83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program 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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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_BSPHERE_H
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#define NL_BSPHERE_H
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#include "types_nl.h"
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#include "vector.h"
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#include "plane.h"
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#include "matrix.h"
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namespace NLMISC
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{
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/**
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* A bounding Sphere.
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* \author Lionel Berenguier
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* \author Nevrax France
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* \date 2000
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*/
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class CBSphere
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{
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public:
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CVector Center;
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float Radius;
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/// Empty Constructor.
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CBSphere() {}
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/// Constructor.
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CBSphere(const CVector & center, float radius) : Center(center), Radius(radius) {}
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/// \name transform
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// @{
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/** compute res= mat * this. NB: radius is maximized, taking max of the 3 axis of the matrix.
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* NB: this may be false if the matrix is not orthogonal...
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*/
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void applyTransform(const CMatrix &mat, CBSphere &res);
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// @}
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/// \name Clip
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// @{
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/// Is the bbox partially in front of the plane?? p MUST be normalized.
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bool clipFront(const CPlane &p) const;
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/// Is the bbox partially in back of the plane?? p MUST be normalized.
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bool clipBack(const CPlane &p) const;
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// @}
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/// Does the sphere include this point?
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bool include(const CVector &p) const;
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/// Does the sphere include TOTALY this sphere?
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bool include(const CBSphere &s) const;
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/// Does the sphere intersect the other?
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bool intersect(const CBSphere &s) const;
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/// Build the union of the 2 sphere ans set to *this. work if this==s1 || this==s2.
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void setUnion(const CBSphere &sa, const CBSphere &sb);
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};
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} // NLMISC
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#endif // NL_BSPHERE_H
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/* End of bsphere.h */
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