v2.23.1v2.23.1

- **Issues:**
   - (Add) Suction cups: Additional setting to specify the required minimum height to be flagged as a issue (#302)
   - (Change) Allow touching bounds to have a bounding rectangle and zoom into the issue
   - (Change) Disable the ability to copy issues row text from list as this is crashing the program
   - (Change) Decrease cache count of the layers from x10 to x5 to free RAM
   - (Fix) Touching bounds are reporting areas of 0
   - (Fix) Draw crosshair for issues are called multiple times
   - (Fix) Detection error when resin traps are enabled on some cases (#303)
   - (Fix) Resin trap false-positives (#305)
   - (Fix) When removing multiple islands at once only the first is cleared from the issue list
- **UI:**
   - (Change) Tool - Resize icon
   - (Change) Move "Crosshairs" button inside "Issues" button
- (Add) Tool - Morph - Offset crop: Like erode but discards the outer pixels
- (Fix) Corrected bottom lift unit label in light-off delay calculator (#304)

1 files changed, 4 insertions, 10 deletions

diff --git a/UVtools.Core/Extensions/EmguExtensions.cs b/UVtools.Core/Extensions/EmguExtensions.cs
index 90473c4..1e85659 100644
--- a/UVtools.Core/Extensions/EmguExtensions.cs
+++ b/UVtools.Core/Extensions/EmguExtensions.cs
@@ -515,15 +515,9 @@ namespace UVtools.Core.Extensions
         /// <param name="mat"></param>
         /// <param name="threshold">Pixel brightness threshold</param>
         /// <returns></returns>
-        public static unsafe bool IsZeroed(this Mat mat, byte threshold = 0)
+        public static bool IsZeroed(this Mat mat, byte threshold = 0)
         {
-            var ptr = mat.GetBytePointer();
-            var length = mat.GetLength();
-            for (var i = 0; i < length; i++)
-            {
-                if (ptr[i] > threshold) return false;
-            }
-            return true;
+            return mat.FindFirstPixelGreaterThan(threshold) == -1;
         }
         #endregion
 
@@ -546,7 +540,7 @@ namespace UVtools.Core.Extensions
         /// <returns>Pixel position in the span, or -1 if not found</returns>
         public static int FindFirstPositivePixel(this Mat mat)
         {
-            return mat.FindFirstPixelEqualOrGreaterThan(1);
+            return mat.FindFirstPixelGreaterThan(0);
         }
 
         /// <summary>
@@ -1117,7 +1111,7 @@ namespace UVtools.Core.Extensions
 
                 // if there are no more 'white' pixels in the image, then
                 // break from the loop
-                if (image.FindFirstPixelEqualOrGreaterThan(1) == -1) break;
+                if (image.IsZeroed()) break;
             }
 
             return skeleton;