LightWrap_Simple.py

# -*- coding: utf-8 -*-
# DO NOT EDIT THIS FILE
# This file was automatically generated by Natron PyPlug exporter version 10.

# Hand-written code should be added in a separate file named LightWrap_SimpleExt.py
# See http://natron.readthedocs.org/en/master/groups.html#adding-hand-written-code-callbacks-etc
# Note that Viewers are never exported

import NatronEngine
import sys

# Try to import the extensions file where callbacks and hand-written code should be located.
try:
    from LightWrap_SimpleExt import *
except ImportError:
    pass

def getPluginID():
    return "natron.comunity.plugins.lightwrap_simple"

def getLabel():
    return "LightWrap_Simple"

def getVersion():
    return 1

def getIconPath():
    return "LightWrap_Simple.png"

def getGrouping():
    return "Community/Draw"

def getPluginDescription():
    return "Alternative to built-in LightWrap plugin, simpler to use, also it as an option to dilate wrap to get a bigger effect..."

def createInstance(app,group):
    # Create all nodes in the group

    # Create the parameters of the group node the same way we did for all internal nodes
    lastNode = group

    # Create the user parameters
    lastNode.userNatron = lastNode.createPageParam("userNatron", "Controls")
    param = lastNode.createDouble2DParam("Blur1size", "BlurWarp")
    param.setMinimum(0, 0)
    param.setMaximum(1000, 0)
    param.setDisplayMinimum(0, 0)
    param.setDisplayMaximum(100, 0)
    param.setMinimum(0, 1)
    param.setMaximum(1000, 1)
    param.setDisplayMinimum(0, 1)
    param.setDisplayMaximum(100, 1)

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("Size (diameter) of the filter kernel, in pixel units (>=0). The standard deviation of the corresponding Gaussian is size/2.4. No filter is applied if size < 1.2.")
    param.setAddNewLine(True)
    param.setAnimationEnabled(True)
    param.setValue(30, 0)
    param.setValue(30, 1)
    lastNode.Blur1size = param
    del param

    param = lastNode.createInt2DParam("Dilate1size", "Dilate Warp")
    param.setMinimum(-1000, 0)
    param.setMaximum(1000, 0)
    param.setDisplayMinimum(0, 0)
    param.setDisplayMaximum(100, 0)
    param.setDefaultValue(0, 0)
    param.restoreDefaultValue(0)
    param.setMinimum(-1000, 1)
    param.setMaximum(1000, 1)
    param.setDisplayMinimum(0, 1)
    param.setDisplayMaximum(100, 1)
    param.setDefaultValue(0, 1)
    param.restoreDefaultValue(1)

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("Width/height of the rectangular structuring element is 2*size+1, in pixel units (>=0).")
    param.setAddNewLine(True)
    param.setAnimationEnabled(True)
    param.setValue(10, 0)
    param.setValue(10, 1)
    lastNode.Dilate1size = param
    del param

    param = lastNode.createDouble2DParam("Blur2size", "Blur Background")
    param.setMinimum(0, 0)
    param.setMaximum(1000, 0)
    param.setDisplayMinimum(0, 0)
    param.setDisplayMaximum(100, 0)
    param.setMinimum(0, 1)
    param.setMaximum(1000, 1)
    param.setDisplayMinimum(0, 1)
    param.setDisplayMaximum(100, 1)

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("Size (diameter) of the filter kernel, in pixel units (>=0). The standard deviation of the corresponding Gaussian is size/2.4. No filter is applied if size < 1.2.")
    param.setAddNewLine(True)
    param.setAnimationEnabled(True)
    param.setValue(30, 0)
    param.setValue(30, 1)
    lastNode.Blur2size = param
    del param

    param = lastNode.createStringParam("Extras", "Extras")
    param.setType(NatronEngine.StringParam.TypeEnum.eStringTypeLabel)

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(True)
    param.setEvaluateOnChange(False)
    param.setAnimationEnabled(False)
    lastNode.Extras = param
    del param

    param = lastNode.createChoiceParam("Merge3operation", "Operation")
    param.setDefaultValue(28)
    param.restoreDefaultValue()

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(True)
    param.setAnimationEnabled(True)
    lastNode.Merge3operation = param
    del param

    param = lastNode.createBooleanParam("testpat", "Test Pattern")

