set cut_paste_input [stack 0]
version 13.1 v2
BackdropNode {
 inputs 0
 name BackdropNode24
 tile_color 0xc0c0c001
 label "Pulse Generator"
 note_font_size 100
 selected true
 xpos -483
 ypos -180
 bdwidth 761
 bdheight 259
}
push $cut_paste_input
NoOp {
 name MF_PulseGenerator_v1_
 knobChanged "n = nuke.thisNode()\nk = nuke.thisKnob()\nif k.name() == \"apply\":\n    n\[\"pValue\"].setEnabled(n\[\"apply\"].getValue()!=0)\n    \nif k.name() == \"type\":\n    # Disable length when no need it\n    if n\[\"type\"].getValue() in range(1,4):\n        n\[\"length\"].setEnabled(False)\n        n\[\"length\"].setValue(1)\n    else:\n        n\[\"length\"].setEnabled(True)\n    # Disable expression when no need it\n    if n\[\"type\"].getValue() in range(0,3):\n        n\[\"expression\"].setValue(\"\")\n        n\[\"expression\"].setEnabled(False)\n    else:\n        n\[\"expression\"].setEnabled(True)\n    # Disable expression when no need it\n    if n\[\"type\"].getValue() in range(1,3):\n        n\[\"pValueOffset\"].setValue(1)\n        n\[\"pValueOffset\"].setEnabled(False)\n    else:\n        n\[\"pValueOffset\"].setEnabled(True)\n        \nif k.name() == \"frameRng\":\n    n\[\"startFrame\"].setEnabled(n\[\"frameRng\"].getValue()!=0)\n    n\[\"endFrame\"].setEnabled(n\[\"frameRng\"].getValue()!=0)"
 selected true
 xpos -154
 ypos -29
 addUserKnob {20 user}
 addUserKnob {7 aValue l "Active Value" t "This is the trigger value when is \"on\""}
 aValue 1
 addUserKnob {7 length l Length t "This is the length of the trigger activity." -STARTLINE R 0 10}
 length 1
 addUserKnob {7 pValue l "Passive value" t "This is the value of the trigger when is \"off\""}
 addUserKnob {7 pValueOffset l Offset t "This is the number of frames between active and passive values." -STARTLINE R 1 10}
 pValueOffset 1
 addUserKnob {6 apply l Apply t "Check to apply the passive value" -STARTLINE}
 apply true
addUserKnob {4 type l Type t "- default: Creates a one event trigger.\n\n- even: Creates a trigger on even numbers on the frame range.\n\n- odd: Creates a trigger on odd numbers on the frame range.\n\n- multiple of X: Creates a trigger on frames multiples of the number introduced.\n\n- every X frames: Creates a trigger that starts on the current frame and  repeats every X frames. X is the number introduced.\n" M {default even odd "multiple of X" "every X frames" "" "" "" "" "" ""}}
 addUserKnob {1 expression l " X=" t "Write a number here" -STARTLINE +DISABLED}
 addUserKnob {4 interpolation l Interpolation t "Interpolate keyframes with one of these nuke interpolations" M {Smooth Constant Linear Catmull-Rom Cubic "" "" "" "" "" ""}}
 addUserKnob {6 frameRng l "Frame Range" t "Check for using your own frame range." +STARTLINE}
 addUserKnob {3 startFrame l "" -STARTLINE +DISABLED}
 startFrame 1001
 addUserKnob {3 endFrame l "" -STARTLINE +DISABLED}
 endFrame 1052
 addUserKnob {22 generatePulse l "Generate Pulse" T "import re\n\n#Set the interpolation value on a curve\ndef setInterpolation(animcurve, interpolation):\n    if interpolation == 0:\n        for k in animcurve:\n            k.interpolation = nuke.SMOOTH\n    elif interpolation == 1:\n        for k in animcurve:\n            k.interpolation = nuke.CONSTANT\n    elif interpolation == 2:\n        for k in animcurve:\n            k.interpolation = nuke.LINEAR\n    elif interpolation == 3:\n        for k in animcurve:\n            k.interpolation = nuke.CATMULL_ROM\n    elif interpolation == 4:\n        for k in animcurve:\n            k.interpolation = nuke.CUBIC\n\n#Set a default one shot trigger.