[unity] Fixed GetRepackedSkin issue with polygon packing and 270 degree rotation and atlas is non-square. Closes #2445.

spine-unity/Assets/Spine/Runtime/spine-unity/Utility/AtlasUtilities.cs

@@ -740,11 +740,12 @@ namespace Spine.Unity.AttachmentTools {
 			float v2 = uvRect.yMin;
 
 			if (referenceRegion.degrees == 270) {
-				// at a 270 degree region, u2/v2 deltas are swapped, and delta-v is negative.
-				float du = u2 - u;
-				float dv = v - v2;
-				u2 = u + dv;
-				v2 = v - du;
+				// at a 270 degree region, u2/v2 deltas and atlas width/height are swapped, and delta-v is negative.
+				float du = uvRect.width; // u2 - u;
+				float dv = uvRect.height; // v - v2;
+				float atlasAspectRatio = page.width / page.height;
+				u2 = u + (dv / atlasAspectRatio);
+				v2 = v - (du * atlasAspectRatio);
 			}
 
 			return new AtlasRegion {

spine-unity/Assets/Spine/package.json

@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-unity",
 	"displayName": "spine-unity Runtime",
 	"description": "This plugin provides the spine-unity runtime core.",
-	"version": "4.1.33",
+	"version": "4.1.34",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",