整合包

gameplay bundle has been imported together
2025-08-09 18:29:32 +08:00
parent e7962bf492
commit 1d818fa4eb
1654 changed files with 431813 additions and 103 deletions
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2020 setchi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -0,0 +1,7 @@
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+guid: 572727be5c765482ca314fb2581d9392
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@@ -0,0 +1,14 @@
+# FancyScrollView
+
+It is a general-purpose ScrollView component that can implement scroll animation freely. It also supports infinite scrolling.
+
+WebGL Demo: https://setchi.jp/FancyScrollView/demo
+API Documentation: https://setchi.jp/FancyScrollView/api/FancyScrollView.html
+
+This library is free and opensource on GitHub. More info, supports and sourcecodes, see https://github.com/setchi/FancyScrollView.
+
+## Author
+[setchi](https://github.com/setchi)
+
+## License
+[MIT](https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
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+timeCreated: 1487434893
+licenseType: Free
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+licenseType: Pro
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@@ -0,0 +1,16 @@
+{
+    "name": "FancyScrollView.Editor",
+    "references": [
+        "FancyScrollView"
+    ],
+    "optionalUnityReferences": [],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": []
+}
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@@ -0,0 +1,124 @@
+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using UnityEditor;
+using UnityEditor.AnimatedValues;
+
+// For manteinance, every new [SerializeField] variable in Scroller must be declared here
+
+namespace FancyScrollView
+{
+    [CustomEditor(typeof(Scroller))]
+    [CanEditMultipleObjects]
+    public class ScrollerEditor : Editor
+    {
+        SerializedProperty viewport;
+        SerializedProperty scrollDirection;
+        SerializedProperty movementType;
+        SerializedProperty elasticity;
+        SerializedProperty scrollSensitivity;
+        SerializedProperty inertia;
+        SerializedProperty decelerationRate;
+        SerializedProperty snap;
+        SerializedProperty draggable;
+        SerializedProperty scrollbar;
+
+        AnimBool showElasticity;
+        AnimBool showInertiaRelatedValues;
+
+        void OnEnable()
+        {
+            viewport = serializedObject.FindProperty("viewport");
+            scrollDirection = serializedObject.FindProperty("scrollDirection");
+            movementType = serializedObject.FindProperty("movementType");
+            elasticity = serializedObject.FindProperty("elasticity");
+            scrollSensitivity = serializedObject.FindProperty("scrollSensitivity");
+            inertia = serializedObject.FindProperty("inertia");
+            decelerationRate = serializedObject.FindProperty("decelerationRate");
+            snap = serializedObject.FindProperty("snap");
+            draggable = serializedObject.FindProperty("draggable");
+            scrollbar = serializedObject.FindProperty("scrollbar");
+
+            showElasticity = new AnimBool(Repaint);
+            showInertiaRelatedValues = new AnimBool(Repaint);
+            SetAnimBools(true);
+        }
+
+        void OnDisable()
+        {
+            showElasticity.valueChanged.RemoveListener(Repaint);
+            showInertiaRelatedValues.valueChanged.RemoveListener(Repaint);
+        }
+
+        void SetAnimBools(bool instant)
+        {
+            SetAnimBool(showElasticity, !movementType.hasMultipleDifferentValues && movementType.enumValueIndex == (int)MovementType.Elastic, instant);
+            SetAnimBool(showInertiaRelatedValues, !inertia.hasMultipleDifferentValues && inertia.boolValue, instant);
+        }
+
+        void SetAnimBool(AnimBool a, bool value, bool instant)
+        {
+            if (instant)
+            {
+                a.value = value;
+            }
+            else
+            {
+                a.target = value;
+            }
+        }
+
+        public override void OnInspectorGUI()
+        {
+            SetAnimBools(false);
+
+            serializedObject.Update();
+            EditorGUILayout.PropertyField(viewport);
+            EditorGUILayout.PropertyField(scrollDirection);
+            EditorGUILayout.PropertyField(movementType);
+            DrawMovementTypeRelatedValue();
+            EditorGUILayout.PropertyField(scrollSensitivity);
+            EditorGUILayout.PropertyField(inertia);
+            DrawInertiaRelatedValues();
+            EditorGUILayout.PropertyField(draggable);
+            EditorGUILayout.PropertyField(scrollbar);
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        void DrawMovementTypeRelatedValue()
+        {
+            using (var group = new EditorGUILayout.FadeGroupScope(showElasticity.faded))
+            {
+                if (!group.visible)
+                {
+                    return;
+                }
+
+                using (new EditorGUI.IndentLevelScope())
+                {
+                    EditorGUILayout.PropertyField(elasticity);
+                }
+            }
+        }
+
+        void DrawInertiaRelatedValues()
+        {
+            using (var group = new EditorGUILayout.FadeGroupScope(showInertiaRelatedValues.faded))
+            {
+                if (!group.visible)
+                {
+                    return;
+                }
+
+                using (new EditorGUI.IndentLevelScope())
+                {
+                    EditorGUILayout.PropertyField(decelerationRate);
+                    EditorGUILayout.PropertyField(snap);
+                }
+            }
+        }
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using UnityEngine;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyScrollView{TItemData, TContext}"/> のセルを実装するための抽象基底クラス.
+    /// <see cref="FancyCell{TItemData, TContext}.Context"/> が不要な場合は
+    /// 代わりに <see cref="FancyCell{TItemData}"/> を使用します.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="Context"/> の型.</typeparam>
+    public abstract class FancyCell<TItemData, TContext> : MonoBehaviour where TContext : class, new()
+    {
+        /// <summary>
+        /// このセルで表示しているデータのインデックス.
+        /// </summary>
+        public int Index { get; set; } = -1;
+
+        /// <summary>
+        /// このセルの可視状態.
+        /// </summary>
+        public virtual bool IsVisible => gameObject.activeSelf;
+
+        /// <summary>
+        /// <see cref="FancyScrollView{TItemData, TContext}.Context"/> の参照.
+        /// セルとスクロールビュー間で同じインスタンスが共有されます. 情報の受け渡しや状態の保持に使用します.
+        /// </summary>
+        protected TContext Context { get; private set; }
+
+        /// <summary>
+        /// <see cref="Context"/> をセットします.
+        /// </summary>
+        /// <param name="context">コンテキスト.</param>
+        public virtual void SetContext(TContext context) => Context = context;
+
+        /// <summary>
+        /// 初期化を行います.
+        /// </summary>
+        public virtual void Initialize() { }
+
+        /// <summary>
+        /// このセルの可視状態を設定します.
+        /// </summary>
+        /// <param name="visible">可視状態なら <c>true</c>, 非可視状態なら <c>false</c>.</param>
+        public virtual void SetVisible(bool visible) => gameObject.SetActive(visible);
+
+        /// <summary>
+        /// アイテムデータに基づいてこのセルの表示内容を更新します.
+        /// </summary>
+        /// <param name="itemData">アイテムデータ.</param>
+        public abstract void UpdateContent(TItemData itemData);
+
+        /// <summary>
+        /// <c>0.0f</c> ~ <c>1.0f</c> の値に基づいてこのセルのスクロール位置を更新します.
+        /// </summary>
+        /// <param name="position">ビューポート範囲の正規化されたスクロール位置.</param>
+        public abstract void UpdatePosition(float position);
+    }
+
+    /// <summary>
+    /// <see cref="FancyScrollView{TItemData}"/> のセルを実装するための抽象基底クラス.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <seealso cref="FancyCell{TItemData, TContext}"/>
+    public abstract class FancyCell<TItemData> : FancyCell<TItemData, NullContext>
+    {
+        /// <inheritdoc/>
+        public sealed override void SetContext(NullContext context) => base.SetContext(context);
+    }
+}
@@ -0,0 +1,12 @@
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+timeCreated: 1487183338
+licenseType: Free
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// スクロールビューを実装するための抽象基底クラス.
+    /// 無限スクロールおよびスナップに対応しています.
+    /// <see cref="FancyScrollView{TItemData, TContext}.Context"/> が不要な場合は
+    /// 代わりに <see cref="FancyScrollView{TItemData}"/> を使用します.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="Context"/> の型.</typeparam>
+    public abstract class FancyScrollView<TItemData, TContext> : MonoBehaviour where TContext : class, new()
+    {
+        /// <summary>
+        /// セル同士の間隔.
+        /// </summary>
+        [SerializeField, Range(1e-2f, 1f)] protected float cellInterval = 0.2f;
+
+        /// <summary>
+        /// スクロール位置の基準.
+        /// </summary>
+        /// <remarks>
+        /// たとえば、 <c>0.5</c> を指定してスクロール位置が <c>0</c> の場合, 中央に最初のセルが配置されます.
+        /// </remarks>
+        [SerializeField, Range(0f, 1f)] protected float scrollOffset = 0.5f;
+
+        /// <summary>
+        /// セルを循環して配置させるどうか.