\ndef default(frame, aValue, pValue, pValueOffset, length, interpolation):\n    for num in range(0, length):\n        v.setValueAt(aValue, frame + num)\n    if thisN\['apply'].getValue():\n        v.setValueAt(pValue, frame - pValueOffset)\n        v.setValueAt(pValue, frame + length + pValueOffset - 1)\n        \n#Set a Trigger on multiple frames of a given number\ndef multiple(frameRange, aValue, pValue, pValueOffset, interpolation, number):\n    for f in range(frameRange\[0],frameRange\[1] + 1):\n        if(f%number == 0):\n            v.setValueAt(aValue, f)\n            if thisN\['apply'].getValue():\n                v.setValueAt(pValue, f - pValueOffset)\n                if ((f+1)<(frameRange\[1] + 1)):\n                    v.setValueAt(pValue, f + pValueOffset)\n#        else:\n#            v.setValueAt(aValue, f)\n#            if thisN\['apply'].getValue():\n#                v.setValueAt(pValue, f)\n \n#Set a Trigger on odd frames of the frame Range        \ndef odd(frameRange, aValue, pValue, interpolation):\n    for f in range(frameRange\[0],frameRange\[1] + 1):\n        if(f%2 != 0):\n            v.setValueAt(aValue, f)\n        elif thisN\['apply'].getValue():\n            v.setValueAt(pValue, f)\n            \n#Set a Trigger on every given number frames. Starting on any frame. Even out of the frame range.   \ndef everyX(frame, frameRange, aValue, pValue, pValueOffset, interpolation, number, length):\n    for f in range(frame, frameRange\[1] + 1, number):\n        for num in range(0,length):\n            v.setValueAt(aValue, f + num)\n        if thisN\['apply'].getValue():\n            v.setValueAt(pValue, f - pValueOffset)\n            if((f + length) < (frameRange\[1] + 1)):\n                v.setValueAt(pValue, f + length + pValueOffset -1)\n\n        \n#Get project and nuke variables\nthisN = nuke.thisNode()\np = re.compile('^-?\[0-9]+\$')\nn = nuke.Root()\nframeRng = \[]\nprint (n.firstFrame(), thisN\['startFrame'].getValue(), thisN\['endFrame'].getValue())\nif (thisN\['frameRng'].getValue() == 1):\n    frameRng.append(int(thisN\['startFrame'].getValue()))\n    frameRng.append(int(thisN\['endFrame'].getValue()))\nelse:\n    frameRng.append(n.firstFrame())\n    frameRng.append(n.lastFrame())\nfr = nuke.frame()\n\n#Get Trigger information\naVal = thisN\['aValue'].getValue()\npVal = thisN\['pValue'].getValue()\npVOffset = thisN\['pValueOffset'].getValue()\nl = int(thisN\['length'].getValue())\ninter = thisN\['interpolation'].getValue()\nt = thisN\['type'].getValue()\n\n#Set expression\nexpr = 0\nif (thisN\['expression'].getValue() != \"\") and p.match(thisN\['expression'].getValue()):\n    expr = int(thisN\['expression'].getValue())\n\nif t == 0:\n    #Create and set Trigger\n    nMult = nuke.nodes.Multiply()\n    nMult.setXYpos(thisN.xpos()+100,thisN.ypos()+50)\n    v = nMult\['value']\n    v.setAnimated()\n    \n    default(fr, aVal, pVal, pVOffset, l, inter)\n    animC = v.animation(0).keys()\n    setInterpolation(animC, inter)\n    nMult.setName('Trigger_On', uncollide=True)\n    if (thisN\['labelOn'].getValue() == 1):\n        nMult\['label'].setValue(\"Frame \" + str(fr) + \"\\\\n Active for \" + str(l) + \" frames\")\n\nelif t == 1:\n    #Create and set Trigger\n    nMult = nuke.nodes.Multiply()\n    nMult.setXYpos(thisN.xpos()+100,thisN.ypos()+50)\n    v = nMult\['value']\n    v.setAnimated()\n    \n    multiple(frameRng, aVal, pVal, 1, inter,2)\n    nMult.setName('Trigger_On', uncollide=True)\n    if (thisN\['labelOn'].getValue() == 1):\n        nMult\['label'].setValue(\" even frames\")\n    \nelif t == 2:\n    #Create and set Trigger\n    nMult = nuke.nodes.Multiply()\n    nMult.setXYpos(thisN.xpos()+100,thisN.ypos()+50)\n    v = nMult\['value']\n    v.setAnimated()\n    \n    odd(frameRng, aVal, pVal, inter)\n    nMult.setName('Trigger_On', uncollide=True)\n    if (thisN\['labelOn'].getValue() == 1):\n        nMult\['label'].setValue(\" odd frames\")\n\nelif t == 3:\n    if (thisN\['expression'].getValue() != \"\") and p.match(thisN\['expression'].getValue()):\n        