LinearGradient    160 coders/gradient.c     LinearGradient : RadialGradient,PadSpread,&start_color,&stop_color);
LinearGradient   2517 magick/draw.c              (void) GradientImage(image,LinearGradient,ReflectSpread,
LinearGradient   3190 magick/draw.c      case LinearGradient:
LinearGradient   3412 magick/draw.c                if (gradient->type == LinearGradient)
LinearGradient   3451 magick/draw.c                      if (gradient->type == LinearGradient)
LinearGradient    460 magick/paint.c   if ((type == LinearGradient) && (gradient->gradient_vector.y2 != 0.0))