Point_Cloud_To_Mesh.dyn (57.5 KB) Hi I need to share with you how to convert point cloud to mesh by using use python 3 and “Open 3d” Package in dynamo 1- load Open 3d packedge in to your dynamo 2- voxel_down_sampl downpcd=pcd.voxel_down_sample(voxel_size=0.05) 3- used dbscan to cluster point cloud and remove the noise point labels1 = np.array(downpcd.cluster_dbscan(eps=0.05, min_points=10)) 4- create mesh TriangleMesh by using point cloud ball pivoting algorithm o3d.geometry.TriangleMesh.create_from_point_cloud_ball_pivoting(rest,o3d.utility.DoubleVector([1radius, radius2])) 5- creat dynamo mesh and convert it to revit element [image] [image] [image] http://www.open3d.org/ """ Create by Ramiz Mohareb 13-12-2021 enramiz@yahoo.com this code use Open 3d Pack. http://www.open3d.org/ Important! This code will only work with Dynamo versions that are able to run cPython3 and have the following ad [Point_Cloud_To_Mesh.dyn|attachment](upload://jH5GTaDZtlEoPjKCGgGjD42Bpyj.dyn) (57.5 KB) ditional python packages installed. Packages required: Open3d numpy """ import random import numpy as np import clr import open3d #libraries used import numpy as np import open3d as o3d clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * import matplotlib.pyplot as plt filepath=IN[0] import numpy as np import open3d as o3d filepath=IN[0] segment_models={} segments={} inliers={} inlier_cloud={} Outt=[] Outt2=[] Outt3=[] dec_meshL=[] max_plane_idx=1 point_cloud= np.loadtxt(filepath,skiprows=1) #Format to open3d usable objects pcd = o3d.geometry.PointCloud() pcd.points = o3d.utility.Vector3dVector(point_cloud[:,:3]) pcd.colors = o3d.utility.Vector3dVector(point_cloud[:,3:6]/255) pcd.normals = o3d.utility.Vector3dVector(point_cloud[:,6:9]) downpcd=pcd.voxel_down_sample(voxel_size=0.1) labels1 = np.array(downpcd.cluster_dbscan(eps=0.05, min_points=10)) candidates1=[len(np.where(labels1==j)[0]) for j in np.unique(labels1)] best_candidate1=int(np.unique(labels1)[np.where(candidates1== np.max(candidates1))[0]]) rest=downpcd.select_by_index(list(np.where(labels1== best_candidate1)[0])) distances = rest.compute_nearest_neighbor_distance() avg_dist = np.mean(distances) radius = 1 * avg_dist #computing the mehs bpa_mesh = o3d.geometry.TriangleMesh.create_from_point_cloud_ball_pivoting(rest,o3d.utility.DoubleVector([1*radius, radius*2])) #dec_mesh1 = bpa_mesh.filter_smooth_simple(number_of_iterations=1) dec_mesh1 = bpa_mesh.filter_smooth_taubin(number_of_iterations=10) dec_mesh3=dec_mesh1 dec_mesh3.remove_degenerate_triangles() dec_mesh3.remove_duplicated_triangles() dec_mesh3.remove_duplicated_vertices() dec_mesh3.remove_non_manifold_edges() # Outt.append(np.asarray(segments[i].Points).tolist()) Outt2.append(np.asarray(dec_mesh3.triangles).tolist()) Outt3.append(np.asarray(dec_mesh3.vertices).tolist()) #o3d.visualization.draw_geometries([segments[i] for i in range(max_plane_idx)]+[rest]) # OUT = Outt2,Outt3

Nice work @RMohareb :+1: Open3D has a fantastic set of tools, and its great we can now use them with the new Python version included with Dynamo.

Hi @Ewan_Opie I have been waiting for your comment :wink: You are right, Python 3 give us a powerful path to create new generation of dynamo tools. As in your new nodes or in the above example we can create that by load a powerful Python pakedge. I expect more new dynamo packages generation for the in the next a few month

Hi @RMohareb , I tried running your code, however I don’t understand how to install Open3D or numpy, do I have to install these packages through Dynamo? (I can’t find them in the Package Searcher). Also what version of Revit and Dynamo are you using? Kind regards, Daan

Hi @Daan First this code must be run at python 3 thats mean you need revit 2022 with dynamo suport Python 3. to install Open3d, numpy or any pakedge suport by python 3 please folows the below link [image] to install Open3d: use CMD and write “pip instrall Open3d” [image]

Thanks a lot for the quick reply! I’ll get back to you if i finish the toturial

@Daan you are welcome also this link maybe help you [image] How to install Python modules in Dynamo Core Runtime 2.8.0? Developers Hi, a workaround to avoid changing the sys.path for each version of Dynamo wink [image] import sys import clr import System import re clr.AddReference('ProtoGeometry') from Autodesk.DesignScript.Geometry import * reDir = System.IO.DirectoryInfo(re.__file__) path_py3_lib = reDir.Parent.Parent.FullName sys.path.append(path_py3_lib + r'\Lib\site-packages') OUT = path_py3_lib It’s possible to install automatically pip at initialization Python3 engine for next versions of Dynamo ?

Would you be kind of sharing with us the textFile as I am a bit confused with the normals columns as It seems to be an input that must be passed through the BPA algorithm, thanks in advance

Hi @MiguelGT17 if you use PTS format the file already include the normal vector as shown in the below pic. if your file not include the normal vector you can use Open3d to estimate it. http://www.open3d.org/docs/release/tutorial/geometry/pointcloud.html#Visualize-point-cloud [TPS] [image]

Convert Point cloud to revit element mesh by using python 3 and Open3d

MiguelGT17 March 2, 2022, 3:11pm 11

thanks for answer me and for the insights, appreciate it RMohareb!
Cheers

Import mesh

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Convert Point cloud to revit element mesh by using python 3 and Open3d

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