A recyclerview to apply the scaling effect on scrolling

HorizontalCarouselRecyclerView.kt

import android.animation.ArgbEvaluator
import android.content.Context
import android.graphics.ColorMatrix
import android.graphics.ColorMatrixColorFilter
import android.util.AttributeSet
import android.util.Log
import android.view.View
import android.widget.ImageView
import android.widget.TextView
import androidx.core.content.ContextCompat
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.omvana.mixer.R
import kotlin.math.pow

class HorizontalCarouselRecyclerView(context: Context, attrs: AttributeSet) : RecyclerView(context, attrs) {
    fun <T : ViewHolder> initialize(newAdapter: Adapter<T>) {
        layoutManager = ArcLayoutManager(context, HORIZONTAL)
        newAdapter.registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
            override fun onChanged() {
                post {
                    addOnScrollListener(object : OnScrollListener() {
                        override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                            super.onScrolled(recyclerView, dx, dy)
                            onScrollChanged()
                        }
                    })
                }
            }
        })
        adapter = newAdapter
    }

    private fun onScrollChanged() {
        post {
            (0 until childCount).forEach { position ->
                val child = getChildAt(position)
                val childCenterX = (child.left + child.right) / 2
                val scaleValue = getGaussianScale(childCenterX, 0.8f, 0.2f, 150.toDouble())
                child.scaleX = scaleValue
                child.scaleY = scaleValue
            }
        }
    }

    private fun getGaussianScale(
            childCenterX: Int,
            minScaleOffest: Float,
            scaleFactor: Float,
            spreadFactor: Double
    ): Float {
        val recyclerCenterX = (left + right) / 2
        return (Math.E.pow(-(childCenterX - recyclerCenterX.toDouble()).pow(2.toDouble()) / (2 * spreadFactor.pow(2.toDouble()))) * scaleFactor + minScaleOffest).toFloat()
    }

}