Half Circle List View

MyView.java

package io.ehdev.android.example.wheel.layout;

import android.content.Context;
import android.graphics.Canvas;
import android.util.DisplayMetrics;
import android.widget.TextView;

public class MyView extends TextView {

    private static final int MAX_INDENT = 300;
    private static final String TAG = MyView.class.getSimpleName();

    public MyView(Context context) {
        super(context);
    }

    public void onDraw(Canvas canvas){
        canvas.save();
        float indent = getIndent(getY());
        canvas.translate(indent, 0);
        super.onDraw(canvas);
        canvas.restore();
    }

    public float getIndent(float distance){
        float x_vertex = MAX_INDENT;
        DisplayMetrics displayMetrics = getContext().getResources().getDisplayMetrics();
        float y_vertex = displayMetrics.heightPixels / 2 / displayMetrics.density;
        double a = ( 0 - x_vertex ) / ( Math.pow(( 0 - y_vertex), 2) ) ;
        float indent = (float) (a * Math.pow((distance - y_vertex), 2) + x_vertex);
        return indent;
    }
}

Hello,

I was trying to make this circular list horizontally, instead of vertically, but not getting the expected result.
Could you please tell me, what exact changes are required to make the horizontal circular list.

Thanks,
Sumeet Guha.