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a have a considerably simple path and an object to follow that path. Following the basic procedures:

  1. Create a path and object,
  2. Add Follow Path constraint to the object and select path to follow,
  3. Animate the path.

Now I am facing a small issue at step 2, adding a path to follow causes object to rotate ambigiously (at least for me).

What is the right way to do this? What am I missing?

Here is some screenshots from the scene:

Before adding constraint

enter image description here

Constraint settings

enter image description here

After adding constraint

enter image description here

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  • $\begingroup$ Check follow curve and click Animate Path. $\endgroup$ – Robert Gützkow Jul 10 '19 at 20:22
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  • Left follow path without empty
  • right follow path with empty

General steps

  1. create a path
  2. create an object

    2.1 If you are going to use an empty you can use any, usually to avoid complicate things selected PLANE AXES

  3. select path
  4. enter edit mode
  5. select a point where you will start to follow the path once selected

    5.1 press SHIFT + S and select cursor to select

    5.2 pres enter or LMB

  6. exit edit mode

  7. select the object
  8. press SHIFT + S

    8.1 select to Cursor Offset

    8.2 pres enter or LMB

This is where the road bifurcates into 2, without empty object and with empty object

follow path without empty

  1. select the OBJECT that the route will follow (child)
  2. select the PATH that the route will follow (Parent)
  3. press CTRL + P and select Follow Path
  4. go to the timeline and press play to get the animation

follow path with empty

  1. select the OBJECT that the route will follow (child)
  2. select the EMPTY PLANE AXES that the route will follow (Parent)
  3. select the EMPTY PLANE AXES that the route will follow (nao is a child)
  4. select the PATH that the route will follow (Parent)
  5. press CTRL + P and select Follow Path
  6. go to the timeline and press play to get the animation

NOTE: for the example with empty change the point of origin of the mesh to the tip of the arrow and in the example without empty the point of origin of the mesh to the tip of the arrow continued in the center of it

follow Path Example

NOTA:

WHEN YOU DO NOT USE THE EMPTY THE OBJECT IS SUFFERED TO DEFORM A LITTLE OR MUCH ACCORDING TO THE ANGLE OF THE CURVES OF THE ROUTE, when you do not use an empty the mesh that follows the route tends to deform a little or a lot depending on the sharpness of the angles of the curves of the route and usually turns in directions that are not planned

use an empty between the object and the route helps control this and prevents deformation of the mesh

observe the image well and see the detail with both arrows one with empty and one without empty

part 1 part 2 part 3

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  • $\begingroup$ Give me a few minutes I will change the work area and I can not delay in the trip, as soon as I get to my office I will finish putting the restriction, if I do not deliver now they will leave me and a storm is approaching and I do not want to get wet; P $\endgroup$ – user58715 Jul 10 '19 at 21:39
  • $\begingroup$ Thanks for your answer. I will follow those exact steps and see if it's working. Good luck with the storm btw! $\endgroup$ – Firat Jul 10 '19 at 21:47
  • $\begingroup$ we are already near the office in about 20 minutes I will put a gif that explains what happens with the restrictions, just let me get there:... $\endgroup$ – user58715 Jul 10 '19 at 22:11
  • $\begingroup$ @firat listo, check the last 3 gif, I think you do not need a written explanation and the graphic explanation will suffice $\endgroup$ – user58715 Jul 10 '19 at 23:58
  • $\begingroup$ if any of this helped you accept the answer that encourages you to follow the effort a bit $\endgroup$ – user58715 Jul 11 '19 at 0:38
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Some points about the Follow Path constraint:

  • You need to make sure that the curve goes in the direction you want. Select it, go in Edit mode, check the normals, if they don't go in the right direction press W > Switch Direction.
  • As soon you give your object the Follow Path constraint, it might jump far from its position. It's because with this constraint it will come as close to the curve beginning point as it is to the scene center point. So if you want your object to stick to the beginning of the curve it might be convenient to put it at the center of the scene, before or after you gave it the constraint, shortcutaltG.
  • If you want your object to be correctly oriented, you might need to select the good Forward value in the Follow Path constraint. You might also need to rotate your object so that it's well oriented.

There are other things about this constraint, like how to animate it with the Evaluation Time, but it's another topic.

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  • $\begingroup$ What do you mean by (The origin of the curve at the beginning of the path, if not), what origin? $\endgroup$ – user58715 Jul 11 '19 at 13:31
  • $\begingroup$ My bad, for Follow Path it doesn't matter where the curve origin is ;) I've deleted $\endgroup$ – moonboots Jul 11 '19 at 13:52
  • $\begingroup$ The origin of the curve is the point that is seen at the center of the curve or objeo or mesh, what if you must do as you indicate is to place your mesh in the most appropriate position to follow the curve and move in the most appropriate way agree to your vision and desire to obtain the result you are looking for $\endgroup$ – user58715 Jul 11 '19 at 21:10
  • $\begingroup$ Sorry i don't understand what you mean, could you please reformulate? About the curve origin: it needs to be placed at the beginning of the curve when you use the curve in a Curve modifier, therefore my confusion $\endgroup$ – moonboots Jul 11 '19 at 21:24
  • $\begingroup$ Do you know that is origin in blender or do not you know?, I ask this because your answer is not very clear, you do not understand a couple of things that you mentioned, I had to edit your answer a bit to give it shape and even so I was unclear a point about the restriction, $\endgroup$ – user58715 Jul 12 '19 at 18:36

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