Fixes issue #3910's documentation gap. IsDefinedBy() returns
IfcRelDefinesByProperties relationship objects, not the property set
itself, and RelatingPropertyDefinition() must be used to reach the
IfcPropertySet or IfcElementQuantity. Properties can also come from an
element's type via IsTypedBy() -> RelatingType() -> HasPropertySets(),
a path that is easy to miss because it works differently. Adds a
worked, beginner-commented, compilable example covering both paths.
Generated with the assistance of an AI coding tool.
The ifcopenshell take-off engine left every Qto_EarthworksFillBaseQuantities
value null, so Bonsai added the qset with no numbers on IFC4X3 models. Map the
geometrically derivable quantities using the slab axis convention: Length on
local X, Width on local Y, Depth on local Z, and the net solid volume as the
compacted (Fill) or undisturbed (Cut) volume. LooseVolume and Weight stay
unmapped because they need soil bulking and density factors absent from
geometry. Bring IfcEarthworksCut to parity with the Blender engine and wire
IfcReinforcedSoil on both engines.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
assign_cost_item_quantity skipped every IfcSpatialElement, which also
swallowed IfcSpace. Spaces are legitimate quantifiable objects, so their
Qto_SpaceBaseQuantities (for example GrossFloorArea) were never picked up
and count based cost items fell back to 0. Keep skipping spatial
containers (site, building, storey) but allow IfcSpace.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The headless "IfcOpenShell" calculator had all Qto_SpaceBaseQuantities
formulas set to null for IfcSpace in both IFC4QtoBaseQuantities.json and
IFC4X3QtoBaseQuantities.json, so qto.py's `if not formula: continue`
skipped every quantity, no geometry task was queued, and spaces never
appeared in results (elements_quantified: 0). The Blender calculator
already computes these; they were just never ported to the
ifcopenshell.util.shape-backed calculator.
Map the eight computable quantities to existing util.shape functions,
mirroring the Blender calculator semantics (no new shape.py code):
GrossFloorArea=gross_get_footprint_area, NetFloorArea=net_get_footprint_area,
GrossCeilingArea=gross_get_top_area, NetCeilingArea=net_get_top_area,
GrossPerimeter=gross_get_footprint_perimeter, GrossVolume=gross_get_volume,
NetVolume=net_get_volume, Height=net_get_z.
Left null (matching the Blender ruleset, not guessed): GrossWallArea,
NetWallArea, NetPerimeter (Blender stub), and FinishFloor/CeilingHeight
(Blender derives these from sibling IfcCovering decomposition geometry,
which this per-element calculator architecture can't reach).
Verified on IFC4 (4x3 space extruded 2.5m): before -> {} / elements_quantified 0;
after -> GrossFloorArea 12, GrossPerimeter 14, Height 2.5, GrossVolume 30,
etc. - all exact matches to the extrusion. IFC4X3 formulas are identical
and the formula->function resolution is schema-agnostic.
Scope: fixes the IfcSpace case (the issue title). The 12 other all-null
classes noted in the issue (IfcDoor, IfcSite, IfcRailing, ...) are left as
follow-up.
This change was made with the assistance of an AI tool.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The ifc5d IfcOpenShell (geometry-based) Qto engine computed
Qto_CoveringBaseQuantities using axis-agnostic heuristics:
- GrossArea/NetArea: gross_get_max_side_area / net_get_max_side_area,
the largest of the X/Y/Z projected side areas.
- Width: gross_get_min_xyz, the smallest of the X/Y/Z dimensions.
The Blender Qto engine instead already used
EPset_Parametric.LayerSetDirection (AXIS2 for wall-like coverings,
AXIS3 for floor/ceiling-like coverings) to pick the correct axis via
get_covering_gross_area/get_covering_net_area/get_covering_width in
bonsai/bim/module/qto/calculator.py.
For any covering whose length isn't the largest dimension (e.g. a
short wall-covering strip, or a small covering patch), the two
engines' heuristics can pick different faces/axes entirely, giving
different Width/Area values for the same element - this is what was
reported in #6728.
Fix: give the IfcOpenShell engine the same layer-set-direction
awareness. Added IfcOpenShell.get_covering_parametric_axis/
get_covering_area/get_covering_width (dispatched as internal
functions, like the existing get_weight/get_segment_length), and
wired gross_get_covering_area/net_get_covering_area/
gross_get_covering_width into the IfcCovering rules in
IFC4QtoBaseQuantities.json and IFC4X3QtoBaseQuantities.json.