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(False)
    param.setAnimationEnabled(True)
    lastNode.testpat = param
    del param

    param = lastNode.createBooleanParam("warp_only", "Show warp")

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("Output only the lightwrap effect")
    param.setAddNewLine(False)
    param.setAnimationEnabled(True)
    lastNode.warp_only = param
    del param

    param = lastNode.createSeparatorParam("sep", "")

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(True)
    param.setPersistent(False)
    param.setEvaluateOnChange(False)
    lastNode.sep = param
    del param

    param = lastNode.createBooleanParam("Merge3enableMask_Mask", "Mask")

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(True)
    param.setAnimationEnabled(False)
    lastNode.Merge3enableMask_Mask = param
    del param

    param = lastNode.createChoiceParam("Merge3maskChannel_Mask", "")
    param.setDefaultValue(4)
    param.restoreDefaultValue()

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(False)
    param.setAnimationEnabled(False)
    lastNode.Merge3maskChannel_Mask = param
    del param

    param = lastNode.createBooleanParam("Merge3maskInvert", "Invert Mask")

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("")
    param.setAddNewLine(False)
    param.setAnimationEnabled(False)
    lastNode.Merge3maskInvert = param
    del param

    param = lastNode.createDoubleParam("Merge3mix", "Mix")
    param.setMinimum(0, 0)
    param.setMaximum(1, 0)
    param.setDisplayMinimum(0, 0)
    param.setDisplayMaximum(1, 0)

    # Add the param to the page
    lastNode.userNatron.addParam(param)

    # Set param properties
    param.setHelp("Mix factor between the original and the transformed image")
    param.setAddNewLine(True)
    param.setAnimationEnabled(True)
    param.setValue(1, 0)
    lastNode.Merge3mix = param
    del param

    # Refresh the GUI with the newly created parameters
    lastNode.setPagesOrder(['userNatron', 'Node', 'Settings'])
    lastNode.refreshUserParamsGUI()
    del lastNode

    # Start of node "Output1"
    lastNode = app.createNode("fr.inria.built-in.Output", 1, group)
    lastNode.setLabel("Output1")
    lastNode.setPosition(779, 874)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupOutput1 = lastNode

    del lastNode
    # End of node "Output1"

    # Start of node "Input1"
    lastNode = app.createNode("fr.inria.built-in.Input", 1, group)
    lastNode.setScriptName("Input1")
    lastNode.setLabel("Source")
    lastNode.setPosition(568, -89)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.5, 0.2)
    groupInput1 = lastNode

    del lastNode
    # End of node "Input1"

    # Start of node "Blur1"
    lastNode = app.createNode("net.sf.cimg.CImgBlur", 3, group)
    lastNode.setScriptName("Blur1")
    lastNode.setLabel("BlurAlpha")
    lastNode.setPosition(569, 210)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.8, 0.5, 0.3)
    groupBlur1 = lastNode

    param = lastNode.getParam("NatronOfxParamProcessR")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessG")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessB")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessA")
    if param is not None:
        param.setValue(True)
        del param

    param = lastNode.getParam("size")
    if param is not None:
        param.setValue(30, 0)
        param.setValue(30, 1)
        del param

    param = lastNode.getParam("uniform")
    if param is not None:
        param.setValue(True)
        del param

    param = lastNode.getParam("boundary")
    if param is not None:
        param.set("Nearest")
        del param

    param = lastNode.getParam("filter")
    if param is not None:
        param.set("Quasi-Gaussian")
        del param

    param = lastNode.getParam("expandRoD")
    if param is not None:
        param.setValue(False)
        del param

    del lastNode
    # End of node "Blur1"

    # Start of node "Input1_1"
    lastNode = app.createNode("fr.inria.built-in.Input", 1, group)
    lastNode.setScriptName("Input1_1")
    lastNode.setLabel("Background")
    lastNode.setPosition(-241, -47)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.5, 0.2)
    groupInput1_1 = lastNode

    del lastNode
    # End of node "Input1_1"

