A system configured to determine one or more boundaries of the space, for example, in 3D applications. In some cases, the system may generate point data including a set of safe points in a space and a set of unsafe points in the space, the space surrounding a user device of the system, generate a triangulation over a union of the set of safe points and the set of unsafe points, determine triangles of the triangulation that include at least one safe point and determine edges of determined triangles which are part of a single triangle that include at least one safe point. The system may then determine one or more boundaries of the space using the determined edges.