Grasshopper

algorithmic modeling for Rhino

image sampling

hi,

 

I am trying to sample and image and compare the result for a certain value (color) or a colour close withing a certain proximity to that.

where that condition is met, I would like to do something.

trouble is that I am obvioulsy gettig 3 (RGB) values per point. I have tried creating a unique "checksum" out of that (ie. x/y+1/z+1) so I have one number per pixel to compare to. (the +1) is in case I would devisde by 0 otherwise.

doesn't quite work yet ... any ideas

thanks,

Peter 

 

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Permalink Reply by Danny Boyes on March 7, 2011 at 9:06am

Hi Peter,

 

Here's how I have approached this, see attached

BTW: By using the swatch you get a colour dropper to pick the colour you want from the image sampler directly.

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Permalink Reply by peter on March 7, 2011 at 9:12am

cool,

thanks a lot!

Peter

 

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