My dissertation entitled  Validated forced-based modeling of pedestrian dynamics

  Purpose:  Given the parameters of two ellipses, this function calculates
            the area of overlap between the two curves.  If the ellipses are
            disjoint, this function returns 0.0; if one ellipse is contained

            within the other, this function returns the area of the enclosed

Open Ped Sim  (OPS) is an open-source project dedicated to scientific research in pedestrian dynamics. OPS is structured in several modules:

1. Editor: Processes the input data of the simulation core. 

2. Simulation core: Implements different modeling approaches (Cellular Automata model and Force-based models).

  Investigation of an evacuation assistant for use in emergencies during large-scale public events