struct OberonObject uint32_t geometry_id; uint32_t material_id; float transform[16]; // Matrix float bounds[4]; // Screen-space x_min, y_min, x_max, y_max uint32_t layer; // For depth sorting ;
: It uses specific parameters (like minimum/maximum size and weight) to determine how much space each object should occupy relative to its neighbors. Historical Significance Developed as part of the Oberon System 3 (and later integrated into Aos/Bluebottle
The Oberon Object Tiler applies these exact principles to computer graphics and memory layout. In traditional graphics systems, rendering complex scenes or large-scale interfaces often involves managing massive, continuous blocks of memory or navigating deep, pointer-heavy object trees. Both approaches introduce bottlenecks:
This article explores the architecture, philosophy, and technical implementation of the Oberon Object Tiler, illustrating how a system built decades ago still offers profound lessons for modern user interface design. 1. The Philosophy of the Oberon User Interface Oberon Object Tiler
Open CorelDRAW and create or import the object you want to tile.
The Oberon Object Tiler is a free VBA (Visual Basic for Applications) macro designed for CorelDRAW. Its core function is simple yet incredibly powerful: it takes a selected object—such as a business card design, a label, a badge, or any other graphic element—and automatically duplicates it across your page in a grid pattern, tiling the page efficiently. The macro is designed to maximize the use of space, ensuring that as many copies as possible fit onto your sheet. This is a common requirement for anyone printing multiple identical items on a single sheet of paper or label stock.
While users must navigate its compatibility quirks and potential stability issues, its blend of smart automation and manual control makes it an enduring piece of software. For many, the Oberon Object Tiler remains a first-choice tool for one simple reason: it saves time, reduces repetitive strain, and just works. The Oberon Object Tiler is a free VBA
The macro's specific feature set makes it perfectly suited for certain repetitive design tasks:
This clean separation allows the tiler to manage geometry while objects manage semantics.
Moving away from classic Object-Oriented Programming (OOP) where data and methods are tightly bundled, the Oberon Object Tiler prioritizes Data-Oriented Design. It stores object properties (like positions, velocity vectors, and texture references) in contiguous arrays. This setup allows modern CPU architectures to utilize sequential reads, maximizing cache hits and minimizing latency. How It Works: The Pipeline In technical terms
Furthermore, because the tiler structures the screen logically rather than just visually, event routing is trivial. When a mouse click occurs at coordinates (MX, MY) , the Object Tiler traverses the active tracks, finds the track containing MX , and then traverses the viewers within that track to find the one enclosing MY . The click event is then packaged into an InputMsg and sent straight to that viewer's handler. 5. Legacy and Modern Equivalents
The Oberon Object Tiler is a tiling system for the Oberon operating system, which provides a flexible and efficient way to manage and display objects on the screen.
: Ensure Visual Basic for Applications (VBA) is installed with your CorelDRAW suite (note that Home & Student versions often do not support macros).
CorelDRAW does have native tools for duplication, such as the docker. However, these tools lack the specialized, print-oriented features of the Object Tiler. While you can use the Transform docker to create a grid of objects, you would then need to manually add crop marks and adjust for bleeds. The Oberon Object Tiler combines all these steps into a single, automated process. It is a purpose-built imposition tool that saves far more time than using generic duplication features.
In technical terms, the Object Tiler is responsible for scanning the display list and rendering visible objects. The process can be broken down into three distinct phases: