ShepardsColorInterpolate  465 Magick++/lib/Magick++/Include.h   using MagickCore::ShepardsColorInterpolate;
ShepardsColorInterpolate 2790 magick/distort.c           case ShepardsColorInterpolate:
ShepardsColorInterpolate 1454 magick/option.c     { "Shepards", (ssize_t) ShepardsColorInterpolate, MagickFalse },