I like it move it move it

2026-04-22 22:06:30 +00:00 · 2024-05-18 17:51:38 +03:00
parent de77c9236f
commit dd0ece36f2
33 changed files with 0 additions and 0 deletions
@@ -0,0 +1,129 @@
+using System.Globalization;
+using System.Windows;
+
+namespace Azaion.Annotator.DTO;
+
+public class AnnotationInfo
+{
+    public int ClassNumber { get; set; }
+    public double X { get; set; }
+    public double Y { get; set; }
+    public double Width { get; set; }
+    public double Height { get; set; }
+
+    public AnnotationInfo() { }
+    public AnnotationInfo(int classNumber, double x, double y, double width, double height)
+    {
+        ClassNumber = classNumber;
+        X = x;
+        Y = y;
+        Width = width;
+        Height = height;
+    }
+
+    public override string ToString() => string.Concat(ClassNumber.ToString(),
+        " ",
+        X.ToString("F5", CultureInfo.InvariantCulture),
+        " ",
+        Y.ToString("F5", CultureInfo.InvariantCulture),
+        " ",
+        Width.ToString("F5", CultureInfo.InvariantCulture),
+        " ",
+        Height.ToString("F5", CultureInfo.InvariantCulture));
+
+    public AnnotationInfo ToLabelCoordinates(Size canvasSize, Size videoSize)
+    {
+        var cw = canvasSize.Width;
+        var ch = canvasSize.Height;
+        var canvasAR = cw / ch;
+        var videoAR = videoSize.Width / videoSize.Height;
+
+        var annInfo = new AnnotationInfo { ClassNumber = this.ClassNumber };
+        double left, top;
+        if (videoAR > canvasAR) //100% width
+        {
+            left = X / cw;
+            annInfo.Width = Width / cw;
+            var realHeight = cw / videoAR; //real video height in pixels on canvas
+            var blackStripHeight = (ch - realHeight) / 2.0; //height of black strips at the top and bottom
+            top = (Y - blackStripHeight) / realHeight;
+            annInfo.Height = Height / realHeight;
+        }
+        else //100% height
+        {
+            top = Y / ch;
+            annInfo.Height = Height / ch;
+            var realWidth = ch * videoAR; //real video width in pixels on canvas
+            var blackStripWidth = (cw - realWidth) / 2.0; //height of black strips at the top and bottom
+            left = (X - blackStripWidth) / realWidth;
+            annInfo.Width = Width / realWidth;
+        }
+
+        annInfo.X = left + annInfo.Width / 2.0;
+        annInfo.Y = top + annInfo.Height / 2.0;
+        
+        return annInfo;
+    }
+
+    public AnnotationInfo ToCanvasCoordinates(Size canvasSize, Size videoSize)
+    {
+        var cw = canvasSize.Width;
+        var ch = canvasSize.Height;
+        var canvasAR = cw / ch;
+        var videoAR = videoSize.Width / videoSize.Height;
+        
+        var annInfo = new AnnotationInfo { ClassNumber = this.ClassNumber };
+        
+        double left = X - Width / 2;
+        double top = Y - Height / 2;
+        
+        if (videoAR > canvasAR) //100% width
+        {
+            var realHeight = cw / videoAR; //real video height in pixels on canvas
+            var blackStripHeight = (ch - realHeight) / 2.0; //height of black strips at the top and bottom
+            
+            annInfo.X = left * cw;
+            annInfo.Y = top * realHeight + blackStripHeight;
+            annInfo.Width = Width * cw;
+            annInfo.Height = Height * realHeight;
+        }
+        else //100% height
+        {
+            var realWidth = ch * videoAR; //real video width in pixels on canvas
+            var blackStripWidth = (cw - realWidth) / 2.0; //height of black strips at the top and bottom
+
+            annInfo.X = left * realWidth + blackStripWidth;
+            annInfo.Y = top * ch;
+            annInfo.Width = Width * realWidth;
+            annInfo.Height = Height * ch;
+        }
+        return annInfo;
+    }
+
+    public static AnnotationInfo? Parse(string? s)
+    {
+        if (s == null || string.IsNullOrEmpty(s))
+            return null;
+        
+        var strs = s.Replace(',','.').Split(' ');
+        if (strs.Length != 5)
+            return null;
+
+        try
+        {
+            var res = new AnnotationInfo
+            {
+                ClassNumber = int.Parse(strs[0], CultureInfo.InvariantCulture),
+                X = double.Parse(strs[1], CultureInfo.InvariantCulture),
+                Y = double.Parse(strs[2], CultureInfo.InvariantCulture),
+                Width = double.Parse(strs[3], CultureInfo.InvariantCulture),
+                Height = double.Parse(strs[4], CultureInfo.InvariantCulture)
+            };
+            return res;
+        }
+        catch (Exception)
+        {
+            return null;
+        }
+    }
+}