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8435a2c970
commit
78706f9929
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@ -59,20 +59,11 @@ namespace Oyster { namespace Physics3D
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/******************************************************************
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* Returns the world tangential momentum at worldPos, of a mass in rotation.
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* G = ( H x r ) / ( |H| * |r|^2 ) <-> H = r x G
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* @todo TODO: improve doc
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******************************************************************/
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inline ::Oyster::Math::Float4 TangentialLinearMomentum( const ::Oyster::Math::Float4 &angularMomentum, const ::Oyster::Math::Float4 &worldOffset )
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{
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::Oyster::Math::Float magnitudeH_squared = angularMomentum.Dot( angularMomentum );
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if( magnitudeH_squared > 0 )
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{
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return ::Oyster::Math::Float4( angularMomentum.xyz.Cross(worldOffset.xyz), 0.0f ) /= ( (::Oyster::Math::Float)::std::sqrt(magnitudeH_squared) * worldOffset.Dot( worldOffset ) );
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}
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else
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{
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return ::Oyster::Math::Float4::null;
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}
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return ::Oyster::Math::Float4( angularMomentum.xyz.Cross(worldOffset.xyz), 0.0f ) /= worldOffset.Dot( worldOffset );
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}
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/******************************************************************
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