*WIP: Array&ListCollections

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionForm.Designer.cs

@@ -1,4 +1,7 @@
-namespace WinF_Lab2_Cruiser
+using System.Net.Http.Headers;
+using System.Xml.Linq;
+
+namespace WinF_Lab2_Cruiser
 {
     partial class CollectionForm
     {
@@ -29,6 +32,17 @@
         private void InitializeComponent()
         {
             ToolBox = new GroupBox();
+            StorageBox = new GroupBox();
+
+            // labelCollections = new Label();
+            TextBoxC = new TextBox();
+            ArrayRB = new RadioButton();
+            ListRB = new RadioButton();
+            ButtonAL = new Button();
+            Elements = new ListBox();
+            ButtonDelAL = new Button();
+            CreateCompany = new Button();
+
             Check = new Button();
             RandomGenerator = new Button();
             RemoveButton = new Button();
@@ -42,7 +56,8 @@
             SuspendLayout();
             // 
             // ToolBox
-            // 
+            //
+
             ToolBox.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
             ToolBox.Controls.Add(Check);
             ToolBox.Controls.Add(RandomGenerator);
@@ -50,41 +65,99 @@
             ToolBox.Controls.Add(maskedTextBox1);
             ToolBox.Controls.Add(Add2Button);
             ToolBox.Controls.Add(AddButton);
-            ToolBox.Controls.Add(comboBox1);
+            ToolBox.Controls.Add(comboBox1); 
-            ToolBox.Location = new Point(1042, 12);
+
+            ToolBox.Controls.Add(StorageBox);
+            ToolBox.Controls.Add(CreateCompany);
+
+            CreateCompany.Location = new Point(10, 540);
+            CreateCompany.Size = new Size(190, 80);
+            CreateCompany.Text = "Create company";
+            CreateCompany.Click += ButtonCreateCompany_Click;
+
+            ToolBox.Location = new Point(1030, 12);
             ToolBox.Name = "ToolBox";
-            ToolBox.Size = new Size(207, 701);
+            ToolBox.Size = new Size(220, 900);
             ToolBox.TabIndex = 0;
             ToolBox.TabStop = false;
             ToolBox.Text = "Tools";
+
+            StorageBox.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            StorageBox.Location = new Point(8, 180);
+            StorageBox.Size = new Size(204, 350);
+            StorageBox.TabIndex = 1;
+            StorageBox.Text = "Collections Name:";
+
+            StorageBox.Controls.Add(TextBoxC);
+            TextBoxC.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            TextBoxC.Location = new Point(7, 70);
+            TextBoxC.Size = new Size(180, 46);
+            TextBoxC.TabIndex = 10;
+
+            StorageBox.Controls.Add(ArrayRB);
+            ArrayRB.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            ArrayRB.Location = new Point(4, 118);
+            ArrayRB.Size = new Size(100, 40);
+            ArrayRB.TabIndex = 11;
+            ArrayRB.Text = "Array";
+
+            StorageBox.Controls.Add(ListRB);
+            ListRB.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            ListRB.Location = new Point(96, 118);
+            ListRB.Size = new Size(80, 40);
+            ListRB.TabIndex = 12;
+            ListRB.Text = "List";
+
+            StorageBox.Controls.Add(ButtonAL);
+            ButtonAL.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            ButtonAL.Location = new Point(6, 160);
+            ButtonAL.Size = new Size(180, 40);
+            ButtonAL.TabIndex = 13;
+            ButtonAL.Text = "Add collection";
+            ButtonAL.Click += ButtonCollectionAdd_Click;
+
+            StorageBox.Controls.Add(Elements);
+            Elements.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            Elements.Location = new Point(6, 200);
+            Elements.Size = new Size(180, 100);
+
+            StorageBox.Controls.Add(ButtonDelAL);
+            ButtonDelAL.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Right;
+            ButtonDelAL.Location = new Point(6, 300);
+            ButtonDelAL.Size = new Size(180, 40);
+            ButtonDelAL.TabIndex = 14;
+            ButtonDelAL.Text = "Remove";
+            ButtonDelAL.Click += ButtonCollectionDel_Click;
+
             // 
             // Check
             // 
             Check.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
-            Check.Location = new Point(34, 629);
+            Check.Location = new Point(34, 824);
             Check.Name = "Check";
             Check.Size = new Size(150, 46);
-            Check.TabIndex = 6;
+            Check.TabIndex = 2;
             Check.Text = "Check";
             Check.UseVisualStyleBackColor = true;
             Check.Click += Check_Click;
             // 
             // RandomGenerator
             // 
-            RandomGenerator.Anchor = AnchorStyles.Right;
+            RandomGenerator.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
-            RandomGenerator.Location = new Point(34, 391);
