Zdog is a JavaScript graphics library designed for rendering pseudo-three-dimensional geometric models within web browser environments. It functions as a lightweight engine that draws flat, vector-based shapes onto HTML5 canvas or SVG elements by utilizing a scene graph to manage object relationships and spatial transformations.
The library distinguishes itself through a unique approach to volumetric modeling, where three-dimensional depth is simulated on flat shapes by dynamically adjusting stroke thickness. This technique allows for the creation of rounded, plump visual effects without the overhead of complex polygon mesh processing. By organizing objects into hierarchical structures, the engine enables child elements to inherit the transformations of their parents, simplifying the construction of complex, multi-part models.
The framework provides a comprehensive set of tools for interactive web animation, including support for custom coordinate paths, animation easing, and lifecycle hooks for frame-by-frame updates. It also includes built-in capabilities for user interaction, allowing for direct manipulation of scene rotation via mouse or touch gestures. The system automatically handles responsive display requirements, ensuring that graphics remain fluid and clear across varying screen sizes and device resolutions.
