A port of Robert Penner's easing equations to kotlin on Android

Easings for Android

If you are not pleased with the native interpolators on Android. Here are 30 custom ones to make motion look more real.
This small library is a port of Robert Penner's easing equations to kotlin on Android to add flavors to your animations, and it's based on https://easings.net/.

Until a demo gets released on Play, you can execute the sample and see the library's custom interpolators in action.

You can also experiment with the path interpolator editor to get the control points for a custom interpolator using PathInterpolatorCompat.create(x1, y1, x2, y2).

SETUP

Dependency should be declared in your app module level build.gradle file:

dependencies {

    implementation 'com.ramijemli:easings:1.0.0' 

}

HOW TO USE

This can be used exactly like the native interpolators.

ValueAnimator.ofFloat(0f,1f).apply {
    interpolator = Interpolators(Easings.SIN_IN)
    start()
}

ObjectAnimator.ofFloat(textView, "translationX", 100f).apply {
    interpolator = Interpolators(Easings.ELASTIC_IN_OUT)
    start()
}

myView.animate().apply {
    translationYBy(100f)
    interpolator = Interpolators(Easings.BOUNCE_OUT)
    start()
}

Interpolator	Behavior
Sinusoidal ease in `Easings.SIN_IN`
Sinusoidal ease out `Easings.SIN_OUT`
Sinusoidal ease in out `Easings.SIN_IN_OUT`
Quadratic ease in `Easings.QUAD_IN`
Quadratic ease out `Easings.QUAD_OUT`
Quadratic ease in out `Easings.QUAD_IN_OUT`
Cubic ease in `Easings.CUBIC_IN`
Cubic ease out `Easings.CUBIC_OUT`
Cubic ease in out `Easings.CUBIC_IN_OUT`
Quartic ease in `Easings.QUART_IN`
Quartic ease out `Easings.QUART_OUT`
Quartic ease in out `Easings.QUART_IN_OUT`
Quintic ease in `Easings.QUINT_IN`
Quintic ease out `Easings.QUINT_OUT`
Quintic ease in out `Easings.QUINT_IN_OUT`
Exponential ease in `Easings.EXP_IN`
Exponential ease out `Easings.EXP_OUT`
Exponential ease in out `Easings.EXP_IN_OUT`
Circular ease in `Easings.CIRC_IN`
Circular ease out `Easings.CIRC_OUT`
Circular ease in out `Easings.CIRC_IN_OUT`
Back ease in `Easings.BACK_IN`
Back ease out `Easings.BACK_OUT`
Back ease in out `Easings.BACK_IN_OUT`
Elastic ease in `Easings.ELASTIC_IN`
Elastic ease out `Easings.ELASTIC_OUT`
Elastic ease in out `Easings.ELASTIC_IN_OUT`
Bounce ease in `Easings.BOUNCE_IN`
Bounce ease out `Easings.BOUNCE_OUT`
Bounce ease in out `Easings.BOUNCE_IN_OUT`