Mathias Froehlich
22878b6f89
The basic boundignvolume implementation does only need math and geometry. As such it is agnostic to the scenegraph being used. Only the parts building this query structure from terrain depend on the implementation of the terrain. So, move this into the simgear core component.
83 lines
2.6 KiB
C++
83 lines
2.6 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 BVHTransform_hxx
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#define BVHTransform_hxx
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#include "BVHGroup.hxx"
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namespace simgear {
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class BVHTransform : public BVHGroup {
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public:
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BVHTransform();
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virtual ~BVHTransform();
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virtual void accept(BVHVisitor& visitor);
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void setTransform(const BVHTransform& transform);
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void setToWorldTransform(const SGMatrixd& transform);
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const SGMatrixd& getToWorldTransform() const
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{ return _toWorld; }
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void setToLocalTransform(const SGMatrixd& transform);
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const SGMatrixd& getToLocalTransform() const
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{ return _toLocal; }
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SGVec3d ptToWorld(const SGVec3d& point) const
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{ return _toWorld.xformPt(point); }
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SGVec3d ptToLocal(const SGVec3d& point) const
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{ return _toLocal.xformPt(point); }
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SGVec3d vecToWorld(const SGVec3d& vec) const
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{ return _toWorld.xformVec(vec); }
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SGVec3d vecToLocal(const SGVec3d& vec) const
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{ return _toLocal.xformVec(vec); }
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SGLineSegmentd lineSegmentToWorld(const SGLineSegmentd& lineSeg) const
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{ return lineSeg.transform(_toWorld); }
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SGLineSegmentd lineSegmentToLocal(const SGLineSegmentd& lineSeg) const
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{ return lineSeg.transform(_toLocal); }
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SGSphered sphereToWorld(const SGSphered& sphere) const
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{
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SGVec3d center = ptToWorld(sphere.getCenter());
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double radius = _toWorldAmplification*sphere.getRadius();
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return SGSphered(center, radius);
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}
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SGSphered sphereToLocal(const SGSphered& sphere) const
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{
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SGVec3d center = ptToLocal(sphere.getCenter());
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double radius = _toLocalAmplification*sphere.getRadius();
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return SGSphered(center, radius);
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}
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private:
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virtual SGSphered computeBoundingSphere() const;
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void updateAmplificationFactors();
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SGMatrixd _toWorld;
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SGMatrixd _toLocal;
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double _toWorldAmplification;
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double _toLocalAmplification;
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};
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}
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#endif
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