Editing VRML (section)

==WRL file format==

VRML is a [[text file]] format where, e.g., [[vertex (geometry)|vertices]] and edges for a 3D [[polygon]] can be specified along with the surface color, [[UV mapping|UV-mapped]] [[texture mapping|textures]], [[specularity|shininess]], [[transparency (optics)|transparency]], and so on.<ref>{{cite web|url=http://www.web3d.org/x3d/specifications/vrml/VRML1.0/index.html |title=Version 1.0 Specification |publisher=Web3d.org |access-date=2010-02-23}}</ref><ref>{{cite web|url=http://www.martinreddy.net/gfx/3d/VRML.spec |title=VRML Version 1.0 Specification |access-date=2018-11-27}}</ref> [[Uniform Resource Locator|URLs]] can be associated with [[graphic]]al components so that a [[web browser]] might fetch a webpage or a new VRML file from the [[Internet]] when the [[user (computing)|user]] clicks on the specific graphical component. [[Animation]]s, [[sound]]s, [[lighting]], and other aspects of the [[virtual world]] can interact with the user or may be triggered by external [[Event-driven programming|events]] such as [[timer]]s. A special Script Node allows the addition of [[Source code|program code]] (e.g., written in [[Java (programming language)|Java]] or [[ECMAScript]]) to a VRML file.

VRML files are commonly called "worlds" and have the {{Not a typo|.wrl}} [[filename extension|extension]] (for example, {{Not a typo|island.wrl}}). VRML files are in [[plain text]] and generally compress well using [[gzip]], useful for transferring over the Internet more quickly (some gzip compressed files use the {{Not a typo|.wrz}} [[filename extension|extension]]). Many [[3D computer graphics software|3D modeling programs]] can save objects and [[scenery|scenes]] in VRML format.