Object Builder utilities
This small addon aims to bring some of the useful utility functions of the Arma 3 Object Builder to Blender, in order to complement the ArmaToolbox addon by Alwarren.
Functions
The features only work on single selected mesh entites, and are available from both Edit and Object modes of the viewport.
TOPOLOGY
Find Non-Closed
Find edges that are boundary to a face, and do not have a second face connecting, as well as loose edges without any faces connected.
Find Components
The function loops through all disconnected mesh sections in the selected object, and generates ComponentXX format vertex groups.
The function is intended to be used to create the component selections for Geometry type LODs
Note
The disconnected pieces are not checked whether or not they are valid pieces of geometry, or just loose wire edges. Make sure to only use the function on clean geometry!
CONVEXITY
Find Non-Convexities
Mark edges that join two faces in a non-convex way (the interior angle between the faces is greater than 180 degrees).
Note
Due to the numerical errors in nearly-flat connections inherent to floating point calculations, the convexity check is only done above a built-in threshold which may differ from Object Builder. Always run the function in Object Builder as well before packing the PBOs to double check!
Convex Hull
Calculates convex hull for the whole selected object.
Component Convex Hull
This function is a combination of the Find components and Convex Hull functions.
The function loops through all disconnected mesh pieces, performs a convex hull operation on them, and generates ComponentXX format vertex groups.
Environment
- Python
- Blender Python API
Requirements
- Blender (v2.83.0 or higher)