    # Start of node "Blur2"
    lastNode = app.createNode("net.sf.cimg.CImgBlur", 3, group)
    lastNode.setScriptName("Blur2")
    lastNode.setLabel("BlurBG")
    lastNode.setPosition(-241, 296)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.8, 0.5, 0.3)
    groupBlur2 = lastNode

    param = lastNode.getParam("NatronOfxParamProcessA")
    if param is not None:
        param.setValue(True)
        del param

    param = lastNode.getParam("size")
    if param is not None:
        param.setValue(30, 0)
        param.setValue(30, 1)
        del param

    param = lastNode.getParam("uniform")
    if param is not None:
        param.setValue(True)
        del param

    param = lastNode.getParam("boundary")
    if param is not None:
        param.set("Nearest")
        del param

    param = lastNode.getParam("filter")
    if param is not None:
        param.set("Quasi-Gaussian")
        del param

    param = lastNode.getParam("expandRoD")
    if param is not None:
        param.setValue(False)
        del param

    del lastNode
    # End of node "Blur2"

    # Start of node "CheckerBoard1"
    lastNode = app.createNode("net.sf.openfx.CheckerBoardPlugin", 1, group)
    lastNode.setScriptName("CheckerBoard1")
    lastNode.setLabel("CheckerBoard1")
    lastNode.setPosition(-588, -47)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.5, 0.2)
    groupCheckerBoard1 = lastNode

    param = lastNode.getParam("NatronParamFormatChoice")
    if param is not None:
        param.set("PC_Video")
        del param

    del lastNode
    # End of node "CheckerBoard1"

    # Start of node "Switch1"
    lastNode = app.createNode("net.sf.openfx.switchPlugin", 1, group)
    lastNode.setScriptName("Switch1")
    lastNode.setLabel("Switch1")
    lastNode.setPosition(-241, 161)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.37, 0.776)
    groupSwitch1 = lastNode

    param = lastNode.getParam("which")
    if param is not None:
        param.setValue(0, 0)
        del param

    del lastNode
    # End of node "Switch1"

    # Start of node "Dot1"
    lastNode = app.createNode("fr.inria.built-in.Dot", 1, group)
    lastNode.setScriptName("Dot1")
    lastNode.setLabel("Dot1")
    lastNode.setPosition(-543, 175)
    lastNode.setSize(15, 15)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupDot1 = lastNode

    del lastNode
    # End of node "Dot1"

    # Start of node "Merge2"
    lastNode = app.createNode("net.sf.openfx.MergePlugin", 1, group)
    lastNode.setScriptName("Merge2")
    lastNode.setLabel("ForceRGBA")
    lastNode.setPosition(-241, 42)
    lastNode.setSize(104, 56)
    lastNode.setColor(0.3, 0.37, 0.776)
    groupMerge2 = lastNode

    param = lastNode.getParam("NatronOfxParamStringSublabelName")
    if param is not None:
        param.setValue("copy")
        del param

    param = lastNode.getParam("operation")
    if param is not None:
        param.set("copy")
        del param

    param = lastNode.getParam("userTextArea")
    if param is not None:
        param.setValue("<Natron>(copy)</Natron>")
        del param

    del lastNode
    # End of node "Merge2"

    # Start of node "Dot2"
    lastNode = app.createNode("fr.inria.built-in.Dot", 1, group)
    lastNode.setScriptName("Dot2")
    lastNode.setLabel("Dot2")
    lastNode.setPosition(-543, 68)
    lastNode.setSize(15, 15)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupDot2 = lastNode

    del lastNode
    # End of node "Dot2"

    # Start of node "Dilate1"
    lastNode = app.createNode("net.sf.cimg.CImgDilate", 2, group)
    lastNode.setScriptName("Dilate1")
    lastNode.setLabel("DilateWarp")
    lastNode.setPosition(570, 125)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.8, 0.5, 0.3)
    groupDilate1 = lastNode

    param = lastNode.getParam("NatronOfxParamProcessR")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessG")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessB")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("size")
    if param is not None:
        param.setValue(-10, 0)
        param.setValue(-10, 1)
        del param

    param = lastNode.getParam("premult")
    if param is not None:
        param.setValue(True)
        del param

    del lastNode
    # End of node "Dilate1"

    # Start of node "Dot3"
    lastNode = app.createNode("fr.inria.built-in.Dot", 1, group)
    lastNode.setScriptName("Dot3")
    lastNode.setLabel("Dot3")
    lastNode.setPosition(613, 14)
    lastNode.setSize(15, 15)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupDot3 = lastNode

    del lastNode
    # End of node "Dot3"

