Pack conditional vertices by color and material in high/shared/low order so each LOD draws with one non-indexed call per section. Calculate bounds from direct vertex ranges, support meshes without index data, and rename the section draw fields.
Fix conditional vertex remapping in included primitives and bump the mesh cache version to rebuild stale data.
Fixes#644
Generate SDF glyphs for viewport overlays with configurable text and halo colors. Render view-sphere labels directly on the sphere surface from a compact vertical atlas, fitting translated labels to the printable area. Preserve the bitmap paths when shader objects are unavailable.
Replace the saved history entry pointer with monotonic revision IDs so branching after undo cannot leave a dangling marker or accidentally reuse an address. Preserve selection-only history behavior and prevent merges from modifying the saved revision.
Remap renamed submodel IDs in pending, undo, and redo snapshots so restoring an older edit continues to resolve the live submodel. Update the renamed model's property snapshots as well while preserving saved-history entry identity.
Include the current step, Add Keys mode, and property edit ID in the history merge key so repeated edits do not coalesce across timeline contexts. Replace the packed property ID representation with an explicit typed field and separate mergeable history creation from ordinary edits.
Add a camera-facing rotation ring with hover feedback, and replace free XYZ rotation with a trackball interaction. Improve rotation-disc feedback, cursor behavior, snapping, and submodel transform handling.
Leonardo Zide