osu-lazer/osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPoint.cs

// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE

using OpenTK;
using OpenTK.Graphics;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Game.Skinning;

namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
{
    public class FollowPoint : Container
    {
        private const float width = 8;

        public override bool RemoveWhenNotAlive => false;

        public FollowPoint()
        {
            Origin = Anchor.Centre;

            Child = new SkinnableDrawable("Play/osu/followpoint", _ => new Container
            {
                Masking = true,
                AutoSizeAxes = Axes.Both,
                CornerRadius = width / 2,
                EdgeEffect = new EdgeEffectParameters
                {
                    Type = EdgeEffectType.Glow,
                    Colour = Color4.White.Opacity(0.2f),
                    Radius = 4,
                },
                Child = new Box
                {
                    Size = new Vector2(width),
                    Blending = BlendingMode.Additive,
                    Origin = Anchor.Centre,
                    Anchor = Anchor.Centre,
                }
            }, restrictSize: false)
            {
                Alpha = 0.5f,
            };
        }
    }
}