[Ecls-list] Trigger action when data structure is updated?

[Rui Maciel]

I'm currently designing a small pet application which has a important 3D 
visualization component, which consists basically of rendering models composed 
of points, lines, surfaces and a set of geometric solids, and I want to be 
able to operate on that data through a scripting language.

In order to simplify the design, I'm exploring the idea of storing all 
information related to the models directly as a set of data structures managed 
by the scripting language's interpreter. Yet, in order for that to work I 
would also need to have a way to warn the underlying application if a data 
structure was updated in order to act on the change. For example, if the user 
tweaks the data structures by adding a new line, move point through space or 
delete elements, I would need the underlying application to act on those 
changes and update the model's rendering. 

As my experience with ecl is extremely limited and as ecl's manual and wiki 
aren't very informative I don't have a clue if that feature is possible to 
implement or if there is any acceptable workaround for that problem. 

So, what are your thoughts on this issue?


Rui Maciel