Can I Import Rotation Animation From Blender To Unity

Have y'all ever been frustrated when exporting FBX files from Blender and importing them into Unity? Problems with rotation and scaling forth the mode? In this mail I will provide you with some tips and tricks to get the Blender to Unity process working smoother.

But await - why non Blender 2.8? Fifty-fifty though Blender 2.8 has been in development for a long time, much of it is a complete re-write and the electric current beta is not yet stable enough to work with for a decent workflow. Once a stable and reasonably bug-free version of two.8 is bachelor, I volition publish an update. For now, all the same, I strongly recommend sticking to 2.79.

First of all, if you lot are impatient similar me, hither's a quick summary of the easiest way to get rotation and scaling right:

For a unproblematic object

(Uncomplicated object = no hierarchy and no armature (bones) or animations)

1. Go to File | Consign | FBX (.fbx)
2. Tick !EXPERIMENTAL! Apply Transform checkbox
3. Click on Export FBX push

Lookout this video (at 1:01) to encounter it in action

For multiple simple objects

1. Select an object
2. Movement the the object to position 0,0,0 in your scene if it isn't there already
3. Become to File | Consign | FBX (.fbx)
4. Tick Selected Objects checkbox
5. Tick !EXPERIMENTAL! Utilise Transform checkbox
6. Click on Export FBX button
7. Get to pace ane and repeat process until all objects are exported

If you want to advance this procedure, specially if you are making many objects, accept a look at this post where I take fabricated a Unity Batch FBX Consign addon for Blender!

For rigged characters with armature and bones

1. Select the armature (the mesh should already be a child of the armature)
2. Rotate the armature to -90 degrees on the 10 axis
3. Press Ctrl+A to and select Apply > Rotation
4. Rotate the armature to xc degrees on the X centrality (practice not apply rotation!)
5. Select the child mesh of the armature containing your graphic symbol (it should testify a rotation of -90 degrees for the X axis)
6. Press Ctrl+A and Apply Rotation (the 10 axis rotation should now exist 0 for the child mesh object)
7. Go to File | Export | FBX (.fbx)
8. If you take cipher else in the scene other than the armature and mesh object you can skip this footstep, otherwise, select only the armature and the child mesh character object (use shift to select multiple) and tick "Selected Objects" in the FBX export window.
9. Set Utilize Scale dropdown to "FBX Units Scale"
10. Click the Export FBX button

Sentinel this video (at 2:24) to see the export procedure for a rigged character with an armature.

This video highlights the problem and demonstrates the methods to solve the result:

That's It.

If you follow the above steps for unproblematic objects and rigged characters, yous should cease up with correctly rotated and scaled objects when they are imported into Unity with a lot less headache. You'll even gain some improve slumber now!

Did you find this useful? Please head over to my Patreon page, you can download the .blender files that I created in the video to a higher place.

Y'all can as well watch timelapses of the modeling and blitheness process of the unproblematic lowpoly objects as well every bit the animated rigged grapheme.

Demand More than Help?

If you lot couldn't quite follow, or if y'all a more detailed story, not to worry, I'll fill up in the blanks.

There are three main headaches in the workflow of exporting from Blender to Unity: Rotation, Scale, and Animations. I will go through the rotation and scale problem in the remaining part of this mail - and I'll publish a split up mail for the Animations problem.

Axis vs. Alignment

Unity works with the Y centrality being upward/down and Blender works with the Z axis equally up/down. This creates a problem.

When you export a FBX file from Blender, regardless of which axis you specify in the blender FBX export settings, the object'due south transform volition exist rotated in Unity. At outset, you may not consider this to be a problem because once imported you lot tin can drag the object into a scene and it looks correct. But when you lot look closer at the transform, you'll find that the object is rotated automatically by Unity past -90 degrees around the Ten axis. Plus, the scale is incorrect which will also deal with.

Problem if exporting from Blender using default settings

Problems

1. The object is rotated around the 10 axis by -89.98 degrees
2. The object's Z centrality (blueish) is facing upwards (Unity'southward Y axis)
3. The object's scale is 100

Number one (and consequently besides number 2) causes a problem because if you attempt to move the object in it's forward vector, e.chiliad.:

              void Update()  {     transform.Translate(Vector3.forward * Time.deltaTime); }            

- this fish won't swim forward - it will bladder upwardly like a expressionless fish along information technology's own bluish axis.

Number three, the calibration is ready to 100. Even though the object is 1 meter in size in the scene - simply like the native Unity cube behind information technology in the flick, information technology has automatically been scaled up 100 times by Unity in the import process. This must as well exist fixed because y'all encounter bug of hierarchical scaling if you parent and unparent objects to a scaled object.

Don't piece of work around the problem

It's common that people piece of work around this problem by making the object a child of a new GameObject and apply all game logic to the parent - simply that is a dirty solution. You would then pollute the scene with potentially unnecessary GameObjects which impacts functioning also equally adds complexity. And, you lot don't even eliminate the problem to begin with. If you are in the business of making and selling assets for Unity, it is an absolute no-no to have objects with incorrect rotation or calibration, nor should you lot work around the problem with GameObject parenting. Don't practise it.

