/// <summary>
/// 是否还须扩展，满足2的n次方不需要
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public static bool GetWrapEnable(string path)
{
Texture2D texture = AssetDatabase.LoadAssetAtPath <Texture2D>(path);
if (texture != null)
{
Vec2Int wrapSize = GetWrapSize(texture.width, texture.height);
return(wrapSize.Equals(new Vec2Int(texture.width, texture.height)));
}
return(true);
}
/// <summary>
/// 扩充png
/// </summary>
/// <param name="texture"></param>
/// <param name="anchor"></param>
/// <returns></returns>
public static Texture2D Expand(Texture2D texture, TextAnchor anchor = TextAnchor.MiddleCenter)
{
Vec2Int wrapSize = GetWrapSize(texture.width, texture.height);
if (wrapSize.Equals(new Vec2Int(texture.width, texture.height)))
{
return(null);
}
bool alphaEnable = GetAlphaEnable(texture);
Texture2D newTex = new Texture2D(wrapSize.x, wrapSize.y, TextureFormat.ARGB32, false);
ResetTex(newTex, alphaEnable);
Vec2Int start = GetStartPos(wrapSize, texture.width, texture.height, anchor);
Color[] colors = texture.GetPixels();
newTex.SetPixels(start.x, start.y, texture.width, texture.height, colors);
return(newTex);
}