NEWS.md

In ggseg3d: Interactive 3D Brain Atlas Visualization

ggseg3d 2.1.2

• decouples tests from ggseg.formats internal workings.
• No user changes.

ggseg3d 2.1.1

Bug fixes

• Cortical hemispheres are now rendered anatomically side-by-side (LH at negative x, RH at positive x, medial edges at the midline) regardless of the mesh source. Previously, both hemispheres overlapped at the origin because ggseg.formats inflated meshes and ggseg.meshes pial/white/etc. surfaces arrived in different axis conventions. resolve_brain_mesh() now normalises to the shared x = LR, y = AP, z = SI frame and separates hemispheres at x = 0.
• set_positioning() no longer wrongly shifts subcortical meshes whose region names happen to contain "Left"/"Right" (e.g. Left-Thalamus); it only repositions cortical meshes named "<hemi> <surface>".
• add_glassbrain() warns and skips when the widget already contains a flat (2D) mesh such as a cerebellar flatmap, since flatmaps share no coordinate frame with anatomical 3D meshes.
• add_glassbrain() now defaults to surface = "inflated" so it works without ggseg.meshes installed (inflated ships with ggseg.formats).

Documentation

• Replaced \dontrun{} wrappers in widget-construction examples with executable code so examples run under R CMD check and render inline in pkgdown. Examples that require rgl (Suggests) are now gated with @examplesIf rlang::is_installed("rgl").
• Added LICENSE.note documenting the bundled Three.js and OrbitControls libraries and credited their authors in Authors@R.

Internal

• Removed the native_offset() / to_native_coords() / position_hemisphere() helpers. They were workarounds for the previous axis-convention mismatch and are no longer needed now that all meshes share a single frame.

ggseg3d 2.1.0

Cerebellar atlas support

• New cerebellar_atlas class with prepare_brain_meshes.cerebellar_atlas() method for rendering SUIT cerebellar surfaces with vertex-based colouring.
• Mixed vertex+mesh rendering for deep cerebellar nuclei: the SUIT surface renders at 30% opacity with opaque per-region meshes for deep structures.
• surface_opacity parameter controls cerebellar surface transparency when deep nuclei are present.
• Cortical mesh data moved to the 'ggseg.meshes' package, removing bundled sysdata.rda.

ggseg3d 2.0.0

Major changes

• Complete rewrite using htmlwidgets with Three.js instead of plotly
• New pipe-friendly API with chainable addition functions
• Support for unified brain_atlas format from ggseg.formats package

New features

• set_background() - set background colour
• set_legend() - control legend visibility
• set_dimensions() - set widget width and height
• set_edges() - add region boundary edges
• set_flat_shading() - disable lighting for exact colours
• set_orthographic() - use orthographic projection
• pan_camera() - position camera at standard anatomical views
• add_glassbrain() - add translucent brain surface overlay
• snapshot_brain() - save widget as PNG image
• edge.by parameter for edge grouping by data columns

Breaking changes

• Removed plotly dependency
• ggseg3d_atlas objects are deprecated (still supported with warning)

ggseg3d 1.6.3

• Prepare for CRAN
• Remove white surface from dk_3d to reduce size and pass CRAN checks
• Update github urls to new org

ggseg3d 1.6.02

• Fix bug where installing with vignettes fails

ggseg3d 1.6.01

• Added ellipsis ... to plotly::add_trace for people to add more arguments

ggseg3d 1.5.2

• Adapted to work with dplyr 0.8.1

ggseg3d 1.5.1

• Changed ggseg_atlas-class to have nested columns for easier viewing and wrangling

ggseg3d 1.5

• Changed atlas.info to function atlas_info()
• Changed brain.pal to function brain_pal()
• Reduced code necessary for brain_pals_info
• Simplified display_brain_pal()
• Moved palettes of ggseg.extra atlases to ggseg.extra package
• Added a NEWS.md file to track changes to the package
• Changes all data options to .data to decrease possibility of column naming overlap
• Added compatibility with grouped data.frames
• Reduced internal atlases, to improve CRAN compatibility
• Added function to install extra atlases from github easily
• Changes vignettes to comply with new functionality

ggseg3d documentation built on July 3, 2026, 1:09 a.m.