Structure Explorer

Select Similar Polygons

Select Polys By Angle For Softimage 2015 SP1

Select Poly By Angle for Softimage 2015

Mitsuba Renderer for Softimage 2015

Headus UV Tool

Align UV Tool

How to use:

1. Select an object.
2. In Texture Editor Menu -> Tools -> Align Horizontal or Align Vertical.
3. Switch On the button Island in TE and select an UV-island. Or can don't do it - just click RMB(right button mouse) to skip this step.
4. There is you should select an UV-edge. Switch Off the button Island. Select an edge.
5. Your texture projection or the island is rotated.