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97 lines
2.2 KiB
C++
97 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_PS_PLANE_BASIS_H
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#define NL_PS_PLANE_BASIS_H
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#include "nel/misc/types_nl.h"
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#include "nel/misc/vector.h"
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#include "nel/misc/matrix.h"
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#include "nel/misc/traits_nl.h"
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#include "nel/3d/ps_util.h"
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#include "nel/3d/ps_attrib_maker_helper.h"
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namespace NL3D {
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/** A basis for plane object, used by particle by face and shockwaves
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* It's a like a 2x3 matrix, (with only the X and Y vector defined)
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*/
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struct CPlaneBasis
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{
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NLMISC::CVector X ;
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NLMISC::CVector Y ;
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// default ctor
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CPlaneBasis() {}
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// construct this basis by giving a normal to the plane that contains it
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CPlaneBasis(const NLMISC::CVector &normal)
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{
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NLMISC::CMatrix mat;
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CPSUtil::buildSchmidtBasis(normal, mat) ;
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X = mat.getI() ;
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Y = mat.getJ() ;
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}
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// construct this basis by giving its X and Y vectors
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CPlaneBasis(const NLMISC::CVector &x, const NLMISC::CVector &y) : X(x), Y(y)
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{
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}
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/// compute the normal of the plane basis
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NLMISC::CVector getNormal(void) const
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{
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return X ^ Y ;
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}
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void serial(NLMISC::IStream &f) throw(NLMISC::EStream)
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{
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f.serial(X, Y) ;
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}
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} ;
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// for map insertion
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inline bool operator<(const CPlaneBasis &p1, const CPlaneBasis &p2)
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{
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if (p1.X != p2.X) return p1.X < p2.X;
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return p1.Y < p2.Y;
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}
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} // NL3D
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// special traits for optimization
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namespace NLMISC
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{
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NL_TRIVIAL_TYPE_TRAITS(NL3D::CPlaneBasis);
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}
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#endif // NL_PS_PLANE_BASIS_H
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/* End of ps_plane_basis.h */
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