A method for sculpting a three-dimensional, graphical environment. The method comprises receiving structure data that structurally defines the graphical environment at a first resolution, and storing composite data based on the structure data received. The composite data includes a first subset defining the graphical environment at the first resolution. The method further comprises exporting section-localized data based on the composite data, the section-localized data defining a section of the graphical environment at least structurally, and receiving refined section-localized data defining a section of the graphical environment at a second resolution finer than the first resolution. The method further comprises augmenting the composite data to include a second subset, which, in combination with the first subset, defines at least the section at the second resolution, according to the refined section-localized data received.