X-Plane/Developing/WorldMaker

WorldMaker is X-Plane's free application for editing scenery. This page is specific to X-Plane 8; for information on WorldMaker 7 please see the separate document.

Limitations of WorldMaker 8

Previous versions of WorldMaker were capable of editing both version 6/7 scenery files (ENV) files and version 6/7 airport information (apt.dat and nav.dat files). However, WorldMaker 8 is only capable of editing airport (apt.dat and nav.dat) files; it cannot edit version 7 (ENV) or version 8 (DSF) scenery files.

WorldMaker's previous scenery editing capabilities depended on the X-Plane 6/7 scenery rendering engine. This code was totally rewritten for X-Plane 8. As a result, the developers had to remove WorldMaker's scenery editing capabilities.

WorldMaker 8 is provided primarily as a way to edit airport layouts and nav data. It is also usefull as a preview tool for people customizing terrain textures as it loads faster than X-Plane and it displays the terrain without fogging.

Airport Layout and Nav Data Editing

TODO: Documentation on how to edit this data using WM.

Additional Capabilities

X-Plane 8 introduces some new text file formats that help X-Plane to render X-Plane 8 DSF scenery files. WorldMaker 8 has some tools to help edit or preview these new files.

Facade Editor

A facade file (.fac) is a text file that describes how to apply a texture to a polygonal extruded building. WorldMaker's Facades tab lets you open and edit a .fac and view a realtime preview of the facade with textures.

Road Editor

A road network file (.net) is a text file that describes how to apply a texture to extruded road networks. WorldMaker's roads tabl ets you open and edit a .net file and view a realtime preview of the road network's various segments.

Terrain Tab

A terrain info file (.ter) is a text file that describes how a texture should be applied to the terrain mesh to create the appearance of various types of terrain. WorldMaker does not feature a terrain info file yet. However, the terrain tab does allow you to preview compositing of various bitmaps.

Warning: X-Plane 8 introduced the concept of composite terrains, or terrain based on a modulation of two bitmaps. However it turns out that compositing produces graphic artifacts on a number of graphic cards. For this reason, the global scenery will probably not use composite terrains, and the ability to preview them in WorldMaker 8 is probably not useful. Composite terrains will be reintroduced in the future as a supported technique once the graphic issues are resolved. Scenery that relies on composite terrain will work in future copies of X-Plane, but the rendering may have artifacts.

Other Tools

At this time there are no publicly available, easy to use tools to create Generation-8 scenery. The development team is working pretty much full time on Gen-8 scenery and tools.

[DSF2Text | http://www.xsquawkbox.net/scenery/tools.php] is a command line or drag & drop application that can convert DSF files to a text format and back. This can be used to manually add objects to an existing DSF file, but the process is tedious.

Andrew McGreggor is working on a tool to transfer objects from an ENV file to an existing DSF file using DSF2Text and his own code.

Future Scenery Tool Plans

Laminar Research will be releasing their internal scenery development tools (currently titled "WorldEditor", but likely to change to avoid total confusion) both in source and binary form. WorldEditor will allow authors to use all techniques used to create the V8 global scenery and also to create custom scenery. WorldMaker 8 will not be the main scenery editing tool.

Open Source Tools

The scenery creation code uses [www.cgal.org CGAL] and other GPL'd or copyleft libraries; as a result it will be released in source under an appropriate open source license.

This creates some tricky issues for scenery tool creation. Because Laminar is not prepared to release X-Plane's rendering engine in source, and because the GPL and other such liscenses are contagious (requiring all code integrated with a GPL'd application to be open sourced), it may not be possible to use X-Plane's rendering code to provide WYSIWYG preview of scenery in the creation tools.

Because WorldMaker 8 is not open source, it can use X-Plane's code to show previews of facades, roads, etc.

External Links

• The X-Plane 8 Scenery Web Site.
• This text was heavily lifted from a post made by Ben Supnik on the X-Plane.org forum.