+        /// </summary>
+        /// <remarks>
+        /// <c>true</c> にすると最後のセルの後に最初のセル, 最初のセルの前に最後のセルが並ぶようになります.
+        /// 無限スクロールを実装する場合は <c>true</c> を指定します.
+        /// </remarks>
+        [SerializeField] protected bool loop = false;
+
+        /// <summary>
+        /// セルの親要素となる <c>Transform</c>.
+        /// </summary>
+        [SerializeField] protected Transform cellContainer = default;
+
+        readonly IList<FancyCell<TItemData, TContext>> pool = new List<FancyCell<TItemData, TContext>>();
+
+        /// <summary>
+        /// 初期化済みかどうか.
+        /// </summary>
+        protected bool initialized;
+
+        /// <summary>
+        /// 現在のスクロール位置.
+        /// </summary>
+        protected float currentPosition;
+
+        /// <summary>
+        /// セルの Prefab.
+        /// </summary>
+        protected abstract GameObject CellPrefab { get; }
+
+        /// <summary>
+        /// アイテム一覧のデータ.
+        /// </summary>
+        protected IList<TItemData> ItemsSource { get; set; } = new List<TItemData>();
+
+        /// <summary>
+        /// <typeparamref name="TContext"/> のインスタンス.
+        /// セルとスクロールビュー間で同じインスタンスが共有されます. 情報の受け渡しや状態の保持に使用します.
+        /// </summary>
+        protected TContext Context { get; } = new TContext();
+
+        /// <summary>
+        /// 初期化を行います.
+        /// </summary>
+        /// <remarks>
+        /// 最初にセルが生成される直前に呼び出されます.
+        /// </remarks>
+        protected virtual void Initialize() { }
+
+        /// <summary>
+        /// 渡されたアイテム一覧に基づいて表示内容を更新します.
+        /// </summary>
+        /// <param name="itemsSource">アイテム一覧.</param>
+        protected virtual void UpdateContents(IList<TItemData> itemsSource)
+        {
+            ItemsSource = itemsSource;
+            Refresh();
+        }
+
+        /// <summary>
+        /// セルのレイアウトを強制的に更新します.
+        /// </summary>
+        protected virtual void Relayout() => UpdatePosition(currentPosition, false);
+
+        /// <summary>
+        /// セルのレイアウトと表示内容を強制的に更新します.
+        /// </summary>
+        protected virtual void Refresh() => UpdatePosition(currentPosition, true);
+
+        /// <summary>
+        /// スクロール位置を更新します.
+        /// </summary>
+        /// <param name="position">スクロール位置.</param>
+        protected virtual void UpdatePosition(float position) => UpdatePosition(position, false);
+
+        void UpdatePosition(float position, bool forceRefresh)
+        {
+            if (!initialized)
+            {
+                Initialize();
+                initialized = true;
+            }
+
+            currentPosition = position;
+
+            var p = position - scrollOffset / cellInterval;
+            var firstIndex = Mathf.CeilToInt(p);
+            var firstPosition = (Mathf.Ceil(p) - p) * cellInterval;
+
+            if (firstPosition + pool.Count * cellInterval < 1f)
+            {
+                ResizePool(firstPosition);
+            }
+
+            UpdateCells(firstPosition, firstIndex, forceRefresh);
+        }
+
+        void ResizePool(float firstPosition)
+        {
+            Debug.Assert(CellPrefab != null);
+            Debug.Assert(cellContainer != null);
+
+            var addCount = Mathf.CeilToInt((1f - firstPosition) / cellInterval) - pool.Count;
+            for (var i = 0; i < addCount; i++)
+            {
+                var cell = Instantiate(CellPrefab, cellContainer).GetComponent<FancyCell<TItemData, TContext>>();
+                if (cell == null)
+                {
+                    throw new MissingComponentException(string.Format(
+                        "FancyCell<{0}, {1}> component not found in {2}.",
+                        typeof(TItemData).FullName, typeof(TContext).FullName, CellPrefab.name));
+                }
+
+                cell.SetContext(Context);
+                cell.Initialize();
+                cell.SetVisible(false);
+                pool.Add(cell);
+            }
+        }
+
+        void UpdateCells(float firstPosition, int firstIndex, bool forceRefresh)
+        {
+            for (var i = 0; i < pool.Count; i++)
+            {
+                var index = firstIndex + i;
+                var position = firstPosition + i * cellInterval;
+                var cell = pool[CircularIndex(index, pool.Count)];
+
+                if (loop)
+                {
+                    index = CircularIndex(index, ItemsSource.Count);
+                }
+
+                if (index < 0 || index >= ItemsSource.Count || position > 1f)
+                {
+                    cell.SetVisible(false);
+                    continue;
+                }
+
+                if (forceRefresh || cell.Index != index || !cell.IsVisible)
+                {
+                    cell.Index = index;
+                    cell.SetVisible(true);
+                    cell.UpdateContent(ItemsSource[index]);
+                }
+
+                cell.UpdatePosition(position);
+            }
+        }
+
+        int CircularIndex(int i, int size) => size < 1 ? 0 : i < 0 ? size - 1 + (i + 1) % size : i % size;
+
+#if UNITY_EDITOR
+        bool cachedLoop;
+        float cachedCellInterval, cachedScrollOffset;
+
+        void LateUpdate()
+        {
+            if (cachedLoop != loop ||
+                cachedCellInterval != cellInterval ||
+                cachedScrollOffset != scrollOffset)
+            {
+                cachedLoop = loop;
+                cachedCellInterval = cellInterval;
+                cachedScrollOffset = scrollOffset;
+
+                UpdatePosition(currentPosition);
+            }
+        }
+#endif
+    }
+
+    /// <summary>
+    /// <see cref="FancyScrollView{TItemData}"/> のコンテキストクラス.
+    /// </summary>
+    public sealed class NullContext { }
+
+    /// <summary>
+    /// スクロールビューを実装するための抽象基底クラス.
+    /// 無限スクロールおよびスナップに対応しています.
+    /// </summary>
+    /// <typeparam name="TItemData"></typeparam>
+    /// <seealso cref="FancyScrollView{TItemData, TContext}"/>
+    public abstract class FancyScrollView<TItemData> : FancyScrollView<TItemData, NullContext> { }
+}
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+{
+	"name": "FancyScrollView"
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using UnityEngine;
+using System.Linq;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// 複数の <see cref="FancyCell{TItemData, TContext}"/> を持つセルグループ実装するための抽象基底クラス.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="FancyCell{TItemData, TContext}.Context"/> の型.</typeparam>
+    public abstract class FancyCellGroup<TItemData, TContext> : FancyCell<TItemData[], TContext>
+        where TContext : class, IFancyCellGroupContext, new()
+    {
+        /// <summary>
+        /// このグループで表示するセルの配列.
+        /// </summary>
+        protected virtual FancyCell<TItemData, TContext>[] Cells { get; private set; }
+
+        /// <summary>
+        /// このグループで表示するセルの配列をインスタンス化します.
+        /// </summary>
+        /// <returns>このグループで表示するセルの配列.</returns>
+        protected virtual FancyCell<TItemData, TContext>[] InstantiateCells()
+        {
+            return Enumerable.Range(0, Context.GetGroupCount())
+                .Select(_ => Instantiate(Context.CellTemplate, transform))
+                .Select(x => x.GetComponent<FancyCell<TItemData, TContext>>())
+                .ToArray();
+        }
+
+        /// <inheritdoc/>
+        public override void Initialize()
+        {
+            Cells = InstantiateCells();
+            Debug.Assert(Cells.Length == Context.GetGroupCount());
+
+            for (var i = 0; i < Cells.Length; i++)
+            {
+                Cells[i].SetContext(Context);
+                Cells[i].Initialize();
+            }
+        }
+
+        /// <inheritdoc/>
+        public override void UpdateContent(TItemData[] contents)
+        {
+            var firstCellIndex = Index * Context.GetGroupCount();
+
+            for (var i = 0; i < Cells.Length; i++)
+            {
+                Cells[i].Index = i + firstCellIndex;
+                Cells[i].SetVisible(i < contents.Length);
+
+                if (Cells[i].IsVisible)
+                {
+                    Cells[i].UpdateContent(contents[i]);
+                }
+            }
+        }
+
+        /// <inheritdoc/>
+        public override void UpdatePosition(float position)
+        {
+            for (var i = 0; i < Cells.Length; i++)
+            {
+                Cells[i].UpdatePosition(position);
+            }
+        }
+    }
+}
@@ -0,0 +1,11 @@
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@@ -0,0 +1,185 @@
+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using UnityEngine;
+using EasingCore;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// グリッドレイアウトのスクロールビューを実装するための抽象基底クラス.
