Demonstration of Nuke, "Bug 35703. Expressions force tree to validate unnecessarily, when changing unrelated parts of the tree."

expression_evaluation_slowness.nk

set cut_paste_input [stack 0]
version 8.0 v6
push $cut_paste_input
Keyer {
 operation "luminance key"
 range {0.09247749808 1 1 1}
 name Keyer1
 selected true
 xpos -398
 ypos -86
}
Group {
 inputs 0
 name ImagePlaneDegizmoed
 help "This node lets yuo project a texture onto a card to fit the frustum of the connected camera at the reference frame.\n\nThis is useful to either matchmove or stabilise a plate based on a camera rather than 2D tracking data.\n\n"
 knobChanged "\nn = nuke.thisNode()\nk = nuke.thisKnob()\n\nif k.name() == 'use_input':\n    n\['knob'].setEnabled( not k.value() )\n"
 note_font_size 22
 selected true
 xpos -185
 ypos -83
 addUserKnob {20 "" l User}
 addUserKnob {32 knob l "import chan file" t "when importing a chan file instead of hooking up a camera node, make sure to set the corrcet aperture in the CameraKnobs tab before importing the file!" -STARTLINE +DISABLED T "import_chan_button this.CAM_ANIM\nknob this.use_input 0"}
 addUserKnob {6 use_input l "use input" t "if checked the camera hooked up to the cam pipe is used\ninstead of the internal one.\nIf unchecked, make sure to set the correct aperture in the CameraKnobs tab before importing the chan file!" -STARTLINE}
 use_input true
 addUserKnob {4 output t "stabilize - use this to stabilize a plate using the respective match moved camera\nmatch - track an element into the shot based on the camera input" M {stabilize match}}
 output match
 addUserKnob {3 ref l refFrame t "if the output format is the same as the plate you want to match/stabilize,\nthis will be the frame that will not be modified."}
 ref 1001
 addUserKnob {7 distance t "the distance of the card to the camera.\nIf you have a nodal camera this isn't important\notherwise you need to adjust this to get the required parallax." R 1 10000}
 distance 184
 addUserKnob {26 "" l output}
 addUserKnob {41 format T Card3D1.format}
 addUserKnob {41 crop_1 l "black outside" +INVISIBLE T Card3D1.crop}
 addUserKnob {6 crop -STARTLINE}
 addUserKnob {41 full_format l "output format" +INVISIBLE T Card3D1.full_format}
 addUserKnob {41 proxy_format l "proxy format" +INVISIBLE T Card3D1.proxy_format}
 addUserKnob {41 filter T Card3D1.filter}
 addUserKnob {20 "" l MotionBlur}
 addUserKnob {41 motionblur T Card3D1.motionblur}
 addUserKnob {41 shutter T Card3D1.shutter}
 addUserKnob {41 shutteroffset l "shutter offset" T Card3D1.shutteroffset}
 addUserKnob {41 shuttercustomoffset l "" -STARTLINE T Card3D1.shuttercustomoffset}
 addUserKnob {20 "" l CameraKnobs}
 addUserKnob {41 rot_order l "rotation order" T CAM_ANIM.rot_order}
 addUserKnob {41 translate T CAM_ANIM.translate}
 addUserKnob {41 rotate T CAM_ANIM.rotate}
 addUserKnob {26 ""}
 addUserKnob {41 focal l "focal length" T CAM_ANIM.focal}
 addUserKnob {41 haperture l "horiz aperture" T CAM_ANIM.haperture}
 addUserKnob {41 vaperture l "vert aperture" T CAM_ANIM.vaperture}
 addUserKnob {41 win_scale l "window scale" T CAM_ANIM.win_scale}
 addUserKnob {26 ""}
 addUserKnob {41 label_1 l label T CAM_ANIM.label}
}
 Input {
  inputs 0
  name CAM
  xpos -16
  ypos 113
  number 1
 }
 Camera {
  inputs 0
  display off
  selectable false
  haperture 9.58
  vaperture 5.39
  near 0.001
  far {{parent.distance*2}}
  name CAM_ANIM
  xpos -149
  ypos 40
 }
 Switch {
  inputs 2
  which {{parent.use_input}}
  name Switch4
  label "internal or connected camera"
  xpos -16
  ypos 54
 }
set N57969a0 [stack 0]
 Camera {
  inputs 0
  display off
  selectable false
  rot_order {{"\[topnode parent.input1].rot_order"}}
  translate {{"\[topnode parent.input1].translate.x(parent.ref)"} {"\[topnode parent.input1].translate.y(parent.ref)"} {"\[topnode parent.input1].translate.z(parent.ref)"}}
  rotate {{"\[topnode parent.input1].rotate.x(parent.ref)"} {"\[topnode parent.input1].rotate.y(parent.ref)"} {"\[topnode parent.input1].rotate.z(parent.ref)"}}
  focal {{"\[topnode input1].focal.0"}}
  haperture {{"\[topnode input1].haperture.0"}}
  vaperture {{"\[topnode input1].vaperture.0"}}
  near 0.0001
  far {{parent.distance*2}}
  win_scale {{"\[topnode input1].win_scale.0"} {"\[topnode input1].win_scale.1"}}
  name CAM_STATIC1
  tile_color 0x5682e700
  gl_color 0x4851e400
  label "connected cam\n"
  xpos 28
  ypos -178
 }
 Camera {
  inputs 0
  display off
  selectable false
  rot_order {{CAM_ANIM.rot_order}}
  translate {{CAM_ANIM.translate.x(parent.ref)} {CAM_ANIM.translate.y(parent.ref)} {CAM_ANIM.translate.z(parent.ref)}}
  rotate {{CAM_ANIM.rotate.x(parent.ref)} {CAM_ANIM.rotate.y(parent.ref)} {CAM_ANIM.rotate.z(parent.ref)}}
  focal {{CAM_ANIM.focal.0}}
  haperture {{CAM_ANIM.haperture.0}}
  vaperture {{CAM_ANIM.vaperture.0}}
  near 0.0001
  far {{parent.distance*2}}
  name CAM_STATIC
  tile_color 0x5682e700
  gl_color 0x4851e400
  label "internal cam"
  xpos -150
  ypos -80
 }
 Switch {
  inputs 2
  which {{parent.use_input}}
  name Switch5
  label "internal or connected cam\n\[input this \[knob parent.use_input]]"
  xpos 28
  ypos -72
 }
set N57c0560 [stack 0]
 Switch {
  inputs 2
  which {{!parent.output}}
  name Switch1
  label "match or stabilize"
  xpos 177
  ypos -72
 }
push $N57c0560
push $N57969a0
 Switch {
  inputs 2
  which {{!parent.output}}
  name Switch2
  label "match or stabilize"
  xpos 166
  ypos 54
 }
 Input {
  inputs 0
  name IMG
  xpos 409
  ypos -97
 }
 Card3D {
  inputs 3
  scaling {{"\[input Switch5 \[value parent.use_input]].win_scale.0"} {"\[input Switch5 \[value parent.use_input]].win_scale.1"} 1}
  uniform_scale {{parent.distance}}
  pivot {0 0 1}
  lens_in_focal {{"\[input Switch5 \[value parent.use_input]].focal"}}
  lens_in_haperture {{"\[input Switch5 \[value parent.use_input]].haperture"}}
  motionblur 30
  name Card3D1
  label internal
  xpos 409
  ypos 54
 }
 Crop {
  box {0 0 {width} {height}}
  intersect true
  name Crop1
  xpos 409
  ypos 241
  disable {{!parent.crop}}
 }
 Output {
  name Output1
  xpos 409
  ypos 324
 }
end_group