AFXMatteAdjust.gizmo

#! /usr/local/Nuke10.5v1/libnuke-10.5.1.so -nx

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# Copyright (C) 2012-2017, Ryan P. Wilson
#
#      Authority FX, Inc.
#      www.authorityfx.com

version 10.5 v1
Gizmo {
 addUserKnob {20 AFXMatteAdjust}
 addUserKnob {41 threshold l Threshold T Ctrls.threshold}
 addUserKnob {26 thresh_controls l "" +STARTLINE}
 addUserKnob {41 falloff l Falloff T Ctrls.falloff}
 addUserKnob {41 darks l Darks T Ctrls.darks}
 addUserKnob {26 contrast_ctrls l "" +STARTLINE}
 addUserKnob {41 contrast l Contrast T Ctrls.contrast}
 addUserKnob {41 amount l Amount T Ctrls.amount}
}
 Input {
  inputs 0
  name Input
  xpos 509
  ypos -333
 }
 Dot {
  name Dot1
  xpos 542
  ypos -254
 }
set N1bb0ee70 [stack 0]
 Expression {
  expr3 "clamp((Ctrls.contrast + 1) * (a - Ctrls.threshold) + Ctrls.threshold, 0, 1)"
  name contrast
  xpos 652
  ypos -154
 }
push $N1bb0ee70
 Expression {
  channel0 none
  channel1 none
  channel2 none
  expr3 "pow(a < Ctrls.threshold && a > 0 ? pow(a / Ctrls.threshold, pow(10, Ctrls.falloff))  * a : a, clamp(1.0 / Ctrls.darks, 0.0008, 125))"
  name matte_threshold
  xpos 509
  ypos -148
 }
 Merge2 {
  inputs 2
  operation screen
  Achannels {-rgba.red -rgba.green -rgba.blue rgba.alpha}
  Bchannels {-rgba.red -rgba.green -rgba.blue rgba.alpha}
  output {-rgba.red -rgba.green -rgba.blue rgba.alpha}
  mix {{Ctrls.amount}}
  name Merge1
  xpos 509
  ypos -62
 }
 Output {
  name Output1
  xpos 509
  ypos 48
 }
push $N1bb0ee70
 NoOp {
  name Ctrls
  xpos 652
  ypos -258
  addUserKnob {20 AFXMatteAdjust}
  addUserKnob {7 threshold l Threshold}
  threshold 0.2
  addUserKnob {26 thresh_controls l "" +STARTLINE}
  addUserKnob {7 falloff l Falloff}
  falloff 0.5
  addUserKnob {7 darks l Darks R 0.5 1.5}
  darks 1
  addUserKnob {26 contrast_ctrls l "" +STARTLINE}
  addUserKnob {7 contrast l Contrast R 0 2}
  contrast 1
  addUserKnob {7 amount l Amount}
  amount 0.5
 }
end_group