How to sample a color from a bitmap using a point to extract closest pixel's color value?

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Permalink Reply by Laurent DELRIEU on June 13, 2017 at 8:42am

Hello, there is no real Bitmap object in Rhino or Grasshopper. Bitmap is positionned on a mesh or a surface. If you look at my code here

http://www.grasshopper3d.com/forum/topics/creating-a-knitting-patte...

you will see that I use an Image component which draw a bitmap on a mesh. Height = Pixels Height

Width = Pixels in width

But this could lead to error as Y in bitmap is from top to bottom. 

Could you upload a definition or 3dm  ?

Permalink Reply by Pieter Segeren on June 13, 2017 at 9:38am

I read it like Jim was meaning this: toggle the Mona Lisa icon:

Permalink Reply by Joseph Oster on June 13, 2017 at 9:38am

http://www.grasshopper3d.com/forum/topics/image-sampler-with-rgba-i...