The AXIS2 area/width formulas (get_side_area, net_get_y) intentionally
match the simpler formulas already used for Qto_WallBaseQuantities in
this same rule set (net_get_side_area/net_get_y), rather than
replicating the Blender engine's more elaborate get_lateral_area/
get_width (min(X,Y)) helpers, consistent with how the two engines
already diverge for regular walls without being considered a bug.
Verified with a standalone script driving ifc5d.qto.IfcOpenShell
directly against synthetic AXIS2/AXIS3 IfcCovering geometry: for
typical proportions old and new formulas agree, and for
disproportionate coverings (thin dimension not the smallest/largest)
the old formulas picked the wrong axis while the new ones correctly
track the covering's LayerSetDirection, matching the Blender engine.
Did not verify through the full Blender/Bonsai UI, as it would have
required registering the addon in the machine's shared Blender
profile, which is unsafe while other agents may have it loaded.
Generated with the assistance of an AI coding tool.
copy_cost_item appends the copy to the inverse relationships of the
original cost item, which for a root cost item includes the source
schedule's IfcRelAssignsToControl. copy_cost_schedule then assigned that
same cost item to the new schedule as well, so the copies showed up in
both schedules and deleting them from one removed them from the other.
Unassign the copy from the source schedule before assigning it to the
new one.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Fixes#4443. The Wall/Slab/other authoring tools (BimTool subclasses)
already bind Shift+Q to bim.perform_quantity_take_off via hotkey_S_Q,
but the Spatial tool has its own separate keymap/operator
(bim.spatial_hotkey) that never registered a Q entry, forcing users to
switch tools just to (re)calculate quantities for a selected element.
Added the same Shift+Q keymap entry and a matching hotkey_S_Q handler
to the Spatial tool, mirroring BimTool's existing behavior exactly
(including the same selected-objects guard).
The other part of the request, a bulk "calculate all quantities"
entry point, already exists today: bim.perform_quantity_take_off
computes quantities for every IfcElement when no objects are
selected, exposed via the Scene > Quantity Take-off panel regardless
of which workspace tool is active, so no change was needed there.
AI-generated, reviewed and tested by BIMvoice.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
can_nest() only permitted IfcElement-to-IfcElement pairs, so nesting
two IfcElementType objects (e.g. an IfcElementAssemblyType nesting a
component IfcDoorType) was silently rejected. IfcRelNests.RelatingObject/
RelatedObjects are typed as the general IfcObjectDefinition in the
schema, so type-to-type nesting is schema legal, IfcOpenShell's core
nest.assign_object API already handles it generically, and the Nest
UI panel is driven purely by ifcopenshell.util.element.get_nest/
get_components (IFC data queries, not Blender collection structure),
so once the relationship exists it displays correctly with no other
changes needed.
Extended is_compatible_class to also accept a same-kind IfcTypeProduct
pair. Mixing an occurrence element with a type is intentionally still
rejected, that isn't a real modeling pattern.
Verified live in headless Blender: type-to-type nesting now creates
a real IfcRelNests and the Nest panel's own data functions reflect
it correctly; mixing an occurrence with a type is still rejected;
existing element-to-element nesting is unaffected.
Generated with the assistance of an AI coding tool.
Root cause: the IfcOpenShell-geometry-engine calculator ruleset
(IFC4QtoBaseQuantities.json and IFC4X3QtoBaseQuantities.json) left
IfcWall's GrossFootprintArea/NetFootprintArea mapped to null, so
these two quantities were silently omitted from Qto_WallBaseQuantities
whenever that ruleset was used. The generic gross_get_footprint_area
and net_get_footprint_area formulas already exist and are already
wired up for IfcSlab in the same files, so this was a missing mapping,
not a missing implementation.
Fixes#7029.
Generated with the assistance of an AI coding tool.
Error was:
```
configure: error: could not find a working compiler, see config.log for details
```
config.log:
```
conftest.c: In function 'f':
conftest.c:12:48: error: too many arguments to function 'g'; expected 0, have 6
12 | for(i=0;i<1;i++){if(e(got,got,9,d[i].n)==0)h();g(i,d[i].src,d[i].n,got,d[i].want,9);if(d[i].n)h();}}
| ^ ~
```
Petru Conduraru