From 5cd56135b5ecfdf22bf2486a26ce41f85cf9647f Mon Sep 17 00:00:00 2001
From: Debug_pro <debugprodevoff@gmail.com>
Date: Thu, 26 Feb 2026 12:12:38 +0300
Subject: [PATCH] add resize

---
 DrawFigureLibrary/Figure.cs                | 27 +++++++++++-
 DrawFigureLibrary/Figures/PolygonFigure.cs | 49 +++++++++++++++++++---
 Main/MainWindow.xaml                       | 25 +++++++++--
 Main/MainWindow.xaml.cs                    | 32 ++++++++++++++
 4 files changed, 122 insertions(+), 11 deletions(-)

diff --git a/DrawFigureLibrary/Figure.cs b/DrawFigureLibrary/Figure.cs
index b56f8f8..a9f7ded 100644
--- a/DrawFigureLibrary/Figure.cs
+++ b/DrawFigureLibrary/Figure.cs
@@ -42,7 +42,7 @@ namespace DrawFigureLibrary
         }
 
         public virtual bool HitTest(Point p) => p.X >= x && p.X <= x + w && p.Y >= y && p.Y <= y + h;
-        
+
         public virtual bool MoveByChecked(int dX, int dY)
         {
             if (Init.DrawingImage == null) return false;
@@ -51,5 +51,28 @@ namespace DrawFigureLibrary
             MoveBy(dX, dY);
             return true;
         }
+
+        public virtual void ResizeTo(int newW, int newH)
+        {
+            if (newW <= 0 || newH <= 0) throw new ArgumentException("Размеры должны быть > 0");
+            w = newW;
+            h = newH;
+        }
+
+        public virtual bool ResizeToChecked(int newW, int newH)
+        {
+            if (Init.DrawingImage == null) return false;
+            if (newW <= 0 || newH <= 0) return false;
+
+            long nr = (long)x + newW;
+            long nb = (long)y + newH;
+
+            if (x < 0 || y < 0) return false;
+            if (nr > (long)Init.DrawingImage.ActualWidth) return false;
+            if (nb > (long)Init.DrawingImage.ActualHeight) return false;
+
+            ResizeTo(newW, newH);
+            return true;
+        }
     }
-}
+}
\ No newline at end of file
diff --git a/DrawFigureLibrary/Figures/PolygonFigure.cs b/DrawFigureLibrary/Figures/PolygonFigure.cs
index 870e608..75061dd 100644
--- a/DrawFigureLibrary/Figures/PolygonFigure.cs
+++ b/DrawFigureLibrary/Figures/PolygonFigure.cs
@@ -1,4 +1,5 @@
-using System.Windows;
+using System;
+using System.Windows;
 using System.Windows.Media;
 
 namespace DrawFigureLibrary.Figures
@@ -9,13 +10,14 @@ namespace DrawFigureLibrary.Figures
 
         public PolygonFigure(string name, Point[] points) : base(name, 0, 0, 0, 0)
         {
-            if (points == null || points.Length < 3) throw new ArgumentException("Многоугольник должен иметь минимум 3 точки.");
+            if (points == null || points.Length < 3)
+                throw new ArgumentException("Многоугольник должен иметь минимум 3 точки.");
 
             Points = points;
             RecalcBounds();
         }
 
-        private void RecalcBounds()
+        protected void RecalcBounds()
         {
             double minX = Points.Min(p => p.X);
             double minY = Points.Min(p => p.Y);
@@ -45,10 +47,47 @@ namespace DrawFigureLibrary.Figures
 
             if (Check(this, deltaX, deltaY, Init.DrawingImage))
             {
-                for (int i = 0; i < Points.Length; i++) Points[i] = new Point( Points[i].X + deltaX, Points[i].Y + deltaY );
+                for (int i = 0; i < Points.Length; i++)
+                    Points[i] = new Point(Points[i].X + deltaX, Points[i].Y + deltaY);
 
