A basis function. Typedef: WlzBasisFn. More...

Data Fields
WlzFnType	type

int	nPoly

int	nBasis

int	nVtx

int	maxVx

WlzVertexP	poly

WlzVertexP	basis

WlzVertexP	vertices

WlzVertexP	sVertices

void *	param

WlzBasisEvalFn	evalFn

WlzHistogramDomain *	evalData

WlzBasisDistFn	distFn

WlzCMeshP	mesh

double **	distMap

Detailed Description

A basis function. Typedef: WlzBasisFn.

Field Documentation

◆ type

WlzFnType _WlzBasisFn::type

The transform basis function.

Referenced by WlzBasisFnConf2DFromCPts(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnPoly2DFromCPts(), WlzBasisFnSetCMesh2D(), WlzBasisFnSetCMesh3D(), WlzBasisFnSetMesh(), WlzBasisFnTPS2DChangeCPtsParam(), WlzBasisFnTPS2DFromCPts(), and WlzBasisFnTransformVertexD().

◆ nPoly

int _WlzBasisFn::nPoly

Polynomial order + 1.

Referenced by WlzBasisFnConf2DFromCPts(), WlzBasisFnPoly2DFromCPts(), WlzBasisFnTPS2DChangeCPtsParam(), WlzBasisFnValueConf2D(), and WlzBasisFnValuePoly2D().

◆ nBasis

int _WlzBasisFn::nBasis

Number of basis function coefficients.

Referenced by WlzBasisFnConf2DFromCPts(), and WlzBasisFnPoly2DFromCPts().

◆ nVtx

int _WlzBasisFn::nVtx

Number of control point vertices.

Referenced by WlzBasisFnConf2DFromCPts(), WlzBasisFnFree(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnPoly2DFromCPts(), WlzBasisFnTPS2DFromCPts(), WlzBasisFnValueGauss2D(), WlzBasisFnValueIMQ2D(), WlzBasisFnValueIMQ3D(), WlzBasisFnValueMOS3D(), WlzBasisFnValueMQ2D(), WlzBasisFnValueMQ3D(), WlzBasisFnValueScalarMOS3D(), and WlzBasisFnValueTPS2D().

◆ maxVx

int _WlzBasisFn::maxVx

Maximum number of vertices space has been allocated for.

Referenced by WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), and WlzBasisFnTPS2DFromCPts().

◆ poly

WlzVertexP _WlzBasisFn::poly

Polynomial coefficients.

Referenced by WlzBasisFnConf2DFromCPts(), WlzBasisFnFree(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnPoly2DFromCPts(), WlzBasisFnTPS2DFromCPts(), WlzBasisFnValueConf2D(), and WlzBasisFnValuePoly2D().

◆ basis

WlzVertexP _WlzBasisFn::basis

Basis function coefficients.

Referenced by WlzBasisFnFree(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnTPS2DFromCPts(), WlzBasisFnValueGauss2D(), WlzBasisFnValueIMQ2D(), WlzBasisFnValueIMQ3D(), WlzBasisFnValueMOS3D(), WlzBasisFnValueMQ2D(), WlzBasisFnValueMQ3D(), WlzBasisFnValueScalarMOS3D(), and WlzBasisFnValueTPS2D().

◆ vertices

WlzVertexP _WlzBasisFn::vertices

Control point vertices, these are the destination vertices of the control points used to define the basis function transform.

Referenced by WlzBasisFnFree(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnTPS2DFromCPts(), WlzBasisFnValueGauss2D(), WlzBasisFnValueIMQ2D(), WlzBasisFnValueIMQ3D(), WlzBasisFnValueMOS3D(), WlzBasisFnValueMQ2D(), WlzBasisFnValueMQ3D(), WlzBasisFnValueScalarMOS3D(), and WlzBasisFnValueTPS2D().

◆ sVertices

WlzVertexP _WlzBasisFn::sVertices

Source vertices used to compute the transform. Not always used and may be NULL.

Referenced by WlzBasisFnFree(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), and WlzBasisFnTPS2DFromCPts().

◆ param

void* _WlzBasisFn::param

Other parameters used by the basis function, e.g. delta in the MQ and Gauss basis functions. Must be allocated in a single block to allow the parameters to be freed by AlcFree(). For the MQ this is actually \((\delta r)^2\), where \(r\) is the range of the landmarks.

Referenced by WlzBasisFnFree(), WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnTPS2DFromCPts(), WlzBasisFnValueGauss2D(), WlzBasisFnValueIMQ2D(), WlzBasisFnValueIMQ3D(), WlzBasisFnValueMOS3D(), WlzBasisFnValueMQ2D(), WlzBasisFnValueMQ3D(), and WlzBasisFnValueScalarMOS3D().

◆ evalFn

WlzBasisEvalFn _WlzBasisFn::evalFn

An alternative basis function evaluation function that may be called if non NULL.

Referenced by WlzBasisFnValueMOS3D(), and WlzBasisFnValueScalarMOS3D().

◆ evalData

WlzHistogramDomain* _WlzBasisFn::evalData

Data passed to the alternative basis function evaluation function if the function pointer is non NULL. AlcFree() will be called to free the data when the basis function is free'd.

Referenced by WlzBasisFnFree().

◆ distFn

WlzBasisDistFn _WlzBasisFn::distFn

An alternative basis function distance function that may be called if non NULL.

Referenced by WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnTPS2DFromCPts(), WlzBasisFnValueGauss2D(), WlzBasisFnValueIMQ2D(), WlzBasisFnValueIMQ3D(), WlzBasisFnValueMQ2D(), WlzBasisFnValueMQ3D(), and WlzBasisFnValueTPS2D().

◆ mesh

WlzCMeshP _WlzBasisFn::mesh

Associated mesh.

Referenced by WlzBasisFnGauss2DFromCPts(), WlzBasisFnIMQ2DFromCPts(), WlzBasisFnIMQ3DFromCPts(), WlzBasisFnMQ2DFromCPts(), WlzBasisFnMQ3DFromCPts(), WlzBasisFnTPS2DChangeCPtsParam(), and WlzBasisFnTPS2DFromCPts().

◆ distMap

double** _WlzBasisFn::distMap

Array of one dimensional arrays. There is a one dimensional array of mesh node distances for each landmark pair. Where the mesh is the mesh in the associated transform. In each one dimensional array the node distances are indexed bu the node indices. There is a one dimensional array for each of the control points. Essentialy these arrays cache distances to avoid recomputation. If a distance array is no longer valid it should be freed and set to NULL, it will then be recomputed as needed. Athough the number of control points may vary the number of mesh nodes must remain constant.