uniform dispacement of poins on double curvature surface

Replies to This Discussion

Permalink Reply by Andrei Raducanu on June 2, 2013 at 11:17am

does the Populate Geometry component do that? (i just saw it)

Permalink Reply by djordje on June 2, 2013 at 6:10pm

Hi Andrei,

What do you mean by "homogeneous displacement"? Is that the opposite of "random displacement", and synonym for "regular", "in rows and columns" displacement?
If that is so, then you can use 'Divide surface' component.

'Populate geometry' component will randomly generate points on your surface.

Permalink Reply by Andrei Raducanu on June 2, 2013 at 6:52pm

homogeneous in the sense that they are equally spaced (more or less). If i'd use divide surface, the points density will be increased in the areas where the surface UV domain in concentrated due to it's curvature and so on..

Permalink Reply by djordje on June 2, 2013 at 6:56pm

Would rebuilding the surface in Rhino, fix that?

Permalink Reply by Andrei Raducanu on June 5, 2013 at 7:15am

nope. it's still a deformed rectangle. isocurves are no good in this situation...

Permalink Reply by djordje on June 5, 2013 at 7:36am

Please attach your files.

Permalink Reply by Andrei Raducanu on June 5, 2013 at 7:52am

it can be any doubly curved surface, but is one example...

Attachments:

• surface for uniform displacement experiments.3dm, 30 KB

Permalink Reply by Danny Boyes on June 5, 2013 at 7:53am

How about something like this where the Red Triangles are what you get normally and the Blue Circles are more uniformly distributed.

Attachments:

• UDSrfExample.gh, 36 KB

Permalink Reply by Danny Boyes on June 5, 2013 at 8:02am

there's some logic off still but you can see where I'm trying to go with this.

applied to your surface:

Attachments:

• UDSrfExample_mk2.gh, 34 KB

Permalink Reply by Andrei Raducanu on June 5, 2013 at 9:18am

thanks for the effort, but i'm looking for something that works on double curvature, non-ruled surfaces

EDIT: i just saw the second file, and,a s you can see, the density isn't uniform, the points get closer towards one end...

Permalink Reply by Danny Boyes on June 5, 2013 at 9:31am

Its almost like you need to generate a distribution in a bounding box and then only use the the contained ones

Permalink Reply by Daniel Piker on June 5, 2013 at 9:32am

Are you looking for uniform distance between points and their neighbours, or uniform voronoi region areas ?

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