Easing - rmfandyplayz/UnityUIAnimationTools GitHub Wiki

The ease decides how a step speeds up and slows down. The same move feels completely different with different eases: Linear is robotic, Out Quad settles gently, Out Back overshoots and snaps back.

Presets

Pick one from the Ease dropdown. It lists Linear and Flash first, then three groups:

Group	Feels like	Good for
Out	Starts fast, slows into place	Almost all UI: things arriving, appearing, landing
In	Starts slow, speeds away	Things leaving and not coming back
In Out	Slow, fast, slow	Moving between two places on screen, fullscreen transitions

Within each group, Sine is the gentlest, and Quad, Cubic, Quart, Quint and Expo get steadily stronger. Back overshoots a little, Elastic springs, and Bounce bounces.

[!TIP] When in doubt, use Out Quad or Out Cubic. For something that should pop, like a button or a panel appearing, use Out Back.

Custom curves

The first entry in the Ease dropdown is Custom Curve. Pick it and a Curve row appears, where you draw the motion yourself:

• Left to right is time, from the start of the step to the end.
• 0 is the From value and 1 is the To value.
• Going above 1 or below 0 overshoots, which is how you make a bounce or a little dip before moving.

Unity's curve editor has a preset bar along the bottom. Click a shape to use it, or use the arrow at the right of the bar to save your own for reuse.

Switching back to a preset keeps your curve, and switching back to Custom Curve keeps your preset, so you can compare the two.

Steps without an ease

Punch and shake steps have no ease, since they make their own wobble. Set Active and Play Sound are instant, so there's nothing to ease.

Mirroring doesn't change eases: a Hide made from a Show keeps the same Out ease, so things slow into place in both directions.