114 lines
4.2 KiB
C++
114 lines
4.2 KiB
C++
// Viewer.hxx -- alternative flightgear viewer application
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//
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// Copyright (C) 2009 - 2012 Mathias Froehlich
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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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#ifndef _fgviewer_SlaveCamera_hxx
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#define _fgviewer_SlaveCamera_hxx
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#include <string>
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#include <osg/Camera>
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#include <simgear/math/SGMath.hxx>
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#include <simgear/structure/SGWeakReferenced.hxx>
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#include "Frustum.hxx"
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namespace fgviewer {
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class Viewer;
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class SlaveCamera : public SGWeakReferenced {
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public:
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SlaveCamera(const std::string& name);
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virtual ~SlaveCamera();
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const std::string& getName() const
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{ return _name; }
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/// The drawable this camera renders to
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bool setDrawableName(const std::string& drawableName);
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const std::string& getDrawableName() const
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{ return _drawableName; }
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/// The viewport into the above drawable
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virtual bool setViewport(const SGVec4i& viewport);
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SGVec4i getViewport() const
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{ return SGVec4i(_viewport->x(), _viewport->y(), _viewport->width(), _viewport->height()); }
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double getAspectRatio() const
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{ return _viewport->aspectRatio(); }
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/// The view offset, usually an orientation offset
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virtual bool setViewOffset(const osg::Matrix& viewOffset);
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const osg::Matrix& getViewOffset() const
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{ return _viewOffset; }
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bool setViewOffsetDeg(double headingDeg, double pitchDeg, double rollDeg);
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/// The frustum for this camera
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virtual bool setFrustum(const Frustum& frustum);
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const Frustum& getFrustum() const
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{ return _frustum; }
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void setFustumByFieldOfViewDeg(double fieldOfViewDeg);
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bool setRelativeFrustum(const std::string names[2], const SlaveCamera& referenceCameraData,
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const std::string referenceNames[2]);
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/// For relative cameras configure the reference points that should match
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void setProjectionReferencePoint(const std::string& name, const osg::Vec2& point);
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osg::Vec2 getProjectionReferencePoint(const std::string& name) const;
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/// Set the reference points for a monitor configuration
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void setMonitorProjectionReferences(double width, double height,
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double bezelTop, double bezelBottom,
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double bezelLeft, double bezelRight);
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/// Access parameters of this view/camera
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osg::Vec3 getLeftEyeOffset(const Viewer& viewer) const;
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osg::Vec3 getRightEyeOffset(const Viewer& viewer) const;
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double getZoomFactor(const Viewer& viewer) const;
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osg::Matrix getEffectiveViewOffset(const Viewer& viewer) const;
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Frustum getEffectiveFrustum(const Viewer& viewer) const;
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/// The top level camera holding the context
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osg::Camera* getCamera()
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{ return _camera.get(); }
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/// Top level entry points
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bool realize(Viewer& viewer);
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bool update(Viewer& viewer);
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protected:
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virtual osg::Camera* _realizeImplementation(Viewer& viewer);
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virtual bool _updateImplementation(Viewer& viewer);
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private:
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SlaveCamera(const SlaveCamera&);
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SlaveCamera& operator=(const SlaveCamera&);
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/// The immutable name that is used to reference this slave camera.
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const std::string _name;
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std::string _drawableName;
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osg::ref_ptr<osg::Viewport> _viewport;
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osg::Matrix _viewOffset;
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Frustum _frustum;
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/// The camera that is attached to the slave and that has a context attached.
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osg::ref_ptr<osg::Camera> _camera;
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/// For relative views, the named reference points in the projection space
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typedef std::map<std::string, osg::Vec2> NameReferencePointMap;
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NameReferencePointMap _referencePointMap;
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};
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} // namespace fgviewer
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#endif
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