You can use a 3D animation package such as (Maya, 3DSMax, modo, Cinema4D, etc.) and animate the swing of the ball (plan or lateral height depending on your type). Also, depending on your ball template, you can keep the frame count pretty low, maybe 15 frames. Then you will create frames as a series of PNG files Ball_0001@2x.png, Ball_0002@2x.png, Ball_0003@2x.png, put them in an atlas and assign them to SKSpriteNode with SKAction. In the sprite set, you can make several changes to change the animation, simplify, simplify by SKActionschanging the frame time toSKAction / . , , . , , .
EDIT:
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