Stop Foot Sliding With MotionBuilder and Python

Posted On June 11, 2018

Update

June 20 2022 –

It’s been a while since I have checked the blog. 🙁 Back in January someone posted a comment asking if i ever updated this script/tool to work with newer MotionBuilders. I have now, sorry for the wait.
The fix was a quick change, Motionbuilder changed ‘FBModelTransformationMatrix’ to ‘FBModelTransformationType’ years ago, I think I originally developed this tool on the last version of Mobu to support ‘FBModelTransformationMatrix’. Again, sorry for the late reply.

Oct. 29 2018 –

For the script to work in MotionBuilder 2018 I had to make a slight change. You can down load a new version of StopFootSliding here, I also made the changes to the script below in the original post.

The only difference between to last release and this one is that I removed an FBContainer, which was just a visual element and had no functional baring on the tool. The attribute FBContainer is no longer supported in MotionBuilder 2018, The new version is FBVisualContainer().

StopFootSliding v1.0 was giving this error in MotionBuilder 2018:

“cInfo = fb.FBContainer() AttributeError: ‘module’ object has no attribute ‘FBContainer'”.

Thanks Andy.HH for bringing this to my attention.

After exploring FBVector3d() and creating the Animated Align post, I started to think “Hey, why not use that same process and stop a foot from sliding!”. Using a reference frame we can grab the translation and rotation of an object and then over a range of time have that object match it referenced translations. I decided to work with layers when preventing foot sliding as to not destroy the original data.

Here is a quick demo of the tool (sorry for the poor audio).

You can down load the “StopFoorSliding” tool here.

Here is the script with my notes:

import pyfbsdk as fb
import pyfbsdk_additions as fba
 
def GetCurrentFrame():
    Frame = fb.FBSystem().LocalTime.GetFrame()
    return Frame
 
def GotoFrame(time):
    t = fb.FBTime(0, 0, 0, time, 0)
    fb.FBPlayerControl().Goto(t)
 
##Check For Conflicts In User's Desired Frame Ranges
def FrameCheck():
    ##Does Blend In Conflict With Start Frame
    if nBlendIn.Value > nStart.Value:
        fb.FBMessageBox( "Frame Input Error", "Blend In Frame Is Higher Than The Start Frame", "OK" )
        return False
    ##Does Start Frame Conflict Wtih End Frame
    if nEnd.Value < nStart.Value:
        fb.FBMessageBox( "Frame Input Error", "End Frame Is Lower Than The Start Frame", "OK" )
        return False
    ##Does Blend Out Frame Conflict With End Frame
    if nBlendOut.Value < nEnd.Value:
        fb.FBMessageBox( "Frame Input Error", "Blend Out Frame Is Lower Than The End Frame", "OK" )
        return False
    else:
        return True
 
##Get Selected Object
def GetSelObj():
    ModelList = fb.FBModelList()
    fb.FBGetSelectedModels(ModelList, None, True, True)
    if len(ModelList) == 1:
        for Model in ModelList:
            SelObjName = Model.LongName
        return SelObjName
    else:
        fb.FBMessageBox( "Object Select Error", "Please Selecte An Object", "OK" )
 
##Get Layer Count
def GetLayerCount():
    return fb.FBSystem().CurrentTake.GetLayerCount()
 
##Zero The Translation and Rotation Of The Selected Object
def ZeroTRTransforms(YourObject):
    YourObject.Translation = fb.FBVector3d()
    YourObject.Rotation = fb.FBVector3d()
 
##Create The Layer We Will Work On
def CreateLayer():
    SelObj = GetSelObj()#.rsplit(':', 2)[2]
    fb.FBSystem().CurrentTake.CreateNewLayer()
    ##Set the new layer as the current one (Keys will be added to that layer)
    lCount = fb.FBSystem().CurrentTake.GetLayerCount()
    ##Name the Layer to be "Selected Object Name: Start Frame to End Frame" (ie. LeftHeelPivot: 100-150)
    fb.FBSystem().CurrentTake.GetLayer(lCount-1).Name = SelObj + " " + str( int(nStart.Value) ) + "-" + str( int(nEnd.Value) )
    fb.FBSystem().CurrentTake.SetCurrentLayer(lCount-1)
 
