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 - curt@infoplane.com
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/math/point3d.hxx>
38 #include <Main/fgfs.hxx>
41 // Define a structure containing global scenery parameters
42 class FGScenery : public FGSubsystem {
43 // center of current scenery chunk
46 // next center of current scenery chunk
49 // angle of sun relative to current local horizontal
52 // elevation of terrain at our current lat/lon (based on the
53 // actual drawn polygons)
56 // the distance (radius) from the center of the earth to the
57 // current scenery elevation point
60 // unit normal at point used to determine current elevation
64 ssgRoot * scene_graph;
65 ssgBranch * terrain_branch;
66 ssgBranch * gnd_lights_branch;
67 ssgBranch * rwy_lights_branch;
68 ssgBranch * models_branch;
69 ssgBranch * aircraft_branch;
78 // Implementation of FGSubsystem.
82 void update (double dt);
84 inline double get_cur_elev() const { return cur_elev; }
85 inline void set_cur_elev( double e ) { cur_elev = e; }
87 inline Point3D get_center() const { return center; }
88 inline void set_center( Point3D p ) { center = p; }
90 inline Point3D get_next_center() const { return next_center; }
91 inline void set_next_center( Point3D p ) { next_center = p; }
93 inline void set_cur_radius( double r ) { cur_radius = r; }
94 inline void set_cur_normal( sgdVec3 n ) { sgdCopyVec3( cur_normal, n ); }
96 inline ssgRoot * get_scene_graph () const { return scene_graph; }
97 inline void set_scene_graph (ssgRoot * s) { scene_graph = s; }
99 inline ssgBranch * get_terrain_branch () const { return terrain_branch; }
100 inline void set_terrain_branch (ssgBranch * t) { terrain_branch = t; }
102 inline ssgBranch * get_gnd_lights_branch () const {
103 return gnd_lights_branch;
105 inline void set_gnd_lights_branch (ssgBranch * t) {
106 gnd_lights_branch = t;
109 inline ssgBranch * get_rwy_lights_branch () const {
110 return rwy_lights_branch;
112 inline void set_rwy_lights_branch (ssgBranch * t) {
113 rwy_lights_branch = t;
116 inline ssgBranch * get_models_branch () const {
117 return models_branch;
119 inline void set_models_branch (ssgBranch * t) {
123 inline ssgBranch * get_aircraft_branch () const {
124 return aircraft_branch;
126 inline void set_aircraft_branch (ssgBranch * t) {
130 inline ssgRoot * get_lighting () const { return lighting; }
131 inline void set_lighting (ssgRoot *l) { lighting = l; }
135 #endif // _SCENERY_HXX