Flatten Items

Replies to This Discussion

Permalink Reply by Aaron M. Ryan on November 19, 2013 at 8:04pm

items = [stuff]
temp = []
for item in items:
temp.append(item)
results = temp
a = results

I tried creating a new list, but the data is still coming out grafted...any thoughts.

Permalink Reply by Giulio Piacentino on November 20, 2013 at 6:36am

Hi Aaron

can you send an example of what you are trying to do? What is precisely the task that you are trying to accomplish in this case?

Thanks

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Aaron M. Ryan on November 20, 2013 at 12:01pm

 Giulio,

Here's the code and a snap shot of this section of the def.

I want to try and avoid iterating through every item of every list if I can help it.

evalPts = rs.EvaluateCurve(srfCrvsOuter, dist1)

ptA = tubeCenters
ptB = evalPts
tubeNormals = rs.AddLine(ptA,ptB)

divPts = rs.DivideCurve(tubeNormals, 10, True)

innerPts = []
for i in range(11):
pt1 = divPts[i]
pt1 = rs.AddPoint(pt1)
eval = rs.CurveClosestPoint(srfCrvsInner, pt1)
evalPt = rs.EvaluateCurve(srfCrvsInner,eval)
innerPts.append(evalPt)

lines = []
lengths = []
for i in range(11):
pt1 = divPts[i]
pt2 = innerPts[i]
line = rs.AddLine(pt1,pt2)
lines.append(line)

length = rs.CurveLength(line)
lengths.append(length)

sortedLines = [x for (y,x) in sorted(zip(lengths,lines))]

Thanks for your time.

Attachments:

• Flatten-Output_GHPY.PNG, 99 KB

Permalink Reply by Anders Holden Deleuran on November 20, 2013 at 11:11am

You can use the usual GH right-click menu to flatten an input parameter. See attached file.

Attachments:

• GHPython_FlattenInput.gh, 5 KB

Permalink Reply by Aaron M. Ryan on November 20, 2013 at 11:59am

HAHA!  Yes...I could just flatten the data on input, however it is useful to deal with it as separate branches and then flatten in the code...

...the code I posted is the simplest case I could imagine...Grafted List enters component => Exits Flattened.  

I've noticed a flatten_data flag in C# and VB  does such a thing exist in GHPython?

 

Permalink Reply by Anders Holden Deleuran on November 20, 2013 at 12:38pm

Hehe, well you did say it was a dumb question ;)

Not quite sure I follow, but the GH datatree class has a method called flatten. Perhaps this is what you're looking for? See attached. Hope that helps.

Attachments:

• GHPython_FlattenInputInScript.gh, 5 KB

Permalink Reply by Giulio Piacentino on November 20, 2013 at 12:39pm

Hi again Aaron

then, I think you want to have a 'Tree Access' input and then navigate it the way you like.

You can see an example in the Help (just Right click -> Help for links to discussions) or search this forum for it. I saw Anders' himself answering with a great sample here:

http://www.grasshopper3d.com/xn/detail/2985220:Comment:722462

Does it help?

Thanks,

Giulio
--
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Permalink Reply by Aaron M. Ryan on November 20, 2013 at 5:09pm

This works Great!!!!

Tree Access on Input and Flatten() function are perfect!

Thanks So Much, Anders and Giulio!

aaron