How to stop data propagation.

Is there a way to call solveinstance and after calculating it do not propagate the data ? I don't know if I'm calling things correcly, but let's say I would like to call me.expiresolution but after all I don't want the descending components to recalculate.

EDIT : and I would like to access the solveinstance of the component, so overriding expiresolution with "return" won't (?) do the job.

Replies to This Discussion

Permalink Reply by David Rutten on January 13, 2014 at 8:23am

ExpireSolution(false) won't cause a new solution. It will only expire the current object and any objects that depend on the current object. But it won't call SolveInstance either, that's the point.

You should not call SolveInstance directly, you need to provide a properly set up IGH_DataAccess instance and that's just too hard. What you can do is call ClearData(), CollectData() and ComputeData(), which basically solves the component without solving anything downstream.

However I fear that you are looking for a solution in the wrong direction. What exactly is the problem?

David Rutten

david@mcneel.com

Permalink Reply by Mateusz Zwierzycki on January 13, 2014 at 8:38am

I will just simplify it to the bare minimum, this is how the components looks like more-less :

public counter as integer

public limit as integer

byval overrides sub solveinstance(da as igh_dataaccess)

da.getdata(0,limit)

if counter < limit then

counter +=1

da.setdata(0,counter)

end if

end sub

The problem is that it's connected with gh_timer. When finally counter = limit timer still forces downstream objects to calculate. I partially resolved the problem overriding expiresolution with something like :

public overrides sub (recompute as boolean)

if counter = limit then

return

else

mybase.expiresolution(recompute)

end if

end sub

But when the user changes the limit somehow (with slider or panel or anything), nothing happens (it returns obviously). I tried to addhandler to this component to catch source... well, long story short - I crashed Rhino.

I will try with collectdata and computedata, maybe it'll work in this case.

EDIT : Sorry for a bit unclear text formatting.

Permalink Reply by Mateusz Zwierzycki on January 13, 2014 at 10:26am

Well, I did not test it in all cases yet, but seems that me.params.input(0).CollectData() does the job ! Thanks.

Permalink Reply by Freddie on January 16, 2014 at 6:03am