Christian Mayer writes:
>
>Norman Vine wrote:
>>
>> Well if you just wanted to drift with the wind and be 'cheesy'
>> you could use the simgear direct geodetic solver to get a new lat lon
>> based on current position speed and course
>
>The drifting is moddeled correctly and returnes me a "displacement" in
>meters in the north-south and east-west axis (so it'S easy to convert
>that to a direction and a distance). So all I need is a function that
>takes the current position in WGS84 and my displacement and
>returns me a new WGS84 position.
Exactly
* @param alt (in) meters -- current altitude above sea-level
* @param lat1 (in) degrees - current latitude
* @param lon1 (in) degrees - current longitude
* @param az1 (in) degrees - course in degrees
* @param s (in) distance in meters - distance in degrees
* @param lat2 (out) degrees - new latitude
* @param lon2 (out) degrees - new longitude
* @param az2 (out) return course in degrees - course back to starting
location
*/
int geo_direct_wgs_84 ( double alt, double lat1, double lon1, double az1,
double s, double *lat2, double *lon2, double *az2 );
Need anything else ??
Norman
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