I’m trying to load all the sub-sprites in a 2D gridded sprite and make them available o na menu. Since there is no way to convert a sprite directly to a texture2D that I could see, I thought I’d try AssetPreview.GetAssetPreview(…)
Problem is that it’s half working and half not. Some of my sprites seem to get proper preview images while others seem to be blank. I have checked and all sprites DO show up when used on screen.
This is my code
void Update () {
if (clearPreviews){
LoadSpritePreviews();
clearPreviews=false;
}
if (tilesetSprite != _oldTilesetprite){
_oldTilesetprite = tilesetSprite;
// load tiles and tielset image
string path = AssetDatabase.GetAssetPath(tilesetSprite);
Object[] rawAssets = AssetDatabase.LoadAllAssetsAtPath(path);
_tilesetImage = (Texture2D) rawAssets[0];
_sprites = new Sprite[rawAssets.Length-1];
System.Array.Copy(rawAssets,1,_sprites,0,_sprites.Length);
LoadSpritePreviews ();
}
}
private void LoadSpritePreviews(){
// laod previews
_spritePreviews = new Texture2D[_sprites.Length];
for(int i=0;i<_sprites.Length;i++){
_spritePreviews <em>= AssetPreview.GetAssetPreview(_sprites*);*</em>
* }*
* }*
I thought maybe it was a timing thing, that the asset load was happening asynchronously, so I added a check box i could check to force it to regenerate the previews, but I still get the same results 
Here is a picture of my selection grid of the preview images:
[21062-screen+shot+2014-01-23+at+6.43.27+pm.png|21062]_
This is what the sprite importer looks like in the project window, so apparently the editor is successfully creating previews for all the sprite images…
_[21064-screen+shot+2014-01-23+at+8.11.51+pm.png*|21064]*
_*
_*
