public static Texture2D ExtractSprite(UIAtlas atlas, string spriteName)
{
if (atlas.texture == null)
{
return(null);
}
UISpriteData sprite = atlas.GetSprite(spriteName);
if (sprite == null)
{
return(null);
}
Texture2D tex = atlas.texture as Texture2D;
AtlasManager.SpriteEntry spriteEntry = AtlasManager.ExtractSprite(sprite, tex);
return(spriteEntry.tex);
}
private static AtlasManager.SpriteEntry ExtractSprite(UISpriteData es, Color32[] oldPixels, int oldWidth, int oldHeight)
{
int num = Mathf.Clamp(es.x, 0, oldWidth);
int num2 = Mathf.Clamp(es.y, 0, oldHeight);
int num3 = Mathf.Min(num + es.width, oldWidth - 1);
int num4 = Mathf.Min(num2 + es.height, oldHeight - 1);
int num5 = Mathf.Clamp(es.width, 0, oldWidth);
int num6 = Mathf.Clamp(es.height, 0, oldHeight);
if (num5 == 0 || num6 == 0)
{
return(null);
}
Color32[] array = new Color32[num5 * num6];
for (int i = 0; i < num6; i++)
{
int num7 = num2 + i;
if (num7 > num4)
{
num7 = num4;
}
for (int j = 0; j < num5; j++)
{
int num8 = num + j;
if (num8 > num3)
{
num8 = num3;
}
int num9 = (num6 - 1 - i) * num5 + j;
int num10 = (oldHeight - 1 - num7) * oldWidth + num8;
array[num9] = oldPixels[num10];
}
}
AtlasManager.SpriteEntry spriteEntry = new AtlasManager.SpriteEntry();
spriteEntry.CopyFrom(es);
spriteEntry.SetRect(0, 0, num5, num6);
spriteEntry.temporaryTexture = true;
spriteEntry.tex = new Texture2D(num5, num6);
spriteEntry.tex.name = "AtlasManager_ExtractSprite";
spriteEntry.tex.SetPixels32(array);
spriteEntry.tex.mipMapBias = 0f;
spriteEntry.tex.Apply();
return(spriteEntry);
}