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new file: A-Better-APRS-Packet-Demodulator-Part-1-1200-baud.pdf new file: A-Better-APRS-Packet-Demodulator-Part-2-9600-baud.pdf modified: APRStt-Implementation-Notes.pdf modified: CHANGES.txt new file: Makefile modified: Makefile.linux modified: Makefile.win deleted: Quick-Start-Guide-Windows.pdf modified: Raspberry-Pi-APRS-Tracker.pdf modified: Raspberry-Pi-APRS.pdf modified: User-Guide.pdf modified: aclients.c modified: aprs_tt.c modified: aprs_tt.h modified: atest.c modified: audio.c modified: audio.h modified: audio_win.c modified: ax25_pad.c modified: ax25_pad.h modified: beacon.c modified: beacon.h modified: config.c modified: config.h modified: decode_aprs.c modified: decode_aprs.h modified: demod.c modified: demod.h modified: demod_9600.c modified: demod_9600.h modified: demod_afsk.c modified: digipeater.c modified: digipeater.h modified: direwolf.c modified: direwolf.conf deleted: direwolf.desktop modified: direwolf.h new file: direwolf.spec new file: direwolf.txt new file: dlq.c new file: dlq.h modified: dsp.c new file: dtime_now.c new file: dtime_now.h modified: dtmf.c modified: dtmf.h new file: dwespeak.bat new file: dwespeak.sh modified: fsk_demod_state.h modified: gen_packets.c modified: gen_tone.c new file: geotranz/README-FIRST.txt new file: geotranz/error_string.c new file: geotranz/error_string.h new file: geotranz/mgrs.c new file: geotranz/mgrs.h new file: geotranz/polarst.c new file: geotranz/polarst.h new file: geotranz/readme.txt new file: geotranz/releasenotes.txt new file: geotranz/tranmerc.c new file: geotranz/tranmerc.h new file: geotranz/ups.c new file: geotranz/ups.h new file: geotranz/usng.c new file: geotranz/usng.h new file: geotranz/utm.c new file: geotranz/utm.h modified: hdlc_rec.c modified: hdlc_rec.h modified: hdlc_rec2.c modified: hdlc_rec2.h modified: hdlc_send.c modified: igate.c modified: igate.h modified: kiss_frame.c modified: kiss_frame.h modified: kissnet.c modified: latlong.c modified: latlong.h modified: ll2utm.c modified: log.c modified: log.h new file: man1/aclients.1 new file: man1/atest.1 new file: man1/decode_aprs.1 new file: man1/direwolf.1 new file: man1/gen_packets.1 new file: man1/ll2utm.1 new file: man1/log2gpx.1 new file: man1/text2tt.1 new file: man1/tt2text.1 new file: man1/utm2ll.1 modified: multi_modem.c modified: multi_modem.h new file: pfilter.c new file: pfilter.h modified: ptt.c modified: ptt.h deleted: pttest.c modified: rdq.c new file: recv.c new file: recv.h modified: redecode.c modified: redecode.h modified: rrbb.c modified: rrbb.h modified: server.c modified: server.h modified: telemetry.c modified: telemetry.h modified: textcolor.c modified: textcolor.h modified: tocalls.txt modified: tq.c modified: tq.h modified: tt_text.c modified: tt_text.h modified: tt_user.c modified: tt_user.h new file: ttcalc.c deleted: udp_test.c deleted: utm/LatLong-UTMconversion.c deleted: utm/LatLong-UTMconversion.h deleted: utm/README.txt deleted: utm/SwissGrid.cpp deleted: utm/UTMConversions.cpp deleted: utm/constants.h modified: utm2ll.c modified: version.h new file: xid.c modified: xmit.c modified: xmit.h
210 lines
8.6 KiB
C
210 lines
8.6 KiB
C
#ifndef TRANMERC_H
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#define TRANMERC_H
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/***************************************************************************/
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/* RSC IDENTIFIER: TRANSVERSE MERCATOR
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*
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* ABSTRACT
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*
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* This component provides conversions between Geodetic coordinates
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* (latitude and longitude) and Transverse Mercator projection coordinates
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* (easting and northing).
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*
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* ERROR HANDLING
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*
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* This component checks parameters for valid values. If an invalid value
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* is found the error code is combined with the current error code using
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* the bitwise or. This combining allows multiple error codes to be
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* returned. The possible error codes are:
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*
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* TRANMERC_NO_ERROR : No errors occurred in function
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* TRANMERC_LAT_ERROR : Latitude outside of valid range
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* (-90 to 90 degrees)
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* TRANMERC_LON_ERROR : Longitude outside of valid range
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* (-180 to 360 degrees, and within
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* +/-90 of Central Meridian)
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* TRANMERC_EASTING_ERROR : Easting outside of valid range
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* (depending on ellipsoid and
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* projection parameters)
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* TRANMERC_NORTHING_ERROR : Northing outside of valid range
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* (depending on ellipsoid and
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* projection parameters)
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* TRANMERC_ORIGIN_LAT_ERROR : Origin latitude outside of valid range
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* (-90 to 90 degrees)
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* TRANMERC_CENT_MER_ERROR : Central meridian outside of valid range
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* (-180 to 360 degrees)
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* TRANMERC_A_ERROR : Semi-major axis less than or equal to zero
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* TRANMERC_INV_F_ERROR : Inverse flattening outside of valid range
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* (250 to 350)
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* TRANMERC_SCALE_FACTOR_ERROR : Scale factor outside of valid
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* range (0.3 to 3.0)
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* TM_LON_WARNING : Distortion will result if longitude is more
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* than 9 degrees from the Central Meridian
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*
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* REUSE NOTES
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*
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* TRANSVERSE MERCATOR is intended for reuse by any application that
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* performs a Transverse Mercator projection or its inverse.
