1. A method for generating a surface model of an anatomic structure, the method comprising: receiving, from a first sensor and a second sensor of a catheter, a plurality of location data points corresponding to respective locations on the surface of said anatomic structure, said plurality of location data points forming a point cloud; generating a first surface model of said anatomic structure based on said plurality of location data points; adding a plurality of additional data points to said point cloud, wherein said adding a plurality of additional data points to said point cloud comprises: creating a first subset of said plurality of additional data points around a first one of said location data points that are each a first predetermined distance from said first one of said location data points; creating a second subset of said plurality of additional data points around a second one of said location data points that are each a second predetermined distance from said second one of said location data points; and adding additional points to at least one of: an area between a first of said plurality of location data points and a second of said plurality of location data points; an area beyond a first of said plurality of location data points; and an area beyond a second of said plurality of location data points; updating said first surface model by constructing a second surface model based on said plurality of additional data points; and displaying the surface model of the anatomic structure by causing at least a portion of said first surface model, at least a portion of said second surface model, or both a portion of said first surface model and a portion of said second surface model to be displayed for a user.