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add px_sphere

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This commit is contained in:
Justin Lin
2019-06-21 20:17:31 +08:00
parent 937b6a35bd
commit b9d88334c5
1 changed files with 18 additions and 0 deletions
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18
src/pixel/px_sphere.scad Normal file
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@@ -0,0 +1,18 @@
function px_sphere(radius, filled = true) =
filled ? [
for(x = -radius; x < radius; x = x + 1)
for(y = -radius; y < radius; y = y + 1)
for(z = -radius; z < radius; z = z + 1)
let(v = [x, y, z])
if(norm(v) < radius) v
] : [
for(x = -radius; x < radius; x = x + 1)
for(y = -radius; y < radius; y = y + 1)
for(z = -radius; z < radius; z = z + 1)
let(
v = [x, y, z],
leng = norm(v)
)
if(leng < radius && (leng * leng) > (radius * radius - 2 * radius) ) v
];