baking script vs baking plugins [SOLVED]

  • On 27/11/2014 at 03:45, xxxxxxxx wrote:

    Hi guys,

    I just moved from 3ds max to c4d and so I m moving from maxscript to python at the same time.

    I am trying to write a script to automate baking on selected object, to be more specific creating a null and matching his position/rotation/scale to the object and keying the null on every frame.

    In maxscript I would have done a for loop looking like that (baking the object named 'objectToBake' for a 250 frames long scene) :
    obj=point()   //create null

    for i=0 to 250 do
    sliderTime = i
    obj.addkey (this won t be that line but it s just the concept)

    Then in c4d I did the same thing in python. So within the object to bake selected I run this:
    import c4d
    from c4d import gui
    #Welcome to the world of Python




    if not posTrack:


    for i in range(0,91) :
        c4d.EventAdd()     // here is my issue, can t update during a loop


    And basically it works only on the first frame.
    From what I read it s all because script in c4d are singlethread and so the positions don t update during the loop even though I update the time slider position during the loop.

    So now I m trying to do it through a plugin hoping now my positions will be updated during the loop.
    Is a plugin the good way to do it ?

    I also want to create an user inteface to select the objects I want to bake and all that stuff. And then I was wondering if this go with the plugin as well and if a plugin is the only way to do it.

    Hope all this is not to confusing but I m a bit lost with what script are doing and what plugins are for in c4d.

    Would be great if you can let me know if I m in the good direction or not.
    To make it very simple, I just want to know what is the way to run commands in a loop and having everything updated at each loop iteration.

    Thank you !

  • On 27/11/2014 at 04:03, xxxxxxxx wrote:


    you might have a look at this thread, there is a basic bake script,

    There is a sync message that will update your scene like:


    You can use a script even if you want to use a dialog.
    A async dialog plugin might be a good choice, too.

    Best wishes

  • On 28/11/2014 at 00:38, xxxxxxxx wrote:

    Hello and welcome,

    setting the current frame of a document is not as simple as:


    You can use SetTime() to set the current frame of a document. However this will not animate the scene. To get the state of an object in a certain frame you have to animate the scene since the state of an object may depend on other objects like deformers, effectors etc. To animate the scene use ExecutePasses():

      for i in range(0,90) :  
          time = c4d.BaseTime(i,fps)  

    best wishes,

  • On 28/11/2014 at 02:49, xxxxxxxx wrote:

    Thanks Sebastian for the detailed explanation!
    Always great to see how you straighten things out!

    That´s what the

    def SetCurrentFr(FR, doc) :

    function in my script does.

    Just a small additional note.
    After some experiments with baking mograph, dynamics, etc.
    I recommend to use the

                      key = curve.AddKey(CurrTime)['key']  

    instead of

                  key = curve.AddKey(CurrTime)['key']  
                  key.SetValue(curve, val)  

    for translation keys.

    Best wishes

  • On 05/12/2014 at 08:22, xxxxxxxx wrote:

    Hello had,

    was your question answered?

    best wishes,

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