##Enure That Blend In, Ref Pose and Blend Out Translation And Roation Are Preserved
def PreserveFrames():
    ##Create A List Of Frame That We Want ZeroKeys To Be Set On
    ZeroFrames = ( int(nBlendIn.Value), int(nRef.Value), int(nBlendOut.Value) )
    ##Get Selected Object
    YourObject = GetSelObj()
    for FrameNumber in ZeroFrames:
        GotoFrame(FrameNumber)
        fb.FBPlayerControl().Key()
 
##For Each Frame Between The Defind Start Frame And End Frame We Will Create A Key
##And Match The Translation And Rotation To That Of The Values On The RefPose Frame
def MatchRefPose():
    GotoFrame( int(nRef.Value) )
    MyObject = GetSelObj()
    RefObjTrans = fb.FBVector3d()
    RefObjRot = fb.FBVector3d()
    fb.FBFindModelByLabelName(MyObject).GetVector (RefObjTrans, fb.FBModelTransformationType.kModelTranslation, False)
    fb.FBFindModelByLabelName(MyObject).GetVector (RefObjRot, fb.FBModelTransformationType.kModelRotation, False)
    GotoFrame( int(nStart.Value) )
 
    lval = ( int(nEnd.Value) - int(nStart.Value) )
    lprogsum = 1
    lpercent = (100.0/lval)
 
    for time in range ( int(nStart.Value), int(nEnd.Value) ):
        if time == int(nRef.Value):
            pass
        else:
            GotoFrame(time)
            if bTR.State == 1:
                fb.FBFindModelByLabelName(MyObject).Translation = RefObjTrans
                fb.FBFindModelByLabelName(MyObject).Rotation = RefObjRot
                fb.FBPlayerControl().Key()
            if bTrans.State == 1:
                if bTX.State == 1:
                    lTX = RefObjTrans[0]
                if bTX.State != 1:
                    lTX = fb.FBFindModelByLabelName(MyObject).Translation[0]
                if bTY.State == 1:
                    lTY = RefObjTrans[1]
                if bTY.State != 1:
                    lTY = fb.FBFindModelByLabelName(MyObject).Translation[1]
                if bTZ.State == 1:
                    lTZ = RefObjTrans[2]
                if bTZ.State != 1:
                    lTZ = fb.FBFindModelByLabelName(MyObject).Translation[2]
                fb.FBFindModelByLabelName(MyObject).Translation = fb.FBVector3d(lTX, lTY, lTZ)
                fb.FBPlayerControl().Key()
            if bRot.State == 1:
                if bRX.State == 1:
                    lRX = RefObjRot[0]
                if bRX.State != 1:
                    lRX = fb.FBFindModelByLabelName(MyObject).Rotation[0]
                if bRY.State == 1:
                    lRY = RefObjRot[1]
                if bRY.State != 1:
                    lRY = fb.FBFindModelByLabelName(MyObject).Rotation[1]
                if bRZ.State == 1:
                    lRZ = RefObjRot[2]
                if bRZ.State != 1:
                    lRZ = fb.FBFindModelByLabelName(MyObject).Rotation[2]
                fb.FBFindModelByLabelName(MyObject).Rotation = fb.FBVector3d(lRX, lRY, lRZ)
                fb.FBPlayerControl().Key()
 
##UI Starts Here
 
hBlendIn = fb.FBLabel()
nBlendIn = fb.FBEditNumber()
bBlendIn = fb.FBButton()
hBlendOut = fb.FBLabel()
nBlendOut = fb.FBEditNumber()
bBlendOut = fb.FBButton()
hStart = fb.FBLabel()
nStart = fb.FBEditNumber()
bStart = fb.FBButton()
hEnd = fb.FBLabel()
nEnd = fb.FBEditNumber()
bEnd = fb.FBButton()
hRef = fb.FBLabel()
nRef = fb.FBEditNumber()
bRef = fb.FBButton()
bTR = fb.FBButton()
bTrans = fb.FBButton()
bTX = fb.FBButton()
bTY = fb.FBButton()
bTZ = fb.FBButton()
bRot = fb.FBButton()
bRX = fb.FBButton()
bRY = fb.FBButton()
bRZ = fb.FBButton()
bStopSliding = fb.FBButton()
 
##Get Current Frame For Blend In Time
def bBlendInCallBack(control, event):
    CurrentFrame = GetCurrentFrame()
    nBlendIn.Value = CurrentFrame
 
##Get Current Frame For Blend Out Time
def bBlendOutCallBack(control, event):
    CurrentFrame = GetCurrentFrame()
    nBlendOut.Value = CurrentFrame
 
