Re: [Visualpython-users] obtaining pos in world co-ordinates of a frame obj

[Jonathan B. <jdb...@un...>]

Bruce Sherwood wrote:

> I've added Jonathan's routine to the on-line documentation for "frame" 
> and also updated the Doc zip file that can be downloaded. Thanks, 
> Jonathan.
>
> This does leave open the question however as to whether there ought 
> not be a method in Visual for resolving pos and axis information. In 
> particular, I believe that even Jonathan's routine isn't really 
> complete if this frame is inside another frame: one should really 
> recurse up the enclosing frames.
>
> Bruce Sherwood
>
How about a pair of  member functions of the frame object with the 
following Python signatures:

def world_space_project(self, local):
    """Returns the vector local in the global coordinate system, 
following transforms recursively within nested frames."""

def parent_space_project(self, local):
    """Returns the vector local in the coordinate system of the parent.  
Iff self.frame==None, this is the same as world_space_project()."""

Comments?  Questions?
-Jonathan Brandmeyer