GDL Scripting in Archicad: Create Parametric BIM Objects

Customizing your BIM workflow often requires highly specific objects that standard libraries simply do not provide. Learning GDL (Geometric Description Language) allows you to unlock the full potential of Archicad by scripting your own parametric elements. This comprehensive written guide takes you from a complete beginner to confidently writing your own GDL scripts. You will understand how to define variables, control 2D and 3D representations, and build intelligent, flexible library parts that behave exactly how you need them to in your architectural projects. What you'll learn: Understand GDL syntax, basic commands, and the core structure of Archicad library parts; Create parametric 2D symbols and 3D geometries that automatically adjust to user inputs; Manage parameters, variables, and coordinate systems to position elements accurately; Develop clean user interface scripts for custom object settings dialogs; Apply debugging techniques to find and fix errors in your GDL scripts; Integrate custom objects seamlessly with Archicad schedules and BIM properties. The course begins with foundational concepts, introducing you to the GDL environment and basic scripting commands. You will then progress step-by-step through creating 2D representations, building 3D shapes, and organizing parameters for maximum usability. This text-only course is designed for Archicad users, architects, and BIM coordinators who want to move beyond default library parts. No prior programming or scripting experience is required. Start writing your first GDL script today and take control of your BIM library.