+    /// 無限スクロールおよびスナップには対応していません.
+    /// <see cref="FancyScrollView{TItemData, TContext}.Context"/> が不要な場合は
+    /// 代わりに <see cref="FancyGridView{TItemData}"/> を使用します.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="FancyScrollView{TItemData, TContext}.Context"/> の型.</typeparam>
+    public abstract class FancyGridView<TItemData, TContext> : FancyScrollRect<TItemData[], TContext>
+        where TContext : class, IFancyGridViewContext, new()
+    {
+        /// <summary>
+        /// デフォルトのセルグループクラス.
+        /// </summary>
+        protected abstract class DefaultCellGroup : FancyCellGroup<TItemData, TContext> { }
+
+        /// <summary>
+        /// 最初にセルを配置する軸方向のセル同士の余白.
+        /// </summary>
+        [SerializeField] protected float startAxisSpacing = 0f;
+
+        /// <summary>
+        /// 最初にセルを配置する軸方向のセル数.
+        /// </summary>
+        [SerializeField] protected int startAxisCellCount = 4;
+
+        /// <summary>
+        /// セルのサイズ.
+        /// </summary>
+        [SerializeField] protected Vector2 cellSize = new Vector2(100f, 100f);
+
+        /// <summary>
+        /// セルのグループ Prefab.
+        /// </summary>
+        /// <remarks>
+        /// <see cref="FancyGridView{TItemData, TContext}"/> では,
+        /// <see cref="FancyScrollView{TItemData, TContext}.CellPrefab"/> を最初にセルを配置する軸方向のセルコンテナとして使用します.
+        /// </remarks>
+        protected sealed override GameObject CellPrefab => cellGroupTemplate;
+
+        /// <inheritdoc/>
+        protected override float CellSize => Scroller.ScrollDirection == ScrollDirection.Horizontal
+            ? cellSize.x
+            : cellSize.y;
+
+        /// <summary>
+        /// アイテムの総数.
+        /// </summary>
+        public int DataCount { get; private set; }
+
+        GameObject cellGroupTemplate;
+
+        /// <inheritdoc/>
+        protected override void Initialize()
+        {
+            base.Initialize();
+
+            Debug.Assert(startAxisCellCount > 0);
+
+            Context.ScrollDirection = Scroller.ScrollDirection;
+            Context.GetGroupCount = () => startAxisCellCount;
+            Context.GetStartAxisSpacing = () => startAxisSpacing;
+            Context.GetCellSize = () => Scroller.ScrollDirection == ScrollDirection.Horizontal
+                ? cellSize.y
+                : cellSize.x;
+
+            SetupCellTemplate();
+        }
+
+        /// <summary>
+        /// 最初にセルが生成される直前に呼び出されます.
+        /// <see cref="Setup{TGroup}(FancyCell{TItemData, TContext})"/> メソッドを使用してセルテンプレートのセットアップを行ってください.
+        /// </summary>
+        /// <example>
+        /// <code><![CDATA[
+        /// using UnityEngine;
+        /// using FancyScrollView;
+        /// 
+        /// public class MyGridView : FancyGridView<ItemData, Context>
+        /// {
+        ///     class CellGroup : DefaultCellGroup { }
+        /// 
+        ///     [SerializeField] Cell cellPrefab = default;
+        /// 
+        ///     protected override void SetupCellTemplate() => Setup<CellGroup>(cellPrefab);
+        /// }
+        /// ]]></code>
+        /// </example>
+        protected abstract void SetupCellTemplate();
+
+        /// <summary>
+        /// セルテンプレートのセットアップを行います.
+        /// </summary>
+        /// <param name="cellTemplate">セルのテンプレート.</param>
+        /// <typeparam name="TGroup">セルグループの型.</typeparam>
+        protected virtual void Setup<TGroup>(FancyCell<TItemData, TContext> cellTemplate)
+            where TGroup : FancyCell<TItemData[], TContext>
+        {
+            Context.CellTemplate = cellTemplate.gameObject;
+
+            cellGroupTemplate = new GameObject("Group").AddComponent<TGroup>().gameObject;
+            cellGroupTemplate.transform.SetParent(cellContainer, false);
+            cellGroupTemplate.SetActive(false);
+        }
+
+        /// <summary>
+        /// 渡されたアイテム一覧に基づいて表示内容を更新します.
+        /// </summary>
+        /// <param name="items">アイテム一覧.</param>
+        public virtual void UpdateContents(IList<TItemData> items)
+        {
+            DataCount = items.Count;
+
+            var itemGroups = items
+                .Select((item, index) => (item, index))
+                .GroupBy(
+                    x => x.index / startAxisCellCount,
+                    x => x.item)
+                .Select(group => group.ToArray())
+                .ToArray();
+
+            UpdateContents(itemGroups);
+        }
+
+        /// <summary>
+        /// 指定したアイテムの位置までジャンプします.
+        /// </summary>
+        /// <param name="itemIndex">アイテムのインデックス.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        protected override void JumpTo(int itemIndex, float alignment = 0.5f)
+        {
+            var groupIndex = itemIndex / startAxisCellCount;
+            base.JumpTo(groupIndex, alignment);
+        }
+
+        /// <summary>
+        /// 指定したアイテムの位置まで移動します.
+        /// </summary>
+        /// <param name="itemIndex">アイテムのインデックス.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        protected override void ScrollTo(int itemIndex, float duration, float alignment = 0.5f, Action onComplete = null)
+        {
+            var groupIndex = itemIndex / startAxisCellCount;
+            base.ScrollTo(groupIndex, duration, alignment, onComplete);
+        }
+
+        /// <summary>
+        /// 指定したアイテムの位置まで移動します.
+        /// </summary>
+        /// <param name="itemIndex">アイテムのインデックス.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="easing">移動に使用するイージング.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        protected override void ScrollTo(int itemIndex, float duration, Ease easing, float alignment = 0.5f, Action onComplete = null)
+        {
+            var groupIndex = itemIndex / startAxisCellCount;
+            base.ScrollTo(groupIndex, duration, easing, alignment, onComplete);
+        }
+    }
+
+    /// <summary>
+    /// グリッドレイアウトのスクロールビューを実装するための抽象基底クラス.
+    /// 無限スクロールおよびスナップには対応していません.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <seealso cref="FancyGridView{TItemData, TContext}"/>
+    public abstract class FancyGridView<TItemData> : FancyGridView<TItemData, FancyGridViewContext> { }
+}
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@@ -0,0 +1,47 @@
+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using UnityEngine;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyGridView{TItemData, TContext}"/> のセルを実装するための抽象基底クラス.
+    /// <see cref="FancyCell{TItemData, TContext}.Context"/> が不要な場合は
+    /// 代わりに <see cref="FancyGridViewCell{TItemData}"/> を使用します.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="FancyCell{TItemData, TContext}.Context"/> の型.</typeparam>
+    public abstract class FancyGridViewCell<TItemData, TContext> : FancyScrollRectCell<TItemData, TContext>
+        where TContext : class, IFancyGridViewContext, new()
+    {
+        /// <inheritdoc/>
+        protected override void UpdatePosition(float normalizedPosition, float localPosition)
+        {
+            var cellSize = Context.GetCellSize();
+            var spacing = Context.GetStartAxisSpacing();
+            var groupCount = Context.GetGroupCount();
+
+            var indexInGroup = Index % groupCount;
+            var positionInGroup = (cellSize + spacing) * (indexInGroup - (groupCount - 1) * 0.5f);
+
+            transform.localPosition = Context.ScrollDirection == ScrollDirection.Horizontal
+                ? new Vector2(-localPosition, -positionInGroup)
+                : new Vector2(positionInGroup, localPosition);
+        }
+    }
+
+    /// <summary>
+    /// <see cref="FancyGridView{TItemData}"/> のセルを実装するための抽象基底クラス.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <seealso cref="FancyGridViewCell{TItemData, TContext}"/>
+    public abstract class FancyGridViewCell<TItemData> : FancyGridViewCell<TItemData, FancyGridViewContext>
+    {
+        /// <inheritdoc/>
+        public sealed override void SetContext(FancyGridViewContext context) => base.SetContext(context);
+    }
+}
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@@ -0,0 +1,24 @@
+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+using UnityEngine;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyGridView{TItemData, TContext}"/> のコンテキスト基底クラス.
+    /// </summary>
+    public class FancyGridViewContext : IFancyGridViewContext
+    {
+        ScrollDirection IFancyScrollRectContext.ScrollDirection { get; set; }
+        Func<(float ScrollSize, float ReuseMargin)> IFancyScrollRectContext.CalculateScrollSize { get; set; }
+        GameObject IFancyCellGroupContext.CellTemplate { get; set; }
+        Func<int> IFancyCellGroupContext.GetGroupCount { get; set; }
+        Func<float> IFancyGridViewContext.GetStartAxisSpacing { get; set; }
+        Func<float> IFancyGridViewContext.GetCellSize { get; set; }
+    }
+}
@@ -0,0 +1,11 @@
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+using UnityEngine;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyCellGroup{TItemData, TContext}"/> のコンテキストインターフェース.
