meshlab_resample.py

#@title <b>MeshLab Resampler</b>
#@markdown <ol><li>Set these options:</li></ol>

# https://pymeshlab.readthedocs.io/en/latest/
# https://pymeshlab.readthedocs.io/en/latest/filter_list.html
# https://pymeshlab.readthedocs.io/en/latest/io_format_list.html

!pip install pymeshlab

import pymeshlab as ml
from google.colab import files
from pathlib import Path

# * * * * * * * * * *
#@markdown <ul><li><i>This will be your approximate percentage reduction in file size.</i></li></ul>
samplePercentage = 0.05    #@param
#@markdown <ul><li><i>Common file format options are ply, obj, xyz.</i></li></ul>
outputFormat = "ply"       #@param {type:"string"}
# * * * * * * * * * *

uploadList = files.upload()

for inputFileName in uploadList:
  outputFileName = Path(inputFileName).stem + "_resampled." + outputFormat.lower()
  
  ms = ml.MeshSet()
  ms.load_new_mesh(inputFileName)
  
  newSampleNum = int(ms.current_mesh().vertex_number() * samplePercentage)
  if (newSampleNum < 1):
    newSampleNum = 1
  
  ms.apply_filter("poisson_disk_sampling", samplenum=newSampleNum, subsample=True)
  ms.save_current_mesh(outputFileName)
  
  files.download(outputFileName)

#@markdown <ol start=2><li>Click <b>Play</b> to run the script.</li><li>Click the <b>Choose</b> button when it appears, and select files to upload.</li><li>Click <b>Allow</b> if prompted, to permit downloading multiple files.</li><li>The files will download automatically when processing is complete.</li></ol>
#@markdown <br>
#@markdown &mdash; P.S. Double-click this panel to see the Python code.