since roofs and awnings don't absorb water, runoff from structures should also be a part of your landscape master plan and your landscape designer should take this into account.
由于屋顶和天棚不吸水,从结构径流也应该是你的风景总体规划的一部分,您的景观设计师应该考虑到这一点。
your ideas and preferences can be integrated to create a computerized landscape master plan that lets you freely move design elements around while trying different colors and schemes.