Pattern

Replies to This Discussion

Permalink Reply by Joseph Oster on October 28, 2017 at 2:26pm

The problem is 'Project'.  The vector is wrong so results are lost at that point.  Several ways to do this...  'MapToSrf' from flat to curved is one way, so you can still use 'Project'.  Otherwise, you need to get the curved grid points to the surface without "anomalies" (because they are really off the edges of the surface).

Permalink Reply by Joseph Oster on October 28, 2017 at 3:58pm

Something I always need to remind myself is to work at low resolution first!

To that end, I made changes to the code, including the domain output of the 'Image Sampler', restored to the default '0 To 1':

And changed the 'v_dis' slider (the 'du/dv' inputs to 'ptSrfDis') 'Real' with a lower maximum of 20 instead of 100.

Then slowly increase the resolution by reducing the value of the 'v_dis' slider (needs a better name).

After all that, you can 'Pull' circles to surface and 'SrfSplit' to create holes, or whatever.

NOTE: As before, GH will lose the 'Image Sampler' when I save my copy so you'll have to copy/paste from yours, connect and edit that domain.

Attachments:

• World_Image_2017Oct28a.gh, 20 KB

Permalink Reply by Joseph Oster on October 28, 2017 at 4:45pm

By the way, I meant "domain input of the 'Image Sampler'"...

These two images work well if you change the 'Image Sampler' from "Color Brightness" to "Alpha channel":

http://spainforum.me/media/aaron-mazze-and-world-map-simple.jpg

http://spainforum.me/media/fileworld-map-black-png-and-world-map-bl...

from Google image search, and here: http://spainforum.me/world-map-black.html/fileworld-map-black-png-a...

Attachments:

• World_Image_2017Oct28b.gh, 314 KB

Permalink Reply by Alyne Rankin on October 28, 2017 at 8:57pm

extruding the circles yields some whacky results.

Permalink Reply by Joseph Oster on October 29, 2017 at 7:28am

On a curved surface, each circle must be extruded using the appropriate surface normal vector for that location:

Attachments:

• World_Image_2017Oct29a.gh, 319 KB

Permalink Reply by Alyne Rankin on November 4, 2017 at 8:58pm

Thanks for all your help on this Joseph, I have learned a lot

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