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Polylines (consisting of an array of points) and polyfaces (consisting of an array of rectangular faces) can be imported from text files. Select either Insert> Polyline or Insert> Polyface from the main menu and then open the desire text file ("txt" file extension).  After a polyline or polyface is imported, the coordinates and other attributes are stored in the XML or VIZ extension file rather than the original txt file.

 

Polyline

 

The first line of the polyline file contains the number of points. The remainder of the file contains the point coordinates as triplets of X, Y and Z.  The following are records from a sample polyline file.

 

6

0.0 0.0 0.0

0.0 1.0 0.0

1.0 1.0 0.0

1.0 0.0 0.0

0.0 1.0 0.5

1.0 1.0 0.5

 

Polyface

 

The first line of the polyface file contains the number of nodes and the number of defined faces. The node coordinates are then listed as triplets of X, Y and Z, followed by the four individual face corner numbers and the color index for each face. In the text below from a polyface data file, six corner points have been defined and two faces. The first face corner points are 1, 2, 3 and 4 the second face corner points are 5, 2, 3 and 6. The color index for both faces is 1.

 

6 2

0.0 0.0 0.0

0.0 1.0 0.0

1.0 1.0 0.0

1.0 0.0 0.0

0.0 1.0 0.5

1.0 1.0 0.5

1 2 3 4 1

5 2 3 6 1