How to Mirror The Whole Animation – 3ds Max CAT

How to Mirror The Whole Animation – 3ds Max CAT

Hey, fellow animators, I’m Miloš Černý. This is just a very quick tip that some of
you might not know. We have this standing idle animation here,
that we would like to mirror. Let’s say that maybe you want to have this
animation in a game and because you have two different stances for stand, you want to reuse
this animation you have already done and just mirror it. So let’s see how to do that. Notice that here the green legs are closer
together now and blue ones further. Ok, the whole animation is collapsed into
one layer. Or baked if you will. It has keys for every bone on every frame. But it doesn’t have to be collapsed by the way,
just for your information. You can have as many layers as you want here. But let’s do it with this one for now. Select the triangle and save the clip. Which means that you save the whole stack
of layers. In our case, only one. It will take some time to save it. After it is done, switch to new layer by selecting
“Available” here and just load the animation
clip we have just saved. Here you can already see that we have a “Mirror”
option for the whole clip loading. If we select that, you can choose from three
options, but let’s keep it on default and hit Load. You can see that the new layer appeared, and
that the whole animation is mirrored in it. Green legs are further apart now and blue
ones closer. And that’s the whole thing. You have the whole animation mirrored and
can use it for whatever you need. There is a bit more to it with mirroring in
CAT, but I will do more extensive tutorial on it later and it will be linked in the description
and also up here when it will be done. This was just a very quick tip that I wanted
to share and might be helpful for some of you guys. Ok well, see you in another video. I am Miloš Černý and Thank You for watching.


  • Anja Aleskari

    January 23, 2019

    This can be so useful. Thanks Miloš! Will this work CAT motion walk cycles too? BTW can you please show how you make transitions between running to stopping, from idle animation to walk and so on?

  • Itzli

    January 24, 2019

    Thank you. This was useful! 🙂

  • Anja Aleskari

    January 27, 2019

    Hey Milos, can you please make a tutorial for blending animation layers by controlling the local weights? Seems like a powerful way to blender layers. I'd love to learn that properly 🙂

  • PROmax3D

    January 27, 2019

    Excellent! Thank you! Check my work as well, please!

  • Matthew Kegley

    March 26, 2019

    Thank you, Sir Černý, this means so much to me, and anyone else who has ever wanted to be able to achieve this.

  • Александр Гоголев

    April 12, 2019

    Please can you explain how to mirror a SELECTED PART of animation but not whole?? or how to animate mirroring as "transform" option??? so my animation is an exact mirroring of the part of the object…

  • joshua jung

    May 31, 2019


  • Fallout Animation

    June 20, 2019

    Thank you! May I ask what scale data means?

  • Tarango

    July 1, 2019

    Quick, clear and efficient : thk a lot!

  • Han Solo

    July 30, 2019

    All your CAT tutorials are definitely SO very welcome. Thanks, again, to share your knowledge.


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