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Code Issues Releases Wiki Activity

don't cal repeatly

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This commit is contained in:
Justin Lin
2019-06-22 09:17:45 +08:00
parent 9ed4e1c42b
commit e9b1e7f61f
1 changed files with 4 additions and 2 deletions
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6
src/pixel/px_sphere.scad
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@@ -5,7 +5,9 @@ function px_sphere(radius, filled = true) =
for(z = -radius; z < radius; z = z + 1) for(z = -radius; z < radius; z = z + 1)
let(v = [x, y, z]) let(v = [x, y, z])
if(norm(v) < radius) v if(norm(v) < radius) v
] : [ ] :
let(ishell = radius * radius - 2 * radius)
[
for(x = -radius; x < radius; x = x + 1) for(x = -radius; x < radius; x = x + 1)
for(y = -radius; y < radius; y = y + 1) for(y = -radius; y < radius; y = y + 1)
for(z = -radius; z < radius; z = z + 1) for(z = -radius; z < radius; z = z + 1)
@@ -13,6 +15,6 @@ function px_sphere(radius, filled = true) =
v = [x, y, z], v = [x, y, z],
leng = norm(v) leng = norm(v)
) )
if(leng < radius && (leng * leng) > (radius * radius - 2 * radius) ) v if(leng < radius && (leng * leng) > ishell) v
]; ];