    # Start of node "Invert2"
    lastNode = app.createNode("net.sf.openfx.Invert", 2, group)
    lastNode.setScriptName("Invert2")
    lastNode.setLabel("Invert2")
    lastNode.setPosition(569, 299)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.48, 0.66, 1)
    groupInvert2 = lastNode

    param = lastNode.getParam("NatronOfxParamProcessR")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessG")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("NatronOfxParamProcessB")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("premult")
    if param is not None:
        param.setValue(True)
        del param

    del lastNode
    # End of node "Invert2"

    # Start of node "Dot4"
    lastNode = app.createNode("fr.inria.built-in.Dot", 1, group)
    lastNode.setScriptName("Dot4")
    lastNode.setLabel("Dot4")
    lastNode.setPosition(341, 14)
    lastNode.setSize(15, 15)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupDot4 = lastNode

    del lastNode
    # End of node "Dot4"

    # Start of node "Merge1"
    lastNode = app.createNode("net.sf.openfx.MergePlugin", 1, group)
    lastNode.setScriptName("Merge1")
    lastNode.setLabel("Merge1")
    lastNode.setPosition(296, 287)
    lastNode.setSize(104, 56)
    lastNode.setColor(0.3, 0.37, 0.776)
    groupMerge1 = lastNode

    param = lastNode.getParam("NatronOfxParamStringSublabelName")
    if param is not None:
        param.setValue("multiply")
        del param

    param = lastNode.getParam("operation")
    if param is not None:
        param.set("multiply")
        del param

    param = lastNode.getParam("AChannelsR")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("AChannelsG")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("AChannelsB")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("BChannelsR")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("BChannelsG")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("BChannelsB")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("OutputChannelsR")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("OutputChannelsG")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("OutputChannelsB")
    if param is not None:
        param.setValue(False)
        del param

    param = lastNode.getParam("userTextArea")
    if param is not None:
        param.setValue("<Natron>(multiply)</Natron>")
        del param

    del lastNode
    # End of node "Merge1"

    # Start of node "Shuffle1"
    lastNode = app.createNode("net.sf.openfx.ShufflePlugin", 2, group)
    lastNode.setScriptName("Shuffle1")
    lastNode.setLabel("Shuffle1")
    lastNode.setPosition(-9, 296)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.6, 0.24, 0.39)
    groupShuffle1 = lastNode

    param = lastNode.getParam("outputA")
    if param is not None:
        param.set("B.uk.co.thefoundry.OfxImagePlaneColour.A")
        del param

    del lastNode
    # End of node "Shuffle1"

    # Start of node "Premult1"
    lastNode = app.createNode("net.sf.openfx.Premult", 2, group)
    lastNode.setScriptName("Premult1")
    lastNode.setLabel("Premult1")
    lastNode.setPosition(-9, 427)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.37, 0.776)
    groupPremult1 = lastNode

    del lastNode
    # End of node "Premult1"

    # Start of node "Merge3"
    lastNode = app.createNode("net.sf.openfx.MergePlugin", 1, group)
    lastNode.setScriptName("Merge3")
    lastNode.setLabel("Final_MIX")
    lastNode.setPosition(780, 418)
    lastNode.setSize(104, 66)
    lastNode.setColor(0.3, 0.37, 0.776)
    groupMerge3 = lastNode

    param = lastNode.getParam("mix")
    if param is not None:
        param.setValue(1, 0)
        del param

    param = lastNode.getParam("userTextArea")
    if param is not None:
        param.setValue("<Natron>(over)</Natron>")
        del param

    del lastNode
    # End of node "Merge3"

    # Start of node "Dot5"
    lastNode = app.createNode("fr.inria.built-in.Dot", 1, group)
    lastNode.setScriptName("Dot5")
    lastNode.setLabel("Dot5")
    lastNode.setPosition(825, -78)
    lastNode.setSize(15, 15)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupDot5 = lastNode

    del lastNode
    # End of node "Dot5"

    # Start of node "Mask"
    lastNode = app.createNode("fr.inria.built-in.Input", 1, group)
    lastNode.setScriptName("Mask")
    lastNode.setLabel("Mask")
    lastNode.setPosition(1141, 430)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.5, 0.2)
    groupMask = lastNode

    param = lastNode.getParam("optional")
    if param is not None:
        param.setValue(True)
        del param

    param = lastNode.getParam("isMask")
    if param is not None:
        param.setValue(True)
        del param

    del lastNode
    # End of node "Mask"