if (int(thisN\['expression'].getValue()) != 1): \n            if ((pVOffset*2) <= expr):\n                #Create and set Trigger\n                nMult = nuke.nodes.Multiply()\n                nMult.setXYpos(thisN.xpos()+100,thisN.ypos()+50)\n                v = nMult\['value']\n                v.setAnimated()\n                \n                multiple(frameRng, aVal, pVal, pVOffset, inter, expr)\n                nMult.setName('Trigger_On', uncollide=True)\n                if (thisN\['labelOn'].getValue() == 1):\n                    nMult\['label'].setValue(\"frames multiple of \" + str(expr))\n            else:\n                nuke.message('For this multiple, you need to decrease the passive offset value.')\n        else:\n            nuke.message('Multiple has to be higher than 1')\n    else:\n        nuke.message('Introduce a number X or choose another type of Trigger')\n        \nelif t == 4:\n    if (thisN\['expression'].getValue() != \"\") and p.match(thisN\['expression'].getValue()):\n        if (int(thisN\['expression'].getValue()) != 1): \n            if ((pVOffset*2) <= expr):\n                if (l < expr):\n                    #Create and set Trigger\n                    nMult = nuke.nodes.Multiply()\n                    nMult.setXYpos(thisN.xpos()+100,thisN.ypos()+50)\n                    v = nMult\['value']\n                    v.setAnimated()\n                    if (thisN\['frameRng'].getValue() == 1):\n                        fr = int(thisN\['startFrame'].getValue())\n                    everyX(fr,frameRng, aVal, pVal, pVOffset, inter, expr, l)\n                    nMult.setName('Trigger_On', uncollide=True)\n                    if (thisN\['labelOn'].getValue() == 1):\n                        nMult\['label'].setValue(\"every \" + str(expr) + \" frames\" + \"\\\\n\" + \"from frame \" + str(fr) + \"\\\\n\" + \"Active for \" + str(l) + \" frames\")\n                else:\n                    nuke.message('Length of activity has to be lower than X')\n            else:\n                nuke.message('For this multiple, you need to decrease the passive offset value.')\n        else:\n            nuke.message('Multiple has to be higher than 1')\n    else:\n        nuke.message('Introduce a number X or choose another type of Trigger')  " +STARTLINE}
 addUserKnob {6 labelOn l "Display info" t "Displays information on node's label" -STARTLINE}
 labelOn true
 addUserKnob {26 _1 l "" +STARTLINE}
 addUserKnob {26 version_author l "" +STARTLINE T "<span style=\"color:#757575\"><br/><b>MF_PulseGenerator v1.0</b> - <a href=\"http://www.manuelferia.com\" style=\"color:#757575;text-decoration: none;\">manuelferia.com</a>, April 2023</span>"}
 addUserKnob {20 help_1 l help}
 addUserKnob {26 howto l "<b>How to use</b>"}
 addUserKnob {26 explanation l "" +STARTLINE T "1.- Set the active value of the pulse.\n\n2.- Set the number of frames that the pulse is active. (length)\n\n3.- Set the passive value of the pulse. Check Apply to use this setting.\n\n4.- Select passive value offset. By default 1. This is the number of frames between active and passive value.\n\n5.- Select the type of pulse you will apply.\n\n     - default: Creates a one event pulse.\n\n     - even: Creates a pulse on even numbers on the frame range.\n\n     - odd: Creates a pulse on odd numbers on the frame range.\n\n     - multiple of X: Creates a pulse on frames multiples of the number introduced.\n\n     - every X frames: Creates a pulse that starts on the current frame \n                                       and  repeats every X frames. X is the number introduced.\n\n6.- Select the type of interpolation you want on the keyframes.\n\n7.- Select a Frame Range. By default, it will get the project settings frame range.\n\n8.- Press the \"Generate Pulse\" button."}
}