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- using System;
- using System.Collections.Generic;
- using System.ComponentModel;
- using System.Data;
- using System.Drawing;
- using System.Drawing.Imaging;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using System.Windows.Forms;
- using System.Text.RegularExpressions;
- using System.IO;
- using System.Text;
- // This is the code for your desktop app.
- // Press Ctrl+F5 (or go to Debug > Start Without Debugging) to run your app.
- namespace SketchAssistant
- {
- public partial class Form1 : Form
- {
- public Form1()
- {
- InitializeComponent();
- fileImporter = new FileImporter(this);
- }
- /**********************************/
- /*** CLASS VARIABLES START HERE ***/
- /**********************************/
- //important: add new variables only at the end of the list to keep the order of definition consistent with the order in which they are returned by GetAllVariables()
- /// <summary>
- /// Different Program States
- /// </summary>
- public enum ProgramState
- {
- Idle,
- Draw,
- Delete
- }
- /// <summary>
- /// Current Program State
- /// </summary>
- private ProgramState currentState;
- /// <summary>
- /// instance of FileImporter to handle drawing imports
- /// </summary>
- private FileImporter fileImporter;
- /// <summary>
- /// Dialog to select a file.
- /// </summary>
- OpenFileDialog openFileDialog = new OpenFileDialog();
- /// <summary>
- /// Image loaded on the left
- /// </summary>
- private Image leftImage = null;
- /// <summary>
- /// the graphic shown in the left window, represented as a list of polylines
- /// </summary>
- private List<Line> leftLineList;
- /// <summary>
- /// Image on the right
- /// </summary>
- Image rightImage = null;
- /// <summary>
- /// Current Line being Drawn
- /// </summary>
- List<Point> currentLine;
- /// <summary>
- /// All Lines in the current session
- /// </summary>
- List<Tuple<bool,Line>> rightLineList = new List<Tuple<bool, Line>>();
- /// <summary>
- /// Whether the Mouse is currently pressed in the rightPictureBox
- /// </summary>
- bool mousePressed = false;
- /// <summary>
- /// The Position of the Cursor in the right picture box
- /// </summary>
- Point currentCursorPosition;
- /// <summary>
- /// The Previous Cursor Position in the right picture box
- /// </summary>
- Point previousCursorPosition;
- /// <summary>
- /// Queue for the cursorPositions
- /// </summary>
- Queue<Point> cursorPositions = new Queue<Point>();
- /// <summary>
- /// The graphic representation of the right image
- /// </summary>
- Graphics rightGraph = null;
- /// <summary>
- /// Deletion Matrixes for checking postions of lines in the image
- /// </summary>
- bool[,] isFilledMatrix;
- HashSet<int>[,] linesMatrix;
- /// <summary>
- /// Size of deletion area
- /// </summary>
- uint deletionSize = 2;
- /// <summary>
- /// History of Actions
- /// </summary>
- ActionHistory historyOfActions;
- /// <summary>
- ///Dialog to save a file
- /// </summary>
- SaveFileDialog saveFileDialogRight = new SaveFileDialog();
- /******************************************/
- /*** FORM SPECIFIC FUNCTIONS START HERE ***/
- /******************************************/
- private void Form1_Load(object sender, EventArgs e)
- {
- currentState = ProgramState.Idle;
- this.DoubleBuffered = true;
- historyOfActions = new ActionHistory(null);
- UpdateButtonStatus();
- }
- //Resize Function connected to the form resize event, will refresh the form when it is resized
- private void Form1_Resize(object sender, System.EventArgs e)
- {
- this.Refresh();
- }
-
- //Load button, will open an OpenFileDialog
- private void loadToolStripMenuItem_Click(object sender, EventArgs e)
- {
