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| author | Mattias Andrée <m@maandree.se> | 2024-10-20 20:41:56 +0200 |
|---|---|---|
| committer | Mattias Andrée <m@maandree.se> | 2024-10-20 20:41:56 +0200 |
| commit | d66bf4fe6ff287dceb9b0083244c245288f9865b (patch) | |
| tree | 7840c18e30bd32533c4fd4ca6dfd72e28103ede0 /libtellurian_end_point.3 | |
| parent | Fourth commit (diff) | |
| download | libtellurian-master.tar.gz libtellurian-master.tar.bz2 libtellurian-master.tar.xz | |
Signed-off-by: Mattias Andrée <m@maandree.se>
Diffstat (limited to '')
| -rw-r--r-- | libtellurian_end_point.3 | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/libtellurian_end_point.3 b/libtellurian_end_point.3 index 15fe232..3bf78b2 100644 --- a/libtellurian_end_point.3 +++ b/libtellurian_end_point.3 @@ -8,12 +8,12 @@ libtellurian_end_point \- Calculate travel end-point void libtellurian_end_point(double \fIlatitude1\fP, double \fIlongitude1\fP, double \fIazimuth1\fP, double \fIdistance\fP, - double \fIlatitude2_out\fP, double \fIlongitude2_out\fP, + double *\fIlatitude2_out\fP, double *\fIlongitude2_out\fP, double *\fIazimuth2_out\fP); void libtellurian_end_point_radians(double \fIlatitude1\fP, double \fIlongitude1\fP, double \fIazimuth1\fP, double \fIdistance\fP, - double \fIlatitude2_out\fP, double \fIlongitude2_out\fP, + double *\fIlatitude2_out\fP, double *\fIlongitude2_out\fP, double *\fIazimuth2_out\fP); .fi .PP @@ -38,7 +38,10 @@ The location the traveller will end at will be stored at .RI ( *latitude2_out ", " *longitude2_out ). along the ellipsoid. The azimuth from this -point to the starting point will be stored in +point to continue the on the extended, circular +path (eventually returning to the starting +pointer after having traveled the azimuthal +circumference of the Earth) in .IR *azimuth2_out . .PP However @@ -80,5 +83,21 @@ None. .SH ERRORS None. +.SH NOTES +The (forward) azimuths are defined as the +direction you travelling when you travel +along a great ellipsoid (which is the +shortest distance) from +.RI ( latitude1 ", " longitude1 ) +in the direction specified by +.I azimuth1 +at this point. Hence, +.I *azimuth2_out +will be the direction you would continue +along the great ellipsoid, at +.RI ( *latitude2_out ", " *longitude2_out ), +\m[red]not\m[] the direction for returning to +.RI ( latitude1 ", " longitude1 ). + .SH SEE ALSO .BR libtellurian (7) |