/**
* Retrieve coordinate value from object given coordinate index
* @param d WaypointEnvelope object
* @param k index of coordinate
*
* @return Coordinate value
*/
int operator() ( const TracePoint &d, const unsigned k) const {
switch(k) {
case 0:
return d.get_flatLocation().Longitude;
case 1:
return d.get_flatLocation().Latitude;
};
return 0;
};
/**
* Calculate approximate squared (flat projected) distance between this point
* and another
*
* @param tp Point to calculate distance to
*
* @return Approximate squared distance
*/
gcc_pure
unsigned approx_sq_dist(const TracePoint& tp) const {
return dsqr(get_flatLocation().Longitude-tp.get_flatLocation().Longitude)+
dsqr(get_flatLocation().Latitude-tp.get_flatLocation().Latitude);
}