- openFileDialog.Filter = "Image|*.jpg;*.png;*.jpeg";
- if(openFileDialog.ShowDialog() == DialogResult.OK)
- {
- toolStripLoadStatus.Text = openFileDialog.SafeFileName;
- leftImage = Image.FromFile(openFileDialog.FileName);
- pictureBoxLeft.Image = leftImage;
- //Refresh the left image box when the content is changed
- this.Refresh();
- }
- UpdateButtonStatus();
- }
- /// <summary>
- /// Import button, will open an OpenFileDialog
- /// </summary>
- private void examplePictureToolStripMenuItem_Click(object sender, EventArgs e)
- {
- openFileDialog.Filter = "Interactive Sketch-Assistant Drawing|*.isad";
- if (openFileDialog.ShowDialog() == DialogResult.OK)
- {
- toolStripLoadStatus.Text = openFileDialog.SafeFileName;
- try
- {
- (int, int, List<Line>) values = fileImporter.ParseISADInputFile(openFileDialog.FileName);
- DrawEmptyCanvasLeft(values.Item1, values.Item2);
- BindAndDrawLeftImage(values.Item3);
- this.Refresh();
- }
- catch(FileImporterException ex)
- {
- ShowInfoMessage(ex.ToString());
- }
- }
- }
- //Changes the state of the program to drawing
- private void drawButton_Click(object sender, EventArgs e)
- {
- if(rightImage != null)
- {
- if (currentState.Equals(ProgramState.Draw))
- {
- ChangeState(ProgramState.Idle);
- }
- else
- {
- ChangeState(ProgramState.Draw);
- }
- }
- UpdateButtonStatus();
- }
- //Changes the state of the program to deletion
- private void deleteButton_Click(object sender, EventArgs e)
- {
- if (rightImage != null)
- {
- if (currentState.Equals(ProgramState.Delete))
- {
- ChangeState(ProgramState.Idle);
- }
- else
- {
- ChangeState(ProgramState.Delete);
- }
- }
- UpdateButtonStatus();
- }
- //Undo an action
- private void undoButton_Click(object sender, EventArgs e)
- {
- if (historyOfActions.CanUndo())
- {
- HashSet<int> affectedLines = historyOfActions.GetCurrentAction().GetLineIDs();
- SketchAction.ActionType undoAction = historyOfActions.GetCurrentAction().GetActionType();
- switch (undoAction)
- {
- case SketchAction.ActionType.Delete:
- //Deleted Lines need to be shown
- ChangeLines(affectedLines, true);
- break;
- case SketchAction.ActionType.Draw:
- //Drawn lines need to be hidden
- ChangeLines(affectedLines, false);
- break;
- default:
- break;
- }
- }
- historyOfActions.MoveAction(true);
- UpdateButtonStatus();
- }
- //Redo an action
- private void redoButton_Click(object sender, EventArgs e)
- {
- if (historyOfActions.CanRedo())
- {
- historyOfActions.MoveAction(false);
- HashSet<int> affectedLines = historyOfActions.GetCurrentAction().GetLineIDs();
- SketchAction.ActionType redoAction = historyOfActions.GetCurrentAction().GetActionType();
- switch (redoAction)
- {
- case SketchAction.ActionType.Delete:
- //Deleted Lines need to be redeleted
- ChangeLines(affectedLines, false);
- break;
- case SketchAction.ActionType.Draw:
- //Drawn lines need to be redrawn
- ChangeLines(affectedLines, true);
- break;
- default:
- break;
- }
- }
- UpdateButtonStatus();
- }
- //Detect Keyboard Shortcuts
- private void Form1_KeyDown(object sender, KeyEventArgs e)
- {
- if (e.Modifiers == Keys.Control && e.KeyCode == Keys.Z)
- {
- undoButton_Click(sender, e);
- }
- if (e.Modifiers == Keys.Control && e.KeyCode == Keys.Y)
- {
- redoButton_Click(sender, e);
- }
- }
- //get current Mouse positon within the right picture box
- private void pictureBoxRight_MouseMove(object sender, MouseEventArgs e)
- {
- currentCursorPosition = ConvertCoordinates(new Point(e.X, e.Y));
- }
- //hold left mouse button to draw.
- private void pictureBoxRight_MouseDown(object sender, MouseEventArgs e)
- {
- mousePressed = true;
- if (currentState.Equals(ProgramState.Draw))
- {
- currentLine = new List<Point>();
- }
- }
- //Lift left mouse button to stop drawing and add a new Line.
