@tamagui/react-native-web-lite
Version:
React Native for Web
46 lines (45 loc) • 1.91 kB
JavaScript
import { Animation } from "./Animation.mjs";
import { shouldUseNativeDriver } from "../NativeAnimatedHelper.mjs";
class DecayAnimation extends Animation {
_startTime;
_lastValue;
_fromValue;
_deceleration;
_velocity;
_onUpdate;
_animationFrame;
_useNativeDriver;
constructor(config) {
super(), this._deceleration = config.deceleration ?? 0.998, this._velocity = config.velocity, this._useNativeDriver = shouldUseNativeDriver(config), this.__isInteraction = config.isInteraction ?? !this._useNativeDriver, this.__iterations = config.iterations ?? 1;
}
__getNativeAnimationConfig() {
return {
type: "decay",
deceleration: this._deceleration,
velocity: this._velocity,
iterations: this.__iterations
};
}
start(fromValue, onUpdate, onEnd, previousAnimation, animatedValue) {
this.__active = !0, this._lastValue = fromValue, this._fromValue = fromValue, this._onUpdate = onUpdate, this.__onEnd = onEnd, this._startTime = Date.now(), this._useNativeDriver ? this.__startNativeAnimation(animatedValue) : this._animationFrame = requestAnimationFrame(this.onUpdate.bind(this));
}
onUpdate() {
const now = Date.now(),
value = this._fromValue + this._velocity / (1 - this._deceleration) * (1 - Math.exp(-(1 - this._deceleration) * (now - this._startTime)));
if (this._onUpdate(value), Math.abs(this._lastValue - value) < 0.1) {
this.__debouncedOnEnd({
finished: !0
});
return;
}
this._lastValue = value, this.__active && (this._animationFrame = requestAnimationFrame(this.onUpdate.bind(this)));
}
stop() {
super.stop(), this.__active = !1, global.cancelAnimationFrame(this._animationFrame), this.__debouncedOnEnd({
finished: !1
});
}
}
var DecayAnimation_default = DecayAnimation;
export { DecayAnimation, DecayAnimation_default as default };
//# sourceMappingURL=DecayAnimation.mjs.map