slow-in-out-mastery

Objects in the real world don't move at constant speeds—they accelerate from rest and decelerate to stops. Slow in/slow out (also called ease in/ease out) captures this fundamental truth. Without it, animation looks mechanical. With it, motion feels alive.

Slow Out (Ease Out): More drawings clustered at the start of a movement. The object accelerates away from its starting position gradually.

Slow In (Ease In): More drawings clustered at the end of a movement. The object decelerates into its final position gradually.

イージング カーブの設計、モーション ペーシングの制御、自然な加速/減速の作成、または動きを物理的に接地しているように感じさせる場合に使用します。 ソース: dylantarre/animation-principles。