lattice/docs/animation.md

Animation

Animations are wall-clock based, updated once per frame by AnimationManager.update() (the Window calls it). Registering a new animation with the same element id and type replaces the running one.

Element extensions (xyz.meowing.lattice.animation)

Low-level, animate anything:

element.animateFloat({ element.rotation }, { element.rotation = it }, 90f, 300, EasingType.EASE_OUT)
element.animateColor({ rect.backgroundColor }, { rect.backgroundColor = it }, target, 200)
element.animatePosition(endX, endY, 500, EasingType.EASE_IN_OUT)   // animates constraints
element.animateSize(w, h, 300)

All return the running animation and accept an optional onComplete.

Presets

element.fadeIn(300)               // alpha via colors; recurses into children
element.fadeOut(300) { done() }   // hides when finished
element.moveTo(x, y)              // constraint move
element.scaleTo(w, h)
element.colorTo(argb)             // background/text/svg tint by component type
element.slideIn(fromX = -width)   // slides to its original position
element.bounceScale(1.2f)         // press feedback

slideIn/bounceScale remember the element's original geometry on first use and restore it.

Easing

EasingType.LINEAR, EASE_IN, EASE_OUT, EASE_IN_OUT (quadratic).

Use Theme.animFast/animNormal/animSlow for consistent durations.