Beginner Question - blending/morphing between 2d surface patterns

Hi folks,

Been searching the internet and can't seem to get the answer to my exact question. I'm so novice in gh that I can't really modify the answers I have found that are close, such as the below:

http://www.grasshopper3d.com/profiles/blogs/how-to-merge-a-hexagonal

http://www.grasshopper3d.com/forum/topics/morphing-two-breps?id=298...

What I'd like to do is create a blend between 2d geometric patterns. I believe I could go about it by creating a grid, or maybe I should modify the individual geometry such as in the above example (but 2d) and then array?

I am trying to design a cube where the surface patterns on each face "blend" into one another at the edges. The underlying grid is the same on all the patterns, which I'm hoping should help. I will add images of the exact patterns if that would be helpful, but the general gist is trying to go from a grid to a subway tile pattern to a herringbone pattern, etc... see reference images attached. Most of the patterns I am using are repeating geometries on each face.

Any suggestions on how to write this script would be SO incredibly appreciated.

Thank you!

Attachments:

3x6-subway-tile-pattern.jpg, 39 KB

Replies to This Discussion

Permalink Reply by lilia levine on October 31, 2016 at 2:41pm

Wanted to bump this by also adding a better link to what I am trying to achieve, though obviously automated instead of manual. Again - if anyone can help instruct me on how to set this up in gh, I'd be grateful!

http://www.designcoding.net/parquet-deformation-manually/

Permalink Reply by Laurent DELRIEU on October 31, 2016 at 4:16pm

Hello

what you want to do is not so easy. The problem is that the number of rectangles is not always the same, so you must have rectangle with a null surface (a line) in order to be able to morph something. Each point of the geometry "from" has to have a point on geometry "to". You can draw that by hand and find the logic.

You can look at these threads also

http://www.grasshopper3d.com/forum/topics/parametric-escher-s-tesse...

http://www.grasshopper3d.com/forum/topics/morphing-2d-geometries

I will test one thing and come with an example.

Permalink Reply by Laurent DELRIEU on October 31, 2016 at 4:58pm

Here is an example to morph a panel from Subway to Herringbone. There is just a morph along a line, it could be also a polyline. To morph a rectangle 7 points are needed ! Morph could be some slopes but you will need intermediate points, polylines.

Attachments:

morph_rectangle.gh, 18 KB

Permalink Reply by lilia levine on October 31, 2016 at 5:50pm

Hi Laurent,

Thank you for your reply! I've seen the "morphing 2d geometries" post, but I must admit I didn't find it very helpful at explaining the logic behind the solution with images...perhaps you could clarify, if you think that's the best way to achieve what I'm doing? I understand that the points are adjusted, but that's about as much as I got from the post, unfortunately, as I'm still very new to gh.

The tessellation seems to be the best route, if I understand correctly.

In reply to the file you added (THANK YOU!) I have one question: the last line of definition is supposed to...create the repeating pattern? I'm a little unclear, I apologize! I have attached an image that shows it has no data. The things you have shown so far make sense, and yet I cannot wrap my head around how to make them a repeating field yet... maybe apply them to a grid?

Thanks again for your time and patience.

Attachments:

group- no data.PNG, 34 KB

Permalink Reply by Laurent DELRIEU on November 1, 2016 at 10:17am

here is a solution for morphing multiple panels, with an attractor on curve. Attractor is just a way to have a number between 0 (panel horizontal) and 1 (panel vertical)

Attachments:

morph_rectangle.gh, 18 KB

Permalink Reply by lilia levine on November 1, 2016 at 7:27pm

Thanks Laurent! This is much closer!

I am curious if there is a way to make the pattern connect more seamlessly... Perhaps offsetting the geometry so that one gets the herringbone pattern?

Check out this definition I found elsewhere that deforms a pattern by rotation...maybe this is helpful for making it look like it morphs within the grid better, and creates a more "tiled" look? Although this one doesn't seem to be "drawing" the geometries using the inputs as you did...but maybe it gives you an idea? Sorry I am not better at gh to help propose my own definitions yet!

No rhino file is needed for the attached gh file.

Attachments:

2013_01_27-parquet.ghx, 105 KB

Permalink Reply by Laurent DELRIEU on November 2, 2016 at 1:35pm

Hi Lilia,

what I gave you is an example for helping you. It morphs a subway to herringbone (red colored). You have to put them in the proper place and add the shapes that doesn't change.

The coordinate of a panel say subway is

X = (i*4+(j%4)) % (max size in X)

Z = j

i is a series from 0 to 2, step 1

j is a series from 0 to 7, step 1

% is modulo used to shift