Unity - PostProcess Model - Swap UVs

SwapUVs.cs

#define DEBUG_ON
using UnityEngine;
using UnityEditor;
using System.Collections;
using System.Collections.Generic;
 
public class SwapUVs : AssetPostprocessor
{
 
  const string CLabel = "pp_swapuvs"; // Asset needs to have this label to be processed
	
	void OnPostprocessModel (GameObject g)
	{
		Apply (g.transform);
	}
 
	void Apply (Transform transform)
	{
		var assetLabels = new List<string> (AssetDatabase.GetLabels (assetImporter));
	
		
		if (!assetLabels.Contains (CLabel)) // Contains label?
			return;
		
		var thisMeshFilter = transform.GetComponent<MeshFilter> ();
		
		
		if (thisMeshFilter == null)
			return;
		
		var thisMesh = thisMeshFilter.sharedMesh;
		
		if (thisMesh == null)
			return;
		
		if (thisMesh.uv2 == null) // Not sure if it's possible for this to return null, but JIC
			return;
		
		
		var uv1 = thisMesh.uv;
		
		thisMesh.uv = thisMesh.uv2;
		thisMesh.uv2 = uv1;
		
#if DEBUG_ON
		Debug.Log (string.Format ("Swapped UVs for {0}", transform.name));
#endif
	}
}