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you can get the number of points now.

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Justin Lin
2017-04-25 10:03:57 +08:00
parent 4bef805d5d
commit ab45ff5032
1 changed files with 5 additions and 4 deletions
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9
src/circle_path.scad
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@@ -12,14 +12,15 @@
* *
**/ **/
function circle_path(radius) = function circle_path(radius, n) =
let( let(
_frags = $fn > 0 ? _frags = $fn > 0 ?
($fn >= 3 ? $fn : 3) : ($fn >= 3 ? $fn : 3) :
max(min(360 / $fa, radius * 6.28318 / $fs), 5), max(min(360 / $fa, radius * 6.28318 / $fs), 5),
step_a = 360 / _frags step_a = 360 / _frags,
end_a = 360 - step_a * ((n == undef || n > _frags) ? 1 : _frags - n + 1)
) )
[ [
for(a = [0 : step_a : 360 - step_a]) for(a = [0 : step_a : end_a])
[radius * cos(a), radius * sin(a)] [radius * cos(a), radius * sin(a), 0]
]; ];