- private void pictureBoxRight_MouseUp(object sender, MouseEventArgs e)
- {
- mousePressed = false;
- if (currentState.Equals(ProgramState.Draw) && currentLine.Count > 0)
- {
- Line newLine = new Line(currentLine, rightLineList.Count);
- rightLineList.Add(new Tuple<bool, Line>(true, newLine));
- newLine.PopulateMatrixes(isFilledMatrix, linesMatrix);
- historyOfActions.AddNewAction(new SketchAction(SketchAction.ActionType.Draw, newLine.GetID()));
- }
- UpdateButtonStatus();
- }
- //Button to create a new Canvas. Will create an empty image
- //which is the size of the left image, if there is one.
- //If there is no image loaded the canvas will be the size of the right picture box
- private void canvasButton_Click(object sender, EventArgs e)
- {
- if (!historyOfActions.IsEmpty())
- {
- if (MessageBox.Show("You have unsaved changes, creating a new canvas will discard these.",
- "Attention", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
- {
- historyOfActions = new ActionHistory(lastActionTakenLabel);
- DrawEmptyCanvasRight();
- //The following lines cannot be in DrawEmptyCanvas()
- isFilledMatrix = new bool[rightImage.Width, rightImage.Height];
- linesMatrix = new HashSet<int>[rightImage.Width, rightImage.Height];
- rightLineList = new List<Tuple<bool, Line>>();
- }
- }
- else
- {
- historyOfActions = new ActionHistory(lastActionTakenLabel);
- DrawEmptyCanvasRight();
- //The following lines cannot be in DrawEmptyCanvas()
- isFilledMatrix = new bool[rightImage.Width, rightImage.Height];
- linesMatrix = new HashSet<int>[rightImage.Width, rightImage.Height];
- rightLineList = new List<Tuple<bool, Line>>();
- }
- UpdateButtonStatus();
- }
- //add a Point on every tick to the Drawpath
- private void mouseTimer_Tick(object sender, EventArgs e)
- {
- cursorPositions.Enqueue(currentCursorPosition);
- previousCursorPosition = cursorPositions.Dequeue();
- if (currentState.Equals(ProgramState.Draw) && mousePressed)
- {
- currentLine.Add(currentCursorPosition);
- Line drawline = new Line(currentLine);
- drawline.DrawLine(rightGraph);
- pictureBoxRight.Image = rightImage;
- }
- if (currentState.Equals(ProgramState.Delete) && mousePressed)
- {
- List<Point> uncheckedPoints = Line.BresenhamLineAlgorithm(previousCursorPosition, currentCursorPosition);
- foreach (Point currPoint in uncheckedPoints)
- {
- HashSet<int> linesToDelete = CheckDeletionMatrixesAroundPoint(currPoint, deletionSize);
- if (linesToDelete.Count > 0)
- {
- historyOfActions.AddNewAction(new SketchAction(SketchAction.ActionType.Delete, linesToDelete));
- foreach (int lineID in linesToDelete)
- {
- rightLineList[lineID] = new Tuple<bool, Line>(false, rightLineList[lineID].Item2);
- }
- RepopulateDeletionMatrixes();
- RedrawRightImage();
- }
- }
- }
- }
- //Save button, will open an SaveFileDialog
- private void saveToolStripMenuItem_Click_1(object sender, EventArgs e)
- {
- if (saveFileDialogRight.ShowDialog() == DialogResult.OK)
- {
- StreamWriter sw = new StreamWriter(File.OpenWrite(saveFileDialogRight.FileName));
- sw.Write("hello");
- sw.Close();
- }
-
- //if (rightImage != null)
- //{
- // saveFileDialogRight.Filter = "Image|*.jpg;*.png;*.jpeg|" + "Vector Graphics|*.txt|" + "All files (*.*)|*.*";
- // ImageFormat format = ImageFormat.Jpeg;
- // if (saveFileDialogRight.ShowDialog() == DialogResult.OK)
- // {
- // switch (saveFileDialogRight.Filter)
- // {
- // case ".txt":
-
- // /*String newReturnString = createSvgTxt();
- // File.WriteAllText(saveFileDialogRight.FileName, newReturnString);
- // return;
- // */
