MagickPI2        1144 magick/distort.c       coeff[0] = -MagickPI2;   /* -90, place at top! */
MagickPI2        1148 magick/distort.c         coeff[1] = MagickPI2;   /* zero arguments - center is at top */
MagickPI2        1851 magick/distort.c         for( a=(double) (ceil((double) ((coeff[0]-coeff[1]/2.0)/MagickPI2))*MagickPI2);
MagickPI2        1852 magick/distort.c                a<(coeff[0]+coeff[1]/2.0); a+=MagickPI2 ) {
MagickPI2        2611 magick/distort.c             validity = (double) ((coeff[1]*MagickPI2 - fabs(d.x))/output_scaling + 0.5);
MagickPI2         207 magick/resize.c   return((MagickRealType)cos((double) (MagickPI2*x)));