public BillboardDrawingObject(Vector3[] positions, Texture2D texture, Vector2 dim, EffectDelegate effect)
{
billboard = new Billboard(effect);
textures = new Texture2D[positions.Length];
for (int i = 0; i < textures.Length; i++)
{
textures[i] = texture;
}
this.positions = new List <Vector3>(positions);
billboard.CreateBillboardVerticesFromList(this.positions, dim);
}
