
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* It is better on these platforms to use single precision floating points
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* over double percision ones since performance is much better.
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*/
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typedef float navit_float;
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#define navit_sin(x) sinf(x)
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#define navit_cos(x) cosf(x)
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#define navit_tan(x) tanf(x)
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#define navit_atan(x) atanf(x)
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#define navit_acos(x) acosf(x)
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#define navit_asin(x) asinf(x)
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#define navit_sqrt(x) sqrtf(x)
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#else
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typedef double navit_float;
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#define navit_sin(x) sin(x)
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#define navit_cos(x) cos(x)
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#define navit_tan(x) tan(x)
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#define navit_atan(x) atan(x)
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#define navit_acos(x) acos(x)
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#define navit_asin(x) asin(x)
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#define navit_sqrt(x) sqrt(x)
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#endif
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//! A double mercator coordinate
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struct coord_d {
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double x; /*!< X-Value */
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double y; /*!< Y-Value */
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};
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//! A WGS84 coordinate
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struct coord_geo {
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navit_float lng; /*!< Longitude */
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navit_float lat; /*!< Latitude */
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};
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//! A cartesian coordinate
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struct coord_geo_cart {
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navit_float x; /*!< X-Value */
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navit_float y; /*!< Y-Value */
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navit_float z; /*!< Z-Value */
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};
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/**
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* An enumeration of formats for printing geographic coordinates in.
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*
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*/
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enum coord_format
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{
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/**
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* Degrees with decimal places.
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* Ie 20.5000 N 110.5000 E
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*/
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DEGREES_DECIMAL,
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/**
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* Degrees and minutes.
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* ie 20 30.00 N 110 30.00 E
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*/
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DEGREES_MINUTES,
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/**
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* Degrees, minutes and seconds.
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* ie 20 30 30.00 N 110 30 30 E
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*/
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DEGREES_MINUTES_SECONDS
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};
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enum projection;
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struct attr;
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struct coord * coord_get(unsigned char **p);
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struct coord * coord_new(int x, int y);
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struct coord * coord_new_from_attrs(struct attr *parent, struct attr **attrs);
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void coord_destroy(struct coord *c);
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int coord_parse(const char *c_str, enum projection pro, struct coord *c_ret);
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int pcoord_parse(const char *c_str, enum projection pro, struct pcoord *c_ret);
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void coord_print(enum projection pro, struct coord *c, FILE *out);
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struct coord_rect * coord_rect_new(struct coord *lu, struct coord *rl);
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void coord_rect_destroy(struct coord_rect *r);
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int coord_rect_overlap(struct coord_rect *r1, struct coord_rect *r2);
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int coord_rect_contains(struct coord_rect *r, struct coord *c);
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void coord_rect_extend(struct coord_rect *r, struct coord *c);
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void coord_format(float lat,float lng, enum coord_format, char * buffer, int size);
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/* prototypes */
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enum coord_format;
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enum projection;
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struct attr;
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struct coord;
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struct coord_rect;
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struct pcoord;
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struct coord *coord_get(unsigned char **p);
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struct coord *coord_new(int x, int y);
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struct coord *coord_new_from_attrs(struct attr *parent, struct attr **attrs);
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void coord_destroy(struct coord *c);
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struct coord_rect *coord_rect_new(struct coord *lu, struct coord *rl);
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void coord_rect_destroy(struct coord_rect *r);
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int coord_rect_overlap(struct coord_rect *r1, struct coord_rect *r2);
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int coord_rect_contains(struct coord_rect *r, struct coord *c);
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void coord_rect_extend(struct coord_rect *r, struct coord *c);
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int coord_parse(const char *c_str, enum projection pro, struct coord *c_ret);
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int pcoord_parse(const char *c_str, enum projection pro, struct pcoord *pc_ret);
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void coord_print(enum projection pro, struct coord *c, FILE *out);
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void coord_format(float lat, float lng, enum coord_format fmt, char *buffer, int size);
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unsigned int coord_hash(const void *key);
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int coord_equal(const void *a, const void *b);
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/* end of prototypes */
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#ifdef __cplusplus
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}
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#endif
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#endif
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