Redesign of the latitude and longitude formatting for the HUD.
This follows from http://thread.gmane.org/gmane.games.flightgear.devel/78650 and resolves the sign bug https://sourceforge.net/p/flightgear/codetickets/1778/ . Combined with a matching change to FGData, this changes the HUD formats from the current set of 3 (note that the text in brackets is not shown in the HUD preferences PUI dialog, but is show here for reference): 0) Decimal degrees (37.618890N -122.375000W) 1) Degrees, minutes (37*37.133N -122*22.500W) 2) Degrees, minutes, seconds (37*37 08.0 N -122*22 30.0 W) to (here the text in brackets will be shown in the PUI dialog): 0) DDD format (37.618890N 122.375000W) 1) DMM format (37*37.133'N 122*22.500'W) 2) DMS format (37*37'08.0"N 122*22'30.0"W) 3) Signed DDD format (37.618890 -122.375000) 4) Signed DMM format (37*37.133' -122*22.500') 5) Signed DMS format (37*37'08.0" -122*22'30.0") 6) Zero padded DDD (51.477500N 000.461389W) 7) Zero padded DMM (51*28.650'N 000*27.683'W) 8) Zero padded DMS (51*28'39.0"N 000*27'41.0"W) 9) Trinity House Navigation (51* 28'.650N 000* 27'.683W)
This commit is contained in:
Edward d'Auvergne
Stuart Buchanan
parent
f749953493
commit
c889198d09
1 changed files with 137 additions and 62 deletions
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@ -366,47 +366,148 @@ SGConstPropertyNode_ptr FGProperties::_longDeg;
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SGConstPropertyNode_ptr FGProperties::_latDeg;
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SGConstPropertyNode_ptr FGProperties::_lonLatformat;
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/*
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* Format the latitude and longitude floats into a character array using a variety of coordinate formats.
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*/
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static void
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formatLatLongString (double deg, int format, char *buf, char c) {
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double min, sec;
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int sign = deg < 0.0 ? -1 : 1;
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deg = fabs(deg);
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if (format == 0) {
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// d.dddddd' (DDD format).
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snprintf(buf, 32, "%3.6f%c", deg, c);
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} else if (format == 1) {
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// d mm.mmm' (DMM format) -- uses a round-off factor tailored to the
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// required precision of the minutes field (three decimal places),
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// preventing minute values of 60.
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min = (deg - int(deg)) * 60.0;
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if (min >= 59.9995) {
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min -= 60.0;
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deg += 1.0;
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}
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snprintf(buf, 32, "%d*%06.3f'%c", int(deg), fabs(min), c);
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} else if (format == 2) {
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// d mm'ss.s" (DMS format) -- uses a round-off factor tailored to the
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// required precision of the seconds field (one decimal place),
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// preventing second values of 60.
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min = (deg - int(deg)) * 60.0;
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sec = (min - int(min)) * 60.0;
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if (sec >= 59.95) {
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sec -= 60.0;
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min += 1.0;
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if (min >= 60.0) {
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min -= 60.0;
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deg += 1.0;
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}
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}
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snprintf(buf, 32, "%d*%02d'%04.1f\"%c", int(deg), int(min), fabs(sec), c);
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} else if (format == 3) {
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// d.dddddd' (signed DDD format).
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snprintf(buf, 32, "%3.6f", sign*deg);
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} else if (format == 4) {
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// d mm.mmm' (signed DMM format).
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min = (deg - int(deg)) * 60.0;
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if (min >= 59.9995) {
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min -= 60.0;
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deg += 1.0;
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}
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if (sign == 1) {
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snprintf(buf, 32, "%d*%06.3f'", int(deg), fabs(min));
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} else {
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snprintf(buf, 32, "-%d*%06.3f'", int(deg), fabs(min));
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}
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} else if (format == 5) {
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// d mm'ss.s" (signed DMS format).
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min = (deg - int(deg)) * 60.0;
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sec = (min - int(min)) * 60.0;
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if (sec >= 59.95) {
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sec -= 60.0;
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min += 1.0;
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if (min >= 60.0) {
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min -= 60.0;
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deg += 1.0;
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}
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}
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if (sign == 1) {
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snprintf(buf, 32, "%d*%02d'%04.1f\"", int(deg), int(min), fabs(sec));
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} else {
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snprintf(buf, 32, "-%d*%02d'%04.1f\"", int(deg), int(min), fabs(sec));
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}
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} else if (format == 6) {
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// dd.dddddd X, ddd.dddddd X (zero padded DDD format).
