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Added polar to cartesian

This commit is contained in:
Paolo Cignoni 2004-09-10 14:01:40 +00:00
parent 359c3a841d
commit 08411ea403
1 changed files with 12 additions and 2 deletions
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14
vcg/space/point3.h
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@ -24,6 +24,9 @@
History History
$Log: not supported by cvs2svn $ $Log: not supported by cvs2svn $
Revision 1.16 2004/03/21 17:14:56 ponchio
Added a math::
Revision 1.15 2004/03/07 22:45:32 cignoni Revision 1.15 2004/03/07 22:45:32 cignoni
Moved quality and normal functions to the triangle class. Moved quality and normal functions to the triangle class.
@ -280,13 +283,20 @@ public:
return *this; return *this;
} }
// Convert to polar coordinates // Convert to polar coordinates
void ToPolar( P3ScalarType & ro, P3ScalarType & tetha, P3ScalarType & fi ) const void ToPolar( P3ScalarType & ro, P3ScalarType & theta, P3ScalarType & fi ) const
{ {
ro = Norm(); ro = Norm();
tetha = (P3ScalarType)atan2( _v[1], _v[0] ); theta = (P3ScalarType)atan2( _v[1], _v[0] );
fi = (P3ScalarType)acos( _v[2]/ro ); fi = (P3ScalarType)acos( _v[2]/ro );
} }
void FromPolar( const P3ScalarType & ro, const P3ScalarType & theta, const P3ScalarType & phi )
{
_v[0]= ro*cos(theta)*sin(phi);
_v[1]= ro*sin(theta)*sin(phi);
_v[2]= ro*cos(phi);
}
//@} //@}
//@{ //@{