Render point cloud in PythonOCC WebGL

core_webgl_threejs_pcl.py

#! /usr/bin/env python

from OCC.Display.WebGl.flask_server import *

import random
import time
import os


@app.route("/")
def show_pcl():
    # remove shapes from previous (avoid duplicate shape after F5 refresh)
    my_ren._3js_shapes={}
    my_ren._3js_edges={}
    my_ren._3js_vertex={}

    points_3d = []

    ## Uncomment to load bunny.pcd
    #pcd_file_name = os.path.join('.', 'bunny.pcd')
    #pcd_file = open(pcd_file_name, 'r').readlines()[11:]
    #print("Number of vertices: ", len(pcd_file))
    #for line in pcd_file:
    #    x, y, z = map(float, line.split())
    #    points_3d.append(gp_Pnt(x, y, z))

    n_points = 1500
    for idx in range(n_points):
        x = random.uniform(-250, 250)
        y = random.uniform(-250, 250)
        z = random.uniform(-250, 250)
        pnt = gp_Pnt(x,y,z)
        points_3d.append(pnt)

    init_time = time.time()
    # display point cloud for bunny.pcd, use smaller point size, like 0.005. For random point, use 15
    my_ren.ConvertShape(points_3d, export_edges=False, color=(0.0, 0.0, 0.0), point_size=15)
    final_time = time.time()
    print("\nTotal meshing time : ", final_time - init_time)

    return render_template('index.html', occ_version=OCC_VERSION, threejs_version=THREEJS_RELEASE,
                           render_cfg=render_cfg, occ_shapes=my_ren._3js_shapes, occ_edges=my_ren._3js_edges,
                           occ_vertex=my_ren._3js_vertex)

if __name__ == "__main__":
    app.run(host='localhost', port=8080, debug=True)