119 lines
3.1 KiB
C++
119 lines
3.1 KiB
C++
/* -*-c++-*-
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*
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* Copyright (C) 2006-2007 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,
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* MA 02110-1301, USA.
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*
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*/
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#ifndef SG_SCENE_PICKCALLBACK_HXX
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#define SG_SCENE_PICKCALLBACK_HXX
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#include <osg/Vec2d>
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#include <simgear/structure/SGReferenced.hxx>
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#include <simgear/structure/SGSharedPtr.hxx>
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#include <simgear/math/SGMath.hxx>
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namespace osgGA { class GUIEventAdapter; }
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// Used to implement scenery interaction.
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// The interface is still under development
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class SGPickCallback : public SGReferenced {
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public:
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enum Priority {
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PriorityGUI = 0,
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PriorityPanel = 1,
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PriorityOther = 2,
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PriorityScenery = 3
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};
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struct Info {
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SGVec3d wgs84;
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SGVec3d local;
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SGVec2d uv;
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};
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SGPickCallback(Priority priority = PriorityOther) :
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_priority(priority)
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{ }
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virtual ~SGPickCallback() {}
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// TODO maybe better provide a single callback to handle all events
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virtual bool buttonPressed( int button,
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const osgGA::GUIEventAdapter& ea,
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const Info& info )
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{ return false; }
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virtual void update(double dt, int keyModState)
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{ }
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/**
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* @param info Can be null if no info is available (eg. mouse not over 3d
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* object anymore)
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*/
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virtual void buttonReleased( int keyModState,
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const osgGA::GUIEventAdapter& ea,
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const Info* info )
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{ }
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/**
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* @param info Can be null if no info is available (eg. mouse not over 3d
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* object anymore)
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*/
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virtual void mouseMoved( const osgGA::GUIEventAdapter& ea,
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const Info* info )
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{ }
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/**
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* The mouse is not hovering anymore over the element.
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*/
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virtual void mouseLeave(const osg::Vec2d& windowPos)
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{ }
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virtual bool hover( const osg::Vec2d& windowPos,
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const Info& info )
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{ return false; }
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virtual Priority getPriority() const
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{ return _priority; }
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/**
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* retrieve the name of the cursor to user when hovering this pickable
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* object. Mapping is undefined, since SimGear doesn't know about cursors.
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*/
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virtual std::string getCursor() const
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{ return std::string(); }
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/**
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* Whether the uv coordinates of the picking action should be calculated upon
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* an intersection.
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*/
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virtual bool needsUV() const
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{ return false; }
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private:
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Priority _priority;
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};
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struct SGSceneryPick {
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SGPickCallback::Info info;
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SGSharedPtr<SGPickCallback> callback;
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};
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#endif
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