Fix the problem instead

Assumptions:

• You lot have modeled one or more objects in Blender as if one Blender unit = 1 Unity unit which both represent 1 meter.
  (If you haven't, rescale your object and use Ctrl+A to Apply Scale)
• You take used Blender standard axes for Front/Back/Left/Correct/Up/Down.
  (If yous haven't, orient your object and utilize Ctrl+A to Apply Rotation)
• You lot take positioned your object(due south) at position 0,0,0 in your Blender scene.
  (If you haven't, position your object at 0,0,0 and use Ctrl+A to Apply Location)

Fixing the rotation problem "The Easy Way"

The good thing is for a big number of objects - at least all the elementary ones - in that location is an easy gear up. When you go to Go to File | Export | FBX (.fbx) you can just tick the !EXPERIMENTAL! Utilise Transform checkbox - and proceed past clicking the Export FBX button in the (upper right corner) to export the object and it should import fine in Unity.

Note: The feature is named !EXPERIMENTAL! for a good reason. It does not work for nested objects, objects with animations, and objects with armatures. Maybe there are besides other problems that could ascend when using this which is why I am besides including an alternative method here to manually fixing the rotation problem.

Over again, watch this video (at 1:01) to see it in action.

Fixing the rotation problem "The Transmission Style"

If the experimental Employ Transform method does non piece of work for you, for whatever reason, yous can do this manually:

Animation showing manual rotation

1. Select the object you wish to export
2. Pres North if y'all don't see the transform input fiels
3. Enter -xc for X Rotation and press Enter
4. Press Ctrl + A (when mose is over viewport) and Apply > Rotation
5. Enter 90 for X Rotation and press Enter (exercise not utilize again!)

So what is happening and why does this work when yous consign the FBX file?

When you rotate the object -ninety degrees effectually the X axis and and then yous 'apply' the rotation - Blender will consider the rotation to exist the 'default rotation' of the object. So when you rotate the object in step v by 90 degrees around the X axis again, and when y'all don't apply the rotation, the object's default rotation is actually pointing in the wrong direction from Blender'south point of view, merely in the correct management from Unity'south point of view. If you lot were to apply the rotation before exporting, you lot volition be back to where you started which is why information technology is important that the transform'due south rotation in Blender shows as X:90 at the same time as the object is correctly oriented in Blender's viewport. Encounter the Blender Transmission for more details virtually applying rotation to the transform if needed.

The scale still needs to be fixed - simply that is much easier. A uncomplicated change of the Apply Scalings dropdown to FBX Units Scale:

So, if the first method (!EXPERIMENTAL! Utilize Transform) didn't work - and you have manually inverse the rotation, you can at present:

1. Manually change the rotation equally but described higher up
2. Get to File | Consign | FBX (.fbx)
3. Tick the Selected Objects if you are exporting a single object
4. Change Use Scalings to FBX Units Scale
5. Click the Export FBX button in the (upper right corner) to export the object and it should import fine in Unity.

The object should now import fine into Unity with correct rotation and scale.

Sentinel this video (at 1:thirty) to see "The Manual Way" in action.

But... I have a grapheme with animated armature?

Only what about nested objects, such as an armature with a child graphic symbol mesh? The same principle applies as "The Manual Way" described above, only with these slight modifications:

1. Rotate the Armature as described in The Manual Mode
2. Apply the Rotation of the Grapheme Child Mesh of the armature

Over again, watch this video (at 2:24) to see the export process for a rigged character with an armature.

Is your grapheme scale incorrect to begin with?

If y'all haven't got the correct scale of your animated character in Blender, y'all are in a world of pain my friend. I oasis't found a manner to resize the armature without breaking all the animations. You lot will demand to rescale your armature, use the armature scale, and recreate your animations. If yous know of a way to solve this without redoing the animations - please let me know and I will update this mail.

Let's Automate

I take created a Blender Addon that you tin download and install. This automates the procedure of exporting simple objects as individual FBX files gear up for import to Unity. The objects that are exported will all be in the correct rotation, scale, and they will exist positioned at 0,0,0 regardless of where they are in your Blender scene at the time of consign.

You can export hundreds of objects to individual FBX files in a thing of seconds.

Blender Batch FBX Export

Yous can allow the addon to use different methods to export your objects as FBX files:

1. Rotated Copy - creates a temporary rotated copy of each object that is positioned at 0,0,0 - then exported and finally removed. The original copy is left as is and then you tin keep all objects in blender using blender centrality and rotations.
2. Apply Transform - uses the !EXPERIMENTAL! Utilize Transform method to export objects. The original copy is left as is so you tin can continue all objects in blender using blender axis and rotations.
3. Equally Is - exports the objects as is, if you have already applied the rotation fix to your objects (either manually or by using the provided "Fix Rotation (Selected Objcts)".

Finally, you tin can choose to export all (mesh) objects in the scene or your electric current choice.

To Circular Things Off

Thanks for taking your time to read this post. The Blender to Unity rotation and scaling problem has plagued me for years and I never took the time to document the exact settings and behaviors, until at present.

If yous found this mail useful, delight share it with the social media icons at the tiptop. Likewise feel free to link to this postal service from your web site every bit it would assist it to gain more exposure.

I take a patreon page where y'all can support hereafter post. Equally a Tutorial Tier patreon y'all tin can too download the .blend files that I created for this tutorial (the fish, stone, single tree, and animated character).

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Source: https://blog.imphenzia.com/blender-to-unity/

Posted by: leewelinigh.blogspot.com

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