##Get Current Frame For Start Time
def bStartCallBack(control, event):
    CurrentFrame = GetCurrentFrame()
    nStart.Value = CurrentFrame
 
##Get Current Frame For End Time
def bBlendEndCallBack(control, event):
    CurrentFrame = GetCurrentFrame()
    nEnd.Value = CurrentFrame
 
##Get Current Frame For Reference Pose Time
def bBlendRefCallBack(control, event):
    CurrentFrame = GetCurrentFrame()
    nRef.Value = CurrentFrame
 
##Match Translation and Rotation Transforms
def bTRCallBack(control, event):
    if bTR.State == 1:
        bTrans.Enabled = bTX.Enabled = bTY.Enabled = bTZ.Enabled = bRot.Enabled = bRX.Enabled = bRY.Enabled = bRZ.Enabled = False
        bTrans.State = bTX.State = bTY.State = bTZ.State = bRot.State = bRX.State = bRY.State = bRZ.State = False
    else:
        bTrans.Enabled = bTX.Enabled = bTY.Enabled = bTZ.Enabled = bRot.Enabled = bRX.Enabled = bRY.Enabled = bRZ.Enabled = True
        bTrans.State = bTX.State = bTY.State = bTZ.State = True
 
##Match Translation Transforms
def bTransCallBack(control, event):
    if bTrans.State == 0:
        bTX.State = bTY.State = bTZ.State = 0
    else:
        bTX.State = bTY.State = bTZ.State = 1
 
##Match Rotation Transforms
def bRotCallBack(control, event):
    if bRot.State == 0:
        bRX.State = bRY.State = bRZ.State = 0
    else:
        bRX.State = bRY.State = bRZ.State = 1
 
##Stop Sliding
def bStopSlidingCallBack(control, event):
    ##Check That There Is No Conflicts Between Inputs Blend In Frame, Start Frame, End Frame and Blend Out Frame
    Process = FrameCheck()
    if Process == True:
        if bTR.State != 1 and bTrans.State != 1 and bRot.State != 1:
            fb.FBMessageBox( "Transform Match Error", "Please Select Which Transforms To Match", "OK" )
            pass
        else:
            ##Get Users Frame They Were On When Executing The Stop Sliding Button
            OrgFrame = GetCurrentFrame()
            ##Get Layer Count So We Can Later Compare
            lOrgLayCount = GetLayerCount()
            ##If The User Has An Object Selected Create A New Layer Named After That Object And The Frames Inputed
            CreateLayer()
            ##Fail Safe To See If The Layer Was Created
            lCurLayCount = GetLayerCount()
            ##If All Is Good
            if lCurLayCount > lOrgLayCount:
                PreserveFrames()
                MatchRefPose()
                GotoFrame(OrgFrame)
            ##If Stop Sliding Layer Was Not Able To Be Created
            else:
               GotoFrame(OrgFrame)
               fb.FBMessageBox( "Could Not Process", "Please Ensure That A Foot Was Selected And Try Again", "OK" )
    else:
      fb.FBMessageBox( "Could Not Process", "Please Check The Frames You Have Inputed", "OK" )  
 
def PopulateTool(t):
    #populate regions here
 
    x = fb.FBAddRegionParam(5,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(10,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(105,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(15,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("hBlendIn","hBlendIn", x, y, w, h)
 
    t.SetControl("hBlendIn", hBlendIn)
    hBlendIn.Visible = True
    hBlendIn.ReadOnly = False
    hBlendIn.Enabled = True
    hBlendIn.Hint = ""
    hBlendIn.Caption = "Blend In Frame"
    hBlendIn.Style = fb.FBTextStyle.kFBTextStyleNone
    hBlendIn.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    hBlendIn.WordWrap = False
 
    x = fb.FBAddRegionParam(5,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("nBlendIn","nBlendIn", x, y, w, h)
 
    t.SetControl("nBlendIn", nBlendIn)
    nBlendIn.Visible = True
    nBlendIn.ReadOnly = False
    nBlendIn.Enabled = True
    nBlendIn.Hint = ""
    nBlendIn.Value = 0.000000
 
    x = fb.FBAddRegionParam(80,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bBlendIn","bBlendIn", x, y, w, h)
 
