Code refactor

Assets/Scripts/Graphics/SingleGraphic.cs

@@ -0,0 +1,51 @@
+using System;
+using System.IO;
+using System.Collections.Generic;
+using System.Linq;
+using System.Xml.Serialization;
+using UnityEngine;
+
+namespace RimWorldAnimationStudio
+{
+    [Serializable]
+    public class SingleGraphic
+    {
+        public string path = "Invalid file path";
+        [XmlIgnore] public Sprite sprite = null;
+
+        public void SetPath(string path)
+        {
+            string streamingAssets = Path.GetFullPath(Application.streamingAssetsPath);
+            string combinedPath = Path.GetFullPath(Path.Combine(streamingAssets, path));
+
+            if (path == null || path.Any() == false || Path.GetExtension(path) != ".png")
+            { this.path = null; return; }
+
+            if (File.Exists(path) == false && File.Exists(combinedPath) == false)
+            { this.path = null; return; }
+
+            if (path.Contains(streamingAssets))
+            {
+                path = path.Replace(streamingAssets, "");
+                path = path.TrimStart(new char[] { '\\', '/' });
+            }
+
+            this.path = path;          
+            sprite = LoadSprite(Path.GetFullPath(Path.Combine(streamingAssets, path)));
+        }
+
+        public Sprite LoadSprite(string path)
+        {
+            if (path == null || path.Any() == false || File.Exists(path) == false || Path.GetExtension(path) != ".png") return null;
+
+            byte[] pngBytes = File.ReadAllBytes(path);
+
+            Texture2D texture = new Texture2D(2, 2);
+            texture.LoadImage(pngBytes);
+
+            Sprite sprite = Sprite.Create(texture, new Rect(0.0f, 0.0f, texture.width, texture.height), new Vector2(0.5f, 0.5f), 85.0f);
+
+            return sprite;
+        }
+    }
+}