LXFree for Java is an exceptional, cross-platform technical drafting application designed for creating theater light plots and automated paperwork. Developed by Claude Heintz Design, this free software bridges the gap between high-end, expensive CAD suites like Vectorworks and the budget realities of independent lighting designers, students, and community theaters. By utilizing the Java runtime, it extends the capabilities of the acclaimed macOS LX Series directly to Windows and Linux platforms.
(Note: While LXFree for Java has laid the foundation for cross-platform lighting design, it has evolved into its successor, LXPlan, which builds directly upon this legacy). Core Features
Unlike generic drawing tools, LXFree for Java is purpose-built to link visual data directly with technical databases.
Intelligent Light Plots: Users can draw stages, set pieces, and lighting positions (such as pipes, trusses, and box booms) using built-in grid-snapping mechanisms.
Comprehensive Symbol Library: The software features an extensive list of pre-defined equipment symbols from leading manufacturers like ETC and Strand.
Dynamic Information Fields: Every fixture symbol holds attached data fields, including channel, dimmer, circuit, color gel (e.g., Rosco), purpose, and unit number.
Automated Paperwork: It dynamically generates essential paperwork—such as instrument schedules, channel hooks, and counts—by pulling data directly from the graphical layout. System Requirements and File Compatibility
Because it runs on Java, the application maintains high performance across multiple operating systems with predictable file-sharing traits.
OS Support: Fully operational on Windows and Linux distributions like Ubuntu and Debian.
Java Runtime: Requires Java SE 1.8 or later, with OpenJDK variants highly recommended.
Native File Format: Saves layouts in an XML-based .lxxplot structure, enabling clean file transfers between Windows, Linux, and macOS platforms.
Graphic Formats: Embedded visual references can be cleanly handled in JPEG or PNG formats. Streamlined Workflow for Designers
Designing a show in LXFree for Java follows a logical production sequence:
Drafting the Space: Designers begin by laying out the venue’s architecture and hanging structures using custom scale lines and geometric shapes.
Placing Fixtures: Using the Lantern tool, designers filter by manufacturer, pick the correct unit type, drop it onto a pipe, and rotate it into position.
Data Entry: By opening the Inspector or Info tab, the user assigns a specific channel or color gel; entering names like “Rosco 2” automatically applies the approximate amber hue to the symbol.
Data Exchange: The final plots can be exported to standard DXF, PDF, or image files to print out or share directly with the master electrician and rigging crew.
For production environments demanding advanced features—such as 3D beam rendering, custom library builders, or illumination footprint calculations—users can seamlessly upgrade their plots into LXPlan with an LXSeries Pro license. However, for drafting tight, clean, and professional light plots on a budget, LXFree for Java remains an iconic milestone in open-source theatre technology. Quick Start Tutorial – LXFreeJava