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fix knurling to work with cones (at least mostly)

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Adrian Mariano
2022-04-08 23:04:10 -04:00
parent a84dddb43e
commit 5c1c457e1d
1 changed files with 6 additions and 2 deletions
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4
knurling.scad
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@@ -50,6 +50,7 @@
// knurled_cylinder(l=30, r=20, count=20, profile=120, helix=30); // knurled_cylinder(l=30, r=20, count=20, profile=120, helix=30);
// knurled_cylinder(l=30, r=20, count=20, profile=120, helix=0.01); // knurled_cylinder(l=30, r=20, count=20, profile=120, helix=0.01);
// knurled_cylinder(l=30, r=20, count=20, profile=140, helix=60); // knurled_cylinder(l=30, r=20, count=20, profile=140, helix=60);
// knurled_cylinder(l=30, r1=20, r2=12, count=40, profile=90, helix=55);
module knurled_cylinder( module knurled_cylinder(
l, l,
r=undef, r1=undef, r2=undef, r=undef, r1=undef, r2=undef,
@@ -79,8 +80,11 @@ module knurled_cylinder(
vertices = concat( vertices = concat(
[ [
for (layer = [0:1:layers], pt=path) for (layer = [0:1:layers], pt=path)
let(scale_factor = lerp(1,r2/r1,layer/layers))
scale([scale_factor,scale_factor,1],
(layer%2)? [pt.x, pt.y, layer*knob_h-layers*knob_h/2] : (layer%2)? [pt.x, pt.y, layer*knob_h-layers*knob_h/2] :
rot(180/count, p=[pt.x, pt.y, layer*knob_h-layers*knob_h/2]) rot(180/count, p=[pt.x, pt.y, layer*knob_h-layers*knob_h/2])
)
], [ ], [
[0,0,-layers*knob_h/2], [0,0,-layers*knob_h/2],
[0,0, layers*knob_h/2] [0,0, layers*knob_h/2]