I have a point located inside of a closed surface. The surface is non-uniform and consists of overhangs and areas not directly visible from the point.
I am am trying to find the area of the surface that Is direcly visible from the point, i.e. Areas where there is an unbroken line of sight between point and surface.
I have a machine that sprays water in all directions. It is located inside of a irregular shaped tank. I am trying to find the area of the surface that the water directly hits.