frohlich
fa20363853
Add an id field to identify BVHMotionTransforms. Provide a factory for ids. Use that to identify velocity data. Track the lowermost id in the visitors. Modified Files: simgear/scene/bvh/BVHLineSegmentVisitor.cxx simgear/scene/bvh/BVHLineSegmentVisitor.hxx simgear/scene/bvh/BVHMotionTransform.cxx simgear/scene/bvh/BVHMotionTransform.hxx simgear/scene/bvh/BVHNearestPointVisitor.hxx simgear/scene/bvh/BVHNode.cxx simgear/scene/bvh/BVHNode.hxx simgear/scene/util/SGSceneUserData.cxx simgear/scene/util/SGSceneUserData.hxx
75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
// Copyright (C) 2008 - 2009 Mathias Froehlich - Mathias.Froehlich@web.de
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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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 GNU
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// Library 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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//
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#ifndef BVHNode_hxx
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#define BVHNode_hxx
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#include <vector>
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#include <simgear/math/SGGeometry.hxx>
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#include <simgear/structure/SGReferenced.hxx>
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namespace simgear {
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class BVHGroup;
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class BVHVisitor;
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// Base for the tree nodes
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class BVHNode : public SGReferenced {
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public:
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BVHNode();
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virtual ~BVHNode();
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// visitors ...
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virtual void accept(BVHVisitor& visitor) = 0;
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const SGSphered& getBoundingSphere() const
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{
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if (_dirtyBoundingSphere) {
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_boundingSphere = computeBoundingSphere();
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_dirtyBoundingSphere = false;
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}
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return _boundingSphere;
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}
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virtual SGSphered computeBoundingSphere() const = 0;
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/// A unique id for some kind of BVHNodes.
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/// Currently only motions transforms.
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typedef unsigned Id;
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// Factory to get a new id
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static Id getNewId();
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protected:
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friend class BVHGroup;
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void addParent(BVHNode* parent);
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void removeParent(BVHNode* parent);
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void invalidateParentBound();
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virtual void invalidateBound();
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private:
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mutable bool _dirtyBoundingSphere;
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mutable SGSphered _boundingSphere;
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typedef std::vector<BVHNode*> ParentList;
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ParentList _parents;
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};
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}
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#endif
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