Swarm & circulation study

Replies to This Discussion

Permalink Reply by robert cervellione on September 23, 2012 at 8:02pm

i am glad your trying locust. its hard to see exactly whats going on from the image but the first thing i notices it that the points need to be flattened when going into the locust node. 

Permalink Reply by Steam on September 23, 2012 at 8:19pm

Thanks for the quick response Robert. It is actually flattened. Just didn't show up in that image. I can't seem to get the swarm to move all along the bounding box.

Permalink Reply by robert cervellione on September 23, 2012 at 8:45pm

it can be a few things, like the seek radius is too small or the force is not enough. can you post the file, or a more complete screen shot

Permalink Reply by Steam on September 23, 2012 at 9:26pm

They are attached. I've set a few attractor and repulsion points. But the swarm is not able to move past the first attractor point.

Attachments:

• circulation.gh, 19 KB
• circulation.3dm, 70 KB

Permalink Reply by robert cervellione on September 25, 2012 at 9:28am

i had a look and there are a few issues.

1. you have a narrow tube that you want them to go down but you put a seek point right at the start, so naturally they will find that first and stay seeking that point, they have no reason to keep going.
2. you seek force is higher then the wander so they will not really break free from that first seek point. 
3. why constrain them so much in a l shaped tube, remove the tube and let them go free. 

here is with my quick adjustments

-robert

p

Attachments:

• circulation2.gh, 13 KB

Permalink Reply by Steam on September 26, 2012 at 4:05am

The project I'm working on is a long narrow street, which is why I need the swarm to be constrained to the brep. The second image you have is how I want the swarm to behave, unfortunately, the swarm reacts very differently when there's a bounding box.

I'm trying to play with this definition as well. http://www.au-urbanfuture.org/blog/?p=523 But I'm not sure why I can't get it to work.

Permalink Reply by RWNB on September 26, 2012 at 5:27am

i think,
the vb script is no more compatible with the new grasshopper version. maybe robert has time to explain what should be changed in the script?

Permalink Reply by robert cervellione on September 26, 2012 at 8:04am

the biggest thing is not so much with the setup but the bounding volume, you looking for the movement of a swarm but you constrain it nto a very narrow tube and then ask it to make a 90 degree turn. i would recommend making a better bounding volume. look at the example you posted there is a lot of space that the swarm can move through

also you have to take into consideration scale a little, the system was moving way to fast for the tight small space they were in so i would slow them down with a slider on the MS input of the locust which will control max speed. 

hope this helps. i will try to make a example showing movement through a city. 

Permalink Reply by Steam on September 26, 2012 at 11:19pm

Dang...that's a pity. Thanks for letting me know RWNB.

Robert, thanks for the help. You will likely get questions from me again, sorry to be a bother. An example showing movement through streets would be incredibly helpful. Hope to see it soon.

Permalink Reply by Sarah Shuttleworth on February 18, 2013 at 11:51am

Did you ever get to make this work? Including applying this withing a city?

Thanks

Permalink Reply by Atis Sedlenieks on October 8, 2013 at 2:39pm

any results?