49 lines
1.4 KiB
C++
49 lines
1.4 KiB
C++
/* --------------------------------------------------------------------
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EXTREME TUXRACER
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Copyright (C) 1999-2001 Jasmin F. Patry (Tuxracer)
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Copyright (C) 2010-2013 Extreme Tuxracer Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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 General Public License for more details.
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---------------------------------------------------------------------*/
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#ifdef HAVE_CONFIG_H
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#include <etr_config.h>
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#endif
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#include "vectors.h"
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const TVector2d NullVec2;
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const TVector3d NullVec3;
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const TVector4d NullVec4;
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const TVector2i NullVec2i;
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const TVector3i NullVec3i;
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const TVector4i NullVec4i;
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// Instanciate only functions we actually need
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template<>
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double TVector3<double>::Norm() {
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double square = x*x + y*y + z*z;
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if (square == 0.0) return 0.0;
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double denom = std::sqrt(square);
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*this *= 1.0 / denom;
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return denom;
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}
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TVector3d CrossProduct(const TVector3d& u, const TVector3d& v) {
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return TVector3d(
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u.y * v.z - u.z * v.y,
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u.z * v.x - u.x * v.z,
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u.x * v.y - u.y * v.x);
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}
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