+            RandomGenerator.Location = new Point(34, 734);
             RandomGenerator.Name = "RandomGenerator";
-            RandomGenerator.Size = new Size(150, 140);
+            RandomGenerator.Size = new Size(150, 90);
-            RandomGenerator.TabIndex = 5;
+            RandomGenerator.TabIndex = 3;
             RandomGenerator.Text = "Generator Random";
             RandomGenerator.UseVisualStyleBackColor = true;
             RandomGenerator.Click += RandomGenerator_Click;
             // 
             // RemoveButton
-            // 
+            //
-            RemoveButton.Location = new Point(34, 275);
+            RemoveButton.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
+            RemoveButton.Location = new Point(34, 694);
             RemoveButton.Name = "RemoveButton";
-            RemoveButton.Size = new Size(150, 46);
+            RemoveButton.Size = new Size(150, 40);
             RemoveButton.TabIndex = 4;
             RemoveButton.Text = "Delete";
             RemoveButton.UseVisualStyleBackColor = true;
@@ -92,32 +165,34 @@
             // 
             // maskedTextBox1
             // 
-            maskedTextBox1.Anchor = AnchorStyles.Right;
+            maskedTextBox1.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
-            maskedTextBox1.Location = new Point(6, 214);
+            maskedTextBox1.Location = new Point(6, 648);
             maskedTextBox1.Mask = "00";
             maskedTextBox1.Name = "maskedTextBox1";
-            maskedTextBox1.Size = new Size(198, 39);
+            maskedTextBox1.Size = new Size(198, 35);
-            maskedTextBox1.TabIndex = 3;
+            maskedTextBox1.TabIndex = 5;
             maskedTextBox1.ValidatingType = typeof(int);
+
+
             // 
             // Add2Button
             // 
-            Add2Button.Anchor = AnchorStyles.Right;
+            Add2Button.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
-            Add2Button.Location = new Point(6, 146);
+            Add2Button.Location = new Point(6, 126);
             Add2Button.Name = "Add2Button";
-            Add2Button.Size = new Size(198, 46);
+            Add2Button.Size = new Size(198, 40);
-            Add2Button.TabIndex = 2;
+            Add2Button.TabIndex = 6;
             Add2Button.Text = "Advanced";
             Add2Button.UseVisualStyleBackColor = true;
             Add2Button.Click += Add2Button_Click;
             // 
             // AddButton
             // 
-            AddButton.Anchor = AnchorStyles.Right;
+            AddButton.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
-            AddButton.Location = new Point(6, 94);
+            AddButton.Location = new Point(6, 84);
             AddButton.Name = "AddButton";
-            AddButton.Size = new Size(198, 46);
+            AddButton.Size = new Size(198, 40);
-            AddButton.TabIndex = 1;
+            AddButton.TabIndex = 7;
             AddButton.Text = "Base";
             AddButton.UseVisualStyleBackColor = true;
             AddButton.Click += AddButton_Click;
@@ -128,10 +203,10 @@
             comboBox1.DropDownStyle = ComboBoxStyle.DropDownList;
             comboBox1.FormattingEnabled = true;
             comboBox1.Items.AddRange(new object[] { "Storage" });
-            comboBox1.Location = new Point(6, 38);
+            comboBox1.Location = new Point(6, 35);
             comboBox1.Name = "comboBox1";
             comboBox1.Size = new Size(198, 40);
-            comboBox1.TabIndex = 0;
+            comboBox1.TabIndex = 8;
             comboBox1.SelectedIndexChanged += comboBox_SelectedIndexChanged;
             // 
             // pictureBox1
@@ -140,15 +215,15 @@
             pictureBox1.Dock = DockStyle.Left;
             pictureBox1.Location = new Point(0, 0);
             pictureBox1.Name = "pictureBox1";
-            pictureBox1.Size = new Size(1036, 723);
+            pictureBox1.Size = new Size(1020, 860);
-            pictureBox1.TabIndex = 3;
+            pictureBox1.TabIndex = 9;
             pictureBox1.TabStop = false;
             // 
             // CollectionForm
             // 
             AutoScaleDimensions = new SizeF(13F, 32F);
             AutoScaleMode = AutoScaleMode.Font;
-            ClientSize = new Size(1259, 723);
+            ClientSize = new Size(1260, 920);
             Controls.Add(pictureBox1);
             Controls.Add(ToolBox);
             Name = "CollectionForm";
@@ -162,6 +237,16 @@
         #endregion
 
         private GroupBox ToolBox;
+        private GroupBox StorageBox;
+        // private Label labelCollections;
+        private TextBox TextBoxC;
+        private RadioButton ArrayRB;
+        private RadioButton ListRB;
+        private Button ButtonAL;
+        private ListBox Elements;
+        private Button ButtonDelAL;
+        private Button CreateCompany;
+
         private ComboBox comboBox1;
         private Button AddButton;
         private Button Add2Button;

