Textile class example

This example shows how to use the Textile class in PolyTex package. It is designed to handle the parametrization and geometrical analysis of a fiber Textile. A Tow instance is created by passing the point cloud of a tow, which consists only the points on the Textile surface, to the constructor.

import numpy as np
import polytex as ptx

Create a textile object

1. create a textile object

2. add tows to the textile object

3. add groups to the textile object

4. remove tows from the textile object. The same tows in self.groups will be removed automatically.

textile = ptx.Textile(name="TG96N_Vf57")
print(textile.name)

path = "./sample_data/tow/"
files = ptx.filenames(path, ".tow")

for file in files:
    print(path + file)
    tow = ptx.pk_load(path + file)
    textile.add_tow(tow)

print(textile.items)

textile.remove("binder_104")  # remove a tow from the textile object
print(textile.items)

weft_128 = textile["weft_128"]
textile.add_group(name="weft", tow=weft_128)  # add an existing tow to the group
print(textile.groups)

# add an empty group
textile.add_group(name="binder")
print(textile.groups)

# add a tow to the group
textile.add_group(name="binder", tow=textile['binder_105'])  # add a new tow to the group
print(textile.groups)

Create a background mesh for the textile domain

1. define the bounding box of the textile domain

2. define the voxel size

3. generate the background mesh with textile.mesh()

bbox = np.array((0.6, 12, 1.07, 14.19, 0.15, 5.5))
voxel_size = [0.132, 0.132, 0.066]

textile.meshing(bbox, voxel_size=voxel_size, show=True,
                labeling=True, surface_mesh="./stl/", verbose=False)