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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2009 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSGVOLUME_LOCATOR
#define OSGVOLUME_LOCATOR 1
#include <osgVolume/Export>
#include <osg/Object>
#include <osg/Matrixd>
#include <vector>
namespace osgVolume {
class OSGVOLUME_EXPORT Locator : public osg::Object
{
public:
Locator() {}
Locator(const osg::Matrixd& transform) { setTransform(transform); }
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
Locator(const Locator& locator,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
osg::Object(locator, copyop),
_transform(locator._transform) {}
META_Object(osgVolume, Locator);
/** Set the transformation from local coordinates to model coordinates.*/
void setTransform(const osg::Matrixd& transform) { _transform = transform; _inverse.invert(_transform); locatorModified(); }
/** Set the transformation from local coordinates to model coordinates.*/
const osg::Matrixd& getTransform() const { return _transform; }
/** Set the extents of the local coords.*/
void setTransformAsExtents(double minX, double minY, double maxX, double maxY, double minZ, double maxZ);
virtual bool convertLocalToModel(const osg::Vec3d& /*local*/, osg::Vec3d& /*world*/) const;
virtual bool convertModelToLocal(const osg::Vec3d& /*world*/, osg::Vec3d& /*local*/) const;
static bool convertLocalCoordBetween(const Locator& source, const osg::Vec3d& sourceNDC,
const Locator& destination, osg::Vec3d& destinationNDC)
{
osg::Vec3d model;
if (!source.convertLocalToModel(sourceNDC, model)) return false;
if (!destination.convertModelToLocal(model, destinationNDC)) return false;
return true;
}
bool computeLocalBounds(osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const;
bool computeLocalBounds(Locator& source, osg::Vec3d& bottomLeft, osg::Vec3d& topRight) const;
/** Callback interface for enabling the monitoring of changes to the Locator.*/
class LocatorCallback : virtual public osg::Object
{
public:
LocatorCallback() {}
LocatorCallback(const LocatorCallback& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY): osg::Object(rhs,copyop) {}
META_Object(osgVolume, LocatorCallback);
virtual void locatorModified(Locator* /*locator*/) {};
protected:
virtual ~LocatorCallback() {}
};
void addCallback(LocatorCallback* callback);
void removeCallback(LocatorCallback* callback);
typedef std::vector< osg::ref_ptr<LocatorCallback> > LocatorCallbacks;
LocatorCallbacks& getLocatorCallbacks() { return _locatorCallbacks; }
const LocatorCallbacks& getLocatorCallbacks() const { return _locatorCallbacks; }
protected:
void locatorModified();
osg::Matrixd _transform;
osg::Matrixd _inverse;
LocatorCallbacks _locatorCallbacks;
};
}
#endif
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