Learning data trees

Replies to This Discussion

Permalink Reply by Chris Tietjen on June 21, 2011 at 8:41pm

Hope this helps.

 

Chris

Permalink Reply by Chris Tietjen on June 21, 2011 at 8:45pm

Here's the ghx file.

 

Chris

Attachments:

• CurveMidpoints.ghx, 52 KB

Permalink Reply by Steve Scott on June 21, 2011 at 10:07pm

That's it!  Thanks!

Permalink Reply by Dedackelzucht on June 22, 2011 at 12:52am

thanks for a new way to get it :-)

 

DeDackel

Permalink Reply by Dedackelzucht on June 22, 2011 at 12:50am

I made a few weeks ago a list of exatctly what you are looking for. Myself was introduced by Danny to the CurvePoint component. After that I decided to think of how many ways do exist to reach the same result. That is what I love about Grasshopper. :-)

 

Best Regards

 

DeDackel

Attachments:

• CurveMidpoints_DeDackel.ghx, 245 KB

Permalink Reply by Danny Boyes on June 22, 2011 at 3:03am

Hi DeDackel,

 

Be very careful about using domians to find mid points. These two methods:

Will not necessarily return a valid midpoint.

1) Create a Line in Rhino.

2) Reference it in GH with your definition

3) Notice that you get the expected results.

4) Now rebuild the Line in Rhino. Point Count = 5, Degree = 3

5) Still the same results

6) Now show control points in Rhino.

7) Delete the 4th Control Point ie. not the mid point or the two ends but either (not both) of the other two

8) Now you will see a mid domain point biased to one end.

Permalink Reply by Dedackelzucht on June 22, 2011 at 4:08am

oh, thanks for this hint!

There is no need to use them here. So I will exclude them as a good solution.

 

Many Thanks Danny

 

Best Regards

 

DeDackel

Permalink Reply by Luis Fraguada on June 22, 2011 at 2:34am

The great thing is that in your description you wrote the pseudocode for the processs:

Permalink Reply by Dedackelzucht on June 22, 2011 at 2:36am

yeah, thats cool... :-) I am wondering if there are more ways to get the Pt ?

 

Best Regards

 

DeDackel

Permalink Reply by Danny Boyes on June 22, 2011 at 6:37am

You missed the Evaluate Length Component.

Permalink Reply by Dedackelzucht on June 23, 2011 at 6:27am

damn, you are right! :-)

 

Best Regards

 

DeDackel