Build >> Triangulate >> Surface >> 3D

• Build >> Triangulate >> Surface >> 3D command converts a full 3D point cloud set to a polygonal model

• Build >> Triangulate >> Surface >> 3D command can be applied only to shells without faces.

Step   

Execute Build >> Triangulate >> Surface >> 3D command as follows:

1. Select Build >> Triangulate >> Surface >> 3D command from the menu or click the corresponding icon from the Build toolbar.

2. Select a shell to be triangulated. ( See Shell selection )

3. The following dialog box appears.

Use the default Parameter Decision option, Automatic Decision, in case the point cloud is uniform as shown in the below left figure or decimated set as shown in the below right figure. The distances between points are calculated automatically.

 

Check Manual Decision option to triangulate non-uniform point cloud as shown in the below figure, and then edit the Local Distance of Points.



To change the local distance, click a specific number and type in a number whose value is in the middle of its upper and lower numbers.

To ignore a specific number, type in zero to replace the original number.
 
If the typed value isn't a number whose value is in the middle of its upper and lower numbers, the following message appears and the new number is ignored.


Check Distant Scan-Line Data Set option in Optional Conditions field to triangulate point cloud shown in the below figure.

Criteria Angle specifies the smallest angle between normal vectors of polygon meshes to be generated.  Polygon meshes with angle between its normal and adjacent meshes' normal is smaller than the specified value are deleted.

Preview button enables a user to see shaded polygons for a selected region in advance. When this button is pushed, the following message appears.


Click the right mouse button, the following popup menu appears.



Push Select Vertices button, then select region of vertices to be triangulated, and push the Preview button.

4. Press OK button. Then the following message appears.

Press Yes button if the normal of model looks correct, or press No button if not.

Note  

• This menu is disabled if there is no faceless shell.

• If a shell has too many vertices whose coordinate values are same, the following messages appear.

Click Yes to execute Build >> Filter >> Redundancy command, or click No to continue this command

• If a shell still has vertices whose coordinate values are same, the following message appears.

Click Yes to execute Build >> Filter >> Redundancy command, or click No to continue this command