+    /// </summary>
+    public interface IFancyCellGroupContext
+    {
+        GameObject CellTemplate { get; set; }
+        Func<int> GetGroupCount { get; set; }
+    }
+}
@@ -0,0 +1,11 @@
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyGridView{TItemData, TContext}"/> のコンテキストインターフェース.
+    /// </summary>
+    public interface IFancyGridViewContext : IFancyScrollRectContext, IFancyCellGroupContext
+    {
+        Func<float> GetStartAxisSpacing { get; set; }
+        Func<float> GetCellSize { get; set ; }
+    }
+}
@@ -0,0 +1,11 @@
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+folderAsset: yes
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using EasingCore;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// ScrollRect スタイルのスクロールビューを実装するための抽象基底クラス.
+    /// 無限スクロールおよびスナップには対応していません.
+    /// <see cref="FancyScrollView{TItemData, TContext}.Context"/> が不要な場合は
+    /// 代わりに <see cref="FancyScrollRect{TItemData}"/> を使用します.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="FancyScrollView{TItemData, TContext}.Context"/> の型.</typeparam>
+    [RequireComponent(typeof(Scroller))]
+    public abstract class FancyScrollRect<TItemData, TContext> : FancyScrollView<TItemData, TContext>
+        where TContext : class, IFancyScrollRectContext, new()
+    {
+        /// <summary>
+        /// スクロール中にセルが再利用されるまでの余白のセル数.
+        /// </summary>
+        /// <remarks>
+        /// <c>0</c> を指定するとセルが完全に隠れた直後に再利用されます.
+        /// <c>1</c> 以上を指定すると, そのセル数だけ余分にスクロールしてから再利用されます.
+        /// </remarks>
+        [SerializeField] protected float reuseCellMarginCount = 0f;
+
+        /// <summary>
+        /// コンテンツ先頭の余白.
+        /// </summary>
+        [SerializeField] protected float paddingHead = 0f;
+
+        /// <summary>
+        /// コンテンツ末尾の余白.
+        /// </summary>
+        [SerializeField] protected float paddingTail = 0f;
+
+        /// <summary>
+        /// スクロール軸方向のセル同士の余白.
+        /// </summary>
+        [SerializeField] protected float spacing = 0f;
+
+        /// <summary>
+        /// セルのサイズ.
+        /// </summary>
+        protected abstract float CellSize { get; }
+
+        /// <summary>
+        /// スクロール可能かどうか.
+        /// </summary>
+        /// <remarks>
+        /// アイテム数が十分少なくビューポート内に全てのセルが収まっている場合は <c>false</c>, それ以外は <c>true</c> になります.
+        /// </remarks>
+        protected virtual bool Scrollable => MaxScrollPosition > 0f;
+
+        Scroller cachedScroller;
+
+        /// <summary>
+        /// スクロール位置を制御する <see cref="FancyScrollView.Scroller"/> のインスタンス.
+        /// </summary>
+        /// <remarks>
+        /// <see cref="Scroller"/> のスクロール位置を変更する際は必ず <see cref="ToScrollerPosition(float)"/> を使用して変換した位置を使用してください.
+        /// </remarks>
+        protected Scroller Scroller => cachedScroller ?? (cachedScroller = GetComponent<Scroller>());
+
+        float ScrollLength => 1f / Mathf.Max(cellInterval, 1e-2f) - 1f;
+
+        float ViewportLength => ScrollLength - reuseCellMarginCount * 2f;
+
+        float PaddingHeadLength => (paddingHead - spacing * 0.5f) / (CellSize + spacing);
+
+        float MaxScrollPosition => ItemsSource.Count
+            - ScrollLength
+            + reuseCellMarginCount * 2f
+            + (paddingHead + paddingTail - spacing) / (CellSize + spacing);
+
+        /// <inheritdoc/>
+        protected override void Initialize()
+        {
+            base.Initialize();
+
+            Context.ScrollDirection = Scroller.ScrollDirection;
+            Context.CalculateScrollSize = () =>
+            {
+                var interval = CellSize + spacing;
+                var reuseMargin = interval * reuseCellMarginCount;
+                var scrollSize = Scroller.ViewportSize + interval + reuseMargin * 2f;
+                return (scrollSize, reuseMargin);
+            };
+
+            AdjustCellIntervalAndScrollOffset();
+            Scroller.OnValueChanged(OnScrollerValueChanged);
+        }
+
+        /// <summary>
+        /// <see cref="Scroller"/> のスクロール位置が変更された際の処理.
+        /// </summary>
+        /// <param name="p"><see cref="Scroller"/> のスクロール位置.</param>
+        void OnScrollerValueChanged(float p)
+        {
+            base.UpdatePosition(ToFancyScrollViewPosition(Scrollable ? p : 0f));
+
+            if (Scroller.Scrollbar)
+            {
+                if (p > ItemsSource.Count - 1)
+                {
+                    ShrinkScrollbar(p - (ItemsSource.Count - 1));
+                }
+                else if (p < 0f)
+                {
+                    ShrinkScrollbar(-p);
+                }
+            }
+        }
+
+        /// <summary>
+        /// スクロール範囲を超えてスクロールされた量に基づいて, スクロールバーのサイズを縮小します.
+        /// </summary>
+        /// <param name="offset">スクロール範囲を超えてスクロールされた量.</param>
+        void ShrinkScrollbar(float offset)
+        {
+            var scale = 1f - ToFancyScrollViewPosition(offset) / (ViewportLength - PaddingHeadLength);
+            UpdateScrollbarSize((ViewportLength - PaddingHeadLength) * scale);
+        }
+
+        /// <inheritdoc/>
+        protected override void Refresh()
+        {
+            AdjustCellIntervalAndScrollOffset();
+            RefreshScroller();
+            base.Refresh();
+        }
+
+        /// <inheritdoc/>
+        protected override void Relayout()
+        {
+            AdjustCellIntervalAndScrollOffset();
+            RefreshScroller();
+            base.Relayout();
+        }
+
+        /// <summary>
+        /// <see cref="Scroller"/> の各種状態を更新します.
+        /// </summary>
+        protected void RefreshScroller()
+        {
+            Scroller.Draggable = Scrollable;
+            Scroller.ScrollSensitivity = ToScrollerPosition(ViewportLength - PaddingHeadLength);
+            Scroller.Position = ToScrollerPosition(currentPosition);
+
+            if (Scroller.Scrollbar)
+            {
+                Scroller.Scrollbar.gameObject.SetActive(Scrollable);
+                UpdateScrollbarSize(ViewportLength);
+            }
+        }
+
+        /// <inheritdoc/>
+        protected override void UpdateContents(IList<TItemData> items)
+        {
+            AdjustCellIntervalAndScrollOffset();
+            base.UpdateContents(items);
+
+            Scroller.SetTotalCount(items.Count);
+            RefreshScroller();
+        }
+
+        /// <summary>
+        /// スクロール位置を更新します.
+        /// </summary>
+        /// <param name="position">スクロール位置.</param>
+        protected new void UpdatePosition(float position)
+        {
+            Scroller.Position = ToScrollerPosition(position, 0.5f);
+        }
+
+        /// <summary>
+        /// 指定したアイテムの位置までジャンプします.
+        /// </summary>
+        /// <param name="itemIndex">アイテムのインデックス.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        protected virtual void JumpTo(int itemIndex, float alignment = 0.5f)
+        {
+            Scroller.Position = ToScrollerPosition(itemIndex, alignment);
+        }
+
+        /// <summary>
+        /// 指定したアイテムの位置まで移動します.
+        /// </summary>
+        /// <param name="index">アイテムのインデックス.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        protected virtual void ScrollTo(int index, float duration, float alignment = 0.5f, Action onComplete = null)
+        {
+            Scroller.ScrollTo(ToScrollerPosition(index, alignment), duration, onComplete);
+        }
+
+        /// <summary>
+        /// 指定したアイテムの位置まで移動します.
+        /// </summary>
+        /// <param name="index">アイテムのインデックス.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="easing">移動に使用するイージング.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        protected virtual void ScrollTo(int index, float duration, Ease easing, float alignment = 0.5f, Action onComplete = null)
+        {
+            Scroller.ScrollTo(ToScrollerPosition(index, alignment), duration, easing, onComplete);
+        }
+
+        /// <summary>
+        /// ビューポートとコンテンツの長さに基づいてスクロールバーのサイズを更新します.
