TractEdit v2.1.5

TractEdit v2.1.5 (December 11, 2025)

Key Features

• High-Performance Core Refactoring: Refactored the streamline rendering and selection logic to replace iterative Python loops with vectorized VTK and NumPy operations. Selection now uses a high-performance vectorized approach with pre-calculated bounding boxes (optimized via Numba jIT), allowing the tool to query 100% of the dataset instantly and decoupling selection accuracy from the visual rendering stride.
• Asynchronous I/O & Memory Optimization: Refactored file I/O to use asynchronous loading with QThread, moving heavy file reading and processing off the main GUI thread. Enforced float32 precision for streamline data.
• Advanced Visualization: Implemented support for ODF/Glyph visualization mapped to the single bundle and added a new mode for rendering streamlines as tubes.
• Density Map (TDI): Implemented the ability to generate and save a Density Map (TDI) of the currently edited bundle directly from the interface.

Minor improvements

• Overhauled the scalar data visualization pipeline to explicitly strip alpha channels and use a robust vectorized method for mapping single-value metrics to vertices.
• Optimized ROI processing using a broad-phase box filter to rapidly filter streamlines.
• Implemented an opacity slider bar for all data types in the data panel.
• Improved UX with better highlighting of selected data names in the data panel and progress bars.
• Added a comprehensive list of keyboard shortcuts to the Help menu.
• Fixed scalar data per-vertex mapping in .trx bundles.
• Fixed bugs preventing the switch between different scalar views or color schemes.
• Fixed XCB compatibility issues for Linux systems.
• Fixed bugs associated with the "Clear All" function.