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Code Issues Releases Activity

gpsdisplay: correct lat/lon minute calculation for 3/4 of earth

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The computation of the minutes portion of the lat/lon was
wrong for any negative values.  lat-deg was effectively
doubling the whole degree part rather than removing it for
any negative whole degree part so you would get huge whole
minute parts.

git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1542 ebee16cc-31ac-478f-84a7-5cbb03baadba
This commit is contained in:
stac 2010-09-05 23:10:36 +00:00 committed by stac
parent 95595664c3
commit 44b41c32d2
1 changed files with 4 additions and 4 deletions
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8
ground/src/plugins/gpsdisplay/gpsdisplaywidget.cpp
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@ -113,8 +113,8 @@ void GpsDisplayWidget::setPosition(double lat, double lon, double alt)
{ {
//lat *= 1E-7; //lat *= 1E-7;
//lon *= 1E-7; //lon *= 1E-7;
double deg = (lat>0) ? floor(lat):ceil(lat); double deg = floor(fabs(lat));
double min = fabs(lat-deg)*60; double min = (fabs(lat)-deg)*60;
QString str1; QString str1;
str1.sprintf("%.0f%c%.3f' ", deg,0x00b0, min); str1.sprintf("%.0f%c%.3f' ", deg,0x00b0, min);
if (lat>0) if (lat>0)
@ -122,8 +122,8 @@ void GpsDisplayWidget::setPosition(double lat, double lon, double alt)
else else
str1.append("S"); str1.append("S");
coord_value->setText(str1); coord_value->setText(str1);
deg = floor(fabs(lon)); // ABS takes an int. deg = floor(fabs(lon));
min = fabs(lon-deg)*60; min = (fabs(lon)-deg)*60;
QString str2; QString str2;
str2.sprintf("%.0f%c%.3f' ", deg,0x00b0, min); str2.sprintf("%.0f%c%.3f' ", deg,0x00b0, min);
if (lon>0) if (lon>0)