6.838, Computational Geometry; Fall 2001

Point Location

Sergi Elizalde & David Pritchard


Incrementing T and D - Simple Case

How are T and D updated?

Simple case: si is completely contained in one trapezoid D

- In T, D is replaced by 4 trapezoids.

- In D, the leaf corresponding to D is replaced by a small tree with 2 point nodes, 1 segment node, and 4 leaves.