1. A method of generating an area of activation comprising: receiving, with one or more processors, a therapy delivery element selection, wherein the therapy delivery element selection corresponds to a therapy delivery element selected for implantation in a patient; receiving, with the one or more processors, a set of therapy parameter values, the set of therapy parameter values defining stimulation to be modeled; retrieving, from a memory, an area of activation look-up table based on the therapy delivery element selection, the area of activation look-up table comprising a neuron representative grid, wherein each neuron representative of the neuron representative grid is associated with a plurality of activation thresholds, each activation threshold of the plurality of activation thresholds being associated with a different angle of rotation around an axis, and wherein thresholds of the plurality of activation thresholds are organized into a plurality of activation threshold sets; and generating, with the one or more processors, a plurality of areas of activation based on the set of therapy parameter values, wherein each area of activation is generated based on a different activation threshold set of the plurality of activation threshold sets.