Currently i have a terrain that i render using a heightmap, elevation map and detail maps. I now want to add in grass and trees (vegetation). I found this article on rendering grass, http://software.intel.com/en-us/articles/rendering-grass-with-instancing-in-directx-10, but i am wondering how i can "place" grass thru my terrain. I am assuming something like a distribution map would be needed.
Does anyone know of any good examples?
Also, if i wanted to render the grass, so that the user walks thru, the grass would shift accordingly. IN the given example, the grass moves based on wind. I would still want this, but as the user moves thru the grass the field, the grass on the right would bend to the right, and left accordingly.