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if (c == 'N' || c == 'S') {
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snprintf(buf, 32, "%09.6f%c", deg, c);
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} else {
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snprintf(buf, 32, "%010.6f%c", deg, c);
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}
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} else if (format == 7) {
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// dd mm.mmm' X, ddd mm.mmm' X (zero padded DMM format).
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min = (deg - int(deg)) * 60.0;
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if (min >= 59.9995) {
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min -= 60.0;
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deg += 1.0;
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}
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if (c == 'N' || c == 'S') {
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snprintf(buf, 32, "%02d*%06.3f'%c", int(deg), fabs(min), c);
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} else {
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snprintf(buf, 32, "%03d*%06.3f'%c", int(deg), fabs(min), c);
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}
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} else if (format == 8) {
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// dd mm'ss.s" X, dd mm'ss.s" X (zero padded DMS format).
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min = (deg - int(deg)) * 60.0;
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sec = (min - int(min)) * 60.0;
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if (sec >= 59.95) {
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sec -= 60.0;
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min += 1.0;
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if (min >= 60.0) {
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min -= 60.0;
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deg += 1.0;
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}
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}
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if (c == 'N' || c == 'S') {
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snprintf(buf, 32, "%02d*%02d'%04.1f\"%c", int(deg), int(min), fabs(sec), c);
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} else {
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snprintf(buf, 32, "%03d*%02d'%04.1f\"%c", int(deg), int(min), fabs(sec), c);
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}
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} else if (format == 9) {
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// dd* mm'.mmm X, ddd* mm'.mmm X (Trinity House Navigation standard).
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min = (deg - int(deg)) * 60.0;
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if (min >= 59.9995) {
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min -= 60.0;
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deg += 1.0;
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}
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if (c == 'N' || c == 'S') {
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snprintf(buf, 32, "%02d* %02d'.%03d%c", int(deg), int(min), int(round((min-int(min))*1000)), c);
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} else {
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snprintf(buf, 32, "%03d* %02d'.%03d%c", int(deg), int(min), int(round((min-int(min))*1000)), c);
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}
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} else {
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// Empty the buffer for all invalid formats.
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buf[0] = '\0';
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}
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}
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const char *
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FGProperties::getLongitudeString ()
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{
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static char buf[32];
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double d = _longDeg->getDoubleValue();
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int format = _lonLatformat->getIntValue();
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char c = d < 0.0 ? 'W' : 'E';
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d = fabs(d);
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if (format == 0) {
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snprintf(buf, 32, "%3.6f%c", d, c);
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} else if (format == 1) {
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// dd mm.mmm' (DMM-Format) -- uses a round-off factor tailored to the
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// required precision of the minutes field (three decimal places),
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// preventing minute values of 60.
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double min = (d - int(d)) * 60.0;
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if (min >= 59.9995) {
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min -= 60.0;
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d += 1.0;
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}
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snprintf(buf, 32, "%d*%06.3f%c", int(d), fabs(min), c);
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} else {
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// mm'ss.s'' (DMS-Format) -- uses a round-off factor tailored to the
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// required precision of the seconds field (one decimal place),
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// preventing second values of 60.
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double min = (d - int(d)) * 60.0;
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double sec = (min - int(min)) * 60.0;
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if (sec >= 59.95) {
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sec -= 60.0;
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min += 1.0;
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if (min >= 60.0) {
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min -= 60.0;
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d += 1.0;
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}
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}
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snprintf(buf, 32, "%d*%02d %04.1f%c", int(d),
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int(min), fabs(sec), c);
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}
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buf[31] = '\0';
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formatLatLongString(d, format, buf, c);
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return buf;
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}
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@ -416,35 +517,9 @@ FGProperties::getLatitudeString ()
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static char buf[32];
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double d = _latDeg->getDoubleValue();
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int format = _lonLatformat->getIntValue();
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char c = d < 0.0 ? 'S' : 'N';
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d = fabs(d);
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if (format == 0) {
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snprintf(buf, 32, "%3.6f%c", d, c);
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} else if (format == 1) {
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double min = (d - int(d)) * 60.0;
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if (min >= 59.9995) {
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min -= 60.0;
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d += 1.0;
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}
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snprintf(buf, 32, "%d*%06.3f%c", int(d), fabs(min), c);
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} else {
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double min = (d - int(d)) * 60.0;
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double sec = (min - int(min)) * 60.0;
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if (sec >= 59.95) {
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sec -= 60.0;
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min += 1.0;
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if (min >= 60.0) {
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min -= 60.0;
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d += 1.0;
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}
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}
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snprintf(buf, 32, "%d*%02d %04.1f%c", int(d),
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int(min), fabs(sec), c);
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}
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buf[31] = '\0';
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formatLatLongString(d, format, buf, c);
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return buf;
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}
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