local s = cc.Director:getInstance():getWinSize()
self._camera = cc.Camera:createPerspective(60, s.width / s.height, 1, 1000)
self._camera:setCameraFlag(cc.CameraFlag.USER1)
local pos3D = sprite:getPosition3D()
self._camera:setPosition3D(cc.vec3(pos3D.x, pos3D.y + 330, pos3D.z + 1300))
self._camera:lookAt(sprite:getPosition3D(), cc.vec3(0,1,0))
self:addChild(self._camera)
sprite:setCameraMask(2);
sprite3D要新增一个camera 但是设置sprite:setCameraMask(2) sprite就不显示了,这要怎么处理