popmotion/lib/utils/smooth.js

The animator's toolbox

import { smoothFrame } from './smooth-frame';
import { getFrameData } from 'framesync';
export const smooth = (strength = 50) => {
    let previousValue = 0;
    let lastUpdated = 0;
    return (v) => {
        const currentFramestamp = getFrameData().timestamp;
        const timeDelta = currentFramestamp !== lastUpdated ? currentFramestamp - lastUpdated : 0;
        const newValue = timeDelta
            ? smoothFrame(previousValue, v, timeDelta, strength)
            : previousValue;
        lastUpdated = currentFramestamp;
        previousValue = newValue;
        return newValue;
    };
};
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