#@gimp : 2way Contrast Mask : gimp_contrast_swm10 , gimp_contrast_swm10(0)
#@gimp : sep = separator ()
#@gimp : Blur the mask = float(2,0.5,10)
#@gimp : sep = separator ()
#@gimp : note = note ("Contrast Mask need the negative of the mask")
#@gimp : SKIP to use the mask to boost = bool(false)
#@gimp : note = note ("Uncheck for Contrast Mask,Check for Contrast Boost")
#@gimp : sep = separator ()
#@gimp : note = note("Merge the Mask")
#@gimp : Intensity = float (1,0,1)
#@gimp : sep = separator ()
#@gimp : note = note ("To combine the new grayscale with original's hue&saturation ")
#@gimp : Correct Color Shift = bool(true)
#@gimp : Chose Greyscale ("Value","Luminance","Lightness")
#@gimp : Correction intensity = float(1,0,1)

gimp_contrast_swm10 :
-repeat @# -l[$>] -split_opacity -l[0]

 -name[-1]orig
 --gimp_do_nothing
 -name[-1]bg
 --luminance[bg] -name[-1]fg -to_rgb[fg]
  -blur_xy[FG] $1,$1
  -if {$2==0} -negative[FG] -endif
  -reverse[bg,fg] -gimp_compose_hardlight[bg,fg] $3
  -if {$4==1 && $5==0} -gimp_compose_value $6,0
  -elif {$4==1 && $5==1} -gimp_compose_luminance $6,0
  -elif {$4==1 && $5==2} -gimp_compose_lightness $6,0 -endif

-endl -a c -endl -done