Basically there are 3 methods to define the transition angle (https://i.imgur.com/AtCIJty.png). Before we supported only the second method, now we support 1 and 3 too.
- support transitions from and to circle profiles
- reworked transition length algorithm now it should be more accurate
- added support for creating transitions between profiles that are parallel but not collinear
Added simple operator to add transition between two mep segments (now only rectangular collinear segments are supported).
It also reuses the transition type that was previously used to connect segments of the same type.
Demonstration - https://imgur.com/a/c1AOxj1
Now blender curves segments saved in IfcIndexedPolyCurves instead of creating individual polygons.
Also changed ShapeBuilder.polyline - now it will try to store points in IfcLineIndex where it's possible (previously it was storing just 2).
Error occured because ShapeBuilder was assigning "Curve2D" representation type for elevation view curves when the correct type is "Curve3D".
It use to occur for both doors and windows created with ifc modifier.
```
Validation error text:
2023-04-03:18:21:28,879 ERROR [rule_executor.py:154] On instance:
#135=IfcShapeRepresentation(#21,'Profile','Curve2D',(#134))
Rule IfcShapeRepresentation_CorrectItemsForType:
(IfcShapeRepresentationTypes(self.RepresentationType,self.Items))
Violated by:
False
+ where False = IfcShapeRepresentationTypes('Curve2D', (#134=IfcIndexedPolyCurve(#133,(IfcLineIndex((1,2)),IfcLineIndex((2,3)),IfcLineIndex((3,4)),IfcLineIndex((4,1))),$),))
+ where 'Curve2D' = #135=IfcShapeRepresentation(#21,'Profile','Curve2D',(#134)).RepresentationType
+ and (#134=IfcIndexedPolyCurve(#133,(IfcLineIndex((1,2)),IfcLineIndex((2,3)),IfcLineIndex((3,4)),IfcLineIndex((4,1))),$),) = #135=IfcShapeRepresentation(#21,'Profile','Curve2D',(#134)).Items
```