Build >> Triangulate >> Surface >> 2D

• Build >> Triangulate >> Surface >> 2D command creates faces by triangulating a shell.

• Build >> Triangulate >> Surface >> 2D command projects vertices in three dimensional space onto two dimensional plane and then, apply Delaunay Triangulation process to projected vertices. Thus, for proper triangulation, all the vertices must be projected onto XY plane without overlap.

• Build >> Triangulate >> Surface >> 2D command can be applied only to shells without faces.

Step   

Execute Build >> Triangulate >> Surface >> 2D command as follows:

1. Select Build >> Triangulate >> Surface >> 2D command from the menu or click the corresponding icon from the Build toolbar.

2. Select a shell to be triangulated. ( See Shell selection ) and click Done on the right mouse shortcut menu.

3. The following dialog box appears.

The normal vectors of triangulated faces may change depending on the Projection Direction. In Projection Direction field, choose -Z option if the selected shell is located in front of the XY plane. Otherwise choose +Z option. To triangulate the selected shell so that its points are projected onto the current view plane, instead of XY plane, Current View Point option must be selected.

Maximum edge length is larger than field specifies a value. If the length of the longest edge of a face is bigger than this value, it is determined to be removed.

Area is larger than field specifies a value. If a face has area bigger than this value, it will be removed.

Max / Min edge length ratio is larger than field specifies a value. If the ratio of the longest edge to the shortest edge of a face is bigger than this value, it is determined to be removed.

Facing angle is larger than field specifies an angle  value. Faces with angle between the scanning direction and its face normal bigger than this value will be deleted.

Any face satisfying one of the options in Delete faces field is deleted

4. Press OK button to complete this command.

Note  

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

• If the shell selected is read from a PTS format file and is of MEASURED type, triangulation process is performed in its local coordinate system. That is, vertices are projected onto the local XY plane and triangulated. ( See File )