    t.SetControl("bBlendIn", bBlendIn)
    bBlendIn.Visible = True
    bBlendIn.ReadOnly = False
    bBlendIn.Enabled = True
    bBlendIn.Hint = "Use Current Frame"
    bBlendIn.Caption = "{]"
    bBlendIn.State = 0
    bBlendIn.Style = fb.FBButtonStyle.kFBPushButton
    bBlendIn.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    bBlendIn.Look = fb.FBButtonLook.kFBLookNormal
    bBlendIn.OnClick.Add(bBlendInCallBack) 
 
    x = fb.FBAddRegionParam(145,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(10,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(105,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(15,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("hBlendOut","hBlendOut", x, y, w, h)
 
    t.SetControl("hBlendOut", hBlendOut)
    hBlendOut.Visible = True
    hBlendOut.ReadOnly = False
    hBlendOut.Enabled = True
    hBlendOut.Hint = ""
    hBlendOut.Caption = "Blend Out Frame"
    hBlendOut.Style = fb.FBTextStyle.kFBTextStyleNone
    hBlendOut.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    hBlendOut.WordWrap = False
 
    x = fb.FBAddRegionParam(145,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("nBlendOut","nBlendOut", x, y, w, h)
 
    t.SetControl("nBlendOut", nBlendOut)
    nBlendOut.Visible = True
    nBlendOut.ReadOnly = False
    nBlendOut.Enabled = True
    nBlendOut.Hint = ""
    nBlendOut.Value = 0.000000
 
    x = fb.FBAddRegionParam(220,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bBlendOut","bBlendOut", x, y, w, h)
 
    t.SetControl("bBlendOut", bBlendOut)
    bBlendOut.Visible = True
    bBlendOut.ReadOnly = False
    bBlendOut.Enabled = True
    bBlendOut.Hint = "Use Current Frame"
    bBlendOut.Caption = "{]"
    bBlendOut.State = 0
    bBlendOut.Style = fb.FBButtonStyle.kFBPushButton
    bBlendOut.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    bBlendOut.Look = fb.FBButtonLook.kFBLookNormal
    bBlendOut.OnClick.Add(bBlendOutCallBack) 
 
    x = fb.FBAddRegionParam(5,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(65,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(105,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(15,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("hStart","hStart", x, y, w, h)
 
    t.SetControl("hStart", hStart)
    hStart.Visible = True
    hStart.ReadOnly = False
    hStart.Enabled = True
    hStart.Hint = ""
    hStart.Caption = "Start Frame"
    hStart.Style = fb.FBTextStyle.kFBTextStyleNone
    hStart.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    hStart.WordWrap = False
 
    x = fb.FBAddRegionParam(5,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(80,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("nStart","nStart", x, y, w, h)
 
    t.SetControl("nStart", nStart)
    nStart.Visible = True
    nStart.ReadOnly = False
    nStart.Enabled = True
    nStart.Hint = ""
    nStart.Value = 0.000000
 
    x = fb.FBAddRegionParam(80,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(80,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bStart","bStart", x, y, w, h)
 
    t.SetControl("bStart", bStart)
    bStart.Visible = True
    bStart.ReadOnly = False
    bStart.Enabled = True
    bStart.Hint = "Use Current Frame"
    bStart.Caption = "{]"
    bStart.State = 0
    bStart.Style = fb.FBButtonStyle.kFBPushButton
    bStart.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    bStart.Look = fb.FBButtonLook.kFBLookNormal
    bStart.OnClick.Add(bStartCallBack) 
 
    x = fb.FBAddRegionParam(145,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(65,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(105,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(15,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("hEnd","hEnd", x, y, w, h)
 
    t.SetControl("hEnd", hEnd)
    hEnd.Visible = True
    hEnd.ReadOnly = False
    hEnd.Enabled = True
    hEnd.Hint = ""
    hEnd.Caption = "End Frame"
    hEnd.Style = fb.FBTextStyle.kFBTextStyleNone
    hEnd.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    hEnd.WordWrap = False
 
    x = fb.FBAddRegionParam(145,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(80,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("nEnd","nEnd", x, y, w, h)
 
    t.SetControl("nEnd", nEnd)
    nEnd.Visible = True
    nEnd.ReadOnly = False
    nEnd.Enabled = True
    nEnd.Hint = ""
    nEnd.Value = 0.000000
 
    x = fb.FBAddRegionParam(220,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(80,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bEnd","bEnd", x, y, w, h)
 
