1 // scenery.hxx -- data structures and routines for managing scenery.
3 // Written by Curtis Olson, started May 1997.
5 // Copyright (C) 1997 Curtis L. Olson - http://www.flightgear.org/~curt
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 # error This library requires C++
36 #include <simgear/compiler.h>
37 #include <simgear/structure/subsystem_mgr.hxx>
38 #include <simgear/math/point3d.hxx>
44 class ssgPlacementTransform;
47 // Define a structure containing global scenery parameters
48 class FGScenery : public SGSubsystem {
49 // center of current scenery chunk
52 // next center of current scenery chunk
55 // angle of sun relative to current local horizontal
58 // elevation of terrain at our current lat/lon (based on the
59 // actual drawn polygons)
62 // the distance (radius) from the center of the earth to the
63 // current scenery elevation point
66 // unit normal at point used to determine current elevation
71 ssgBranch *terrain_branch;
72 ssgRoot *gnd_lights_root;
73 ssgRoot *vasi_lights_root;
74 ssgRoot *rwy_lights_root;
75 ssgRoot *taxi_lights_root;
76 ssgBranch *models_branch;
77 ssgBranch *aircraft_branch;
79 // list of all placement transform, used to move the scenery center on the fly.
80 typedef list<ssgPlacementTransform*> placement_list_type;
81 placement_list_type _placement_list;
88 // Implementation of SGSubsystem.
92 void update (double dt);
94 inline double get_cur_elev() const { return cur_elev; }
95 inline void set_cur_elev( double e ) { cur_elev = e; }
97 inline Point3D get_center() const { return center; }
98 void set_center( Point3D p );
100 inline Point3D get_next_center() const { return next_center; }
101 inline void set_next_center( Point3D p ) { next_center = p; }
103 inline void set_cur_radius( double r ) { cur_radius = r; }
104 inline void set_cur_normal( sgdVec3 n ) { sgdCopyVec3( cur_normal, n ); }
106 inline ssgRoot *get_scene_graph () const { return scene_graph; }
107 inline void set_scene_graph (ssgRoot * s) { scene_graph = s; }
109 inline ssgBranch *get_terrain_branch () const { return terrain_branch; }
110 inline void set_terrain_branch (ssgBranch * t) { terrain_branch = t; }
112 inline ssgRoot *get_gnd_lights_root () const {
113 return gnd_lights_root;
115 inline void set_gnd_lights_root (ssgRoot *r) {
119 inline ssgRoot *get_vasi_lights_root () const {
120 return vasi_lights_root;
122 inline void set_vasi_lights_root (ssgRoot *r) {
123 vasi_lights_root = r;
126 inline ssgRoot *get_rwy_lights_root () const {
127 return rwy_lights_root;
129 inline void set_rwy_lights_root (ssgRoot *r) {
133 inline ssgRoot *get_taxi_lights_root () const {
134 return taxi_lights_root;
136 inline void set_taxi_lights_root (ssgRoot *r) {
137 taxi_lights_root = r;
140 inline ssgBranch *get_models_branch () const {
141 return models_branch;
143 inline void set_models_branch (ssgBranch *t) {
147 inline ssgBranch *get_aircraft_branch () const {
148 return aircraft_branch;
150 inline void set_aircraft_branch (ssgBranch *t) {
154 void register_placement_transform(ssgPlacementTransform *trans);
155 void unregister_placement_transform(ssgPlacementTransform *trans);
159 #endif // _SCENERY_HXX