Fix line endings

[flightgear.git] / src / Scenery / scenery.hxx

diff --git a/src/Scenery/scenery.hxx b/src/Scenery/scenery.hxx
index d96660ceec006e711508093d961c0c4c89553286..2042085ca728596b3d269ca39dcff927acba8c2c 100644 (file)
--- a/src/Scenery/scenery.hxx
+++ b/src/Scenery/scenery.hxx
@@ -36,12 +36,13 @@
 #include <simgear/compiler.h>
 #include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/point3d.hxx>
+#include <simgear/scene/model/placementtrans.hxx>
+#include <simgear/structure/ssgSharedPtr.hxx>
 
 SG_USING_STD(list);
 
 class ssgRoot;
 class ssgBranch;
-class ssgPlacementTransform;
 
 
 // Define a structure containing global scenery parameters
@@ -52,32 +53,22 @@ class FGScenery : public SGSubsystem {
     // next center of current scenery chunk
     Point3D next_center;
 
+    // FIXME this should be a views property
     // angle of sun relative to current local horizontal
     double sun_angle;
 
-    // elevation of terrain at our current lat/lon (based on the
-    // actual drawn polygons)
-    double cur_elev;
-
-    // the distance (radius) from the center of the earth to the
-    // current scenery elevation point
-    double cur_radius;
-
-    // unit normal at point used to determine current elevation
-    sgdVec3 cur_normal;
-
     // SSG scene graph
-    ssgRoot *scene_graph;
-    ssgBranch *terrain_branch;
-    ssgRoot *gnd_lights_root;
-    ssgRoot *vasi_lights_root;
-    ssgRoot *rwy_lights_root;
-    ssgRoot *taxi_lights_root;
-    ssgBranch *models_branch;
-    ssgBranch *aircraft_branch;
+    ssgSharedPtr<ssgRoot> scene_graph;
+    ssgSharedPtr<ssgBranch> terrain_branch;
+    ssgSharedPtr<ssgRoot> gnd_lights_root;
+    ssgSharedPtr<ssgRoot> vasi_lights_root;
+    ssgSharedPtr<ssgRoot> rwy_lights_root;
+    ssgSharedPtr<ssgRoot> taxi_lights_root;
+    ssgSharedPtr<ssgBranch> models_branch;
+    ssgSharedPtr<ssgBranch> aircraft_branch;
 
     // list of all placement transform, used to move the scenery center on the fly.
-    typedef list<ssgPlacementTransform*> placement_list_type;
+    typedef list<ssgSharedPtr<ssgPlacementTransform> > placement_list_type;
     placement_list_type _placement_list;
 
 public:
@@ -91,17 +82,46 @@ public:
     void unbind ();
     void update (double dt);
 
-    inline double get_cur_elev() const { return cur_elev; }
-    inline void set_cur_elev( double e ) { cur_elev = e; }
-
-    inline Point3D get_center() const { return center; }
-    void set_center( Point3D p );
-
-    inline Point3D get_next_center() const { return next_center; }
-    inline void set_next_center( Point3D p ) { next_center = p; }
-
-    inline void set_cur_radius( double r ) { cur_radius = r; }
-    inline void set_cur_normal( sgdVec3 n ) { sgdCopyVec3( cur_normal, n ); }
+    /// Compute the elevation of the scenery at geodetic latitude lat,
+    /// geodetic longitude lon and not higher than max_alt.
+    /// If the exact flag is set to true, the scenery center is moved to
+    /// gain a higher accuracy of that query. The center is restored past
+    /// that to the original value.
+    /// The altitude hit is returned in the alt argument.
+    /// The method returns true if the scenery is available for the given
+    /// lat/lon pair. If there is no scenery for that point, the altitude
+    /// value is undefined. 
+    /// All values are meant to be in meters or degrees.
+    bool get_elevation_m(double lat, double lon, double max_alt,
+                         double& alt, bool exact = false);
+
+    /// Compute the elevation of the scenery beow the cartesian point pos.
+    /// you the returned scenery altitude is not higher than the position
+    /// pos plus an ofset given with max_altoff.
+    /// If the exact flag is set to true, the scenery center is moved to
+    /// gain a higher accuracy of that query. The center is restored past
+    /// that to the original value.
+    /// The altitude hit is returned in the alt argument.
+    /// The method returns true if the scenery is available for the given
+    /// lat/lon pair. If there is no scenery for that point, the altitude
+    /// value is undefined.
+    /// All values are meant to be in meters.
+    bool get_cart_elevation_m(const sgdVec3& pos, double max_altoff,
+                              double& radius, bool exact = false);
+
+    /// Compute the nearest intersection point of the line starting from 
+    /// start going in direction dir with the terrain.
+    /// The input and output values should be in cartesian coordinates in the
+    /// usual earth centered wgs84 coordiante system. Units are meters.
+    /// On success, true is returned.
+    bool get_cart_ground_intersection(const sgdVec3& start, const sgdVec3& dir,
+                                      sgdVec3& nearestHit, bool exact = false);
+
+    inline const Point3D& get_center() const { return center; }
+    void set_center( const Point3D& p );
+
+    inline const Point3D& get_next_center() const { return next_center; }
+    inline void set_next_center( const Point3D& p ) { next_center = p; }
 
     inline ssgRoot *get_scene_graph () const { return scene_graph; }
     inline void set_scene_graph (ssgRoot * s) { scene_graph = s; }