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Example code of smnandre/easing-functions

Informations about the package easing-functions

Easing & Timing PHP Functions

composer require smnandre/easing-functions
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EasingFunctions is a PHP library that provides a collection of easing functions commonly used in animations, transitions, and smooth interpolations.

It includes standard easing equations: quadratic, cubic, quartic, quintic, sine, exponential, circular, elastic, and bounce functions.

Each of them is available in three variations:

Easing Functions

x In Out InOut
Cubic
easeInCubic
easeOutCubic
easeInOutCubic
Quart
easeInQuart
easeOutQuart
easeInOutQuart
Quad
easeInQuad
easeOutQuad
easeInOutQuad
Quint
easeInQuint
easeOutQuint
easeInOutQuint
Sine
easeInSine
easeOutSine
easeInOutSine
Expo
easeInExpo
easeOutExpo
easeInOutExpo
Circ
easeInCirc
easeOutCirc
easeInOutCirc
Back
easeInBack
easeOutBack
easeInOutBack
Bounce
easeInBounce
easeOutBounce
easeInOutBounce
Elastic
easeInElastic
easeOutElastic
easeInOutElastic

Installation

Usage

Functions

Easing Functions

Name Formulae Preview
easeOutCubic $1 - pow(1 - x, 3)$
easeInOutCubic $x < 0.5 ? 4 * pow(x, 3) : 1 - pow(-2 * x + 2, 3) / 2$
easeInQuart $pow(x, 4)$
easeOutQuart $1 - pow(1 - x, 4)$
easeInOutQuart $x < 0.5 ? 8 * pow(x, 4) : 1 - pow(-2 * x + 2, 4) / 2$
easeInCubic $pow(x, 3)$
easeInQuad $x * x$
easeOutQuad $1 - (1 - x) * (1 - x)$
easeInOutQuad $x < 0.5 ? 2 * x * x : 1 - pow(-2 * x + 2, 2) / 2$
easeInQuint $pow(x, 5)$
easeOutQuint $1 - pow(1 - x, 5)$
easeInOutQuint $x < 0.5 ? 16 * pow(x, 5) : 1 - pow(-2 * x + 2, 5) / 2$
easeInSine $1 - cos((x * pi()) / 2)$
easeOutSine $sin((x * pi()) / 2)$
easeInOutSine $-(cos(pi() * x) - 1) / 2$
easeInExpo $x == 0 ? 0 : pow(2, 10 * x - 10)$
easeOutExpo $x == 1 ? 1 : 1 - pow(2, -10 * x)$
easeInOutExpo $x == 0 ? 0 : x == 1 ? 1 : x < 0.5 ? pow(2, 20 * x - 10) / 2 : (2 - pow(2, -20 * x + 10)) / 2$
easeInCirc $1 - sqrt(1 - pow(x, 2))$
easeOutCirc $sqrt(1 - pow(x - 1, 2))$
easeInOutCirc $x < 0.5 ? (1 - sqrt(1 - pow(2 * x, 2))) / 2 : (sqrt(1 - pow(-2 * x + 2, 2)) + 1) / 2$
easeInBack $2.70158 * pow(x, 3) - 1.70158 * pow(x, 2)$
easeOutBack $1 + 2.70158 * pow(x - 1, 3) + 1.70158 * pow(x - 1, 2)$
easeInOutBack $x < 0.5 ? (pow(2 * x, 2) * ((3.59258 * 2 * x) - 2.59258)) / 2 : (pow(2 * x - 2, 2) * ((3.59258 * (x * 2 - 2)) + 2.59258) + 2) / 2$
easeInBounce $1 - easeOutBounce(1 - x)$
easeOutBounce See bounceOut function
easeInOutBounce $x < 0.5 ? (1 - easeOutBounce(1 - 2 * x)) / 2 : (1 + easeOutBounce(2 * x - 1)) / 2$
easeInElastic $x == 0 ? 0 : x == 1 ? 1 : -pow(2, 10 * x - 10) * sin((x * 10 - 10.75) * ((2 * pi()) / 3))$
easeOutElastic $x == 0 ? 0 : x == 1 ? 1 : pow(2, -10 * x) * sin((x * 10 - 0.75) * ((2 * pi()) / 3)) + 1$
easeInOutElastic $x == 0 ? 0 : x == 1 ? 1 : x < 0.5 ? -(pow(2, 20 * x - 10) * sin((20 * x - 11.125) * ((2 * pi()) / 4.5))) / 2 : (pow(2, -20 * x + 10) * sin((20 * x - 11.125) * ((2 * pi()) / 4.5))) / 2 + 1$

License

This project is licensed under the MIT License. See the LICENSE file for more information.

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