I have a huge wireframe structural model with a lot of layers according to a lot of different sections and I want to organize it a bit. I would like to be able to select all lines aligned on y axe (=difference in x=0) for exemple.
Please help dear RUBY MASTERS!
Dear jewellers,
your discussion give me an idea...
If it is possible to define attributes for entities like faces, what about using this method to create an area reporter with the area of each face embeded in an attribute?
It would be wonderfull if the area of the face (or collection of faces) could be updated if the geometry is changed... 
Thats what Didier BUR did with heightfield_gen.rb.
It's not with common bitmap files like jpg or png but...
Unfortunately Didier as disappeared for a while. I hope is fine.
Anyway thank you Thomthom for your reply.
The idea is to "paint" distribution maps with photoshop or whatever.
"Bitmap select" to select the faces and "components onto face collection" by Chris Fullmer to distribute the components onto the selected faces.
Thank you GAIEUS for you reply.
I've tried with this cool ruby form Didier Bur but's hard to obtain a clean selection at the end of the process.
I think a modification of Didier's Code could do the job.
Unfortunately it is unreadable.
Didier si tu nous entends....
Hi everybody,
It is my first topic in the forum (my most visited website: twice a day!).
First, I would like to say a big THANK YOU to all RUBY MASTERS who make Sketchup what it is today.
My request: "bitmap select" like in the excellent polyboost for 3ds max.
It is hard for me to explain in english so I've make a screenshot.
Greeeeeeeeeeetings.
Whaat you are the don.
I'm a french architect working every single day on this killer app. called sketchup (I'm seriously thinking about forgetting autocad & 3Dstudio).
Last week I discovered SUBDIVIDE&SMOOTH and I was very excited: The power of subdiv inside SU!!!!!!!!!!! 
Tonight Obama is the new president of USA and I see the video on Profile builder: what can I say?
It's a new day, it's a new era.
God bless Obama
God bless Whaat
Whenever you want for beta test!!!!
PS: sorry for my poor english