                 RecalcBounds();
             }
         }
+
+        public override void ResizeTo(int newW, int newH)
+        {
+            if (newW <= 0 || newH <= 0) throw new ArgumentException("Размеры должны быть > 0");
+
+            double oldW = w;
+            double oldH = h;
+
+            if (oldW <= 0 || oldH <= 0)
+            {
+                RecalcBounds();
+                oldW = w;
+                oldH = h;
+
+                if (oldW <= 0 || oldH <= 0) throw new ArgumentException("Нельзя изменить размер: вырожденный многоугольник.");
+            }
+
+            double sx = newW / oldW;
+            double sy = newH / oldH;
+
+            double ox = x;
+            double oy = y;
+
+            for (int i = 0; i < Points.Length; i++)
+            {
+                double px = Points[i].X;
+                double py = Points[i].Y;
+
+                double nx = ox + (px - ox) * sx;
+                double ny = oy + (py - oy) * sy;
+
+                Points[i] = new Point(nx, ny);
+            }
+
+            RecalcBounds();
+        }
     }
-}
+}
\ No newline at end of file
diff --git a/Main/MainWindow.xaml b/Main/MainWindow.xaml
index b4fac30..f9398ba 100644
--- a/Main/MainWindow.xaml
+++ b/Main/MainWindow.xaml
@@ -355,11 +355,28 @@
 
                             <Separator Margin="0,10,0,10" />
 
-                            <TextBlock Text="Смещение dX" /> <TextBox x:Name="MoveDx" />
-                            <TextBlock Text="Смещение dY" /> <TextBox x:Name="MoveDy" />
+                            <TextBlock Text="Смещение dX" />
+                            <TextBox x:Name="MoveDx" />
+                            <TextBlock Text="Смещение dY" />
+                            <TextBox x:Name="MoveDy" />
 
-                            <Button Content="Переместить" Margin="0,10,0,0" Click="ClickMoveSelected"   />
-                            <Button Content="Удалить"     Margin="0,10,0,0" Click="ClickDeleteSelected" />
+                            <Button Content="Переместить" Margin="0,10,0,0" Click="ClickMoveSelected" />
+                            <Button Content="Удалить" Margin="0,10,0,0" Click="ClickDeleteSelected" />
+
+                            <Separator />
+
+                            <TextBlock Text="Новый размер (W/H)" />
+                            <TextBox x:Name="ResizeW" />
+                            <TextBox x:Name="ResizeH" />
+
+                            <TextBlock
+                                Text="Для квадрата/круга W должен равняться H. Для многоугольника меняется bounding box."
+                                Foreground="{StaticResource TextBrushHint}"
+                                TextWrapping="Wrap"
+                                Margin="0,6,0,0"
+                            />
+
+                            <Button Content="Изменить размер" Margin="0,10,0,0" Click="ClickResizeSelected" />
                         </StackPanel>
                     </TabItem>
                 </TabControl>
diff --git a/Main/MainWindow.xaml.cs b/Main/MainWindow.xaml.cs
index 2835851..7736be1 100644
--- a/Main/MainWindow.xaml.cs
+++ b/Main/MainWindow.xaml.cs
@@ -304,6 +304,38 @@ namespace Main
             }
         }
 
+        private void ClickResizeSelected(object sender, RoutedEventArgs e)
+        {
+            try
+            {
+                var fig = GetSelectedFigureOrThrow();
+
+                if (!TryReadInt(ResizeW.Text, "W", 1, CanvasW, out int newW)) return;
+                if (!TryReadInt(ResizeH.Text, "H", 1, CanvasH, out int newH)) return;
+
+                if (fig is SquareFigure || fig is CircleFigure)
+                {
+                    if (newW != newH)
+                    {
+                        MessageBox.Show("Для квадрата/круга W должен быть равен H.");
+                        return;
+                    }
+                }
+
+                if (!fig.ResizeToChecked(newW, newH))
+                {
+                    MessageBox.Show("Фигура не помещается в область рисования.");
+                    return;
+                }
+
+                Redraw();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message);
+            }
+        }
+
         public MainWindow()
         {
             InitializeComponent();