Kangaroo problem with solver

Grasshopper
, ,
1

Hello @DanielPiker
I test This example of @HS_Kim and it work fine but when i try it in Rhino7 the solver show an error.

error
error1093×527 54.6 KB

kangaroo.gh (14.1 KB)

2

If I’m not mistaken, you can’t have more than one active Solver treating the same base data concurrently on the canvas. However, you can usually chain them.

3

I tested before using the example it and got this error , but now it work !
With Zombie solver the error exist.

image
image1264×427 43.2 KB

4

Oh, the GoalObjects input is also for Kangaroo goals (e.g. edge lengths, anchors, etc.) only. You’re currently inputting some points!

5

You can check the file attached

6

How i can use Grab in Python script? and why Goal.Locator don’t accept point?

ps = ks.PhysicalSystem()
goals = List[ks.IGoal]()
pts = List[rg.Point3d]()
pts.Add(point)

wrapper = Grasshopper.Kernel.Types.GH_ObjectWrapper(point)

goals.Add(ks.Goals.OnCurve(pts,curve,100))
goals.Add(ks.Goals.Locator(wrapper))

for g in goals:
    ps.AssignPIndex(g,0.001)

threshold = 1e-20

ps.Step(goals, True, threshold)

point = ps.GetPositions()
7

Sorry, I mistook the OnCurve for a vanilla component. I’m not used to the icon view. :slight_smile:

This works for me:

Screenshot 2021-07-11 at 08.47.32
Screenshot 2021-07-11 at 08.47.32913×427 62.2 KB

I can grab the point and move it along the curve.

As for the second Solver component, read what I’ve written in my first post above.

I don’t know. Sorry. I haven’t used Kangaroo in Python much.

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8

Hi @anon39580149,

Passing points should work in a script component if you use CastFrom instead of putting the point in the constructor:

    GH_ObjectWrapper wrapper = new GH_ObjectWrapper();
    wrapper.CastFrom(point);

Using Grab in a script would be more tricky though - it functions a bit differently from the other goals because of the mouse events and dynamic indexing, meaning more of the functionality happens in the component itself. Can you describe a bit about how you want to use it?

1 Like
9

Thanks @DanielPiker
I want make the definition more simple to use the script many times for different sliders like this:

10

Does the Grab object have to be created inside the script?
If you’d be okay with connecting the Grab component as an input to the script I think that might be simpler.

11

Yes i asked to know if it is possible and simple, i will use Grab outside the script ;
also why zombie solver show error?

12

The Grab component isn’t compatible with the Zombie solver because the Zombie solver does all its iteration to convergence internally in a single SolveInstance, so there’s no time it could accept live updating mouse inputs.

Here’s an example of creating a Grab goal in a script component.
grabscript_test.gh (9.9 KB)

In addition to the reference to KangarooSolverYou’ll need to add one to Kangaroo2Component.gha, because some of the Grab functions are located there.

2 Likes
13

I understand
Thank you very much @DanielPiker

1 Like