Cull Pattern Problem in making octagonal pattern

Hello

I've made pattern of octagons based on point grid. I used cull patterns and Tree Branch components. At the end I found out that the figures are not connected together but offsetted of 1 grid "cell". I'm wondering, how to modify my definition to encloser the octagons. I want them to "touch" themselves. Do you guys think that's possible without big changes? Is my way of doing this pattern correct ?

Cull%20pattern-%20chi%C5%84ski%20pattern.gh

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Permalink Reply by Systemiq on September 19, 2012 at 4:06am

Probably easier that way

Attachments:

Octopat.gh, 6 KB

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Permalink Reply by Kuba on September 19, 2012 at 4:46am

But what when I wan't to put it on non two dimensional surface with divide surface? I think it won't work. I wanted to prepare my pattern as a pre- layout for further modifications, based on point grid.

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Permalink Reply by Systemiq on September 19, 2012 at 12:05pm

What about this ?

Attachments:

Octopat2.gh, 10 KB

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Permalink Reply by Kuba on September 21, 2012 at 5:35am

Systemiq can You explain me how "Relative Item 2" in that definition and what is the logic of writing of "offset of relative combo"? I don't understand it exactly.

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Permalink Reply by Systemiq on September 21, 2012 at 8:04am

vertical and horizontal lines of the octogons are obtained from culled points.

The cull pattern takes into account that the lines share some points: with pattern true-false-false-true, you end with points tffttffttfft... etc, when you need tfftfftfftfft.... Thats what wasnt working in your script.

the lines are organized in columns (structured in data trees).

RelItem2 is used to match the vertical (A) and horizontal (B) lines:

for example offset {-1}(1) will match the element i in branch n from A with the element i+1 in branch n-1 from B. So you can construct diagonal lines properly.

Your method will work too if you properly do cull patterns .

oooooooooo -> o__o__o__o with pattern true-false-false

but -> o__oo__oo_ with pattern true-false-false-true

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Permalink Reply by Igor on September 19, 2012 at 12:21pm

The easiest way with Starling http://www.grasshopper3d.com/group/starling ...

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Permalink Reply by Kuba on October 1, 2012 at 12:14pm

Can You guys explain me why it doesn't work? Isn't that possible only with cull pattern as Systemiq said?

Attachments:

Cull pattern- chiński pattern część II - ćwiczenie 2.gh, 9 KB

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Permalink Reply by Kuba on October 2, 2012 at 1:58pm

can someone take a look at my last excercise? I'm trying to learn, easy manipulate the point-based 3d patterns. Still have some problems but little bit closer I think :)

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Permalink Reply by Alan Tai on October 3, 2012 at 12:47am

Shift and Flip matrix will make it work.

Attachments:

Cullpattern.gh, 10 KB

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Permalink Reply by Kuba on October 3, 2012 at 1:53am

Thanks Alan Tai but the file You attached doesn't work on my GH. Message appears as in image and than " I have no idea what You want me to do". Can You send it again please?