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add px_cylinder

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Justin Lin
2019-06-20 20:15:21 +08:00
parent 7cc01a05c6
commit 67a7d20880
1 changed files with 29 additions and 0 deletions
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29
src/pixel/px_cylinder.scad Normal file
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@@ -0,0 +1,29 @@
function _px_cylinder_diff_r(r, h, center, filled) =
let(
r1 = r[0],
r2 = r[1],
dr = (r2 - r1) / (h - 1)
)
[
for(i = 0; i < h; i = i + 1)
let(r = round(r1 + dr * i))
each [
for(pt = px_circle(r, center, filled))
[pt[0], pt[1], i]
]
];
function _px_cylinder_same_r(r, h, center, filled) =
let(c = px_circle(r, center, filled))
[
for(i = 0; i < h; i = i + 1)
each [
for(pt = c)
[pt[0], pt[1], i]
]
];
function px_cylinder(r, h, center, filled = false) =
is_num(r) ?
_px_cylinder_same_r(r, h, center, filled) :
_px_cylinder_diff_r(r, h, center, filled);