Arch objects can now be based on a Part Compound and will take
its DiffuseColor property. Arch objects that are clones of
such objects will also copy that property.
* Added utility to make non-parametric Arch component
* Ability for all Arch components to be a clone of another Arch component of same type
* Modified the Draft Clone tool to produce Arch Clones if applicable
* Fixed Arch Roofs so they can be based on a solid shape like other Arch objects
* Ability to change the Root element to be imported in IFC preferences
* Ability to import IFC files also as compounds, Part shapes or non-parametric Arch objects
* Added an "only" parameter to importIFC.open() to import only a certain object ID.
* Ability to read colors (IfcSurfaceStyle) from IFC objects
* Removed redundant code in Arch objects
* Supports wandererfan's Units code in Draft module
* Cleanup of the IFC exporter
* Better support of extruded profiles in IFC export
+ Walls can now be capped by roofs, by subtracting a roof from them
+ Walls and Structs with height = 0 take height from their parent floor
+ Changing the placement of a floor changes all the placements of its children
Arch objects can now have Fixtures, which is a mesh or part attached to
them, but that doesn't modify the geometry of the base object. They are
normally hidden, except when the new Display Mode "Detailed" is used.
Fixtures can be added to any Arch object using the new Arch_Fixture command
and removed with the standard Arch_Remove command.
Fixtures are useful for small unimportant details like window latches or hinges,
that should stay hidden most of the time.
+ Further work on snap tracking dims
+ Better snap for structures
+ Corrected initial temp shape of structures
+ Added a box with wall length (still readonly)
