# OEGeom3DTetraCoord¶

template<class T>
void OEGeom3DTetraCoord(T *dst, const T *center, const T *r1, const T *r2, T len)
template<class T>
void OEGeom3DTetraCoord(T *dst, const T *center, const T *r1, const T *r2,
const T *r3, T len)


Calculates cartesian coordinate point dst that has a distance of len from the point center, and corresponds to a tetrahedral atom location with respect to the given coordinates. The first form places the new coordinates at the known tetrahedral angle based on the bisecting vector between $$(r1-center)$$ and $$(r2-center)$$. The second form places it on the direction perpendicular to the plane of the three given coordinates r1, r2, and r3.