Subdivide

Subdivide subdivides the selected TIN item's faces using smooth interpolation.

Click the Subdivide icon or right-click inside the map window and select Subdivide.

A new node is added into each face of the original TIN item.

The height of each new node is calculated using the de Casteljuu algorithm on each original face.

This matches the TIN nodes and the average TIN normal at each node.

This command is useful for making TIN items appear smoother, prior to exporting to another GIS or CAD system which does not support smooth shading.