/ Animations

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

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/.

GIF LOADING

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

CONTRIBUTION

All bugs, feature requests, feedback, etc. are welcome. Please, feel free to create an issue.

If you have new ideas, feel free to contribute by opening pull requests on dev branch.

APPS USING IT

Are you using this library in your app? Let us know and we'll show it here.

TO DO

  • [ ] Add tension modifier for elastic easing
  • [ ] Add path interpolator editor
  • [ ] Add sample for google play

GitHub