1. A method comprising: storing a plurality of predefined volumetric stimulation templates in a memory, wherein each of the plurality of predefined volumetric stimulation templates is a predetermined stimulation volume that is defined by a respective set of electrical stimulation parameters; subsequent to storing the plurality of predefined volumetric stimulation templates in the memory, receiving stimulation input from a user defining a stimulation field within a visual representation of an anatomical region of a patient; responsive to receiving the stimulation input from the user, selecting, by a processor and based on the stimulation field, a set of multiple predefined volumetric stimulation templates from among the plurality of predefined volumetric stimulation templates stored in the memory, wherein the selected set of multiple predefined volumetric stimulation templates approximate the stimulation field defined by the user; displaying the selected set of multiple predefined volumetric stimulation templates in conjunction with the stimulation field defined by the user over the visual representation of the anatomical region of the patient; and controlling delivery of electrical stimulation therapy to the patient according to the respective sets of electrical stimulation parameters that define the selected set of multiple volumetric stimulation templates.