1 files changed, 17 insertions, 7 deletions

diff --git a/UVtools.Core/EmguCV/EmguContours.cs b/UVtools.Core/EmguCV/EmguContours.cs
index d0ac9a5..164fe64 100644
--- a/UVtools.Core/EmguCV/EmguContours.cs
+++ b/UVtools.Core/EmguCV/EmguContours.cs
@@ -322,30 +322,40 @@ public class EmguContours : IReadOnlyList<EmguContour>, IDisposable
     }
 
     /// <summary>
-    /// Checks if two contours intersects
+    /// Checks if two contours intersects and return the intersecting pixel count
     /// </summary>
     /// <param name="contour1">Contour 1</param>
     /// <param name="contour2">Contour 2</param>
-    /// <returns></returns>
-    public static bool ContoursIntersect(VectorOfVectorOfPoint contour1, VectorOfVectorOfPoint contour2)
+    /// <returns>Intersecting pixel count</returns>
+    public static int ContoursIntersectingPixels(VectorOfVectorOfPoint contour1, VectorOfVectorOfPoint contour2)
     {
         var contour1Rect = CvInvoke.BoundingRectangle(contour1[0]);
         var contour2Rect = CvInvoke.BoundingRectangle(contour2[0]);
 
         /* early exit if the bounding rectangles don't intersect */
-        if (!contour1Rect.IntersectsWith(contour2Rect)) return false;
+        if (!contour1Rect.IntersectsWith(contour2Rect)) return 0;
         var totalRect = Rectangle.Union(contour1Rect, contour2Rect);
 
         using var contour1Mat = EmguExtensions.InitMat(totalRect.Size);
         using var contour2Mat = EmguExtensions.InitMat(totalRect.Size);
-            
+
         var inverseOffset = new Point(-totalRect.X, -totalRect.Y);
         CvInvoke.DrawContours(contour1Mat, contour1, -1, EmguExtensions.WhiteColor, -1, LineType.EightConnected, null, int.MaxValue, inverseOffset);
         CvInvoke.DrawContours(contour2Mat, contour2, -1, EmguExtensions.WhiteColor, -1, LineType.EightConnected, null, int.MaxValue, inverseOffset);
 
         CvInvoke.BitwiseAnd(contour1Mat, contour2Mat, contour1Mat);
 
-        //return !contour1Mat.IsZeroed();
-        return CvInvoke.CountNonZero(contour1Mat) > 0;
+        return CvInvoke.CountNonZero(contour1Mat);
+    }
+
+    /// <summary>
+    /// Checks if two contours intersects
+    /// </summary>
+    /// <param name="contour1">Contour 1</param>
+    /// <param name="contour2">Contour 2</param>
+    /// <returns></returns>
+    public static bool ContoursIntersect(VectorOfVectorOfPoint contour1, VectorOfVectorOfPoint contour2)
+    {
+        return ContoursIntersectingPixels(contour1, contour2) > 0;
     }
 }
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