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I created a very simple animation. I added a curve, and let the cube follow the path. It works, but the speed is constant. The pink line seem to be the position on the curve. Can I make this line a bezier instead of a straight line?

enter image description here enter image description here

Here is the Blender file: https://gofile.io/?c=04aPgs

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Seems that you have extrapolation in linear mode. Tochange that go to the graph editor, select you animated axis go to Channel > Extrapolation Mode > Constant Extrapolation. Also you animation has to have at least two keyframes.

Graph Editor

If that doesn't work please reupload the file because is down.

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  • $\begingroup$ Extrapolation Mode is disabled. I am sorry about the link. It seems that File.IO deletes the file after one download, and I had downloaded it myself to see if it works. I uploaded the file to another site: gofile.io/?c=04aPgs $\endgroup$ – Damn Vegetables Dec 22 '18 at 19:41
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Look in the properties panel of your Graph Editor (displayed with N), it looks like you've automatically generated a Modifier > Generator. You can modify it but you won't be able to add keyframes or manipulate handles. So:

  • Close it.
  • Create 2 keyframes at frame 1 and frame n:
  • On the Timeline, put your cursor at frame 1 and give the Evaluation Time of your curve a value of 0 and insert a keyframe with i.
  • On the Timeline, put your cursor at frame X (for example 50) and give the Evaluation Time of your curve a value of 100 (for example) and insert a keyframe with i.
  • Now, in your Graph Editor, you can see the curve and handles that have been created, you can manipulate the handles, change their type with V or create new keyframes with i.

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