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionForm.cs

@@ -16,20 +16,27 @@ namespace WinF_Lab2_Cruiser
 {
     public partial class CollectionForm : Form
     {
-        private AbstractCompany _Company;
+        private readonly StorageCollection<DrawingBase> _storageCollection;
+
+        private AbstractCompany? _Company = null;
         public CollectionForm()
         {
             InitializeComponent();
+            _storageCollection = new();
         }
 
         private void comboBox_SelectedIndexChanged(object sender, EventArgs e)
         {
+            ToolBox.Enabled = true;
+
+            /*
             switch (comboBox1.Text)
             {
                 case "Storage":
                     _Company = new NewClassCollection(pictureBox1.Width, pictureBox1.Height, new ArrayAlg<DrawingBase>());
                     break;
             }
+            */
         }
 
         private static Color GetColor(Random r)
@@ -50,7 +57,7 @@ namespace WinF_Lab2_Cruiser
                 return;
             }
 
-            Random rn = new Random();
+            Random rn = new();
             DrawingBase Transport;
             switch (type)
             {
@@ -67,7 +74,7 @@ namespace WinF_Lab2_Cruiser
                     return;
             }
 
-            if (_Company + Transport > 0)
+            if (_Company + Transport >= 0)
             {
                 MessageBox.Show("> Object was added");
                 pictureBox1.Image = _Company.Show();
@@ -93,7 +100,7 @@ namespace WinF_Lab2_Cruiser
             {
                 return;
             }
-            if (_Company - Convert.ToInt32(maskedTextBox1.Text) != null)
+            if ((_Company - Convert.ToInt32(maskedTextBox1.Text)) != null)
             {
                 MessageBox.Show("> Object was removed");
                 pictureBox1.Image = _Company.Show();
@@ -147,5 +154,83 @@ namespace WinF_Lab2_Cruiser
             }
             pictureBox1.Image = _Company.Show();
         }
+
+        private void ButtonCollectionAdd_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(TextBoxC.Text) || (!ListRB.Checked && !ArrayRB.Checked))
+            {
+                MessageBox.Show("Enter correct data or choose an option", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+
+            CollectionType collType = CollectionType.None;
+
+            if (ArrayRB.Checked)
+            {
+                collType = CollectionType.Array;
+            }
+            else if (ListRB.Checked)
+            {
+                collType = CollectionType.List;
+            }
+
+            _storageCollection.AddCollection(TextBoxC.Text, collType);
+            RefreshListBoxItems();
+        }
+
+        private void RefreshListBoxItems()
+        {
+            Elements.Items.Clear();
+            for (int i = 0; i < _storageCollection.Keys?.Count; ++i)
+            {
+                string? collName = _storageCollection.Keys?[i];
+                if (!string.IsNullOrEmpty(collName))
+                {
+                    Elements.Items.Add(collName);
+                }
+            }
+        }
+
+        private void ButtonCollectionDel_Click(object sender, EventArgs e)
+        {
+            if (Elements.SelectedItem == null || Elements.SelectedIndex < 0)
+            {
+                MessageBox.Show("Collection was not choosed");
+                return;
+            }
+            if (MessageBox.Show("Are you sure?", "Removing", MessageBoxButtons.OK, MessageBoxIcon.Question) != DialogResult.OK)
+            {
+                return;
+            }
+            _storageCollection.DelCollection(Elements.SelectedItem.ToString());
+            RefreshListBoxItems();
+        }
+
+        private void ButtonCreateCompany_Click(object sender, EventArgs e)
+        {
+            if (Elements.SelectedIndex < 0 || Elements.SelectedItem == null)
+            {
+                MessageBox.Show("Collection was not choosed");
+                return;
+            }
+
+            ICGO<DrawingBase>? collection = _storageCollection[Elements.SelectedItem.ToString() ?? string.Empty];
+            if (collection == null)
+            {
+                MessageBox.Show("Collection is not initialized");
+                return;
+            }
+
+            switch (comboBox1.Text)
+            {
+                case "Storage":
+                    _Company = new NewClassCollection(pictureBox1.Width, pictureBox1.Height, collection);
+                    break;
+            }
+
+            ToolBox.Enabled = true;
+            RefreshListBoxItems();
+        }
     }
 }
+