- // /*sw.WriteLine(String.Format("<svg viewBox = \"0 0 {0} {1}\" xmlns = \"http://www.w3.org/2000/svg\">", rightImage.Width, rightImage.Height));
- // foreach (Tuple<bool, Line> lineTuple in rightLineList)
- // {
- // if (lineTuple.Item1 == true)
- // {
- // sw.WriteLine("\n" + "<line x1 = \"{0}\" y1 = \"{1}\" x2 = \"{2}\" y2 = \"{3}\" stroke = \"black\">",
- // lineTuple.Item2.GetStartPoint().X, lineTuple.Item2.GetStartPoint().Y, lineTuple.Item2.GetEndPoint().X, lineTuple.Item2.GetEndPoint().X);
- // //sw.WriteLine("1");
- // }
- // }*/
- // /*using (FileStream fs = File.Create(saveFileDialogRight.FileName))
- // {
- // fs.Write(Encoding.UTF8.GetBytes(String.Format("<svg viewBox = \"0 0 {0} {1}\" xmlns = \"http://www.w3.org/2000/svg\">", rightImage.Width, rightImage.Height)),0,int.MaxValue);
- // foreach (Tuple<bool, Line> lineTuple in rightLineList)
- // {
- // if (lineTuple.Item1 == true)
- // {
- // fs.Write(Encoding.UTF8.GetBytes(String.Format("\n" + "<line x1 = \"{0}\" y1 = \"{1}\" x2 = \"{2}\" y2 = \"{3}\" stroke = \"black\">",
- // lineTuple.Item2.GetStartPoint().X, lineTuple.Item2.GetStartPoint().Y, lineTuple.Item2.GetEndPoint().X, lineTuple.Item2.GetEndPoint().X)),0,int.MaxValue);
- // }
- // }
- // }
- // return;
- // */
- // case ".png":
- // format = ImageFormat.Png;
- // pictureBoxRight.Image.Save(saveFileDialogRight.FileName, format);
- // break;
- // case ".bmp":
- // format = ImageFormat.Bmp;
- // pictureBoxRight.Image.Save(saveFileDialogRight.FileName, format);
- // break;
- // default:
- // pictureBoxRight.Image.Save(saveFileDialogRight.FileName, format);
- // break;
- // }
- // }
- //}
- //else
- //{
- // MessageBox.Show("The right picture box can't be empty");
- //}
- }
- /***********************************/
- /*** HELPER FUNCTIONS START HERE ***/
- /***********************************/
- /// <summary>
- /// Creates an empty Canvas
- /// </summary>
- private void DrawEmptyCanvasRight()
- {
- if (leftImage == null)
- {
- rightImage = new Bitmap(pictureBoxRight.Width, pictureBoxRight.Height);
- rightGraph = Graphics.FromImage(rightImage);
- rightGraph.FillRectangle(Brushes.White, 0, 0, pictureBoxRight.Width + 10, pictureBoxRight.Height + 10);
- pictureBoxRight.Image = rightImage;
- }
- else
- {
- rightImage = new Bitmap(leftImage.Width, leftImage.Height);
- rightGraph = Graphics.FromImage(rightImage);
- rightGraph.FillRectangle(Brushes.White, 0, 0, leftImage.Width + 10, leftImage.Height + 10);
- pictureBoxRight.Image = rightImage;
- }
- this.Refresh();
- pictureBoxRight.Refresh();
- }
- /// <summary>
- /// Creates an empty Canvas on the left
- /// </summary>
- /// <param name="width"> width of the new canvas in pixels </param>
- /// <param name="height"> height of the new canvas in pixels </param>
- private void DrawEmptyCanvasLeft(int width, int height)
- {
- if (width == 0)
- {
- leftImage = new Bitmap(pictureBoxLeft.Width, pictureBoxLeft.Height);
- }
- else
- {
- leftImage = new Bitmap(width, height);
- }
- Graphics.FromImage(leftImage).FillRectangle(Brushes.White, 0, 0, pictureBoxLeft.Width + 10, pictureBoxLeft.Height + 10);
- pictureBoxLeft.Image = leftImage;
-
- this.Refresh();
- pictureBoxLeft.Refresh();
- }
- /// <summary>
- /// Redraws all lines in lineList, for which their associated boolean value equals true.
- /// </summary>
- private void RedrawRightImage()
- {
- DrawEmptyCanvasRight();
- foreach (Tuple<bool, Line> lineBoolTuple in rightLineList)
- {
- if (lineBoolTuple.Item1)
- {
- lineBoolTuple.Item2.DrawLine(rightGraph);
- }
- }
- pictureBoxRight.Refresh();
- }
- /// <summary>
- /// Change the status of whether or not the lines are shown.