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*
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* REFERENCES
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*
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* Further information on TRANSVERSE MERCATOR can be found in the
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* Reuse Manual.
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*
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* TRANSVERSE MERCATOR originated from :
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* U.S. Army Topographic Engineering Center
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* Geospatial Information Division
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* 7701 Telegraph Road
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* Alexandria, VA 22310-3864
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*
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* LICENSES
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*
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* None apply to this component.
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*
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* RESTRICTIONS
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*
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* TRANSVERSE MERCATOR has no restrictions.
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*
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* ENVIRONMENT
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*
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* TRANSVERSE MERCATOR was tested and certified in the following
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* environments:
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*
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* 1. Solaris 2.5 with GCC, version 2.8.1
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* 2. Windows 95 with MS Visual C++, version 6
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*
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* MODIFICATIONS
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*
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* Date Description
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* ---- -----------
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* 10-02-97 Original Code
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* 03-02-97 Re-engineered Code
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*
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*/
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/***************************************************************************/
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/*
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* DEFINES
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*/
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#define TRANMERC_NO_ERROR 0x0000
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#define TRANMERC_LAT_ERROR 0x0001
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#define TRANMERC_LON_ERROR 0x0002
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#define TRANMERC_EASTING_ERROR 0x0004
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#define TRANMERC_NORTHING_ERROR 0x0008
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#define TRANMERC_ORIGIN_LAT_ERROR 0x0010
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#define TRANMERC_CENT_MER_ERROR 0x0020
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#define TRANMERC_A_ERROR 0x0040
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#define TRANMERC_INV_F_ERROR 0x0080
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#define TRANMERC_SCALE_FACTOR_ERROR 0x0100
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#define TRANMERC_LON_WARNING 0x0200
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/***************************************************************************/
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/*
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* FUNCTION PROTOTYPES
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* for TRANMERC.C
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*/
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/* ensure proper linkage to c++ programs */
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#ifdef __cplusplus
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extern "C" {
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#endif
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long Set_Transverse_Mercator_Parameters(double a,
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double f,
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double Origin_Latitude,
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double Central_Meridian,
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double False_Easting,
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double False_Northing,
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double Scale_Factor);
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/*
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* The function Set_Tranverse_Mercator_Parameters receives the ellipsoid
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* parameters and Tranverse Mercator projection parameters as inputs, and
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* sets the corresponding state variables. If any errors occur, the error
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* code(s) are returned by the function, otherwise TRANMERC_NO_ERROR is
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* returned.
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*
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* a : Semi-major axis of ellipsoid, in meters (input)
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* f : Flattening of ellipsoid (input)
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* Origin_Latitude : Latitude in radians at the origin of the (input)
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* projection
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* Central_Meridian : Longitude in radians at the center of the (input)
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* projection
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* False_Easting : Easting/X at the center of the projection (input)
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* False_Northing : Northing/Y at the center of the projection (input)
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* Scale_Factor : Projection scale factor (input)
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*/
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void Get_Transverse_Mercator_Parameters(double *a,
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double *f,
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double *Origin_Latitude,
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double *Central_Meridian,
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double *False_Easting,
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double *False_Northing,
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double *Scale_Factor);
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/*
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* The function Get_Transverse_Mercator_Parameters returns the current
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* ellipsoid and Transverse Mercator projection parameters.
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*
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* a : Semi-major axis of ellipsoid, in meters (output)
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* f : Flattening of ellipsoid (output)
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* Origin_Latitude : Latitude in radians at the origin of the (output)
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* projection
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* Central_Meridian : Longitude in radians at the center of the (output)
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* projection
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* False_Easting : Easting/X at the center of the projection (output)
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* False_Northing : Northing/Y at the center of the projection (output)
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* Scale_Factor : Projection scale factor (output)
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*/
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long Convert_Geodetic_To_Transverse_Mercator (double Latitude,
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double Longitude,
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double *Easting,
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double *Northing);
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/*
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* The function Convert_Geodetic_To_Transverse_Mercator converts geodetic
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* (latitude and longitude) coordinates to Transverse Mercator projection
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* (easting and northing) coordinates, according to the current ellipsoid
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* and Transverse Mercator projection coordinates. If any errors occur, the
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* error code(s) are returned by the function, otherwise TRANMERC_NO_ERROR is
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* returned.
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*
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* Latitude : Latitude in radians (input)
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* Longitude : Longitude in radians (input)
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* Easting : Easting/X in meters (output)
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* Northing : Northing/Y in meters (output)
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*/
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long Convert_Transverse_Mercator_To_Geodetic (double Easting,
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double Northing,
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double *Latitude,
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double *Longitude);
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/*
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* The function Convert_Transverse_Mercator_To_Geodetic converts Transverse
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* Mercator projection (easting and northing) coordinates to geodetic
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* (latitude and longitude) coordinates, according to the current ellipsoid
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* and Transverse Mercator projection parameters. If any errors occur, the
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* error code(s) are returned by the function, otherwise TRANMERC_NO_ERROR is
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* returned.
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*
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* Easting : Easting/X in meters (input)
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* Northing : Northing/Y in meters (input)
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* Latitude : Latitude in radians (output)
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* Longitude : Longitude in radians (output)
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* TRANMERC_H */
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