Those tuts tell you how to model the objects, you need to add hook modifiers to the curve in order to animate it, as I said before. That’s not in the tutorial yet - part of my very long Todo list! :eek:
Here’s a picture:
You can see a curve and an empty at the top of the curve - the curve has a “Bevel” object as in my rope tuts. It also has three Hook Modifiers. Each hook modifier is assigned to a vertex (the black dotted lines show where) The procedure is:
Construct the curve for your object, add as many Hook Modifiers as you need to animate the curve. I then added a Bevel Object, which must also be a curve, I used a Bezier circle, to get the overall shape. For a belt profile I would use a rectangular “plane” object and then convert it to a curve using ALT+C => “Curve from Mesh”.
Add an empty, or bone or other object as the operator, I placed this on the end vertex of the curve.
In EDIT mode assign this Target object to each Hook modifier.
This is what the hook mod looks like in EDIT mode:
For EACH Hook Modifier - select the vertex you want it to work on and click the Assign button on the modifier.
Set the “Strength” value, I set 1 for the end Hook Mod, then 0.66 for the next then 0.33 for the next. This way the movement is less the further the affected vertex is away from the Target Object.
Move the Target object - see below:
Note the dotted black lines showing where the Hooks are in the rest position. I have just moved the Target empty up and to the left a little.
If you are making a retractable seat belt, like Inertia ones in cars, you will need to use the principles in my tuts to extend the belt out of the belt reel or hole in the car’s inner panels. That’s why I pointed you towards those tuts - particularly the rope tricks and snakes bits. These tell you how to extend the profile of the belt along a curve track. Animating the “movement” of the curve has to be done with Hook modifiers as I have outlined above.
Hopefully this will get you sorted, just ask again if you are still stuck.
PS. You can of course have many Target objects working on different parts of the curve, try a simple setup and then make it more complex. The Target object can also be used to extend the profile along the curve as well as reshaping the curve, that’s really the final stage for you to get to.