This processor computes potentials at the position of pedestrians if and only if the org.vadere.simulator.models.MainModel is in fact a PotentialFieldModel. The pedestrian position is determined by the registered PedestrianPositionProcessor. Therefore, this can be, for example, the interpolated position. Note that computing the agent potential can be computational expensive. This processor can be used to compute the geodesic distance to a target if the target potential is a static potential using F(x) = 1 as the traveling speed of the wave in the eikonal equation! By this one can compute the distance between agent with respect to the target. If a targetId is specified i.e. it is not -1 then it will be used instead of the targetId of the agent's target. @author Benedikt Zoennchen
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