bf4d63f6ea
methods and reimplement computeBound so that it passes back a bounding volume rather than modifying the local one.
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osg/OccluderNode>
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using namespace osg;
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OccluderNode::OccluderNode()
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{
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}
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OccluderNode::OccluderNode(const OccluderNode& node,const CopyOp& copyop):
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Group(node,copyop),
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_occluder(dynamic_cast<ConvexPlanarOccluder*>(copyop(node._occluder.get())))
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{
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}
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BoundingSphere OccluderNode::computeBound() const
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{
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BoundingSphere bsphere(Group::computeBound());
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if (getOccluder())
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{
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BoundingBox bb;
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const ConvexPlanarPolygon::VertexList& vertexList = getOccluder()->getOccluder().getVertexList();
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for(ConvexPlanarPolygon::VertexList::const_iterator itr=vertexList.begin();
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itr!=vertexList.end();
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++itr)
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{
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bb.expandBy(*itr);
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}
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if (bb.valid())
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{
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bsphere.expandBy(bb);
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}
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}
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return bsphere;
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}
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