Extend mesh utils

Author: ElasticSea

Scripts/Extensions/MeshExtensions.cs

@@ -68,6 +68,69 @@ public static Mesh ExtendMesh(this Mesh source, Vector3 minExtends, Vector3 maxE
             return mesh;
         }
 
+        /// <summary>
+        /// Sets vertices that are bigger than center x size
+        /// </summary>
+        public static Mesh SetXSizeRight(this Mesh source, float size)
+        {
+            return source.SetXSizeRight(size, Vector3.one/2f);
+        }
+        
+        /// <summary>
+        /// Sets vertices that are bigger than center x size
+        /// </summary>
+        public static Mesh SetXSizeRight(this Mesh source, float size, Vector3 normalizedCenter)
+        {
+            var mesh = source.Clone();
+            var bounds = mesh.bounds;
+            var vertices = mesh.vertices;
+            var boundsCenter = bounds.min + bounds.size.Multiply(normalizedCenter);
+            var offset = size - bounds.size.x;
+
+            for (var i = 0; i < vertices.Length; i++)
+            {
+                var vert = vertices[i];
+                var x = vert.x < boundsCenter.x ? vert.x - offset : vert.x;
+                vertices[i] = new Vector3(x, vert.y, vert.z);
+            }
+
+            mesh.vertices = vertices;
+            mesh.RecalculateBounds();
+
+            return mesh;
+        }
+        
+        /// <summary>
+        /// Sets vertices that are bigger than center x size
+        /// </summary>
+        public static Mesh SetXSizeLeft(this Mesh source, float size)
+        {
+            return source.SetXSizeLeft(size, Vector3.one/2f);
+        }
+        
+        /// <summary>
+        /// Sets vertices that are bigger than center x size
+        /// </summary>
+        public static Mesh SetXSizeLeft(this Mesh source, float size, Vector3 normalizedCenter)
+        {
+            var mesh = source.Clone();
+            var bounds = mesh.bounds;
+            var vertices = mesh.vertices;
+            var boundsCenter = bounds.min + bounds.size.Multiply(normalizedCenter);
+            var offset = size - bounds.size.x;
+
+            for (var i = 0; i < vertices.Length; i++)
+            {
+                var vert = vertices[i];
+                var x = vert.x > boundsCenter.x ? vert.x + offset : vert.x;
+                vertices[i] = new Vector3(x, vert.y, vert.z);
+            }
+
+            mesh.vertices = vertices;
+            mesh.RecalculateBounds();
+
+            return mesh;
+        }
 
         /// <summary>
         /// Moves vertices from the center to each direction