# sc_SphericalTransformComponent man page

sc::SphericalTransformComponent — This is a base class for a container for a component of a sparse Cartesian to solid harmonic basis function transformation.

## Synopsis

`#include <transform.h>`

Inherited by **sc::SphericalTransformComponentCCA**, **sc::SphericalTransformComponentCints**, and **sc::SphericalTransformComponentV3**.

### Public Member Functions

inta() constReturns the exponent of x.

intb() constReturns the exponent of y.

intc() constReturns the exponent of z.

intcartindex() constReturns the index of the Cartesian basis function.

intpureindex() constReturns the index solid harmonic basis function.

doublecoef() constReturns the coefficient of this component of the transformation.

virtual voidinit(inta, intb, intc, doublecoef, intpureindex)=0Initialize this object.

### Protected Attributes

doublecoef_

inta_

intb_

intc_

intcartindex_

intpureindex_

## Detailed Description

This is a base class for a container for a component of a sparse Cartesian to solid harmonic basis function transformation.

## Member Function Documentation

### virtual void sc::SphericalTransformComponent::init (int a, int b, int c, double coef, int pureindex) [pure virtual]

Initialize this object. This must be provided in all specializations of this class to establish the ordering between a, b and c and the index of the Cartesian basis function. Other things such as adjustment of the coefficient to account for normalization differences can be done as well. The default **SphericalTransform::init()** implementation requires that only the xl , yl and zl basis functions are normalized to unity.

Implemented in **sc::SphericalTransformComponentV3**, **sc::SphericalTransformComponentCints**, and **sc::SphericalTransformComponentCCA**.

Referenced by coef().

## Author

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