1 files changed, 139 insertions, 0 deletions
diff --git a/UVtools.Core/Operations/OperationLayerExportSkeleton.cs b/UVtools.Core/Operations/OperationLayerExportSkeleton.cs
new file mode 100644
index 0000000..0fd56d0
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+++ b/UVtools.Core/Operations/OperationLayerExportSkeleton.cs
@@ -0,0 +1,139 @@
+/*
+ *                     GNU AFFERO GENERAL PUBLIC LICENSE
+ *                       Version 3, 19 November 2007
+ *  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ *  Everyone is permitted to copy and distribute verbatim copies
+ *  of this license document, but changing it is not allowed.
+ */
+
+using System;
+using System.Threading.Tasks;
+using Emgu.CV;
+using UVtools.Core.Extensions;
+using UVtools.Core.FileFormats;
+
+namespace UVtools.Core.Operations
+{
+    [Serializable]
+    public sealed class OperationLayerExportSkeleton : Operation
+    {
+        #region Members
+        private string _filePath;
+        private bool _cropByRoi = true;
+
+        #endregion
+
+        #region Overrides
+
+        public override bool CanHaveProfiles => false;
+        public override string Title => "Export layers to skeleton";
+
+        public override string Description =>
+            "Export a layer range to a skeletonized image that is the sum of each layer skeleton.";
+
+        public override string ConfirmationText =>
+            $"skeletonize from layers {LayerIndexStart} through {LayerIndexEnd}?";
+
+        public override string ProgressTitle =>
+            $"Skeletonizing from layers {LayerIndexStart} through {LayerIndexEnd}";
+
+        public override string ProgressAction => "Skeletonized layers";
+
+        public override string ToString()
+        {
+            var result = $"[Crop by ROI: {_cropByRoi}]" +
+                         LayerRangeString;
+            if (!string.IsNullOrEmpty(ProfileName)) result = $"{ProfileName}: {result}";
+            return result;
+        }
+
+        #endregion
+
+        #region Properties
+
+        public string FilePath
+        {
+            get => _filePath;
+            set => RaiseAndSetIfChanged(ref _filePath, value);
+        }
+
+        public bool CropByROI
+        {
+            get => _cropByRoi;
+            set => RaiseAndSetIfChanged(ref _cropByRoi, value);
+        }
+
+        #endregion
+
+        #region Constructor
+
+        public OperationLayerExportSkeleton()
+        { }
+
+        public OperationLayerExportSkeleton(FileFormat slicerFile) : base(slicerFile)
+        {
+            _filePath = SlicerFile.FileFullPath + ".skeleton.png";
+        }
+
+        #endregion
+
+        #region Methods
+
+        protected override bool ExecuteInternally(OperationProgress progress)
+        {
+            using var skeletonSum = EmguExtensions.InitMat(SlicerFile.Resolution);
+            var skeletonSumRoi = GetRoiOrDefault(skeletonSum);
+            using var mask = GetMask(skeletonSum);
+            
+
+            Parallel.For(LayerIndexStart, LayerIndexEnd+1, layerIndex =>
+            {
+                if (progress.Token.IsCancellationRequested) return;
+
+                using var mat = SlicerFile[layerIndex].LayerMat;
+                var matRoi = GetRoiOrDefault(mat);
+                using var skeletonRoi = matRoi.Skeletonize();
+                lock (progress.Mutex)
+                {
+                    CvInvoke.Add(skeletonSumRoi, skeletonRoi, skeletonSumRoi, mask);
+                    progress++;
+                }
+            });
+
+            if (!progress.Token.IsCancellationRequested)
+            {
+                if (_cropByRoi && HaveROI)
+                {
+                    skeletonSumRoi.Save(_filePath);
+                }
+                else
+                {
+                    skeletonSum.Save(_filePath);
+                }
+            }
+
+            return !progress.Token.IsCancellationRequested;
+        }
+
+        #endregion
+
+        #region Equality
+
+        private bool Equals(OperationLayerExportSkeleton other)
+        {
+            return _filePath == other._filePath && _cropByRoi == other._cropByRoi;
+        }
+
+        public override bool Equals(object obj)
+        {
+            return ReferenceEquals(this, obj) || obj is OperationLayerExportSkeleton other && Equals(other);
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(_filePath, _cropByRoi);
+        }
+
+        #endregion
+    }
+}