Depth of Field

a distance function, that yields the distance between and ; a function, , which interpolates between and ; a function, , that yields random numbers between and ; and

With the previous definitions in mind, you can draw all the lines, , in your graph structure using the following method: Sample a fixed number of times, or according to the length of . One thing to keep in mind is that this method doesn’t really require you to work in 3D space. The sampling might as well happen in 2D, and the sampling radius, , described above, could be any number different functions.

Source: inconvergent.net