searching for containment elements in branches

Replies to This Discussion

Permalink Reply by djordje on December 28, 2012 at 3:58pm

Hi Jonathan,

Would you be so kind to share the definition (.gh with .3dm file too - if present).
Thank you.

Permalink Reply by djordje on December 28, 2012 at 4:05pm

That's the problem - I can not understand it.
Somebody else may help you.

Permalink Reply by Jonathan Sheridan on December 28, 2012 at 4:07pm

here you go

Attachments:

• check008.gh, 8 KB
• check008.3dm, 136 KB

Permalink Reply by djordje on December 28, 2012 at 4:27pm

You want to cull all curves (colored in white) which are outside, or partly outside of your offsetted curve (colored in green):

?

Permalink Reply by Jonathan Sheridan on December 29, 2012 at 1:01am

Yes I have posted a good boundary example in the screen grab as the two that cross the threshold in the corner are not culled by using a centroid containment, and I would rather cull these based on a number of divisions on that curve as in the defintion (i.e. by 4). The offset in the def is slightly different and should cull two or three more curves as in the lists that show my aim below.

Basically I want to look into each branch of the groups of points from each closed curve . Marking in a list whether it contains a one or a zero (0= outside 1 = coincidents).

              {0;0}
0. 2
1. 2
2. 2
3. 2
            {0;1}
0. 0
1. 2
2. 0
3. 2
            {0;2}
0. 0
1. 0
2. 0
3. 0
            {0;3}
0. 2
1. 2
2. 2
3. 2
            {0;4}
0. 2
1. 2
2. 2
3. 2
            {0;5}
0. 2
1. 2
2. 2
3. 2
            {0;6}
0. 0
1. 2
2. 2
3. 1
            {0;7}
0. 2
1. 2
2. 0
3. 0
            {0;8}
0. 2
1. 2
2. 2
3. 2
            {0;9}
0. 2
1. 2
2. 2
3. 2
            {0;10}
0. 2
1. 2
2. 2
3. 2
            {0;11}
0. 2
1. 2
2. 2
3. 2
            {0;12}
0. 2
1. 2
2. 2
3. 2
            {0;13}
0. 0
1. 2
2. 2
3. 0
            {0;14}
0. 2
1. 2
2. 2
3. 2

I want to create a list from these points. That marks each curve that pokes out, in a cull pattern as such:

2
0
0
2
2
2
1
0
2
2
2
2
0
2

Using a 1 where there are co-incidents in the curve points and the boundary. A 2 for true (outside points) and a 0 for containment. So I might be able to use the 1 in future developments - however if a true false list is easiest I can live with that.

So could I use F(x) function? - to look for 0 or 1's in each bunch of points and thus list as such for a cull pattern? or will Path mapper help me here? Or can I rely on simply grafting and splitting??

I am usure of the neatest solution and would love to learn. Hope you can direct me.

rgrds

J.

Permalink Reply by djordje on December 29, 2012 at 5:26am

Use this:

Attachments:

• check009.gh, 10 KB
• check009.3dm, 171 KB

Permalink Reply by Jonathan Sheridan on December 29, 2012 at 6:06am

Brilliant thats exactly what i wanted and more - and as it would happen I had come to a similar conclusion myself... however using a simpler route - which means I couldnt do quite as much as yours - so thankyou - and Happy New Year!

Would a Function to perform a Culling pattern look something like this I wonder?:

If x = 0 or 1

J

Attachments:

• simplified.png, 305 KB

Permalink Reply by djordje on December 29, 2012 at 6:29am

Thank you for posting your solution.

By the way, some of us are still using Rhino 4.

Evaluation version 5 can be downloaded, but it is 90 days limited. And it has a 25 saves constraint.
So it would be useful if you could upload your Rhino .3dm files as v4 ("File-> Save as-> Rhino 4 3D models").
Thank you.

Happy New Year to you too.

Permalink Reply by Jonathan Sheridan on December 29, 2012 at 6:55am

A pleasure and will do.

Just to let you know that the y component on the image I posted is the number used to divide each curve.