How to tween a model correctly

[Oficcer_F]

Hey, I am currently wanting to rotate a model 180 degrees using tweenService. I know that there are multiple posts about this, but, none of them use the new method, PivotPoints (the other posts use the deprecated methods).

In short: I want to tween the orientation of a model.

Thank you for any help!

[kalabgs (FartFella)]

You cant actually tween using pivot points (Its just the nature of how they are made), you need to just tween primary part

also i got a module for that

Model Tween (Position,Orientation and Scale)

Hello fellow developers!! Today i want to showcase an project of mine which tweens models using nothing complicated I know u can tween model CFrame which can basically set model Orientation and Position. But I still made orientation and position Here is some showcase: Currently the module is far from perfect and there are issues i need to fix the biggest problem currently is that tweening the same model twice at the same time wil…

[Oficcer_F]

Thanks for responding

With regards to this:

@kalabgs

You cant actually tween using pivot points

I saw that @colbert2677 wrote this:

@colbert2677

Note (06/30/2021): Due to the release of the new pivot APIs and the thankful deprecation of SetPrimaryPartCFrame, the legacy method of CFraming is now also appropriate and you do not necessarily need to use this welding method. Do note that the pivot CFrame is different from the PrimaryPart CFrame though, so you will have to account for that when writing your proxy objects.

Am I just misunderstanding him, or what does he mean?

Looking forward to a response!

[kalabgs (FartFella)]

Mine does not use SetPrimaryPartCFrame , it actually just tweens the primary part (if exist else a random part is selected), so its basically tweening a part with a few extra steps.

[Oficcer_F]

Ok, thanks. In your module, do I need to weld the parts in the model or does the module do everything for me?

[kalabgs (FartFella)]

it does everything for you, but i recommend just making sure to set a primary part which is located near the center of the model just for more accurate rotation.

[Oficcer_F]

Great stuff my man! Thanks for everything

[colbert2677 (ImagineerColbert)]

I wrote this tutorial some time ago to describe the best method for tweening models at the time that didn’t involve the use of SetPrimaryPartCFrame or a custom implement of the function where you calculate all the offsets by hand. SetPrimaryPartCFrame suffered from floating point imprecisions that would tear a model with each call with it being noticeable over a long period of time.

Since the advent of pivots, moving models is very efficient with PivotTo and doesn’t suffer from the floating point imprecisions that SetPrimaryPartCFrame did. This note is to point to the fact that developers can use the “old” method of tweening models (by proxy - you tween a CFrameValue and then have the model’s CFrame adjust according to the current value every step) now that pivots exist and SetPrimaryPartCFrame is deprecated, ridding of model tweening’s most glaring issue.

The method in that thread is physics-reliant while moving models by a pivot doesn’t require you to hook into the physics pipeline (no unanchoring, no welds). This is also important for experiences that require joint-destroying instances like explosions to hit tweening models without destroying their joints. Anchored assemblies will maintain shape while welded ones won’t assuming you want the vanilla joint destruction behaviour of explosions and don’t want to write the hit checking logic yourself.

[Oficcer_F]

Thank you for this clarification, and nice seeing that you’re still around on the forums!

I’ve tried finding tutorials that use the new method with pivots, but to no avail. I’ve also tried reading the official Roblox documentation but I cannot figure out how I use it to tween models. Do you have any good sources on that or any tips?

Thanks again!