Better algorithm for creating pitched roof (probably)?

[ebrahim raeyat]

maybe we can use polygonal_surface_reconstruction in CGAL, but i am not a fan of c++:

https://doc.cgal.org/latest/Polygonal_s ... index.html

polyfit_pipeline.png (142.3 KiB) Viewed 2831 times

[ebrahim raeyat]

I added an edges_height parameter for each edge of base roof:

roof.gif (806.26 KiB) Viewed 2770 times

[ebrahim raeyat]

There is a library in python named Pyskeleton that can produce (?) nonuniform angle roof:

It works with python2 and have some bugs. I changed the code to work with python3 and remove some of them, but it seems it didn't create the skeleton of the roof correctly:

pyskeleton2.png (18.06 KiB) Viewed 2726 times

below is the same polygon in FreeCAD with my WB:

pyskeleton_FreeCAD.png (128.13 KiB) Viewed 2726 times

pyskeleton_FreeCAD_3D.png (30.2 KiB) Viewed 2726 times

Pyskeleton with different angle(speed), red edge that is half an other edges:

pyskeleton2_weight.png (18.01 KiB) Viewed 2726 times

I think we can work on this library and correcting the problems. thanks

[ebrahim raeyat]

This library works for curved edges:

bpypolyskel

logo.jpg (247.24 KiB) Viewed 2678 times

[bitacovir]

Good job! keep working!

[ebrahim raeyat]

I implemented gable in roof. My goal is to user click on any edge of the sketch and then convert it to gable line, then I change the skeleton of the roof:
Before convert to Gable:

gable1.png (7.99 KiB) Viewed 2518 times

After convert to gable:

gable2.jpeg (47.06 KiB) Viewed 2518 times

My question:

How can I save the edges that user select? I searched and found the object has "App::PropertyVectorList" but for edges I can't find appropriate property. I wanted to set it in a property, because the user can modify the base shape and the geometry of the sketch maybe change.

[ebrahim raeyat]

Until that time, I set it in "App::PropertyIntegerList" property with 0 and 1, 1 denote that the edge is Gable:

gable3.png (14.47 KiB) Viewed 2505 times

[ebrahim raeyat]

I added angles property to the roof object. Now edges with 90-degree angle takes as gable and negative angle denote for negative slope:

negative_roof.png (10.41 KiB) Viewed 2472 times

[Kunda1]

ping

An aside, just wanted to make you aware of https://github.com/prochitecture/bpypolyskel
Context: https://twitter.com/BlenderBIM/status/1 ... 2951173120

[bitacovir]

An aside, just wanted to make you aware of https://github.com/prochitecture/bpypolyskel
Context: https://twitter.com/BlenderBIM/status/1 ... 2951173120

It was already mentioned in the thread...