image sampler

hi im trying to take an image apply a random point grid to it then depending on the brightness of the image under each point control the radius of a polygon placed on that point. is this the right tool to be using or am i barking up the wrong tree???!

Replies to This Discussion

Permalink Reply by jamiep on October 20, 2009 at 8:04am

even if anyone could point me in the direction of a good tutorial on using the image sampler for this sort of thing i would be most grateful
j

Permalink Reply by Danny Boyes on October 20, 2009 at 8:12am

Take a look at this thread Vicente Soler had a good example

http://www.grasshopper3d.com/forum/topics/latest-version-question

Permalink Reply by jamiep on October 20, 2009 at 8:20am

cheers danny its a good start!

Permalink Reply by P. Casey Mahon on October 20, 2009 at 8:41am

I just spent the last 2 days doing this to create a pattern for perforating sheet material. If you can wait a little longer I'm cleaning the definition to publish on the forum.

-Case

Permalink Reply by jamiep on October 20, 2009 at 10:27am

sounds perfect would love to see how you went about it. i have got a vague solution but its not very clean

Permalink Reply by P. Casey Mahon on October 20, 2009 at 1:59pm

Here you go...If you want to make the grid random I would use a list item and a jitter to just pick out points from the ordered grid, but the image will suffer when you do this because your basically removing pixels

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