Implement visual parameter manipulation in 3D viewport with reusable
gizmo components. Features snap-to-mesh (Ctrl), precision mode (Shift),
and real-time feedback. Includes cone gizmos for dimensions,
arc gizmo for swing direction, and icon gizmos for edit controls. Gizmos are globally are individually toggleable in the addon preferences.
May be expanded upon later to add gizmos to other paramaterized elements (window, railing, roof, stairs, array, ...).
Unfortunately gizmos can't tap into the builtin snap system or bonsai snap system which is built for modal operators so gizmos implement yet another custom rather naive snap system.
When importing spatial decomposition, get_storey_elevation() returns values in the project's unit system (e.g., feet), but format_distance() expects values in meters. Added unit_scale conversion (elevation * unit_scale) before formatting to ensure elevations display correctly regardless of project units.
Level annotations were incorrectly converting feet to meters and back,
causing values like 3ft to display as 9'10". Updated format_value() to
accept in_unit_length parameter and pass it to format_distance(), since
Blender's Z coordinates are already in project units.
- Add in_unit_length parameter to BaseDecorator.format_value()
- Set in_unit_length=True in PlanLevelDecorator.draw_labels()
- Set in_unit_length=True in SectionLevelDecorator.draw_labels()
Replaced duplicate format_distance in unit.py with comprehensive MeasureIt-ARCH version from helper.py. Fixed critical floating point errors by changing inPerFoot from 11.9999 to 12.0, eliminating spurious fractions on whole numbers. Implemented auto-precision detection to simplify fractions (64/256 → 1/4) while preserving precise values like 3/256 when needed. Enhanced imperial parsing to support flexible input formats (optional symbols, mixed fractions, leading decimals) and fixed suppress_zero_inches functionality in dimension annotations.
Files saved in previous Blender versions stored position checksums as float64
(24 bytes for location, 72 bytes for rotation), but the current code only
expected float32 format. This caused a shape mismatch error (6,) vs (3,) when
comparing checksums during save operations.
Added byte size detection in is_moved() methods to automatically handle both
old float64 and new float32 checksum formats, ensuring backward compatibility
with files from previous versions.
Fixes ValueError when saving IFC files loaded from older Blender versions.
Note: rv3d.perspective_matrix should be avoided in these context. Use a numpy version of np.array(window_matrix) @ np.array(view_matrix). See https://github.com/IfcOpenShell/IfcOpenShell/issues/7046
Note2: region_2d_to_origin_3d_np clamp should be used for the snap to work in orthographic view.
Ryan Schultz