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/var/www/uibuilder.cmshelp.dk/httpdocs/node_modules/react-native/Libraries/Animated/SpringConfig.js

Text Base64

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 * @flow strict
 */

'use strict';

type SpringConfigType = {
  stiffness: number,
  damping: number,
  ...
};

function stiffnessFromOrigamiValue(oValue: number) {
  return (oValue - 30) * 3.62 + 194;
}

function dampingFromOrigamiValue(oValue: number) {
  return (oValue - 8) * 3 + 25;
}

export function fromOrigamiTensionAndFriction(
  tension: number,
  friction: number,
): SpringConfigType {
  return {
    stiffness: stiffnessFromOrigamiValue(tension),
    damping: dampingFromOrigamiValue(friction),
  };
}

export function fromBouncinessAndSpeed(
  bounciness: number,
  speed: number,
): SpringConfigType {
  function normalize(value: number, startValue: number, endValue: number) {
    return (value - startValue) / (endValue - startValue);
  }

function projectNormal(n: number, start: number, end: number) {
    return start + n * (end - start);
  }

function linearInterpolation(t: number, start: number, end: number) {
    return t * end + (1 - t) * start;
  }

function quadraticOutInterpolation(t: number, start: number, end: number) {
    return linearInterpolation(2 * t - t * t, start, end);
  }

function b3Friction1(x: number) {
    return 0.0007 * Math.pow(x, 3) - 0.031 * Math.pow(x, 2) + 0.64 * x + 1.28;
  }

function b3Friction2(x: number) {
    return 0.000044 * Math.pow(x, 3) - 0.006 * Math.pow(x, 2) + 0.36 * x + 2;
  }

function b3Friction3(x: number) {
    return (
      0.00000045 * Math.pow(x, 3) -
      0.000332 * Math.pow(x, 2) +
      0.1078 * x +
      5.84
    );
  }

let b = normalize(bounciness / 1.7, 0, 20);
  b = projectNormal(b, 0, 0.8);
  const s = normalize(speed / 1.7, 0, 20);
  const bouncyTension = projectNormal(s, 0.5, 200);
  const bouncyFriction = quadraticOutInterpolation(
    b,
    b3Nobounce(bouncyTension),
    0.01,
  );

return {
    stiffness: stiffnessFromOrigamiValue(bouncyTension),
    damping: dampingFromOrigamiValue(bouncyFriction),
  };
}

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Name	Size	Perms	Modified	Actions
animations DIR	-	drwxr-xr-x	2025-03-28 11:04:42	Edit Download recursive recursive
components DIR	-	drwxr-xr-x	2025-03-28 11:04:42	Edit Download recursive recursive
nodes DIR	-	drwxr-xr-x	2025-03-28 11:04:42	Edit Download recursive recursive
Animated.d.ts	18.43 KB	lrw-r--r--	2025-03-28 11:04:43	Edit Download recursive recursive
Animated.js	1.57 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
AnimatedEvent.js	7.08 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
AnimatedImplementation.js	20.19 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
AnimatedMock.js	5.29 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
AnimatedPlatformConfig.js	276 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
AnimatedWeb.js	1021 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
bezier.js	4.07 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
createAnimatedComponent.js	3.24 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
Easing.d.ts	1.12 KB	lrw-r--r--	2025-03-28 11:04:43	Edit Download recursive recursive
Easing.js	6.15 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
NativeAnimatedAllowlist.js	3.07 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
NativeAnimatedModule.js	424 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
NativeAnimatedTurboModule.js	444 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
shouldUseTurboAnimatedModule.js	439 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
SpringConfig.js	2.32 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
useAnimatedProps.js	11.88 KB	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive
useAnimatedValue.d.ts	362 B	lrw-r--r--	2025-03-28 11:04:43	Edit Download recursive recursive
useAnimatedValue.js	646 B	lrw-r--r--	2025-03-28 11:04:42	Edit Download recursive recursive

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