+        /// </summary>
+        /// <param name="viewportLength">ビューポートのサイズ.</param>
+        protected void UpdateScrollbarSize(float viewportLength)
+        {
+            var contentLength = Mathf.Max(ItemsSource.Count + (paddingHead + paddingTail - spacing) / (CellSize + spacing), 1);
+            Scroller.Scrollbar.size = Scrollable ? Mathf.Clamp01(viewportLength / contentLength) : 1f;
+        }
+
+        /// <summary>
+        /// <see cref="Scroller"/> が扱うスクロール位置を <see cref="FancyScrollRect{TItemData, TContext}"/> が扱うスクロール位置に変換します.
+        /// </summary>
+        /// <param name="position"><see cref="Scroller"/> が扱うスクロール位置.</param>
+        /// <returns><see cref="FancyScrollRect{TItemData, TContext}"/> が扱うスクロール位置.</returns>
+        protected float ToFancyScrollViewPosition(float position)
+        {
+            return position / Mathf.Max(ItemsSource.Count - 1, 1) * MaxScrollPosition - PaddingHeadLength;
+        }
+
+        /// <summary>
+        /// <see cref="FancyScrollRect{TItemData, TContext}"/> が扱うスクロール位置を <see cref="Scroller"/> が扱うスクロール位置に変換します.
+        /// </summary>
+        /// <param name="position"><see cref="FancyScrollRect{TItemData, TContext}"/> が扱うスクロール位置.</param>
+        /// <returns><see cref="Scroller"/> が扱うスクロール位置.</returns>
+        protected float ToScrollerPosition(float position)
+        {
+            return (position + PaddingHeadLength) / MaxScrollPosition * Mathf.Max(ItemsSource.Count - 1, 1);
+        }
+
+        /// <summary>
+        /// <see cref="FancyScrollRect{TItemData, TContext}"/> が扱うスクロール位置を <see cref="Scroller"/> が扱うスクロール位置に変換します.
+        /// </summary>
+        /// <param name="position"><see cref="FancyScrollRect{TItemData, TContext}"/> が扱うスクロール位置.</param>
+        /// <param name="alignment">ビューポート内におけるセル位置の基準. 0f(先頭) ~ 1f(末尾).</param>
+        /// <returns><see cref="Scroller"/> が扱うスクロール位置.</returns>
+        protected float ToScrollerPosition(float position, float alignment = 0.5f)
+        {
+            var offset = alignment * (ScrollLength - (1f + reuseCellMarginCount * 2f))
+                + (1f - alignment - 0.5f) * spacing / (CellSize + spacing);
+            return ToScrollerPosition(Mathf.Clamp(position - offset, 0f, MaxScrollPosition));
+        }
+
+        /// <summary>
+        /// 指定された設定を実現するための
+        /// <see cref="FancyScrollView{TItemData,TContext}.cellInterval"/> と
+        /// <see cref="FancyScrollView{TItemData,TContext}.scrollOffset"/> を計算して適用します.
+        /// </summary>
+        protected void AdjustCellIntervalAndScrollOffset()
+        {
+            var totalSize = Scroller.ViewportSize + (CellSize + spacing) * (1f + reuseCellMarginCount * 2f);
+            cellInterval = (CellSize + spacing) / totalSize;
+            scrollOffset = cellInterval * (1f + reuseCellMarginCount);
+        }
+
+        protected virtual void OnValidate()
+        {
+            AdjustCellIntervalAndScrollOffset();
+
+            if (loop)
+            {
+                loop = false;
+                Debug.LogError("Loop is currently not supported in FancyScrollRect.");
+            }
+
+            if (Scroller.SnapEnabled)
+            {
+                Scroller.SnapEnabled = false;
+                Debug.LogError("Snap is currently not supported in FancyScrollRect.");
+            }
+
+            if (Scroller.MovementType == MovementType.Unrestricted)
+            {
+                Scroller.MovementType = MovementType.Elastic;
+                Debug.LogError("MovementType.Unrestricted is currently not supported in FancyScrollRect.");
+            }
+        }
+    }
+
+    /// <summary>
+    /// ScrollRect スタイルのスクロールビューを実装するための抽象基底クラス.
+    /// 無限スクロールおよびスナップには対応していません.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <seealso cref="FancyScrollRect{TItemData, TContext}"/>
+    public abstract class FancyScrollRect<TItemData> : FancyScrollRect<TItemData, FancyScrollRectContext> { }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using UnityEngine;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyScrollRect{TItemData, TContext}"/> のセルを実装するための抽象基底クラス.
+    /// <see cref="FancyCell{TItemData, TContext}.Context"/> が不要な場合は
+    /// 代わりに <see cref="FancyScrollRectCell{TItemData}"/> を使用します.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <typeparam name="TContext"><see cref="FancyCell{TItemData, TContext}.Context"/> の型.</typeparam>
+    public abstract class FancyScrollRectCell<TItemData, TContext> : FancyCell<TItemData, TContext>
+        where TContext : class, IFancyScrollRectContext, new()
+    {
+        /// <inheritdoc/>
+        public override void UpdatePosition(float position)
+        {
+            var (scrollSize, reuseMargin) = Context.CalculateScrollSize();
+
+            var normalizedPosition = (Mathf.Lerp(0f, scrollSize, position) - reuseMargin) / (scrollSize - reuseMargin * 2f);
+
+            var start = 0.5f * scrollSize;
+            var end = -start;
+
+            UpdatePosition(normalizedPosition, Mathf.Lerp(start, end, position));
+        }
+
+        /// <summary>
+        /// このセルの位置を更新します.
+        /// </summary>
+        /// <param name="normalizedPosition">
+        /// ビューポートの範囲で正規化されたスクロール位置.
+        /// <see cref="FancyScrollRect{TItemData, TContext}.reuseCellMarginCount"/> の値に基づいて
+        ///  <c>0.0</c> ~ <c>1.0</c> の範囲を超えた値が渡されることがあります.
+        /// </param>
+        /// <param name="localPosition">ローカル位置.</param>
+        protected virtual void UpdatePosition(float normalizedPosition, float localPosition)
+        {
+            transform.localPosition = Context.ScrollDirection == ScrollDirection.Horizontal
+                ? new Vector2(-localPosition, 0)
+                : new Vector2(0, localPosition);
+        }
+    }
+
+    /// <summary>
+    /// <see cref="FancyScrollRect{TItemData}"/> のセルを実装するための抽象基底クラス.
+    /// </summary>
+    /// <typeparam name="TItemData">アイテムのデータ型.</typeparam>
+    /// <seealso cref="FancyScrollRectCell{TItemData, TContext}"/>
+    public abstract class FancyScrollRectCell<TItemData> : FancyScrollRectCell<TItemData, FancyScrollRectContext>
+    {
+        /// <inheritdoc/>
+        public sealed override void SetContext(FancyScrollRectContext context) => base.SetContext(context);
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyScrollRect{TItemData, TContext}"/> のコンテキスト基底クラス.
+    /// </summary>
+    public class FancyScrollRectContext : IFancyScrollRectContext
+    {
+        ScrollDirection IFancyScrollRectContext.ScrollDirection { get; set; }
+        Func<(float ScrollSize, float ReuseMargin)> IFancyScrollRectContext.CalculateScrollSize { get; set; }
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// <see cref="FancyScrollRect{TItemData, TContext}"/> のコンテキストインターフェース.
