From 75d12d6a5a2cb0a360ec4376a74ff50ad474c3bc Mon Sep 17 00:00:00 2001
From: borovec zdenek <zdenek.borovec@dek-cz.com>
Date: Wed, 4 Sep 2024 14:36:34 +0200
Subject: [PATCH] Implement Region.GetContourCopies

---
 Commands.cs |  7 ++++++-
 Contour.cs  | 13 ++++++-------
 Region.cs   | 23 +++++++++--------------
 3 files changed, 21 insertions(+), 22 deletions(-)

diff --git a/Commands.cs b/Commands.cs
index 2519f9d..e804ccb 100644
--- a/Commands.cs
+++ b/Commands.cs
@@ -111,7 +111,12 @@ namespace Boprs
 			
 			BooleanOperation bopr = new BooleanOperation(subject, clip, type);
 
-			bopr.Result.Draw();
+			List <Contour> contours = bopr.Result.GetContourCopies();
+
+			foreach (Contour contour in contours)
+			{
+				contour.Draw();
+			}
 		}
 	}
 }
diff --git a/Contour.cs b/Contour.cs
index 8d781e4..d310f5a 100644
--- a/Contour.cs
+++ b/Contour.cs
@@ -20,17 +20,17 @@ namespace Boprs
 	/// <summary>
 	/// Simple closed polygon.
 	/// </summary>
-	public class Contour
+	public class Contour : ICloneable
 	{
-		/// <summary>
-		/// Depth of the contour within the region.
-		/// </summary>
-		internal int ContourDepth { get; set; }
+		public object Clone()
+		{
+			return new Contour() { Vertices = new List<Point2d>(Vertices) }; 
+		}
 
 		/// <summary>
 		/// Vertices of the contour.
 		/// </summary>
-		public List<Point2d> Vertices { get; }
+		public List<Point2d> Vertices { get; private set; }
 
 		/// <summary>
 		/// Are the vertices of the contour arranged in clockwise manner?
@@ -70,7 +70,6 @@ namespace Boprs
 		/// </summary>
 		public Contour()
 		{
-			ContourDepth = 0;
 			Vertices = new List<Point2d>();
 		}
 
diff --git a/Region.cs b/Region.cs
index c2c486e..e678376 100644
--- a/Region.cs
+++ b/Region.cs
@@ -173,13 +173,11 @@ namespace Boprs
 				SweepVertex acVx = vertices[i];
 				bool shouldBeCW = !acVx.Edge.TransitionInside;
 
-				Point2d target = acVx.Point;
-
-
 				// Traverse connected edges, and mark taversed vertices as processed,
 				// until we loop back to the first discovered vertex on the contour.
 				int pos = i;
 				processed[i] = true;
+				Point2d target = acVx.Point;
 				contour.Vertices.Add(vertices[pos].Point);
 				acVx.Edge.ParentContour = contour;
 				while (!Utils.DoubleEquals(vertices[pos].OtherVertex().Point.GetDistanceTo(target), 0))
@@ -226,7 +224,14 @@ namespace Boprs
 		/// <returns>List of copies of the regions contours.</returns>
 		public List<Contour> GetContourCopies()
 		{
-			throw new NotImplementedException();
+			List<Contour> copies = new List<Contour>();
+
+			foreach (Contour contour in Contours)
+			{
+				copies.Add((Contour)contour.Clone());
+			}
+
+			return copies;
 		}
 
 		/// <summary>
@@ -253,15 +258,5 @@ namespace Boprs
 
 			return region;
 		}
-
-#if DEBUG
-		internal void Draw()
-		{
-			foreach (Contour contour in Contours)
-			{
-				contour.Draw();
-			}
-		}
-#endif
 	}
 }