Animating Object Along Path – Then Adding Shape Keys to That Object

FORUMS FORUMS 3D Animation Animating Object Along Path – Then Adding Shape Keys to That Object

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    • #9599

      Psmith
      Participant
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      Mr. Sensei:

      I’ve tried to produce a very simple animation where I used the following process (without success):

      1) Subdivided a Cube and applied the subdivision.
      2) Created an arched path object.
      3) Selected first the Cube, then the Path and clicked the “Follow” button.
      4) Adjusted the length of animation along the path.
      5) Set some in-between keyframes that control where the Object is, in time, along that Path.
      6) Created 4 Shape Key “morphs” of the Cube (stretched and squashed versions).
      7) Tried to Apply percentages of these “morphs” as the Cube follows the arched Path (hovering over Shape Key field and pressing “I”).
      8) Duplicating some Shape Key “morphs” to create a “hold” before key framing another “morph”.

      During this Shape Keying process, key frames that I have already placed, (using “I”), become improperly distorted – not reflecting the key frame changes as they were initially made.

      Any help in this matter?

      Greg Smith

    • #9601

      Psmith
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      O.K. – what I observed happening is that after the Cube is assigned to follow the Path – and, subsequently, a Shape Key is applied at some point during the animation – that the Cube becomes rotated by 90 degrees counter-clockwise.

      Very strange, and I don’t know how to correct this. I tried checking the “Follow” check box in the Path Parameters panel – but to no avail.

      Greg Smith

    • #9613

      admin
      Keymaster
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      Hi Greg. Not sure exactly what’s going on here. Whenever you’re editing shape key keyframes via the dope sheet you’ll need to switch the editor type from “Dope Sheet” (far bottom right of default workspace down in the actual sf dopesheet/timeline) to “Shape Key Editor”. That is, if you’re wanting to paste or move around shape key keyframes, if just entering the keyframes in manually (as you said, hovering the mouse over the property value and hitting I), then you don’t have to change it. I honestly barely knew about these different Dope Sheet editor types until a few months ago so I may not have mentioned them in the video you watched. This is the only way to effect the shape key keyframes that you entered. I’m guessing that’s what was happening here.

    • #9619

      Psmith
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      I tried making the same animation – first animating a ball moving along an arched Path – then, switching to the “Shape Key” Timeline Editor – and as soon as I set the first Shape keyframe, the object, once again, becomes rotated by 90 degrees counter-clockwise.

      I made the Object, the Path and the Shape Keys all from the Orthographic “Front View” (1 on the keyboard) – so everything I did was on the same plane of view. I never changed views, either.

      It would follow that all the animation would remain relative to this Front View – including the Shape Keys.

      Weird.

      A temporary workaround for this simple kind of animation would be to use the “Animate All” addon – and simply create the different shapes “on the fly” – after animating the general motion of the object moving along the Path. I tried this, and it does work.

      But, Shape Keys would be the ideal way to not waste time and have something stored for use again.

      I’m using Blender 2.77a and the latest version of Sensei Format. It is the Mac build.

      Greg Smith

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