As three-dimensional (3D) printing and additive manufacturing becomes a way for individuals and companies to distribute physical goods, there is a growing need for creators of physical goods to enable customers to customize 3D printed objects while protecting core electronic assets in the form of the files used to define and print the objects. Server-side rendering of 3D object images provides an opportunity to protect 3D object files while offering performance advantages. A scripting language may be central to delivering a seamless user experience interacting with 3D object models on client devices. Object creators and vendors may rely on the scripting language to create user interfaces for selling customizable objects. And once the user interface is developed, it may provide the basis for users accessing, viewing, manipulating, selecting materials, rendering, pricing, and printing a range of 3D objects.