From: jmt Date: Wed, 10 Jun 2009 12:42:44 +0000 (+0000) Subject: Extend SGWaypoint with track and speed data, and compute tracks with the X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=6d1d3173fef50d38244a652543dab3e275193533;p=simgear.git Extend SGWaypoint with track and speed data, and compute tracks with the distance in SGRoute. --- diff --git a/simgear/route/route.cxx b/simgear/route/route.cxx index b3b0dfb7..7a1a6c08 100644 --- a/simgear/route/route.cxx +++ b/simgear/route/route.cxx @@ -42,19 +42,21 @@ SGRoute::~SGRoute() { } /** Update the length of the leg ending at waypoint index */ -void SGRoute::update_distance(int index) +void SGRoute::update_distance_and_track(int index) { - SGWayPoint& curr = route[ index ]; - double course, dist; + SGWayPoint& curr = route[ index ]; + double course, dist; - if ( index == 0 ) { - dist = 0; - } else { - const SGWayPoint& prev = route[ index - 1 ]; - curr.CourseAndDistance( prev, &course, &dist ); - } + if ( index == 0 ) { + dist = 0; + course = 0.0; + } else { + const SGWayPoint& prev = route[index - 1]; + curr.CourseAndDistance( prev, &course, &dist ); + } - curr.set_distance( dist ); + curr.set_distance(dist); + curr.set_track(course); } /** @@ -69,9 +71,9 @@ void SGRoute::add_waypoint( const SGWayPoint &wp, int n ) { } else { route.insert( route.begin() + n, 1, wp ); // update distance of next leg if not at end of route - update_distance( n + 1 ); + update_distance_and_track( n + 1 ); } - update_distance( n ); + update_distance_and_track( n ); } /** Delete waypoint with index n (last one if n < 0) */ @@ -85,7 +87,7 @@ void SGRoute::delete_waypoint( int n ) { route.erase( route.begin() + n ); // update distance of next leg if not at end of route if ( n < size - 1 ) - update_distance( n ); + update_distance_and_track( n ); } double SGRoute::total_distance() const { diff --git a/simgear/route/route.hxx b/simgear/route/route.hxx index 5307acf4..6c5c5c87 100644 --- a/simgear/route/route.hxx +++ b/simgear/route/route.hxx @@ -52,7 +52,7 @@ private: route_list route; int current_wp; - void update_distance(int index); + void update_distance_and_track(int index); public: @@ -102,6 +102,22 @@ public: return SGWayPoint( 0.0, 0.0, 0.0, SGWayPoint::WGS84, "invalid" ); } } + + inline SGWayPoint get_previous() const { + if ( (current_wp > 0) && (current_wp < (int)route.size()) ) { + return route[current_wp - 1]; + } else { + return SGWayPoint( 0.0, 0.0, 0.0, SGWayPoint::WGS84, "invalid" ); + } + } + + inline SGWayPoint get_next() const { + if ( (current_wp + 1) < (int)route.size() ) { + return route[current_wp+1]; + } else { + return SGWayPoint( 0.0, 0.0, 0.0, SGWayPoint::WGS84, "invalid" ); + } + } /** * Set the current waypoint diff --git a/simgear/route/waypoint.cxx b/simgear/route/waypoint.cxx index 189bc59b..f9a9ab0b 100644 --- a/simgear/route/waypoint.cxx +++ b/simgear/route/waypoint.cxx @@ -33,21 +33,23 @@ using std::string; // Constructor SGWayPoint::SGWayPoint( const double lon, const double lat, const double alt, - const modetype m, const string& s, const string& n ) : - mode(m), + const modetype, const string& s, const string& n ) : pos(SGGeod::fromDegM(lon, lat, alt)), - distance(0.0), id(s), - name(n) + name(n), + _distance(0.0), + _track(0.0), + _speed(0.0) { } SGWayPoint::SGWayPoint(const SGGeod& geod, const string& s, const string& n ) : - mode(WGS84), pos(geod), - distance(0.0), id(s), - name(n) + name(n), + _distance(0.0), + _track(0.0), + _speed(0.0) { } @@ -56,15 +58,8 @@ SGWayPoint::~SGWayPoint() { } void SGWayPoint::CourseAndDistance(const SGGeod& cur, double& course, double& dist ) const { - if ( mode == WGS84 ) { - double reverse; - SGGeodesy::inverse(cur, pos, course, reverse, dist); - } else if ( mode == SPHERICAL ) { - Point3D currentPoint(cur.getLongitudeRad(), cur.getLatitudeRad(), 0.0 ); - Point3D targetPoint(pos.getLongitudeRad(), pos.getLatitudeRad(), 0.0 ); - calc_gc_course_dist( currentPoint, targetPoint, &course, &dist ); - course = 360.0 - course * SGD_RADIANS_TO_DEGREES; - } + double reverse; + SGGeodesy::inverse(cur, pos, course, reverse, dist); } // Calculate course and distances. For WGS84 and SPHERICAL diff --git a/simgear/route/waypoint.hxx b/simgear/route/waypoint.hxx index dbd831d3..29edf739 100644 --- a/simgear/route/waypoint.hxx +++ b/simgear/route/waypoint.hxx @@ -27,12 +27,6 @@ #ifndef _WAYPOINT_HXX #define _WAYPOINT_HXX - -#ifndef __cplusplus -# error This library requires C++ -#endif - - #include #include @@ -61,19 +55,18 @@ public: */ enum modetype { WGS84 = 0, - SPHERICAL = 1, }; private: - - modetype mode; - SGGeod pos; - double distance; - std::string id; std::string name; - + + // route data associated with the waypoint + double _distance; + double _track; + double _speed; + public: /** @@ -147,14 +140,20 @@ public: * is for your convenience only. * @return waypoint distance holder (what ever the user has stashed here) */ - inline double get_distance() const { return distance; } + inline double get_distance() const { return _distance; } /** * Set the waypoint distance value to a value of our choice. * @param d distance */ - inline void set_distance( double d ) { distance = d; } + inline void set_distance( double d ) { _distance = d; } + + inline double get_track() const { return _track; } + inline void set_track(double t) { _track = t; } + inline double get_speed() const { return _speed; } + inline void set_speed(double v) { _speed = v; } + /** @return waypoint id */ inline const std::string& get_id() const { return id; }