| 
    Open CASCADE Technology 7.8.2.dev
    
   | 
 
Data Structures | |
| class | AIS_PlaneTrihedron | 
| To construct a selectable 2d axis system in a 3d drawing. This can be placed anywhere in the 3d system, and provides a coordinate system for drawing curves and shapes in a plane. There are 3 selection modes:  More... | |