    t.SetControl("bEnd", bEnd)
    bEnd.Visible = True
    bEnd.ReadOnly = False
    bEnd.Enabled = True
    bEnd.Hint = "Use Current Frame"
    bEnd.Caption = "{]"
    bEnd.State = 0
    bEnd.Style = fb.FBButtonStyle.kFBPushButton
    bEnd.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    bEnd.Look = fb.FBButtonLook.kFBLookNormal
    bEnd.OnClick.Add(bBlendEndCallBack) 
 
    x = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(120,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(105,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(15,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("hRef","hRef", x, y, w, h)
 
    t.SetControl("hRef", hRef)
    hRef.Visible = True
    hRef.ReadOnly = False
    hRef.Enabled = True
    hRef.Hint = ""
    hRef.Caption = "Reference Frame"
    hRef.Style = fb.FBTextStyle.kFBTextStyleBold
    hRef.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    hRef.WordWrap = False
 
    x = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(135,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(75,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("nRef","nRef", x, y, w, h)
 
    t.SetControl("nRef", nRef)
    nRef.Visible = True
    nRef.ReadOnly = False
    nRef.Enabled = True
    nRef.Hint = ""
    nRef.Value = 0.000000
 
    x = fb.FBAddRegionParam(150,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(135,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bRef","bRef", x, y, w, h)
 
    t.SetControl("bRef", bRef)
    bRef.Visible = True
    bRef.ReadOnly = False
    bRef.Enabled = True
    bRef.Hint = "Use Current Frame"
    bRef.Caption = "{]"
    bRef.State = 0
    bRef.Style = fb.FBButtonStyle.kFBPushButton
    bRef.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    bRef.Look = fb.FBButtonLook.kFBLookNormal
    bRef.OnClick.Add(bBlendRefCallBack) 
 
    x = fb.FBAddRegionParam(5,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(185,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(40,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bTR","bTR", x, y, w, h)
 
    t.SetControl("bTR", bTR)
    bTR.Visible = True
    bTR.ReadOnly = False
    bTR.Enabled = True
    bTR.Hint = "Affect Translation And Rotation"
    bTR.Caption = "TR"
    bTR.State = 0
    bTR.Style = fb.FBButtonStyle.kFBCheckbox
    bTR.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bTR.Look = fb.FBButtonLook.kFBLookNormal
    bTR.OnClick.Add(bTRCallBack) 
 
    x = fb.FBAddRegionParam(60,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(185,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(90,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bTrans","bTrans", x, y, w, h)
 
    t.SetControl("bTrans", bTrans)
    bTrans.Visible = True
    bTrans.ReadOnly = False
    bTrans.Enabled = True
    bTrans.Hint = "Affect Translation"
    bTrans.Caption = "Translation"
    bTrans.State = 1
    bTrans.Style = fb.FBButtonStyle.kFBCheckbox
    bTrans.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bTrans.Look = fb.FBButtonLook.kFBLookNormal
    bTrans.OnClick.Add(bTransCallBack) 
 
    x = fb.FBAddRegionParam(60,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(210,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bTX","bTX", x, y, w, h)
 
    t.SetControl("bTX", bTX)
    bTX.Visible = True
    bTX.ReadOnly = False
    bTX.Enabled = True
    bTX.Hint = ""
    bTX.Caption = "X"
    bTX.State = 1
    bTX.Style = fb.FBButtonStyle.kFBCheckbox
    bTX.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bTX.Look = fb.FBButtonLook.kFBLookNormal
 
    x = fb.FBAddRegionParam(90,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(210,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bTY","bTY", x, y, w, h)
 
    t.SetControl("bTY", bTY)
    bTY.Visible = True
    bTY.ReadOnly = False
    bTY.Enabled = True
    bTY.Hint = ""
    bTY.Caption = "Y"
    bTY.State = 1
    bTY.Style = fb.FBButtonStyle.kFBCheckbox
    bTY.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bTY.Look = fb.FBButtonLook.kFBLookNormal
 
    x = fb.FBAddRegionParam(120,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(210,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bTZ","bTZ", x, y, w, h)
 
    t.SetControl("bTZ", bTZ)
    bTZ.Visible = True
    bTZ.ReadOnly = False
    bTZ.Enabled = True
    bTZ.Hint = ""
    bTZ.Caption = "Z"
    bTZ.State = 1
    bTZ.Style = fb.FBButtonStyle.kFBCheckbox
    bTZ.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bTZ.Look = fb.FBButtonLook.kFBLookNormal
 