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionGenericObjects/AbstractCompany.cs

@@ -29,10 +29,10 @@ namespace WinF_Lab2_Cruiser.CollectionGenericObjects
         }
 
         // insted of bool:
-        public static int operator +(AbstractCompany cmp, 
+        public static int operator +(AbstractCompany cmp,
             DrawingBase trasport) => (cmp._Array.Insert(trasport));
 
-        public static DrawingBase operator -(AbstractCompany cmp, 
+        public static DrawingBase operator -(AbstractCompany cmp,
             int pos) => (cmp._Array.Remove(pos));
 
         public DrawingBase? GetRandomObj()

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionGenericObjects/ArrayAlg.cs

@@ -19,7 +19,20 @@ namespace WinF_Lab2_Cruiser.CollectionGenericObjects
 
         public int Count => _Array.Length;
 
-        public int SetMaxCount { set { if (value > 0) { _Array = new K?[value]; } } }
+        public int SetMaxCount { set { 
+                if (value > 0)
+                {
+                    if (_Array.Length > 0)
+                    {
+                        Array.Resize(ref _Array, value);
+                    }
+                    else
+                    {
+                        _Array = new K?[value];
+                    }
+                }
+            }
+        }
 
         public K? GetItem(int index)
         {
@@ -33,7 +46,7 @@ namespace WinF_Lab2_Cruiser.CollectionGenericObjects
         public int Insert(K item)
         {
             // any empty place
-            for (int i = 0; i < Count; i++)
+            for (int i = 0; i <= Count; i++)
             {
                 if (_Array[i] == null)
                 {
@@ -64,14 +77,12 @@ namespace WinF_Lab2_Cruiser.CollectionGenericObjects
                         min_index = i;
                     }
                 }
-
                 _Array[min_index] = item;
                 return min_index;
             }
-
             return -1;
         }
-        
+
         public K Remove(int index)
         {
             K item;
@@ -83,7 +94,7 @@ namespace WinF_Lab2_Cruiser.CollectionGenericObjects
             }
             return null;
         }
-        
+
         /*
         public bool Remove(int index)
         {

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionGenericObjects/CollectionType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WinF_Lab2_Cruiser.CollectionGenericObjects
+{
+    public enum CollectionType
+    {
+        None = 0,
+        Array = 1,
+        List = 2
+    }
+}

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionGenericObjects/ICGO.cs

@@ -6,9 +6,8 @@ using System.Threading.Tasks;
 
 namespace WinF_Lab2_Cruiser.CollectionGenericObjects
 {
-    public interface ICGO<K> // U>
+    public interface ICGO<K>
         where K : class // ссылочный тип
-        // where U : struct // 2nd dop task
     {
         int Count { get; }
         int SetMaxCount { set; }

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionGenericObjects/ListGenericObjects.cs

@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WinF_Lab2_Cruiser.CollectionGenericObjects
+{
+    public class ListGenericObjects<K> : ICGO<K> where K : class
+    {
+        private readonly List<K?> _collection;
+        private int _maxCount;
+        public int Count => _collection.Count;
+
+        public int SetMaxCount { set { if (value > 0) { _maxCount = value; } } }
+
+        public ListGenericObjects()
+        {
+            _collection = new();
+        }
+
+        public K? GetItem(int index)
+        {
+            if (index >= Count || index < 0)
+            {
+                return null;
+            }
+            return _collection[index];
+        }
+
+        public int Insert(K item)
+        {
+            if (item == null)  // unneccesary
+            {
+                return -1;  // [!] not 0,
+                            // 'cause 0 can be an index of item
+            }
+
+            _collection.Add(item);
+            return _collection.Count;
+        }
+
+        public int Insert(int index, K item)
+        {
+            if (index >= _maxCount || index < 0 || _collection[index] != null)
+            {
+                return -1;
+            }
+            
+            _collection.Insert(index, item);
+            return index;
+        }
+
+        public K? Remove(int index)
+        {
+            if (index >= Count || index < 0)  // on the other positions item doesn't exist
+            {
+                return null;
+            }
+           
+            K item = _collection[index];
+            _collection.RemoveAt(index);
+            return item;
+        }
+    }
+}
+

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/CollectionGenericObjects/StorageCollection.cs

