-- 对Quad的封装，更能适合2D游戏开发
local Sprite = {} 

Sprite.New = function(quad) 
    local spr = {} 
    spr.quad = Jin.Quad.New(quad) 
    spr.pivot = Jin.Vector2.New(0.5, 0)
    spr.transform = Jin.Transform.New()
    spr.depth = 0
    return spr
end

Sprite.SetDepth = function(self, depth)
    spr.depth = depth
end

Sprite.SetTexture = function(self, tex, reset_quad) 
    
end 

Jin.Sprite = Sprite