Do save change original mesh points?

[thiagomarinho1984]

Hello gents. First of all thank you so much for this package, its very useful.

I am running a script that loads a mesh, rotate it and save it. For some reason the new file size is much smaller than the original (~70% of original) and the triangles are being reconstructed. Is that the expected behavior?

I am wondering if its possible to do this process maintaining the original triangles by just transforming the points coordinates.

The following is a snip of the code with the function optional inputs:

`for i in range(0,meshes.len()):

stlMesh=mesh.Mesh.from_file(meshes[i])

print(meshes[i])

# Rotate about Z

stlMesh.rotate([0.0, 0.0, 1.0], math.radians(180-yaw))

# Rotate about Y

stlMesh.rotate([1.0 * math.sin(math.radians(-yaw)), 1.0 * math.cos(math.radians(-yaw)), 0],math.radians(pitch-90))

# Save

name = meshes[i].rsplit(r'/',1)[-1]

print(name)

stlMesh.save(basedir+case+r'/constant/triSurface/'+name, mode=stl.Mode.ASCII,update_normals=True)`

[Uvar]

In principle, unless you explicitly define that empty/duplicate polygons should be dropped at loading time, there fundamentally should not be any changes to your data shape. Therefore I'm tempted to ask you to take a detailed look at the files themselves:

1. do they contain extra information outside the STL format? 2a. does each file have multiple STL definitions or 2b. lots of empty carriage returns?

[stale[bot]]

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