| Differences between <screenCoordinates> and <Infrastructure visualization> tags [message #2210] |
Mon, 24 June 2019 12:34  |
Fabiana Diotallevi
Messages: 21
Registered: October 2018
|
Junior Member |
|
|
Dear all,
we are adapting our tool RaIL-AiD to import/export data in the new railML 3.1 format.
I have a question regarding the two different tags:
- <infrastructureVisualizations>
- <screenPositioningSystems>
My aim is to draw with RaIL-AiD a railway track-plan, then export it in railML 3.1 and then re-import it and visualize it.
Suppose that I have drawn the station, and that for each of my objects (i.e. signals, switches, balises, etc) I have defined a specific measure of the linear mileage in meters. I need to export, together with the linear coordinates of the objects, also the "screen" coordinates, because I would like to reload the railML file and see again on the screen the exact same drawing I had before the export.
My question is: where do the screen coordinates shall be saved in the railML file? In the <screenPositioningSystems> or in the <infrastructureVisualizations> tag?
In particular, I have a problem with the netElements, that are not simple "point-objects" defined by a couple of (x,y) coordinates, but they can be polygonal chains.
So far the only way I have found is to export them as a multi-point <linearElementProjection> in the <infrastructureVisualizations> tag.
The same method (i.e. export objects coordinates using the <infrastructureVisualizations> tag) could be applied to map all other objects (spot-like, line-like, area-like).
In this approach, what is the use of the <screenPositioningSystems> tag? Can I neglect it?
I hope to have explained myself,
thanks in advance,
Fabiana
|
|
|
|
Members
Search
Help
Login
Home