+    /// </summary>
+    public interface IFancyScrollRectContext
+    {
+        ScrollDirection ScrollDirection { get; set; }
+        Func<(float ScrollSize, float ReuseMargin)> CalculateScrollSize { get; set; }
+    }
+}
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+/*
+ * EasingCore (https://github.com/setchi/EasingCore)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/EasingCore/blob/master/LICENSE)
+ */
+
+using UnityEngine;
+
+namespace EasingCore
+{
+    public enum Ease
+    {
+        Linear,
+        InBack,
+        InBounce,
+        InCirc,
+        InCubic,
+        InElastic,
+        InExpo,
+        InQuad,
+        InQuart,
+        InQuint,
+        InSine,
+        OutBack,
+        OutBounce,
+        OutCirc,
+        OutCubic,
+        OutElastic,
+        OutExpo,
+        OutQuad,
+        OutQuart,
+        OutQuint,
+        OutSine,
+        InOutBack,
+        InOutBounce,
+        InOutCirc,
+        InOutCubic,
+        InOutElastic,
+        InOutExpo,
+        InOutQuad,
+        InOutQuart,
+        InOutQuint,
+        InOutSine,
+    }
+
+    public delegate float EasingFunction(float t);
+
+    public static class Easing
+    {
+        /// <summary>
+        /// Gets the easing function
+        /// </summary>
+        /// <param name="type">Ease type</param>
+        /// <returns>Easing function</returns>
+        public static EasingFunction Get(Ease type)
+        {
+            switch (type)
+            {
+                case Ease.Linear: return linear;
+                case Ease.InBack: return inBack;
+                case Ease.InBounce: return inBounce;
+                case Ease.InCirc: return inCirc;
+                case Ease.InCubic: return inCubic;
+                case Ease.InElastic: return inElastic;
+                case Ease.InExpo: return inExpo;
+                case Ease.InQuad: return inQuad;
+                case Ease.InQuart: return inQuart;
+                case Ease.InQuint: return inQuint;
+                case Ease.InSine: return inSine;
+                case Ease.OutBack: return outBack;
+                case Ease.OutBounce: return outBounce;
+                case Ease.OutCirc: return outCirc;
+                case Ease.OutCubic: return outCubic;
+                case Ease.OutElastic: return outElastic;
+                case Ease.OutExpo: return outExpo;
+                case Ease.OutQuad: return outQuad;
+                case Ease.OutQuart: return outQuart;
+                case Ease.OutQuint: return outQuint;
+                case Ease.OutSine: return outSine;
+                case Ease.InOutBack: return inOutBack;
+                case Ease.InOutBounce: return inOutBounce;
+                case Ease.InOutCirc: return inOutCirc;
+                case Ease.InOutCubic: return inOutCubic;
+                case Ease.InOutElastic: return inOutElastic;
+                case Ease.InOutExpo: return inOutExpo;
+                case Ease.InOutQuad: return inOutQuad;
+                case Ease.InOutQuart: return inOutQuart;
+                case Ease.InOutQuint: return inOutQuint;
+                case Ease.InOutSine: return inOutSine;
+                default: return linear;
+            }
+
+            float linear(float t) => t;
+
+            float inBack(float t) => t * t * t - t * Mathf.Sin(t * Mathf.PI);
+
+            float outBack(float t) => 1f - inBack(1f - t);
+
+            float inOutBack(float t) =>
+                t < 0.5f
+                    ? 0.5f * inBack(2f * t)
+                    : 0.5f * outBack(2f * t - 1f) + 0.5f;
+
+            float inBounce(float t) => 1f - outBounce(1f - t);
+
+            float outBounce(float t) =>
+                t < 4f / 11.0f ?
+                    (121f * t * t) / 16.0f :
+                t < 8f / 11.0f ?
+                    (363f / 40.0f * t * t) - (99f / 10.0f * t) + 17f / 5.0f :
+                t < 9f / 10.0f ?
+                    (4356f / 361.0f * t * t) - (35442f / 1805.0f * t) + 16061f / 1805.0f :
+                    (54f / 5.0f * t * t) - (513f / 25.0f * t) + 268f / 25.0f;
+
+            float inOutBounce(float t) =>
+                t < 0.5f
+                    ? 0.5f * inBounce(2f * t)
+                    : 0.5f * outBounce(2f * t - 1f) + 0.5f;
+
+            float inCirc(float t) => 1f - Mathf.Sqrt(1f - (t * t));
+
+            float outCirc(float t) => Mathf.Sqrt((2f - t) * t);
+
+            float inOutCirc(float t) =>
+                t < 0.5f
+                    ? 0.5f * (1 - Mathf.Sqrt(1f - 4f * (t * t)))
+                    : 0.5f * (Mathf.Sqrt(-((2f * t) - 3f) * ((2f * t) - 1f)) + 1f);
+
+            float inCubic(float t) => t * t * t;
+
+            float outCubic(float t) => inCubic(t - 1f) + 1f;
+
+            float inOutCubic(float t) =>
+                t < 0.5f
+                    ? 4f * t * t * t
+                    : 0.5f * inCubic(2f * t - 2f) + 1f;
+
+            float inElastic(float t) => Mathf.Sin(13f * (Mathf.PI * 0.5f) * t) * Mathf.Pow(2f, 10f * (t - 1f));
+
+            float outElastic(float t) => Mathf.Sin(-13f * (Mathf.PI * 0.5f) * (t + 1)) * Mathf.Pow(2f, -10f * t) + 1f;
+
+            float inOutElastic(float t) =>
+                t < 0.5f
+                    ? 0.5f * Mathf.Sin(13f * (Mathf.PI * 0.5f) * (2f * t)) * Mathf.Pow(2f, 10f * ((2f * t) - 1f))
+                    : 0.5f * (Mathf.Sin(-13f * (Mathf.PI * 0.5f) * ((2f * t - 1f) + 1f)) * Mathf.Pow(2f, -10f * (2f * t - 1f)) + 2f);
+
+            float inExpo(float t) => Mathf.Approximately(0.0f, t) ? t : Mathf.Pow(2f, 10f * (t - 1f));
+
+            float outExpo(float t) => Mathf.Approximately(1.0f, t) ? t : 1f - Mathf.Pow(2f, -10f * t);
+
+            float inOutExpo(float v) =>
+                Mathf.Approximately(0.0f, v) || Mathf.Approximately(1.0f, v)
+                    ? v
+                    : v < 0.5f
+                        ?  0.5f * Mathf.Pow(2f, (20f * v) - 10f)
+                        : -0.5f * Mathf.Pow(2f, (-20f * v) + 10f) + 1f;
+
+            float inQuad(float t) => t * t;
+
+            float outQuad(float t) => -t * (t - 2f);
+
+            float inOutQuad(float t) =>
+                t < 0.5f
+                    ?  2f * t * t
+                    : -2f * t * t + 4f * t - 1f;
+
+            float inQuart(float t) => t * t * t * t;
+
+            float outQuart(float t)
+            {
+                var u = t - 1f;
+                return u * u * u * (1f - t) + 1f;
+            }
+
+            float inOutQuart(float t) =>
+                t < 0.5f
+                    ? 8f * inQuart(t)
+                    : -8f * inQuart(t - 1f) + 1f;
+
+            float inQuint(float t) => t * t * t * t * t;
+
+            float outQuint(float t) => inQuint(t - 1f) + 1f;
+
+            float inOutQuint(float t) =>
+                t < 0.5f
+                    ? 16f * inQuint(t)
+                    : 0.5f * inQuint(2f * t - 2f) + 1f;
+
+            float inSine(float t) => Mathf.Sin((t - 1f) * (Mathf.PI * 0.5f)) + 1f;
+
+            float outSine(float t) => Mathf.Sin(t * (Mathf.PI * 0.5f));
+
+            float inOutSine(float t) => 0.5f * (1f - Mathf.Cos(t * Mathf.PI));
+        }
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+namespace FancyScrollView
+{
+    public enum MovementDirection
+    {
+        Left,
+        Right,
+        Up,
+        Down,
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using UnityEngine.UI;
+
+namespace FancyScrollView
+{
+    public enum MovementType
+    {
+        Unrestricted = ScrollRect.MovementType.Unrestricted,
+        Elastic = ScrollRect.MovementType.Elastic,
+        Clamped = ScrollRect.MovementType.Clamped
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+namespace FancyScrollView
+{
+    public enum ScrollDirection
+    {
+        Vertical,
+        Horizontal,
+    }
+}
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+/*
+ * FancyScrollView (https://github.com/setchi/FancyScrollView)
+ * Copyright (c) 2020 setchi
+ * Licensed under MIT (https://github.com/setchi/FancyScrollView/blob/master/LICENSE)
+ */
+
+using System;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.UI;
+using EasingCore;
+
+namespace FancyScrollView
+{
+    /// <summary>
+    /// スクロール位置の制御を行うコンポーネント.
+    /// </summary>
+    public class Scroller : UIBehaviour, IPointerUpHandler, IPointerDownHandler, IBeginDragHandler, IEndDragHandler, IDragHandler, IScrollHandler
+    {
+        [SerializeField] RectTransform viewport = default;
+
+        /// <summary>
+        /// ビューポートのサイズ.
+        /// </summary>
+        public float ViewportSize => scrollDirection == ScrollDirection.Horizontal
+            ? viewport.rect.size.x
+            : viewport.rect.size.y;
+
+        [SerializeField] ScrollDirection scrollDirection = ScrollDirection.Vertical;
+
+        /// <summary>
+        /// スクロール方向.
+        /// </summary>
+        public ScrollDirection ScrollDirection => scrollDirection;
+
+        [SerializeField] MovementType movementType = MovementType.Elastic;
+
+        /// <summary>
+        /// コンテンツがスクロール範囲を越えて移動するときに使用する挙動.
+        /// </summary>
+        public MovementType MovementType
+        {
+            get => movementType;
+            set => movementType = value;
+        }
+
+        [SerializeField] float elasticity = 0.1f;
+
+        /// <summary>
+        /// コンテンツがスクロール範囲を越えて移動するときに使用する弾力性の量.
+        /// </summary>
+        public float Elasticity
+        {
+            get => elasticity;
+            set => elasticity = value;
+        }
+
+        [SerializeField] float scrollSensitivity = 1f;
+
+        /// <summary>
+        /// <see cref="ViewportSize"/> の端から端まで Drag したときのスクロール位置の変化量.
