51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
/****************************************************************************
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Copyright (c) 2007, Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "stdneb.h"
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#include "math/float4.h"
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#include "math/matrix44.h"
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#include "system/byteorder.h"
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namespace Math
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{
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//------------------------------------------------------------------------
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vector quaternion::operator* (const vector& v) const
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{
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// copy from ogre
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// nVidia SDK implementation
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vector uv, uuv;
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vector qvec (x(), y(), z() );
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uv = qvec.crossProduct(v);
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uuv = qvec.crossProduct(uv);
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uv *= (2.0f * w());
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uuv *= 2.0f;
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return v + uv + uuv;
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}
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}
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