Simplify curve (removing points)

Hi Guys, I would like to simplify a curve: I think that easy way to do it is removing points under a certain distance value (in this case 10). Is there anyone that could help me? I tried a lot of examples but doesn't work :-(

Replies to This Discussion

Permalink Reply by Michael Pryor on March 10, 2013 at 7:01pm

Will it always be a rectangle?

Permalink Reply by djordje on March 10, 2013 at 7:44pm

Hi Landscape,

Try this:

If you do not get desired result, increase the "Accuracy" slider value.

You will need at least Kangaroo 0.084 plug in for using this definition.
Download it from here.

Attachments:

straight walls.gh, 11 KB
straight walls.3dm, 53 KB

Permalink Reply by Mateusz Zwierzycki on March 10, 2013 at 7:46pm

ok ?

EDIT : you should set the polyline component' C input to True when working with closed polylines

EDIT 2 : and there is a bug when the polyline is closed : the last and the first point are always erased. brb.

EDIT 3 : the solution for closed polylines (add the shift component) (for open polylines the earlier solution will work well)

EDIT 4 : to get solution working with both closed and open polylines, just use remove duplicate points component instead of shifting (kangaroo or some other plugins).

Attachments:

simply.gh, 4 KB

Permalink Reply by Michael Pryor on March 10, 2013 at 8:22pm

Another way.

Attachments:

boundary.gh, 4 KB

Permalink Reply by Erick Vásquez on March 10, 2013 at 10:45pm

and another way, using convex hull.

Attachments:

hull.gh, 7 KB

Permalink Reply by Michael Pryor on March 10, 2013 at 11:04pm

Well, convex has issues when an inner vertice is closer to an outer vertice than the next outer vertice. But for these shapes it works appropriately.

Permalink Reply by Landscape on March 11, 2013 at 3:17am

WOW!!!! Many answers, thanks a lot!! ;-)

@Michael Pryor: geometry could be a sort of rectangle, square.

I'll try all of your examples!! :-)

Permalink Reply by Landscape on March 11, 2013 at 4:57am

mmmm, examples seems doesn't work well. I upload my rhino file (there is only an example, original file have more than 1 geometry like this).

Permalink Reply by djordje on March 11, 2013 at 5:19am

You did not mention those additional one side connected walls at the bottom right, and upper left and right corner. Trim them in Rhino.
Apart from that, you seem to have an overlapping walls (curves) too. Delete the parts that overlap. Then join all the curves and apply that final joined (single) curve in one of above posted grasshopper definitions.

By the way, please use the Rhino 4 .3dm file format.
A few people around here are still using that version.

Thank you.

Permalink Reply by Landscape on March 11, 2013 at 5:30am

It works!! Thanks a lot Djordie!! OK, next time I'll use Rhino 4 format ;-)

Permalink Reply by Michael Pryor on March 11, 2013 at 7:32am

Solution i said should solve this easily.

Permalink Reply by Landscape on March 11, 2013 at 7:45am

Unfortunately, no and I don't know why :-(