K2: Angle Goal Not Updating "Live"

Replies to This Discussion

Permalink Reply by Daniel Piker on May 7, 2015 at 4:59pm

This is odd, and I can't tell yet why it is happening. I'll look into it some more, thanks for pointing it out

Permalink Reply by Anders Holden Deleuran on October 16, 2015 at 10:14am

Hi Daniel,

Just jumped back into some K2 scripting and hit this issue again. I did a bit more digging and made a few observations that might help:

1) Updating goals live seems to work when not using any scripting components (see attached file: 151016_CustomSolverLive_Elastica_BendingNotUpdating.gh),

2) When using a custom GHPython component for the solving it gets a bit weird. In the file above I can live update the spring/length goal, but not the angle goal.

3) This led me to try out various combinations of goals/solvers made with the compiled components and C#/Python scripting components to see if that could tell us anything (see attached file: 151016_K2_UpdatingGoalsLive_ScriptingComponentsIssue.gh). The pattern seems to be this:

Can update goals live:
- Make goals with compiled components + Solve with scripting component.
- Make goals with scripting components + Solve with compiled component.

Can NOT update goals:
- Make goals with scripting components + Solve with scripting component.

I seem to remember having similar problems when we were implementing Joey last year. As far as I can recall this was resolved by calling the SetConstraintList() method just prior to the solve step. But I guess the new design with AssignPIndex() means that I will have to rethink what we did with Joey.

Think I managed to confuse myself even further by writing this out :)

Best,

Anders

Attachments:

• 151016_CustomSolverLive_Elastica_BendingNotUpdating.gh, 15 KB
• 151016_K2_UpdatingGoalsLive_ScriptingComponentsIssue.gh, 32 KB