Ask help for the Local coordinate systems

How can I create a local coordinate system for some faces or some lines? For example I want to set up a local coordinate system on a box and after the coordinate system has been setted up, the following location information is based on that, but not the default one. What should I do if I want to achieve this? Can someone give me a hint or some kinds of advices please?



billyyuzhihua's picture

Maybe you can try in another way. Every single operation is based on the default system coordinate, and to set some shapes with a TopLoc_Location, like
TopLoc_Location Loc(trsf);
Then the shape1, shape2,...belong to the some local coordinate system. But I don't know how to get the coordinate for every shape under the local coordinate system.