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Welcome to the blenderPolygons wiki!
Detect polygons from unordered splines like in architectural 2d drawings within a single click. Fix precision issues filling small gaps between lines encountred when importing. Once detected, you are able to pick polygons with a select tool and extract curves from your selection.
Cleaning dxf files or redrawing walls in worst cases is often a painfull task. This script does automagically fix most issues encountred in such cases (not well formed lines), and allow you to simply pick needed polygons and get a clean curve of polygons boundarys.
Under the hood, i do write from scratch the cleaning code and intersection detection to handle precision and optimization issuees occuring on medium data sets using a spacial tree (rtree). Polygonization is only a wrapper arround shapely as it is realy powerfull and quick.
In order to work this script depends on
- shapely
- rtree
both available as python wheels.
The most easiest way to install shapely and rtree Python Binding is to use the packages available here rtree shapely. Choose the one that match the version of Python bundle with Blender eg: cp35-cp35m versions for blender 2.78.
You need pip to install *.whl package files. The Python installation bundle with Blender do not include pip but include distutils. So it's possible to install pip with a standard console:
blender_install_folder\2.7x\python\bin\python.exe -m ensurepip
And then install the wheel:
blender_install_folder\2.7x\python\bin\python.exe -m pip install xxx-cp35-cm35m-win_amd64.whl
To test the install open Blender Python console and type:
from shapely import geometry
from rtree import index
Setup the plugin as usual
Find it under view3d -> Tools -> Polgons
Select one or many curves, pick "Detect" Use "Select / union" and follow on screen instructions.
Should you find an error or want to report success/issues ? Issues Tracker