+        /// </summary>
+        public float ScrollSensitivity
+        {
+            get => scrollSensitivity;
+            set => scrollSensitivity = value;
+        }
+
+        [SerializeField] bool inertia = true;
+
+        /// <summary>
+        /// 慣性を使用するかどうか. <c>true</c> を指定すると慣性が有効に, <c>false</c> を指定すると慣性が無効になります.
+        /// </summary>
+        public bool Inertia
+        {
+            get => inertia;
+            set => inertia = value;
+        }
+
+        [SerializeField] float decelerationRate = 0.03f;
+
+        /// <summary>
+        /// スクロールの減速率. <see cref="Inertia"/> が <c>true</c> の場合のみ有効です.
+        /// </summary>
+        public float DecelerationRate
+        {
+            get => decelerationRate;
+            set => decelerationRate = value;
+        }
+
+        [SerializeField] Snap snap = new Snap {
+            Enable = true,
+            VelocityThreshold = 0.5f,
+            Duration = 0.3f,
+            Easing = Ease.InOutCubic
+        };
+
+        /// <summary>
+        /// <c>true</c> ならスナップし, <c>false</c>ならスナップしません.
+        /// </summary>
+        /// <remarks>
+        /// スナップを有効にすると, 慣性でスクロールが止まる直前に最寄りのセルへ移動します.
+        /// </remarks>
+        public bool SnapEnabled
+        {
+            get => snap.Enable;
+            set => snap.Enable = value;
+        }
+
+        [SerializeField] bool draggable = true;
+
+        /// <summary>
+        /// Drag 入力を受付けるかどうか.
+        /// </summary>
+        public bool Draggable
+        {
+            get => draggable;
+            set => draggable = value;
+        }
+
+        [SerializeField] Scrollbar scrollbar = default;
+
+        /// <summary>
+        /// スクロールバーのオブジェクト.
+        /// </summary>
+        public Scrollbar Scrollbar => scrollbar;
+
+        /// <summary>
+        /// 現在のスクロール位置.
+        /// </summary>
+        /// <value></value>
+        public float Position
+        {
+            get => currentPosition;
+            set
+            {
+                autoScrollState.Reset();
+                velocity = 0f;
+                dragging = false;
+
+                UpdatePosition(value);
+            }
+        }
+
+        readonly AutoScrollState autoScrollState = new AutoScrollState();
+
+        Action<float> onValueChanged;
+        Action<int> onSelectionChanged;
+
+        Vector2 beginDragPointerPosition;
+        float scrollStartPosition;
+        float prevPosition;
+        float currentPosition;
+
+        int totalCount;
+
+        bool hold;
+        bool scrolling;
+        bool dragging;
+        float velocity;
+
+        [Serializable]
+        class Snap
+        {
+            public bool Enable;
+            public float VelocityThreshold;
+            public float Duration;
+            public Ease Easing;
+        }
+
+        static readonly EasingFunction DefaultEasingFunction = Easing.Get(Ease.OutCubic);
+
+        class AutoScrollState
+        {
+            public bool Enable;
+            public bool Elastic;
+            public float Duration;
+            public EasingFunction EasingFunction;
+            public float StartTime;
+            public float EndPosition;
+
+            public Action OnComplete;
+
+            public void Reset()
+            {
+                Enable = false;
+                Elastic = false;
+                Duration = 0f;
+                StartTime = 0f;
+                EasingFunction = DefaultEasingFunction;
+                EndPosition = 0f;
+                OnComplete = null;
+            }
+
+            public void Complete()
+            {
+                OnComplete?.Invoke();
+                Reset();
+            }
+        }
+
+        protected override void Start()
+        {
+            base.Start();
+
+            if (scrollbar)
+            {
+                scrollbar.onValueChanged.AddListener(x => UpdatePosition(x * (totalCount - 1f), false));
+            }
+        }
+
+        /// <summary>
+        /// スクロール位置が変化したときのコールバックを設定します.
+        /// </summary>
+        /// <param name="callback">スクロール位置が変化したときのコールバック.</param>
+        public void OnValueChanged(Action<float> callback) => onValueChanged = callback;
+
+        /// <summary>
+        /// 選択位置が変化したときのコールバックを設定します.
+        /// </summary>
+        /// <param name="callback">選択位置が変化したときのコールバック.</param>
+        public void OnSelectionChanged(Action<int> callback) => onSelectionChanged = callback;
+
+        /// <summary>
+        /// アイテムの総数を設定します.
+        /// </summary>
+        /// <remarks>
+        /// <paramref name="totalCount"/> を元に最大スクロール位置を計算します.
+        /// </remarks>
+        /// <param name="totalCount">アイテムの総数.</param>
+        public void SetTotalCount(int totalCount) => this.totalCount = totalCount;
+
+        /// <summary>
+        /// 指定した位置まで移動します.
+        /// </summary>
+        /// <param name="position">スクロール位置. <c>0f</c> ~ <c>totalCount - 1f</c> の範囲.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        public void ScrollTo(float position, float duration, Action onComplete = null) => ScrollTo(position, duration, Ease.OutCubic, onComplete);
+
+        /// <summary>
+        /// 指定した位置まで移動します.
+        /// </summary>
+        /// <param name="position">スクロール位置. <c>0f</c> ~ <c>totalCount - 1f</c> の範囲.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="easing">移動に使用するイージング.</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        public void ScrollTo(float position, float duration, Ease easing, Action onComplete = null) => ScrollTo(position, duration, Easing.Get(easing), onComplete);
+
+        /// <summary>
+        /// 指定した位置まで移動します.
+        /// </summary>
+        /// <param name="position">スクロール位置. <c>0f</c> ~ <c>totalCount - 1f</c> の範囲.</param>
+        /// <param name="duration">移動にかける秒数.</param>
+        /// <param name="easingFunction">移動に使用するイージング関数.</param>
+        /// <param name="onComplete">移動が完了した際に呼び出されるコールバック.</param>
+        public void ScrollTo(float position, float duration, EasingFunction easingFunction, Action onComplete = null)
+        {
+            if (duration <= 0f)
+            {
+                Position = CircularPosition(position, totalCount);
+                onComplete?.Invoke();
+                return;
+            }
+
+            autoScrollState.Reset();
+            autoScrollState.Enable = true;
+            autoScrollState.Duration = duration;
+            autoScrollState.EasingFunction = easingFunction ?? DefaultEasingFunction;
+            autoScrollState.StartTime = Time.unscaledTime;
+            autoScrollState.EndPosition = currentPosition + CalculateMovementAmount(currentPosition, position);
+            autoScrollState.OnComplete = onComplete;
+
+            velocity = 0f;
+            scrollStartPosition = currentPosition;
+
+            UpdateSelection(Mathf.RoundToInt(CircularPosition(autoScrollState.EndPosition, totalCount)));
+        }
+
+        /// <summary>
+        /// 指定したインデックスの位置までジャンプします.
+        /// </summary>
+        /// <param name="index">アイテムのインデックス.</param>
+        public void JumpTo(int index)
+        {
+            if (index < 0 || index > totalCount - 1)
+            {
+                throw new ArgumentOutOfRangeException(nameof(index));
+            }
+
+            UpdateSelection(index);
+            Position = index;
+        }
+
+        /// <summary>
+        /// <paramref name="sourceIndex"/> から <paramref name="destIndex"/> に移動する際の移動方向を返します.
+        /// スクロール範囲が無制限に設定されている場合は, 最短距離の移動方向を返します.
+        /// </summary>
+        /// <param name="sourceIndex">移動元のインデックス.</param>
+        /// <param name="destIndex">移動先のインデックス.</param>
+        /// <returns></returns>
+        public MovementDirection GetMovementDirection(int sourceIndex, int destIndex)
+        {
+            var movementAmount = CalculateMovementAmount(sourceIndex, destIndex);
+            return scrollDirection == ScrollDirection.Horizontal
+                ? movementAmount > 0
+                    ? MovementDirection.Left
+                    : MovementDirection.Right
+                : movementAmount > 0
+                    ? MovementDirection.Up
+                    : MovementDirection.Down;
+        }
+
+        /// <inheritdoc/>
+        void IPointerDownHandler.OnPointerDown(PointerEventData eventData)
+        {
+            if (!draggable || eventData.button != PointerEventData.InputButton.Left)
+            {
+                return;
+            }
+
+            hold = true;
+            velocity = 0f;
+            autoScrollState.Reset();
+        }
+
+        /// <inheritdoc/>
+        void IPointerUpHandler.OnPointerUp(PointerEventData eventData)
+        {
+            if (!draggable || eventData.button != PointerEventData.InputButton.Left)
+            {
+                return;
+            }
+
+            if (hold && snap.Enable)
+            {
+                UpdateSelection(Mathf.Clamp(Mathf.RoundToInt(currentPosition), 0, totalCount - 1));
+                ScrollTo(Mathf.RoundToInt(currentPosition), snap.Duration, snap.Easing);
+            }
+
+            hold = false;
+        }
+
+        /// <inheritdoc/>
+        void IScrollHandler.OnScroll(PointerEventData eventData)
+        {
+            if (!draggable)
+            {
+                return;
+            }
+
+            var delta = eventData.scrollDelta;
+
+            // Down is positive for scroll events, while in UI system up is positive.
