Re: [Visualpython-users] Keeping labels in one place

[Robert F. <rf...@rf...>]

Yes, C Anthony is correct. I want it to stay at an absolute pixel coordinate (2-D) in the window. Completely unaffected by any rotations or zooms.  The existing objects all move with the frame. 

I had thought about the constantly-reposition option but was hoping there was something easier.  This seems like it would be a common desire. For example, to put a title or timestamp or something in the display window.

I'll try those suggestions and see if I can get it to work

BTW, my application is orbit visualization of spacecraft. I just want the date and time to stay in one place.

Thanks.  

On Jul 17, 2010, at 11:20 AM, C Anthony Risinger <an...@ex...> wrote:

> 
> 
> On Sat, Jul 17, 2010 at 1:07 PM, Bruce Sherwood <bas...@nc...> wrote:
>> The current version of VPython (5.32) offers a text object as well as a
>> label object. The label object always faces the viewer, independent of
>> rotation, whereas the (new) text object is extruded text that behaves like
>> all other objects. Seems like one of these two should do what you want. The
>> text object can have zero thickness.
>> I'm not sure what you mean by a "time" display, but presumably you know
>> about the graphing option.
>> Bruce Sherwood
> 
> i think what the OP is looking for is HUD functionality, ie. the
> "time" display stays locked to the viewport, regardless of zoom or
> rotation.
> 
> AFIAK this is not currently supported in vpython.  however, the same
> effect can be achieved by using a "HUD frame" and constantly
> recomputing it's position/zoom/rotation as the main frame moves.  the
> other option is to put your app into a "container" frame, and ensure
> the main frame never moves... anything added to the main frame is a
> part of the HUD; i think the issue with this was mouse grabs are sent
> to the main frame (IIRC).  sorry, i don't have any code examples on
> hand :-(
> 
> C Anthony
> 
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