/usr/include/osgSim/VisibilityGroup is in libopenscenegraph-3.4-dev 3.4.0+dfsg1-4+b3.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 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 OSGSIM_VISIBILITYGROUP
#define OSGSIM_VISIBILITYGROUP 1
#include <osg/Node>
#include <osg/Group>
#include <osg/NodeVisitor>
#include <osgSim/Export>
namespace osgSim {
/** VisibilityGroup renders (traverses) it's children only when the camera is inside a specified visibility volume.
* The visibility volume is intersected with a line segment that extends from
* the current camera's eye-point along the view vector for a given segment length.
* If an intersection is detected then the node's children are traversed.
*/
class OSGSIM_EXPORT VisibilityGroup : public osg::Group
{
public :
VisibilityGroup();
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
VisibilityGroup(const VisibilityGroup&,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
META_Node(osgSim, VisibilityGroup);
virtual void traverse(osg::NodeVisitor& nv);
/** Set the subgraph that is intersected for the visibility determination.*/
void setVisibilityVolume(osg::Node* node) { _visibilityVolume = node; }
/** Get the subgraph that is intersected for the visibility determination.*/
osg::Node* getVisibilityVolume() { return _visibilityVolume.get(); }
/** Get the const subgraph that is intersected for the visibility determination.*/
const osg::Node* getVisibilityVolume() const { return _visibilityVolume.get(); }
/** Set the traversal mask for the intersection testing.*/
void setVolumeIntersectionMask(osg::Node::NodeMask mask) { _volumeIntersectionMask = mask; }
/** Get the traversal mask for the intersection testing.*/
osg::Node::NodeMask getVolumeIntersectionMask() const { return _volumeIntersectionMask; }
/** Set the length of the intersection segment.
* The segments extends this many database units from the camera eye-point along the look vector.
* If this is left at zero then the diameter of the bounding sphere of the visibility volume is used.*/
void setSegmentLength(float length) { _segmentLength = length; }
/** Get the length of the intersection segment.*/
float getSegmentLength() const { return _segmentLength; }
protected :
virtual ~VisibilityGroup() {}
osg::ref_ptr<osg::Node> _visibilityVolume;
osg::Node::NodeMask _volumeIntersectionMask;
float _segmentLength;
};
}
#endif
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