Creating sprite in code using TextureImporter with C#?

Question

I'm trying to create a Sprite based on an external texture. The intended functionality once I finish is that a user would be able to select a photo from an external source and use that as their sprite. My problem is trying to convert that texture into a sprite, which so far I haven't been able to do.

 using UnityEngine;
 using UnityEditor;

 public Material defaultMaterial; //prefab material set already
 IEnumerator Start()
 {
 
 SpriteRenderer renderer = gameObject.GetComponent<SpriteRenderer>();
 string path = "file://C:\\Users\\i5\\Documents\\My2DProject\\Assets\\oranges.png";
 
 TextureImporter tImport =  AssetImporter.GetAtPath(path) as TextureImporter;
 TextureImporterSettings tImportSettings = new TextureImporterSettings();
 
 tImport.isReadable = true;
 //Throws an error NullReferenceException: Object reference not set to an instance of an object
 tImport.textureType = TextureImporterType.Sprite;
 tImportSettings.spriteMode = 1;
 tImport.SetTextureSettings(tImportSettings);
 
 renderer.sprite = //How can I convert the oranges.png texture into a sprite with TextureImporter tImport? I'm stuck on this part.
 renderer.material = defaultMaterial;
 }

Answer 1

Best Answer

Answer by Stone-Legion · Nov 23, 2013 at 01:19 AM

Solved my problem, here is the solution. Note you can swap the path for a URL if you want to load an image from the web.

 using UnityEngine;
 using UnityEditor;
  
 public Material defaultMaterial; //prefab material set already
 IEnumerator Start()
     {
         string path = "file://C:\\Users\\i5\\Documents\\My2DProject\\Assets\\oranges.png";
         WWW www = new WWW(path);
         yield return www; 
 
         SpriteRenderer renderer = gameObject.GetComponent<SpriteRenderer>();
         Sprite sprite = new Sprite();
         sprite = Sprite.Create(www.texture, new Rect(0, 0, 170, 170),new Vector2(0, 0),100.0f);
 
         renderer.sprite = sprite;
         renderer.material = mat;
 }

For more see http://docs.unity3d.com/Documentation/ScriptReference/Sprite.Create.html

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flowery · Feb 23, 2016 at 11:08 AM 0

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Hey, I'm searching for the same functionality. What do you mean by "prefab material set already" ? How do I do that? Thanks.

bintangd · Apr 22, 2016 at 01:00 PM 0

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nice information.. but now the picture's quality will be down (resolution). how to make the picture's resolution same with the picture real ??

Creating sprite in code using TextureImporter with C#?

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