1. A system comprising: a processor with a three-dimensional model generator to generate a three-dimensional model based on a two-dimensional image; a haptic user interface including an electroactive material; and a digital to analog controller to generate an electrical signal to trigger a change in one or more material characteristics of the electroactive material of the haptic user interface to create a three-dimensional haptic representation in the haptic user interface of at least a portion of the two-dimensional image, wherein the electrical signal is to create a degree of rigidity or curvature to be applied to different segments of the haptic user interface, and wherein intermediate voltages are to produce intermediate states of bending, the different segments including a smaller segment and a larger segment, wherein the smaller segment is smaller than the larger segment, and wherein the electrical signal is to produce a greater bending force when applied to the smaller segment than when applied to the larger segment.