Selecting entites by R,G,B colour wit use of scrpit
I need to select entity by colour. I am using this typ of command:
(sssetfirst nil (ssget "_X" (list (cons 62 5)))), -where 5 is index colour number,
but I have some objects in drawing with RGB:250,200,120
My question is how can I change this command to select this colour?
I don't want to use quick select function but only command line.
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Comments
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(ssget "_X" '((420 . 6579300)))
Selects RGB value 100,100,100How do you get the integer for true colour?
With RGB values ranging in 8 bits, 2^8, from 0 up to 255, the following is true:
RGB = (2 ^ 8) ^ 2 * R + (2 ^ 8) ^ 1 * G + (2 ^ 8) ^ 0 * B
or
RGB = 65536 * R + 256 * G + BSo your 24 bit value is 65536 * 250 + 256 * 200 + 120 = 16435320
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