+            delta.y *= -1;
+            var scrollDelta = scrollDirection == ScrollDirection.Horizontal
+                ? Mathf.Abs(delta.y) > Mathf.Abs(delta.x)
+                        ? delta.y
+                        : delta.x
+                : Mathf.Abs(delta.x) > Mathf.Abs(delta.y)
+                        ? delta.x
+                        : delta.y;
+
+            if (eventData.IsScrolling())
+            {
+                scrolling = true;
+            }
+
+            var position = currentPosition + scrollDelta / ViewportSize * scrollSensitivity;
+            if (movementType == MovementType.Clamped)
+            {
+                position += CalculateOffset(position);
+            }
+
+            if (autoScrollState.Enable)
+            {
+                autoScrollState.Reset();
+            }
+
+            UpdatePosition(position);
+        }
+
+        /// <inheritdoc/>
+        void IBeginDragHandler.OnBeginDrag(PointerEventData eventData)
+        {
+            if (!draggable || eventData.button != PointerEventData.InputButton.Left)
+            {
+                return;
+            }
+
+            hold = false;
+            RectTransformUtility.ScreenPointToLocalPointInRectangle(
+                viewport,
+                eventData.position,
+                eventData.pressEventCamera,
+                out beginDragPointerPosition);
+
+            scrollStartPosition = currentPosition;
+            dragging = true;
+            autoScrollState.Reset();
+        }
+
+        /// <inheritdoc/>
+        void IDragHandler.OnDrag(PointerEventData eventData)
+        {
+            if (!draggable || eventData.button != PointerEventData.InputButton.Left || !dragging)
+            {
+                return;
+            }
+
+            if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(
+                viewport,
+                eventData.position,
+                eventData.pressEventCamera,
+                out var dragPointerPosition))
+            {
+                return;
+            }
+
+            var pointerDelta = dragPointerPosition - beginDragPointerPosition;
+            var position = (scrollDirection == ScrollDirection.Horizontal ? -pointerDelta.x : pointerDelta.y)
+                           / ViewportSize
+                           * scrollSensitivity
+                           + scrollStartPosition;
+
+            var offset = CalculateOffset(position);
+            position += offset;
+
+            if (movementType == MovementType.Elastic)
+            {
+                if (offset != 0f)
+                {
+                    position -= RubberDelta(offset, scrollSensitivity);
+                }
+            }
+
+            UpdatePosition(position);
+        }
+
+        /// <inheritdoc/>
+        void IEndDragHandler.OnEndDrag(PointerEventData eventData)
+        {
+            if (!draggable || eventData.button != PointerEventData.InputButton.Left)
+            {
+                return;
+            }
+
+            dragging = false;
+        }
+
+        float CalculateOffset(float position)
+        {
+            if (movementType == MovementType.Unrestricted)
+            {
+                return 0f;
+            }
+
+            if (position < 0f)
+            {
+                return -position;
+            }
+
+            if (position > totalCount - 1)
+            {
+                return totalCount - 1 - position;
+            }
+
+            return 0f;
+        }
+
+        void UpdatePosition(float position, bool updateScrollbar = true)
+        {
+            onValueChanged?.Invoke(currentPosition = position);
+
+            if (scrollbar && updateScrollbar)
+            {
+                scrollbar.value = Mathf.Clamp01(position / Mathf.Max(totalCount - 1f, 1e-4f));
+            }
+        }
+
+        void UpdateSelection(int index) => onSelectionChanged?.Invoke(index);
+
+        float RubberDelta(float overStretching, float viewSize) =>
+            (1 - 1 / (Mathf.Abs(overStretching) * 0.55f / viewSize + 1)) * viewSize * Mathf.Sign(overStretching);
+
+        void Update()
+        {
+            var deltaTime = Time.unscaledDeltaTime;
+            var offset = CalculateOffset(currentPosition);
+
+            if (autoScrollState.Enable)
+            {
+                var position = 0f;
+
+                if (autoScrollState.Elastic)
+                {
+                    position = Mathf.SmoothDamp(currentPosition, currentPosition + offset, ref velocity,
+                        elasticity, Mathf.Infinity, deltaTime);
+
+                    if (Mathf.Abs(velocity) < 0.01f)
+                    {
+                        position = Mathf.Clamp(Mathf.RoundToInt(position), 0, totalCount - 1);
+                        velocity = 0f;
+                        autoScrollState.Complete();
+                    }
+                }
+                else
+                {
+                    var alpha = Mathf.Clamp01((Time.unscaledTime - autoScrollState.StartTime) /
+                                               Mathf.Max(autoScrollState.Duration, float.Epsilon));
+                    position = Mathf.LerpUnclamped(scrollStartPosition, autoScrollState.EndPosition,
+                        autoScrollState.EasingFunction(alpha));
+
+                    if (Mathf.Approximately(alpha, 1f))
+                    {
+                        autoScrollState.Complete();
+                    }
+                }
+
+                UpdatePosition(position);
+            }
+            else if (!(dragging || scrolling) && (!Mathf.Approximately(offset, 0f) || !Mathf.Approximately(velocity, 0f)))
+            {
+                var position = currentPosition;
+
+                if (movementType == MovementType.Elastic && !Mathf.Approximately(offset, 0f))
+                {
+                    autoScrollState.Reset();
+                    autoScrollState.Enable = true;
+                    autoScrollState.Elastic = true;
+
+                    UpdateSelection(Mathf.Clamp(Mathf.RoundToInt(position), 0, totalCount - 1));
+                }
+                else if (inertia)
+                {
+                    velocity *= Mathf.Pow(decelerationRate, deltaTime);
+
+                    if (Mathf.Abs(velocity) < 0.001f)
+                    {
+                        velocity = 0f;
+                    }
+
+                    position += velocity * deltaTime;
+
+                    if (snap.Enable && Mathf.Abs(velocity) < snap.VelocityThreshold)
+                    {
+                        ScrollTo(Mathf.RoundToInt(currentPosition), snap.Duration, snap.Easing);
+                    }
+                }
+                else
+                {
+                    velocity = 0f;
+                }
+
+                if (!Mathf.Approximately(velocity, 0f))
+                {
+                    if (movementType == MovementType.Clamped)
+                    {
+                        offset = CalculateOffset(position);
+                        position += offset;
+
+                        if (Mathf.Approximately(position, 0f) || Mathf.Approximately(position, totalCount - 1f))
+                        {
+                            velocity = 0f;
+                            UpdateSelection(Mathf.RoundToInt(position));
+                        }
+                    }
+
+                    UpdatePosition(position);
+                }
+            }
+
+            if (!autoScrollState.Enable && (dragging || scrolling) && inertia)
+            {
+                var newVelocity = (currentPosition - prevPosition) / deltaTime;
+                velocity = Mathf.Lerp(velocity, newVelocity, deltaTime * 10f);
+            }
+
+            prevPosition = currentPosition;
+            scrolling = false;
+        }
+
+        float CalculateMovementAmount(float sourcePosition, float destPosition)
+        {
+            if (movementType != MovementType.Unrestricted)
+            {
+                return Mathf.Clamp(destPosition, 0, totalCount - 1) - sourcePosition;
+            }
+
+            var amount = CircularPosition(destPosition, totalCount) - CircularPosition(sourcePosition, totalCount);
+
+            if (Mathf.Abs(amount) > totalCount * 0.5f)
+            {
+                amount = Mathf.Sign(-amount) * (totalCount - Mathf.Abs(amount));
+            }
+
+            return amount;
+        }
+
+        float CircularPosition(float p, int size) => size < 1 ? 0 : p < 0 ? size - 1 + (p + 1) % size : p % size;
+    }
+}
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+guid: 9f0e995f494626a4f878eedbded37c8d
+timeCreated: 1487408581
+licenseType: Free
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+{
+  "name": "jp.setchi.fancyscrollview",
+  "displayName": "FancyScrollView",
+  "description": "A scrollview component that can implement highly flexible animation.",
+  "version": "1.9.0",
+  "unity": "2019.4",
+  "license": "MIT",
+  "author": "setchi",
+  "dependencies": {},
+  "samples": [
+    {
+      "displayName": "Demo",
+      "path": "Samples~"
+    }
+  ]
+}
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