17262df51c
src/FDM/flight.cxx src/FDM/flight.hxx src/FDM/LaRCsim/LaRCsim.cxx src/FDM/SP/ADA.cxx src/Scenery/scenery.cxx src/Scenery/scenery.hxx: Remove obviously unused variables from FGInterface, make use of SGMath functions. No longer use plib math functions in FGInterface.
107 lines
4.1 KiB
C++
107 lines
4.1 KiB
C++
// scenery.hxx -- data structures and routines for managing scenery.
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//
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// Written by Curtis Olson, started May 1997.
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//
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// Copyright (C) 1997 Curtis L. Olson - http://www.flightgear.org/~curt
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// $Id$
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#ifndef _SCENERY_HXX
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#define _SCENERY_HXX
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include <osg/ref_ptr>
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#include <osg/Group>
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#include <simgear/compiler.h>
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#include <simgear/math/SGMath.hxx>
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#include <simgear/structure/subsystem_mgr.hxx>
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class SGMaterial;
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// Define a structure containing global scenery parameters
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class FGScenery : public SGSubsystem {
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// scene graph
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osg::ref_ptr<osg::Group> scene_graph;
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osg::ref_ptr<osg::Group> terrain_branch;
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osg::ref_ptr<osg::Group> models_branch;
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osg::ref_ptr<osg::Group> aircraft_branch;
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public:
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FGScenery();
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~FGScenery();
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// Implementation of SGSubsystem.
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void init ();
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void bind ();
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void unbind ();
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void update (double dt);
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/// Compute the elevation of the scenery at geodetic latitude lat,
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/// geodetic longitude lon and not higher than max_alt.
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/// If the exact flag is set to true, the scenery center is moved to
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/// gain a higher accuracy of that query. The center is restored past
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/// that to the original value.
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/// The altitude hit is returned in the alt argument.
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/// The method returns true if the scenery is available for the given
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/// lat/lon pair. If there is no scenery for that point, the altitude
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/// value is undefined.
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/// All values are meant to be in meters or degrees.
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bool get_elevation_m(double lat, double lon, double max_alt,
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double& alt, const SGMaterial** material);
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bool get_elevation_m(const SGGeod& geod, double& alt,
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const SGMaterial** material);
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/// Compute the elevation of the scenery beow the cartesian point pos.
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/// you the returned scenery altitude is not higher than the position
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/// pos plus an ofset given with max_altoff.
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/// If the exact flag is set to true, the scenery center is moved to
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/// gain a higher accuracy of that query. The center is restored past
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/// that to the original value.
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/// The altitude hit is returned in the alt argument.
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/// The method returns true if the scenery is available for the given
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/// lat/lon pair. If there is no scenery for that point, the altitude
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/// value is undefined.
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/// All values are meant to be in meters.
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bool get_cart_elevation_m(const SGVec3d& pos, double max_altoff,
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double& radius, const SGMaterial** material);
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/// Compute the nearest intersection point of the line starting from
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/// start going in direction dir with the terrain.
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/// The input and output values should be in cartesian coordinates in the
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/// usual earth centered wgs84 coordiante system. Units are meters.
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/// On success, true is returned.
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bool get_cart_ground_intersection(const SGVec3d& start, const SGVec3d& dir,
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SGVec3d& nearestHit);
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osg::Group *get_scene_graph () const { return scene_graph.get(); }
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osg::Group *get_terrain_branch () const { return terrain_branch.get(); }
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osg::Group *get_models_branch () const { return models_branch.get(); }
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osg::Group *get_aircraft_branch () const { return aircraft_branch.get(); }
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};
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#endif // _SCENERY_HXX
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