    x = fb.FBAddRegionParam(160,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(185,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(90,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(25,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bRot","bRot", x, y, w, h)
 
    t.SetControl("bRot", bRot)
    bRot.Visible = True
    bRot.ReadOnly = False
    bRot.Enabled = True
    bRot.Hint = ""
    bRot.Caption = "Rotation"
    bRot.State = 0
    bRot.Style = fb.FBButtonStyle.kFBCheckbox
    bRot.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bRot.Look = fb.FBButtonLook.kFBLookNormal
    bRot.OnClick.Add(bRotCallBack) 
 
    x = fb.FBAddRegionParam(160,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(210,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bRX","bRX", x, y, w, h)
 
    t.SetControl("bRX", bRX)
    bRX.Visible = True
    bRX.ReadOnly = False
    bRX.Enabled = True
    bRX.Hint = ""
    bRX.Caption = "X"
    bRX.State = 0
    bRX.Style = fb.FBButtonStyle.kFBCheckbox
    bRX.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bRX.Look = fb.FBButtonLook.kFBLookNormal 
 
    x = fb.FBAddRegionParam(190,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(210,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bRY","bRY", x, y, w, h)
 
    t.SetControl("bRY", bRY)
    bRY.Visible = True
    bRY.ReadOnly = False
    bRY.Enabled = True
    bRY.Hint = ""
    bRY.Caption = "Y"
    bRY.State = 0
    bRY.Style = fb.FBButtonStyle.kFBCheckbox
    bRY.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bRY.Look = fb.FBButtonLook.kFBLookNormal 
 
    x = fb.FBAddRegionParam(220,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(210,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(30,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bRZ","bRZ", x, y, w, h)
 
    t.SetControl("bRZ", bRZ)
    bRZ.Visible = True
    bRZ.ReadOnly = False
    bRZ.Enabled = True
    bRZ.Hint = ""
    bRZ.Caption = "Z"
    bRZ.State = 0
    bRZ.Style = fb.FBButtonStyle.kFBCheckbox
    bRZ.Justify = fb.FBTextJustify.kFBTextJustifyLeft
    bRZ.Look = fb.FBButtonLook.kFBLookNormal
 
    x = fb.FBAddRegionParam(0,fb.FBAttachType.kFBAttachNone,"")
    y = fb.FBAddRegionParam(270,fb.FBAttachType.kFBAttachNone,"")
    w = fb.FBAddRegionParam(255,fb.FBAttachType.kFBAttachNone,"")
    h = fb.FBAddRegionParam(50,fb.FBAttachType.kFBAttachNone,"")
    t.AddRegion("bStopSliding","bStopSliding", x, y, w, h)
 
    t.SetControl("bStopSliding", bStopSliding)
    bStopSliding.Visible = True
    bStopSliding.ReadOnly = False
    bStopSliding.Enabled = True
    bStopSliding.Hint = ""
    bStopSliding.Caption = "Stop Sliding"
    bStopSliding.State = 0
    bStopSliding.Style = fb.FBButtonStyle.kFBPushButton
    bStopSliding.Justify = fb.FBTextJustify.kFBTextJustifyCenter
    bStopSliding.Look = fb.FBButtonLook.kFBLookNormal
    bStopSliding.OnClick.Add(bStopSlidingCallBack) 
 
def CreateTool():
    t = fba.FBCreateUniqueTool("Stop Foot Sliding v1.0")
    t.StartSizeX = 270
    t.StartSizeY = 370
    PopulateTool(t)
    fb.ShowTool(t)
CreateTool()

I know you can create Effectors to lock down feet or use the "Copy Next/Previous Key On Selected IK Object", but this was really fun to create and see it come about. I hope you enjoy learning from the script and as always, I hope this helps.

Tags:MotionBuilder, Scripts, Tools

About The Author

admin

21 Comments

Ale

Hello, is there a chance that your magnificent script working in MB 2020?
Thanks!
Ale
April 1, 2020 Reply

admin

I have yet to get a copy of 2020 so I don’t know. Give it a try and see, worst case scenario you will have errors within the Python Window when trying to use the script.

When I find some time I will make sure it works with 2019.

If you do try it, let me know if it works AND if there are errors, do a screen grab of the Python Window and send it my way so I can make it a priority to get a version of 2020 to apply the fixes.

