VoronoiColorInterpolate  612 Magick++/lib/Magick++/Include.h   using MagickCore::VoronoiColorInterpolate;
VoronoiColorInterpolate 3172 magick/distort.c           case VoronoiColorInterpolate:
VoronoiColorInterpolate 1524 magick/option.c     { "Voronoi", VoronoiColorInterpolate, UndefinedOptionFlag, MagickFalse },