- /// </summary>
- /// <param name="lines">The HashSet containing the affected Line IDs.</param>
- /// <param name="shown">True if the lines should be shown, false if they should be hidden.</param>
- private void ChangeLines(HashSet<int> lines, bool shown)
- {
- foreach (int lineId in lines)
- {
- if (lineId <= rightLineList.Count - 1 && lineId >= 0)
- {
- rightLineList[lineId] = new Tuple<bool, Line>(shown, rightLineList[lineId].Item2);
- }
- }
- RedrawRightImage();
- }
- /// <summary>
- /// Updates the active status of buttons. Currently draw, delete, undo and redo button.
- /// </summary>
- private void UpdateButtonStatus()
- {
- undoButton.Enabled = historyOfActions.CanUndo();
- redoButton.Enabled = historyOfActions.CanRedo();
- drawButton.Enabled = (rightImage != null);
- deleteButton.Enabled = (rightImage != null);
- }
- /// <summary>
- /// A helper function which handles tasks associated witch changing states,
- /// such as checking and unchecking buttons and changing the state.
- /// </summary>
- /// <param name="newState">The new state of the program</param>
- private void ChangeState(ProgramState newState)
- {
- switch (currentState)
- {
- case ProgramState.Draw:
- drawButton.CheckState = CheckState.Unchecked;
- mouseTimer.Enabled = false;
- break;
- case ProgramState.Delete:
- deleteButton.CheckState = CheckState.Unchecked;
- mouseTimer.Enabled = false;
- break;
- default:
- break;
- }
- switch (newState)
- {
- case ProgramState.Draw:
- drawButton.CheckState = CheckState.Checked;
- mouseTimer.Enabled = true;
- break;
- case ProgramState.Delete:
- deleteButton.CheckState = CheckState.Checked;
- mouseTimer.Enabled = true;
- break;
- default:
- break;
- }
- currentState = newState;
- pictureBoxRight.Refresh();
- }
- /// <summary>
- /// A function that calculates the coordinates of a point on a zoomed in image.
- /// </summary>
- /// <param name="">The position of the mouse cursor</param>
- /// <returns>The real coordinates of the mouse cursor on the image</returns>
- private Point ConvertCoordinates(Point cursorPosition)
- {
- Point realCoordinates = new Point(5,3);
- if(pictureBoxRight.Image == null)
- {
- return cursorPosition;
- }
- int widthImage = pictureBoxRight.Image.Width;
- int heightImage = pictureBoxRight.Image.Height;
- int widthBox = pictureBoxRight.Width;
- int heightBox = pictureBoxRight.Height;
- float imageRatio = (float)widthImage / (float)heightImage;
- float containerRatio = (float)widthBox / (float)heightBox;
- if (imageRatio >= containerRatio)
- {
- //Image is wider than it is high
- float zoomFactor = (float)widthImage / (float)widthBox;
- float scaledHeight = heightImage / zoomFactor;
- float filler = (heightBox - scaledHeight) / 2;
- realCoordinates.X = (int)(cursorPosition.X * zoomFactor);
- realCoordinates.Y = (int)((cursorPosition.Y - filler) * zoomFactor);
- }
- else
- {
- //Image is higher than it is wide
- float zoomFactor = (float)heightImage / (float)heightBox;
- float scaledWidth = widthImage / zoomFactor;
- float filler = (widthBox - scaledWidth) / 2;
- realCoordinates.X = (int)((cursorPosition.X - filler) * zoomFactor);
- realCoordinates.Y = (int)(cursorPosition.Y * zoomFactor);
- }
- return realCoordinates;
- }
- /// <summary>
- /// A function that populates the matrixes needed for deletion detection with line data.
- /// </summary>
- private void RepopulateDeletionMatrixes()
- {
- if(rightImage != null)
- {
- isFilledMatrix = new bool[rightImage.Width,rightImage.Height];
- linesMatrix = new HashSet<int>[rightImage.Width, rightImage.Height];
- foreach(Tuple<bool,Line> lineTuple in rightLineList)
- {
- if (lineTuple.Item1)
- {
- lineTuple.Item2.PopulateMatrixes(isFilledMatrix, linesMatrix);
- }
- }
- }
- }
- /// <summary>
- /// A function that checks the deletion matrixes at a certain point
- /// and returns all Line ids at that point and in a square around it in a certain range.
