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  • Kent Trammell Jonathan Lampel Wayne Dixon Paul Caggegi
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    Source File for 2.80

    grayblack83
    posted to: Animate a Circular Path

    Good Day, 

    I am currently trying to use the 2.80 source file to follow along with this "Animate Circular Path" video tutorial.  There may a bug with Blender.  While adding a Motion Path to my 5 keyframes, I know that my ball is not following a true circular path, as shown by my motion path.  As I attempt to clean this up, I use my graph editor and add the cycles modifier, My curves look perfect, as in no need to correct, but according to my motion path, it isn't right.  I have attached a screenshot to show the issue.  Also, it seems after deleting the Y location, from within the Graph Editor, when i re-calculated the motion path, I got and motion path going down the middle.  I know 2.80 is still in Beta, but has anyone else encountered this?  How do you correct this?   Thanks! 

    Reply
    • Wayne Dixon replied

      Make sure you recalculate the motion paths after making any changes.  I wish 2.8 did this automatically but it doesn't.

      If that doesn't fix it - can you send the file?

      I'll look into it.

    • g
      grayblack83 replied

      Thank you so much for responding to my question.  It seems that the most recent version of Blender 2.80 doesn't have a "Recalculate" Button.  Only "Update Paths".  I have done that a couple of times and nothing has changed.  How can I send you my file? 

    • Wayne Dixon replied

      Check the x curve as well, I have a feeling that could be your issue.


      But to send a file, just upload it somewhere on the net and post the link.

      Dropbox, Google Drive, WeTransfer or anything of the like.

    • g
      grayblack83 replied

      Thank you. I have checked X curve as well, but I don't see an issue there, not one that I can pick out at least.  Here is the link to the file I was working on: 


      https://drive.google.com/drive/folders/1pgYGYNPHjM13Q_hWHiSo3ebuU6V-8bAv?usp=sharing


      Thank you again for your help.

    • Wayne Dixon replied

      Yeah it's your x loc curve.

      BEFORE
      AFTER
      Do you see the first and the last key?

      They need to be smooth and not flat.  This way it doesn't slow down when it get's to that position in time.

    • g
      grayblack83 replied

      Thanks!  Yeah, I see that now.   I may have to start from the beginning with this.  I don't understand why certain things are happening.  For example, in my file, the Z LOC Curve doesn't look like it needs fixing, as you show in your tutorial, where you adjust the Z LOC curve within the graph editor after we add the curve modifier.  That's where my first problems started.  Next, I don't know why a Motion Path exists going down the middle in my wonky circle if I have deleted the Y LOC curve.  I am going to try to begin the tutorial with the latest 2.80 Beta build, and see what I get.  I appreciate your time in answering my question and reviewing my file, its one of the reasons I keep my subscription with CG Cookie, this team is great!  Can't wait to see more of your tutorials\courses from you using 2.80.   

    • Wayne Dixon replied

      The Y loc curve will be directly towards and away from the camera view, so that 'wonky' vertical motion path is because you have the z loc cycling and the x loc ONLY looping once.  (the motion paths will show you from frame 1-250 if you leave it at the default settings.

      Don't give up - it will all start making sense really soon.