Most objects of the real world surrounding us can be modeled in GDL space following this simple logic. set the representation attributes of the used primitives.place 2D or 3D primitives (or bodies) into the coordinate system.move the local coordinate system using and managing the transformation stack.The name of the collection of such items is a library.Īs you can see, an object created in GDL is able (and should) handle many ARCHICAD contexts.Ĭreating a GDL object is based on 3 main principles: customizing, enhancing objects shipped with ARCHICADĪn object (furniture, door, window, drawing element, etc.) created in GDL is called a library part.creating manufacturer object collection, based on specifications.creating a standard object collection for office use.These objects can serve multiple purpose: The more familiar you become with the language, the more complex objects you can add to your growing collection. The needs of your design, your background in programming and your knowledge of descriptive geometry will all probably influence where you start in GDL.īasic GDL is easy to understand: an architect with the affinity for programming is able to start creating simple objects with only a handful of commands. It was created to encourage architects to use this language to build their own geometric objects in ARCHICAD, extending the possibilities of design and presentation. GDL is the abbreviation of Geometric Description Language, a functional programming language based on BASIC.
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