- /// </summary>
- /// <param name="p">The point around which to check.</param>
- /// <param name="range">The range around the point. If range is 0, only the point is checked.</param>
- /// <returns>A List of all lines.</returns>
- private HashSet<int> CheckDeletionMatrixesAroundPoint(Point p, uint range)
- {
- HashSet<int> returnSet = new HashSet<int>();
- if (p.X >= 0 && p.Y >= 0 && p.X < rightImage.Width && p.Y < rightImage.Height)
- {
- if (isFilledMatrix[p.X, p.Y])
- {
- returnSet.UnionWith(linesMatrix[p.X, p.Y]);
- }
- }
- for (int x_mod = (int)range*(-1); x_mod < range; x_mod++)
- {
- for (int y_mod = (int)range * (-1); y_mod < range; y_mod++)
- {
- if (p.X + x_mod >= 0 && p.Y + y_mod >= 0 && p.X + x_mod < rightImage.Width && p.Y + y_mod < rightImage.Height)
- {
- if (isFilledMatrix[p.X + x_mod, p.Y + y_mod])
- {
- returnSet.UnionWith(linesMatrix[p.X + x_mod, p.Y + y_mod]);
- }
- }
- }
- }
- return returnSet;
- }
- /// <summary>
- /// binds the given picture to templatePicture and draws it
- /// </summary>
- /// <param name="newTemplatePicture"> the new template picture, represented as a list of polylines </param>
- /// <returns></returns>
- private void BindAndDrawLeftImage(List<Line> newTemplatePicture)
- {
- leftLineList = newTemplatePicture;
- foreach(Line l in leftLineList)
- {
- l.DrawLine(Graphics.FromImage(leftImage));
- }
- }
- /// <summary>
- /// shows the given info message in a popup and asks the user to aknowledge it
- /// </summary>
- /// <param name="message">the message to show</param>
- private void ShowInfoMessage(String message)
- {
- MessageBox.Show(message);
- }
- /// <summary>
- /// returns all instance variables in the order of their definition for testing
- /// </summary>
- /// <returns>all instance variables in the order of their definition</returns>
- public Object[]/*(ProgramState, FileImporter, OpenFileDialog, Image, List<Line>, Image, List<Point>, List<Tuple<bool, Line>>, bool, Point, Point, Queue<Point>, Graphics, bool[,], HashSet<int>[,], uint, ActionHistory)*/ GetAllVariables()
- {
- return new Object[] { currentState, fileImporter, openFileDialog, leftImage, leftLineList, rightImage, currentLine, rightLineList, mousePressed, currentCursorPosition, previousCursorPosition, cursorPositions, rightGraph, isFilledMatrix, linesMatrix, deletionSize, historyOfActions };
- }
- /// <summary>
- /// public method wrapper for testing purposes, invoking DrawEmptyCanvas(...) and BindAndDrawLeftImage(...)
- /// </summary>
- /// <param name="width">width of the parsed image</param>
- /// <param name="height">height of the parsed image</param>
- /// <param name="newImage">the parsed image</param>
- public void CreateCanvasAndSetPictureForTesting(int width, int height, List<Line> newImage)
- {
- DrawEmptyCanvasLeft(width, height);
- BindAndDrawLeftImage(newImage);
- }
- private String createSvgTxt()
- {
- String newString = String.Format("<svg viewBox = \"0 0 {0} {1}\" xmlns = \"http://www.w3.org/2000/svg\">", rightImage.Width, rightImage.Height);
- foreach (Tuple<bool, Line> lineTuple in rightLineList)
- {
- if (lineTuple.Item1 == true)
- {
- String nextLine = String.Format("\n" + "<line x1 = \"{0}\" y1 = \"{1}\" x2 = \"{2}\" y2 = \"{3}\" stroke = \"black\">",
- lineTuple.Item2.GetStartPoint().X, lineTuple.Item2.GetStartPoint().Y, lineTuple.Item2.GetEndPoint().X, lineTuple.Item2.GetEndPoint().X);
- newString += nextLine;
- }
- }
- return newString;
- }
- }
- }
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