e2e5223784
This fixes us leaking all STG objects on shutdown, due to an errant raw pointer in the scenery layer.
112 lines
4.5 KiB
C++
112 lines
4.5 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 _TERRAIN_HXX
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#define _TERRAIN_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/Switch>
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#include <simgear/compiler.h>
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#include <simgear/math/SGMath.hxx>
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#include <simgear/scene/model/particles.hxx>
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#include <simgear/structure/subsystem_mgr.hxx>
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#include "scenery.hxx"
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#include "SceneryPager.hxx"
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#include "tilemgr.hxx"
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namespace simgear {
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class BVHMaterial;
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}
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// Define a structure containing global scenery parameters
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class FGTerrain
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{
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public:
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FGTerrain() = default;
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virtual ~FGTerrain() = default;
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// Implementation of SGSubsystem. - called from Scenery
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virtual void init ( osg::Group* terrain ) = 0;
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virtual void reinit() = 0;
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virtual void shutdown () = 0;
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virtual void bind () = 0;
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virtual void unbind () = 0;
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virtual void update (double dt) = 0;
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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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virtual bool get_elevation_m(const SGGeod& geod, double& alt,
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const simgear::BVHMaterial** material,
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const osg::Node* butNotFrom = 0) = 0;
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/// Compute the elevation of the scenery below 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 offset 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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virtual bool get_cart_elevation_m(const SGVec3d& pos, double max_altoff,
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double& elevation,
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const simgear::BVHMaterial** material,
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const osg::Node* butNotFrom = 0) = 0;
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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 coordinate system. Units are meters.
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/// On success, true is returned.
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virtual bool get_cart_ground_intersection(const SGVec3d& start, const SGVec3d& dir,
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SGVec3d& nearestHit,
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const osg::Node* butNotFrom = 0) = 0;
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/// Returns true if scenery is available for the given lat, lon position
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/// within a range of range_m.
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/// lat and lon are expected to be in degrees.
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virtual bool scenery_available(const SGGeod& position, double range_m) = 0;
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// tile mgr api
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virtual bool schedule_scenery(const SGGeod& position, double range_m, double duration=0.0) = 0;
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virtual void materialLibChanged() = 0;
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};
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#endif // _TERRAIN_HXX
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