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rubysketchup

Floating loop in a sketchup plugin

I need to loop on a floating point but I don't find the right syntax. What I tried:

(-1.0).upto(1.0).step(0.1) do |t|
    ...
end

I get the following error:

Error: #NoMethodError: undefined method `upto' for -1.0:Float>

EDIT: Is there a "good" or better way to do this loop?

Solution

  • One option is to use step on a Range:

    (-1.0..1.0).step(0.1) { |i|
  puts i
}

    Note, while you increment with 0.1 you will run into floating point precision issue. So take that into consideration.

    -1.0
-0.9
-0.8
-0.7
-0.6
-0.5
-0.39999999999999997
-0.29999999999999993
-0.19999999999999996
-0.09999999999999995
5.551115123125783e-17
0.10000000000000006
0.20000000000000007
0.30000000000000004
0.4000000000000001
0.5000000000000001
0.6000000000000001
0.7000000000000001
0.8
0.9000000000000001
1.0