    # Start of node "Switch2"
    lastNode = app.createNode("net.sf.openfx.switchPlugin", 1, group)
    lastNode.setScriptName("Switch2")
    lastNode.setLabel("Switch2")
    lastNode.setPosition(780, 597)
    lastNode.setSize(104, 43)
    lastNode.setColor(0.3, 0.37, 0.776)
    groupSwitch2 = lastNode

    param = lastNode.getParam("which")
    if param is not None:
        param.setValue(0, 0)
        del param

    del lastNode
    # End of node "Switch2"

    # Start of node "Dot6"
    lastNode = app.createNode("fr.inria.built-in.Dot", 1, group)
    lastNode.setScriptName("Dot6")
    lastNode.setLabel("Dot6")
    lastNode.setPosition(36, 611)
    lastNode.setSize(15, 15)
    lastNode.setColor(0.7, 0.7, 0.7)
    groupDot6 = lastNode

    del lastNode
    # End of node "Dot6"

    # Now that all nodes are created we can connect them together, restore expressions
    groupOutput1.connectInput(0, groupSwitch2)
    groupBlur1.connectInput(0, groupDilate1)
    groupBlur2.connectInput(0, groupSwitch1)
    groupCheckerBoard1.connectInput(0, groupInput1_1)
    groupSwitch1.connectInput(0, groupMerge2)
    groupSwitch1.connectInput(1, groupDot1)
    groupDot1.connectInput(0, groupDot2)
    groupMerge2.connectInput(0, groupDot2)
    groupMerge2.connectInput(1, groupInput1_1)
    groupDot2.connectInput(0, groupCheckerBoard1)
    groupDilate1.connectInput(0, groupDot3)
    groupDot3.connectInput(0, groupInput1)
    groupInvert2.connectInput(0, groupBlur1)
    groupDot4.connectInput(0, groupDot3)
    groupMerge1.connectInput(0, groupInvert2)
    groupMerge1.connectInput(1, groupDot4)
    groupShuffle1.connectInput(0, groupMerge1)
    groupShuffle1.connectInput(1, groupBlur2)
    groupPremult1.connectInput(0, groupShuffle1)
    groupMerge3.connectInput(0, groupDot5)
    groupMerge3.connectInput(1, groupPremult1)
    groupMerge3.connectInput(2, groupMask)
    groupDot5.connectInput(0, groupInput1)
    groupSwitch2.connectInput(0, groupMerge3)
    groupSwitch2.connectInput(1, groupDot6)
    groupDot6.connectInput(0, groupPremult1)

    param = groupBlur1.getParam("size")
    param.setExpression("thisGroup.Blur1size.get()[dimension]", False, 0)
    param.setExpression("thisGroup.Blur1size.get()[dimension]", False, 1)
    del param
    param = groupBlur2.getParam("size")
    param.setExpression("thisGroup.Blur2size.get()[dimension]", False, 0)
    param.setExpression("thisGroup.Blur2size.get()[dimension]", False, 1)
    del param
    param = groupSwitch1.getParam("which")
    param.setExpression("thisGroup.testpat.get()", False, 0)
    del param
    param = groupDilate1.getParam("size")
    param.setExpression("-thisGroup.Dilate1size.get()[dimension]", False, 0)
    param.setExpression("-thisGroup.Dilate1size.get()[dimension]", False, 1)
    del param
    param = groupMerge3.getParam("operation")
    group.getParam("Merge3operation").setAsAlias(param)
    del param
    param = groupMerge3.getParam("maskInvert")
    group.getParam("Merge3maskInvert").setAsAlias(param)
    del param
    param = groupMerge3.getParam("mix")
    param.setExpression("thisGroup.Merge3mix.get()", False, 0)
    del param
    param = groupMerge3.getParam("enableMask_Mask")
    group.getParam("Merge3enableMask_Mask").setAsAlias(param)
    del param
    param = groupMerge3.getParam("maskChannel_Mask")
    group.getParam("Merge3maskChannel_Mask").setAsAlias(param)
    del param
    param = groupSwitch2.getParam("which")
    param.setExpression("thisGroup.warp_only.get()", False, 0)
    del param

    try:
        extModule = sys.modules["LightWrap_SimpleExt"]
    except KeyError:
        extModule = None
    if extModule is not None and hasattr(extModule ,"createInstanceExt") and hasattr(extModule.createInstanceExt,"__call__"):
        extModule.createInstanceExt(app,group)