libjbt

jbt_superquadric_distance Class Reference

Implements Barr super-ellipse distance. More...

#include <distance.h>

Inherits jbt_distance.

Inherited by jbt_anisotropic_superquadric_distance.

List of all members.

Public Members

• jbt_superquadric_distance ( jFlt _ew = 2, jFlt _ns = 2, int _axis = 2 )
• jFlt f ( const jVec3& )
• jVec3 df ( const jVec3&, jFlt)

Protected Members

• jFlt ew
• jFlt ns
• jFlt ew_2
• jFlt ns_2
• jFlt ns_ew
• int axis

Detailed Description

This metric allows surfaces with pinches and roundness in only one direction. And lots of other things.

l = (|x|^(2/ew) + |y|^(e/ew))^(ew/ns) + |z|^(2/ns)

ew,ns > 0

Note that ew = ns = 2 is a sphere for a point source skeleton

Member Function Documentation

jbt_superquadric_distance::jbt_superquadric_distance( jFlt _ew = 2, jFlt _ns = 2, int _axis = 2 )

jFlt jbt_superquadric_distance::f( const jVec3& )

jVec3 jbt_superquadric_distance::df( const jVec3&, jFlt)

Member Data Documentation

jFlt jbt_superquadric_distance::ew [protected]

jFlt jbt_superquadric_distance::ns [protected]

jFlt jbt_superquadric_distance::ew_2 [protected]

jFlt jbt_superquadric_distance::ns_2 [protected]

jFlt jbt_superquadric_distance::ns_ew [protected]

int jbt_superquadric_distance::axis [protected]

• distance.h