Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

mesh_explode command

See original GitHub issue

Describe the bug mesh_explode in compas seems that it doesnt behave as rhino explode command when exploding a closed mesh (boxy sort of typology). mesh is exported as stl from rhino (i tried also to export it as obj).

I am not sure if that is a bug or a feature request.

To Reproduce Steps to reproduce the behavior:

import os
from compas.datastructures import Mesh, mesh_explode

HERE = os.path.dirname(__file__)
file_mesh = os.path.join(HERE, 'boxyMesh.stl')

mesh = Mesh.from_stl(file_mesh) 
mesh_parts = mesh_explode(mesh)
print(len(mesh_parts))

Expected behavior in Rhino it returns 8 meshes and in compas it returns a list of only 1 element.

Screenshots

Issue Analytics

State:
Created 2 years ago
Comments:6 (6 by maintainers)

Top GitHub Comments

1reaction

brgcodecommented, May 6, 2021

Rhino explodes a mesh along components separated by naked edges (i.e. into disconnected components).

the problem is that the STL reader automatically merges identical vertices. this means that the mesh no longer has disconnected components en therefore cannot be exploded…

1reaction

brgcodecommented, May 6, 2021

haha

Top Results From Across the Web

Explode | Rhino 3-D modeling

Mesh parts and mesh faces based on unwelded edges. If a mesh is completely unwelded, then it will explode to its individual faces....

Mesh Explode - MeshEdit - Component for Grasshopper

Decompose a mesh into its faces.

Exploding Meshes | Babylon.js Documentation

MeshExploder explode function takes a number parameter to multiply the distance of explosion. Negative numbers implode. Zero resets meshes to original ...

Explode mesh in Rhinoceros - Guillaume Meunier

It's impossible with the _explode command or ungroup here is the solution : First _unweld with a 0 angle. then you can _explode....

Explode Mesh Tool - YouTube

When working with complex mesh models, it may be difficult to work on a specific part or area. The Explode Mesh function allows...