@@ -0,0 +1,61 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using WinF_Lab2_Cruiser.Drawing_tools;
+
+namespace WinF_Lab2_Cruiser.CollectionGenericObjects
+{
+    public class StorageCollection<T> where T : class
+    {
+        private Dictionary<string, ICGO<T>> _storage;
+        public List<string> Keys => _storage.Keys.ToList();
+        public StorageCollection()
+        {
+            _storage = new Dictionary<string, ICGO<T>>();
+        }
+
+        public void AddCollection(string name, CollectionType CollType)
+        {
+            if (name == null || _storage.ContainsKey(name) || CollType == CollectionType.None)
+            {
+                return;
+            }
+
+            switch (CollType)
+            {
+                case CollectionType.Array : _storage.Add(name, new ArrayAlg<T>()); break;  // ------------------------------------------------ [ !!! ]
+                case CollectionType.List : _storage[name] = new ListGenericObjects<T>(); break;
+            }
+        }
+
+        public void DelCollection(string name)
+        {
+            if (_storage.ContainsKey(name)) _storage.Remove(name);
+            return;
+        }
+
+        public ICGO<T>? this[string name] // int i
+        {
+            get
+            {
+                /*
+                int k = 0;
+                foreach (string key in Keys)
+                {
+                    if (k >= i)
+                    {
+                        if (_storage.ContainsKey(Keys[k])) return _storage[name];
+                        return null;
+                    }
+                    k++;
+                }
+                */
+
+                if (_storage.ContainsKey(name)) return _storage[name];
+                return null;
+            }
+        }
+    }
+}

WinF_Lab2_Cruiser/WinF_Lab2_Cruiser/DrawingCanvas.Designer.cs

@@ -30,6 +30,8 @@ namespace WinF_Lab2_Cruiser
         private void InitializeComponent()
         {
             pictureBox1 = new PictureBox();
+            //CreateButton = new Button();
+            //CreateButton2 = new Button();
             buttonUp = new Button();
             buttonLeft = new Button();
             buttonDown = new Button();
@@ -50,6 +52,31 @@ namespace WinF_Lab2_Cruiser
             pictureBox1.TabIndex = 0;
             pictureBox1.TabStop = false;
             // 
+            // CreateButton
+            //
+            /*
+            CreateButton.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
+            CreateButton.Location = new Point(22, 465);
+            CreateButton.Margin = new Padding(6);
+            CreateButton.Name = "CreateButton";
+            CreateButton.Size = new Size(139, 113);
+            CreateButton.TabIndex = 1;
+            CreateButton.Text = "Create object";
+            CreateButton.UseVisualStyleBackColor = true;
+            CreateButton.Click += buttonCr_Click;
+            // 
+            // CreateButton2
+            // 
+            CreateButton2.Location = new Point(22, 26);
+            CreateButton2.Margin = new Padding(6);
+            CreateButton2.Name = "CreateButton2";
+            CreateButton2.Size = new Size(139, 113);
+            CreateButton2.TabIndex = 2;
+            CreateButton2.Text = "Cr Updated Object";
+            CreateButton2.UseVisualStyleBackColor = true;
+            CreateButton2.Click += buttonCr2_Click;
+            */
+            // 
             // buttonUp
             // 
             buttonUp.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
@@ -102,6 +129,9 @@ namespace WinF_Lab2_Cruiser
             buttonRight.UseVisualStyleBackColor = true;
             buttonRight.Click += ButtonMove_Click;
             // 
+            // ListComboBox
+            //
+            // 
             // ButtonActivate
             // 
             ButtonActivate.Anchor = AnchorStyles.Right;
@@ -113,18 +143,18 @@ namespace WinF_Lab2_Cruiser
             ButtonActivate.UseVisualStyleBackColor = true;
             ButtonActivate.Click += comboBox_Activate;
             // 
-            // comboBox
+            // comboBox1
             // 
             comboBox.FormattingEnabled = true;
             comboBox.Items.AddRange(new object[] { "Center", "Boarder" });
-            comboBox.Location = new Point(22, 27);
+            comboBox.Location = new Point(188, 26);
-            comboBox.Name = "comboBox";
+            comboBox.Name = "Directions";
             comboBox.Size = new Size(203, 40);
             comboBox.TabIndex = 9;
             // 
             // Activate
             // 
-            Activate.Location = new Point(22, 84);
+            Activate.Location = new Point(188, 93);
             Activate.Name = "Activate";
             Activate.Size = new Size(203, 46);
             Activate.TabIndex = 10;
@@ -145,6 +175,8 @@ namespace WinF_Lab2_Cruiser
             Controls.Add(buttonDown);
             Controls.Add(buttonLeft);
             Controls.Add(buttonUp);
+            //Controls.Add(CreateButton);
+            //Controls.Add(CreateButton2);
             Controls.Add(pictureBox1);
             Controls.Add(ButtonActivate);
             Margin = new Padding(4, 2, 4, 2);