@studiometa/js-toolkit/utils/math/spring.js

A set of useful little bits of JavaScript to boost your project! 🚀

function spring(targetValue, currentValue, currentVelocity, stiffness = 0.1, damping = 0.6, mass = 1, precision = 1 / 1e4) {
  const force = (targetValue - currentValue) * stiffness;
  const acceleration = force / mass;
  const velocity = currentVelocity * damping + acceleration;
  const value = Math.abs(targetValue - currentValue) < precision && Math.abs(velocity) < precision ? targetValue : currentValue + velocity;
  return [value, value === targetValue ? 0 : velocity];
}
export {
  spring
};
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