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GeometryCore is a java library to quickly develop prototypes for geometric algorithms and tools. It has five primary foci
(1) Standalone, quick to set up and portable. This library does not depend on other libraries beyond the standard java libraries. Being native java, it should readily work on most platforms.
(2) Providing some basic functionality for working with geometric objects in 2D. See the nl.tue.geometrycore.geometry package for the implementation
(3) Ease of setting up a GUI with some default interaction. See the nl.tue.geometrycore.gui / geometryrendering packages. Most important is to extend from GeometryPanel (geometryrendering package). You can quickly create a JFrame using the function in GUIUtils (gui package). Optionally, you can also provide a TabbedSidePanel (gui package) for quickly creating a basic GUI in code.
(4) Ease of importing and exporting to IPE and IPE files. IPEReader and IPEWriter are the main classes for this functionality (nl.tue.geometrycore.io.ipe package). Note that the constructors are static functions.
(5) Abstraction of rendering code from the target (GUI, IPE, SVG, PNG). The same BaseWriter (nl.tue.geometrycore.io package) is implemented for different targets (Raster images, Swing, IPE and SVG formats). See the respective subpackages. Also note that the GeometryPanel (focus 3) uses such a base writer. You can re-use the drawScene() method for other targets by creating the appropriate writer and calling render() on the GeometryPanel.
Beyond this core functionality, the library offers some basic implementations of graphs, data structures and algorithms.
These tutorials are aimed at rapidly prototyping ideas and may not necessarily reflect best practices in software development or efficient implementations.
Tutorial: The basic geometry principles (under development)
Tutorial: Drawing geometries (under development)
Tutorial: Taking screenshots (under development)
Tutorial: Creating a basic side panel (under development)
Tutorial: Creating an advanced side panel (under development)
Tutorial: Standard algorithms and data structures (under development)
Tutorial: Using graphs represented as adjacency lists
Tutorial: Working with a graph as a DCEL (under development -- but principles are similar to adjacency lists)