A reversible Toe.

ToeReverse.nk

set cut_paste_input [stack 0]
push $cut_paste_input
Group {
 name ToeReverse
 tile_color 0x7aa9ffff
 addUserKnob {20 Toe}
 addUserKnob {18 lift}
 lift 0
 addUserKnob {6 lift_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
 addUserKnob {18 pivot}
 pivot 0.18
 addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
 addUserKnob {7 soften}
 addUserKnob {7 pre_offset t "if soften != 0, negative values will be clipped. This adds a value to the pixels before processing and then reverses to counteract it" R 0 0.1}
 addUserKnob {6 invert +STARTLINE}
}
 Input {
  inputs 0
  name Input
  xpos -576
  ypos 30
 }
 Dot {
  name Dot2
  label " "
  note_font "Helvetica Bold Bold Bold"
  note_font_size 24
  note_font_color 0xa5a5a501
  xpos -542
  ypos 83
 }
set N9c6a870 [stack 0]
 Dot {
  name Dot3
  label " "
  note_font "Helvetica Bold Bold Bold"
  note_font_size 24
  note_font_color 0xa5a5a501
  xpos -810
  ypos 83
 }
 Expression {
  temp_name0 t_g
  temp_expr0 pow(r/pivot.r,1/soften)*pivot.r
  temp_name1 t_l
  temp_expr1 "(r-pivot.r)*(1-lift.r) + pivot.r"
  temp_name2 ti_l
  temp_expr2 "(r-pivot.r)/(1-lift.r) + pivot.r"
  temp_name3 ti_g
  temp_expr3 pow(ti_l/pivot.r,1/(1/soften))*pivot.r
  expr0 "r > pivot.r ? r : invert ? ((r-pivot.r)/(1-lift.r) + pivot.r) : ((r-pivot.r)*(1-lift.r) + pivot.r)"
  expr1 "g > pivot.g ? g : invert ? ((g-pivot.g)/(1-lift.g) + pivot.g) : ((g-pivot.g)*(1-lift.g) + pivot.g)"
  expr2 "b > pivot.b ? b : invert ? ((b-pivot.b)/(1-lift.b) + pivot.b) : ((b-pivot.b)*(1-lift.b) + pivot.b)"
  expr3 a
  name Toe_NoSoft
  xpos -844
  ypos 238
  addUserKnob {20 User}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 lift}
  lift {{parent.lift} {parent.lift} {parent.lift}}
  addUserKnob {6 lift_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 pivot}
  pivot {{parent.pivot}}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {6 invert +STARTLINE}
  invert {{parent.invert}}
 }
 Dot {
  name Dot4
  label " "
  note_font "Helvetica Bold Bold Bold"
  note_font_size 24
  note_font_color 0xa5a5a501
  xpos -810
  ypos 474
 }
push $N9c6a870
 Add {
  channels rgb
  value {{parent.pre_offset}}
  name PRE_OFFSET
  xpos -576
  ypos 119
 }
 Dot {
  name Dot1
  label " "
  note_font "Helvetica Bold Bold Bold"
  note_font_size 24
  note_font_color 0xa5a5a501
  xpos -542
  ypos 163
 }
set N9d83070 [stack 0]
 Expression {
  temp_name0 t_g
  temp_expr0 pow(r/pivot.r,1/soften)*pivot.r
  temp_name1 t_l
  temp_expr1 "(t_g-pivot.r)*(1-lift.r) + pivot.r"
  temp_name2 ti_l
  temp_expr2 "(r-pivot.r)/(1-lift.r) + pivot.r"
  temp_name3 ti_g
  temp_expr3 pow(ti_l/pivot.r,1/(1/soften))*pivot.r
  expr0 "r > pivot.r ? r : invert ? ti_g : t_l"
  expr1 0
  expr2 0
  expr3 a
  name Toe_R
  xpos -710
  ypos 240
  addUserKnob {20 User}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 lift}
  lift {{parent.lift} {parent.lift} {parent.lift}}
  addUserKnob {6 lift_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 pivot}
  pivot {{parent.pivot+parent.pre_offset}}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {7 soften}
  soften {{(1-(parent.soften*parent.lift.r))}}
  addUserKnob {6 invert +STARTLINE}
  invert {{parent.invert}}
 }
push 0
push $N9d83070
 Expression {
  temp_name0 t_g
  temp_expr0 pow(b/pivot.b,1/soften)*pivot.b
  temp_name1 t_l
  temp_expr1 "(t_g-pivot.b)*(1-lift.b) + pivot.b"
  temp_name2 ti_l
  temp_expr2 "(b-pivot.b)/(1-lift.b) + pivot.b"
  temp_name3 ti_g
  temp_expr3 pow(ti_l/pivot.b,1/(1/soften))*pivot.b
  expr0 0
  expr1 0
  expr2 "b > pivot.b ? b : invert ? ti_g : t_l"
  expr3 a
  name Toe_B
  xpos -442
  ypos 239
  addUserKnob {20 User}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 lift}
  lift {{parent.lift} {parent.lift} {parent.lift}}
  addUserKnob {6 lift_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 pivot}
  pivot {{parent.pivot+parent.pre_offset} {parent.pivot+parent.pre_offset} {parent.pivot+parent.pre_offset}}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {7 soften}
  soften {{(1-(parent.soften*parent.lift.b))}}
  addUserKnob {6 invert +STARTLINE}
  invert {{parent.invert}}
 }
push $N9d83070
 Expression {
  temp_name0 t_g
  temp_expr0 pow(g/pivot.g,1/soften)*pivot.g
  temp_name1 t_l
  temp_expr1 "(t_g-pivot.g)*(1-lift.g) + pivot.g"
  temp_name2 ti_l
  temp_expr2 "(g-pivot.g)/(1-lift.g) + pivot.g"
  temp_name3 ti_g
  temp_expr3 pow(ti_l/pivot.g,1/(1/soften))*pivot.g
  expr0 0
  expr1 "g > pivot.g ? g : invert ? ti_g : t_l"
  expr2 0
  expr3 a
  name Toe_G
  xpos -576
  ypos 239
  addUserKnob {20 User}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 lift}
  lift {{parent.lift} {parent.lift} {parent.lift}}
  addUserKnob {6 lift_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {18 pivot}
  pivot {{parent.pivot+parent.pre_offset} {parent.pivot+parent.pre_offset} {parent.pivot+parent.pre_offset}}
  addUserKnob {6 pivot_panelDropped l "panel dropped state" -STARTLINE +HIDDEN}
  addUserKnob {7 soften}
  soften {{(1-(parent.soften*parent.lift.g))}}
  addUserKnob {6 invert +STARTLINE}
  invert {{parent.invert}}
 }
 Merge2 {
  inputs 3+1
  operation plus
  bbox B
  output rgb
  name Merge1
  xpos -576
  ypos 319
 }
 Add {
  channels rgb
  value {{-parent.pre_offset}}
  name PRE_OFFSET_REVERSE
  xpos -576
  ypos 399
 }
 Switch {
  inputs 2
  which {{parent.soften==0}}
  name NO_SOFT
  xpos -576
  ypos 470
 }
 Output {
  name Output
  xpos -576
  ypos 590
 }
end_group