Thanks Ale.
April 1, 2020 Reply

Pete

I made some updates to get it working on MoBu 2018 if that’s any help?
April 1, 2020 Reply

Pete

I made some updates to get it working on MoBu 2018 if that’s any help?
April 1, 2020 Reply

admin

Andy HH brought up the problems with 2018 :

‘The only difference between to last release and this one is that I removed an FBContainer, which was just a visual element and had no functional baring on the tool. The attribute FBContainer is no longer supported in MotionBuilder 2018, The new version is FBVisualContainer().

StopFootSliding v1.0 was giving this error in MotionBuilder 2018:

“cInfo = fb.FBContainer() AttributeError: ‘module’ object has no attribute ‘FBContainer’”.’

I have a link to the 2018 fix at the top of the page in the “Update” section, you can dl the updated link here: https://drive.google.com/open?id=1hQP4IRYDWX7qauaLnTYxJmkLH25dRNFZ

I may have to update the youtube link, sorry for any inconvenience BUT I hope you had fun learning to debug your version. 🙂
April 6, 2020 Reply

Ale

Hey – I checked and your updated script works! Perfectly. Thanks again for the elegant time-saver script!
April 1, 2020 Reply

admin

Does the 2018 up work with 2020?

My most up to date version is 2019 and I have yet to check the release notes to see if they changed any of thing on the pyfbsdk side
April 6, 2020 Reply

Ale

It seems not working every time but possibly MB has some bugs OR I’ve made mistakes. I’ll try it with several different effectors and skeleton sources. At the moment I have issues with “shaky” feet; but whereas it is a mocap from Mixamo (and I found some other people had problems with that mocap files), maybe that could be a source of the problem.
April 8, 2020 Reply

BardurM

I get the same issue with the script. It works fine in motionbuilder 2020, but only the first time on each foot. When I try to add another time frame where the foot should be still, the script does nothing. Awesome script, but unfortunate it doesn’t work for v2020.

I’ve been using Neill3Ds “stayonfloor 2013” script, updated by Brad Clark. It seems to work fine. But lacks the extra fine tuning you have.
April 9, 2020 Reply

admin

I will have to see if I can get access to 2020 or if you have time could you see if there are errors in the python console window? some error must come up which is why the tools only works once (or at least in part), it crashes and then would have to be restarted to work again.

Thanks for bringing this to my attention, i will investigate.
April 9, 2020 Reply

BardurM

It works!
I wanted to see in the console, what kind of errors there were, so i could post them here.
But instead of errors, everything worked as intended this time. Maybe it was just a restart of Motionbuilder that was needed or something else – i don’t know.
But it seems to work perfectly. 🙂
April 11, 2020 Reply

Ale

I’ll check the console as well, thank YOU for your efforts on this
April 12, 2020 Reply
Ale

Again not working for me, and there are no errors in Python editor. Don’t know what is going on.
April 13, 2020 Reply
Ale

OH – Ik blend needs to be at 100, not 0 – my mistake, seems working!
April 13, 2020 Reply
Bennyhase

Thanks for that incredible plugin ! Works perfect in MB 2020
February 16, 2021 Reply
Rhoger

works with hands? I’m putting my hands on the ground
March 11, 2021 Reply

admin

yes, iot should work with hands.
March 15, 2021 Reply

REDACTED

Hi, here’s the error I got using this in MoBu 2020, where the script only seems to work the first time I apply it to a foot:

Traceback (most recent call last):
File “C:/Users/REDACED/Desktop/stopfootsliding.py”, line 217, in bStopSlidingCallBack
CreateLayer()
File “C:/Users/REDACTED/Desktop/stopfootsliding.py”, line 56, in CreateLayer
fb.FBSystem().CurrentTake.GetLayer(lCount-1).Name = SelObj + ” ” + str( int(nStart.Value) ) + “-” + str( int(nEnd.Value) )
TypeError: unsupported operand type(s) for +: ‘NoneType’ and ‘str’

This script is incredibly useful, in the one time I’ve gotten it to work! So it would be amazing if this could be sorted out.
March 30, 2021 Reply

admin

I will look into this as soon as I get some time – I can email you the script to help me test. Thanks
April 14, 2021 Reply

Zach

Did you ever get a chance to work on your script for newer versions of Motionbuilder?
January 31, 2022 Reply

admin

SO SORRY FOR THE LATE REPLY!!!! 🙁

I just updated the script for you. It should work just fine with Mobu. It was a quick fix and I updated the post as well as the files in the DL link.
June 20, 2022 Reply