Curve bevel factor - export to FBX (import on Unity)

Hello Blender Artists!

People, I’ve made an animation with bevel curves (start and end keyframed - see the GIF below - (1.54 MB)). My question is how can export this to FBX or to Unity directly (if its possible)? I need to make an interactive graphics with the little word sppinig and the lines animated.

Thanks in advance. C Ya!!
Peace out! :smiley:


Unity does import bevel curves, they are imported as a mesh so will not have the edit-controls.
Since they are so curved, you can probably not get away with using blendShapes, so you will probably have to rig them. And/or see if there is a suitable unity-addon for 3D line drawing.

Good luck,

Nice, Thomas. Thanks!

For while I’ve just made simple animations. Never did anything with bones or rigging. Do u think its possible to make those curves grow using bones or rigging? I have no idea how to start it. Any tutorial I can see? Thanks again!

You probably need to build the curve from a mesh-object, since armature and blendShapes only work on meshes. I have an old WIP arrow to be used in a game-project where I have tried something similar. I’m currently not too happy with the results, but it seems that it is possible to use both solutions (rigged and shapekeys).
I used IK-modifier on the top bone to control the arrow on the rig, and had to use 2 blendShapes to control the arrow with the shapeKey solution. The armature-animation can be imported directly in Unity, but for the blendShapes, you’ll have to animate the two shapes syncrouously in Unty (easy to script).
It all depends on how many curves you’ll need to animate, and the quality of the animation and material used.
Alternatively there is procedural animation, you can modify the vertices directly in Unity (calculate world coordinates for each vertice and move them in code), this is very efficient, especially if you want to start and end the animation from any point on the globe, but it requires alotta code and some math :wink:
It is possible that someone has a better solution (a rope / elastic simulation) that can be used ?