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Diffstat (limited to 'node_modules/svelte/src/runtime/easing/index.js')
| -rw-r--r-- | node_modules/svelte/src/runtime/easing/index.js | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/node_modules/svelte/src/runtime/easing/index.js b/node_modules/svelte/src/runtime/easing/index.js new file mode 100644 index 0000000..486b967 --- /dev/null +++ b/node_modules/svelte/src/runtime/easing/index.js @@ -0,0 +1,309 @@ +/* +Adapted from https://github.com/mattdesl +Distributed under MIT License https://github.com/mattdesl/eases/blob/master/LICENSE.md +*/ +export { identity as linear } from '../internal/index.js'; + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function backInOut(t) { + const s = 1.70158 * 1.525; + if ((t *= 2) < 1) return 0.5 * (t * t * ((s + 1) * t - s)); + return 0.5 * ((t -= 2) * t * ((s + 1) * t + s) + 2); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function backIn(t) { + const s = 1.70158; + return t * t * ((s + 1) * t - s); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function backOut(t) { + const s = 1.70158; + return --t * t * ((s + 1) * t + s) + 1; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function bounceOut(t) { + const a = 4.0 / 11.0; + const b = 8.0 / 11.0; + const c = 9.0 / 10.0; + const ca = 4356.0 / 361.0; + const cb = 35442.0 / 1805.0; + const cc = 16061.0 / 1805.0; + const t2 = t * t; + return t < a + ? 7.5625 * t2 + : t < b + ? 9.075 * t2 - 9.9 * t + 3.4 + : t < c + ? ca * t2 - cb * t + cc + : 10.8 * t * t - 20.52 * t + 10.72; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function bounceInOut(t) { + return t < 0.5 ? 0.5 * (1.0 - bounceOut(1.0 - t * 2.0)) : 0.5 * bounceOut(t * 2.0 - 1.0) + 0.5; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function bounceIn(t) { + return 1.0 - bounceOut(1.0 - t); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function circInOut(t) { + if ((t *= 2) < 1) return -0.5 * (Math.sqrt(1 - t * t) - 1); + return 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function circIn(t) { + return 1.0 - Math.sqrt(1.0 - t * t); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function circOut(t) { + return Math.sqrt(1 - --t * t); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function cubicInOut(t) { + return t < 0.5 ? 4.0 * t * t * t : 0.5 * Math.pow(2.0 * t - 2.0, 3.0) + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function cubicIn(t) { + return t * t * t; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function cubicOut(t) { + const f = t - 1.0; + return f * f * f + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function elasticInOut(t) { + return t < 0.5 + ? 0.5 * Math.sin(((+13.0 * Math.PI) / 2) * 2.0 * t) * Math.pow(2.0, 10.0 * (2.0 * t - 1.0)) + : 0.5 * + Math.sin(((-13.0 * Math.PI) / 2) * (2.0 * t - 1.0 + 1.0)) * + Math.pow(2.0, -10.0 * (2.0 * t - 1.0)) + + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function elasticIn(t) { + return Math.sin((13.0 * t * Math.PI) / 2) * Math.pow(2.0, 10.0 * (t - 1.0)); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function elasticOut(t) { + return Math.sin((-13.0 * (t + 1.0) * Math.PI) / 2) * Math.pow(2.0, -10.0 * t) + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function expoInOut(t) { + return t === 0.0 || t === 1.0 + ? t + : t < 0.5 + ? +0.5 * Math.pow(2.0, 20.0 * t - 10.0) + : -0.5 * Math.pow(2.0, 10.0 - t * 20.0) + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function expoIn(t) { + return t === 0.0 ? t : Math.pow(2.0, 10.0 * (t - 1.0)); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function expoOut(t) { + return t === 1.0 ? t : 1.0 - Math.pow(2.0, -10.0 * t); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quadInOut(t) { + t /= 0.5; + if (t < 1) return 0.5 * t * t; + t--; + return -0.5 * (t * (t - 2) - 1); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quadIn(t) { + return t * t; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quadOut(t) { + return -t * (t - 2.0); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quartInOut(t) { + return t < 0.5 ? +8.0 * Math.pow(t, 4.0) : -8.0 * Math.pow(t - 1.0, 4.0) + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quartIn(t) { + return Math.pow(t, 4.0); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quartOut(t) { + return Math.pow(t - 1.0, 3.0) * (1.0 - t) + 1.0; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quintInOut(t) { + if ((t *= 2) < 1) return 0.5 * t * t * t * t * t; + return 0.5 * ((t -= 2) * t * t * t * t + 2); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quintIn(t) { + return t * t * t * t * t; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function quintOut(t) { + return --t * t * t * t * t + 1; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function sineInOut(t) { + return -0.5 * (Math.cos(Math.PI * t) - 1); +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function sineIn(t) { + const v = Math.cos(t * Math.PI * 0.5); + if (Math.abs(v) < 1e-14) return 1; + else return 1 - v; +} + +/** + * https://svelte.dev/docs/svelte-easing + * @param {number} t + * @returns {number} + */ +export function sineOut(t) { + return Math.sin((t * Math.PI) / 2); +} |