@tamagui/react-native-web-lite/dist/cjs/vendor/react-native/Animated/SpringConfig.cjs

React Native for Web

var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
    for (var name in all) __defProp(target, name, {
      get: all[name],
      enumerable: !0
    });
  },
  __copyProps = (to, from, except, desc) => {
    if (from && typeof from == "object" || typeof from == "function") for (let key of __getOwnPropNames(from)) !__hasOwnProp.call(to, key) && key !== except && __defProp(to, key, {
      get: () => from[key],
      enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable
    });
    return to;
  };
var __toCommonJS = mod => __copyProps(__defProp({}, "__esModule", {
  value: !0
}), mod);
var SpringConfig_exports = {};
__export(SpringConfig_exports, {
  default: () => SpringConfig_default
});
module.exports = __toCommonJS(SpringConfig_exports);
function stiffnessFromOrigamiValue(oValue) {
  return (oValue - 30) * 3.62 + 194;
}
function dampingFromOrigamiValue(oValue) {
  return (oValue - 8) * 3 + 25;
}
function fromOrigamiTensionAndFriction(tension, friction) {
  return {
    stiffness: stiffnessFromOrigamiValue(tension),
    damping: dampingFromOrigamiValue(friction)
  };
}
function fromBouncinessAndSpeed(bounciness, speed) {
  function normalize(value, startValue, endValue) {
    return (value - startValue) / (endValue - startValue);
  }
  function projectNormal(n, start, end) {
    return start + n * (end - start);
  }
  function linearInterpolation(t, start, end) {
    return t * end + (1 - t) * start;
  }
  function quadraticOutInterpolation(t, start, end) {
    return linearInterpolation(2 * t - t * t, start, end);
  }
  function b3Friction1(x) {
    return 7e-4 * x ** 3 - 0.031 * x ** 2 + 0.64 * x + 1.28;
  }
  function b3Friction2(x) {
    return 44e-6 * x ** 3 - 6e-3 * x ** 2 + 0.36 * x + 2;
  }
  function b3Friction3(x) {
    return 45e-8 * x ** 3 - 332e-6 * x ** 2 + 0.1078 * x + 5.84;
  }
  function b3Nobounce(tension) {
    return tension <= 18 ? b3Friction1(tension) : tension > 18 && tension <= 44 ? b3Friction2(tension) : b3Friction3(tension);
  }
  let b = normalize(bounciness / 1.7, 0, 20);
  b = projectNormal(b, 0, 0.8);
  const s = normalize(speed / 1.7, 0, 20),
    bouncyTension = projectNormal(s, 0.5, 200),
    bouncyFriction = quadraticOutInterpolation(b, b3Nobounce(bouncyTension), 0.01);
  return {
    stiffness: stiffnessFromOrigamiValue(bouncyTension),
    damping: dampingFromOrigamiValue(bouncyFriction)
  };
}
var SpringConfig_default = {
  fromOrigamiTensionAndFriction,
  fromBouncinessAndSpeed
};