Fix LGS swapped resolution

LGS: Some plugins and slicers use XY resolution information, while others are swapped, a auto swap will be performed when required (#59)

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## /09/2020 - v0.8.2.3
 
+* (Fix) LGS: Some plugins and slicers use XY resolution information, while others are swapped, a auto swap will be performed when required (#59)
 
 ## 16/09/2020 - v0.8.2.2
 

UVtools.Core/FileFormats/LGSFile.cs

@@ -44,8 +44,8 @@ namespace UVtools.Core.FileFormats
             [FieldOrder(5)] public uint Uint_18 { get; set; } = 34; // 0x18: 34 ?
             [FieldOrder(6)] public float PixelPerMmY { get; set; }
             [FieldOrder(7)] public float PixelPerMmX { get; set; }
-            [FieldOrder(8)] public float ResolutionY { get; set; }
-            [FieldOrder(9)] public float ResolutionX { get; set; }
+            [FieldOrder(8)] public float ResolutionX { get; set; }
+            [FieldOrder(9)] public float ResolutionY { get; set; }
             [FieldOrder(10)] public float LayerHeight { get; set; }
             [FieldOrder(11)] public float ExposureTimeMs { get; set; }
             [FieldOrder(12)] public float BottomExposureTimeMs { get; set; }
@@ -439,6 +439,14 @@ namespace UVtools.Core.FileFormats
                     throw new FileLoadException("Not a valid LGS file!", fileFullPath);
                 }
 
+                // Fix inconsistencies found of different version of plugin and slicers
+                if (ResolutionX > ResolutionY)
+                {
+                    var oldX = ResolutionX;
+                    ResolutionX = ResolutionY;
+                    ResolutionY = oldX;
+                }
+
                 int previewSize = (int) (HeaderSettings.PreviewSizeX * HeaderSettings.PreviewSizeY * 2);
                 byte[] previewData = new byte[previewSize];
 

UVtools.Core/Helpers.cs

@@ -102,5 +102,12 @@ namespace UVtools.Core
         {
             return width * y + x;
         }
+
+        public static void SwapVariables<T>(ref T var1, ref T var2)
+        {
+            var backup = var1;
+            var1 = var2;
+            var2 = backup;
+        }
     }
 }