Sky Alpha Mask

package net.jnk.blockles;

import java.awt.Color;
import java.awt.Graphics;

public class backdrop {

    public static double alpha;

    public void calculateAlpha(double currentY){
        int yValue = (int)currentY;

        if (yValue < 20){
            alpha = 0;
        } else {
            alpha = ((yValue - 19) * 2.55);
        }

        if (alpha > 255){
            alpha = 255;
        }
    }

    public void render(Graphics g){
        g.setColor(new Color(66, 66, 66, (int)alpha));
            g.fillRect(0, 0, Component.pixel.width, Component.pixel.height);
    }

}