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Round poly now perfectly fits radius

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Quinn
2022-01-09 14:14:49 -08:00
parent 56d4b79652
commit 82722a63b0
1 changed files with 3 additions and 4 deletions
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round_polygon.scad
+3 -4
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@@ -14,7 +14,7 @@ oct = [
[corn,-corn] [corn,-corn]
]; ];
function scale_xy(xy, m) = let(nz_xy = sign(xy == 0 ? 1 : xy) * max(abs(xy), 0.0000001)) [ for (i = m) [i.x * nz_xy, i.y * nz_xy]]; function scale_xy(shape, xy, allow_zero = false) = let(s = allow_zero ? xy : sign(xy == 0 ? 1 : xy) * max(abs(xy), 0.0001)) [ for (i = shape) [i.x * s, i.y * s]];
function normalize(vec) = vec / norm(vec); function normalize(vec) = vec / norm(vec);
@@ -28,14 +28,13 @@ module round_poly(shape, radius, sharpness = 0){
corner_r = lerp(radius, 0, sharpness); corner_r = lerp(radius, 0, sharpness);
corner_offset = lerp(0, radius, sharpness); corner_offset = lerp(0, radius, sharpness);
minkowski(){ minkowski(){
polygon(add_radius(scale_xy(0, shape),corner_offset)); polygon(add_radius(scale_xy(shape,0),corner_offset));
circle(max(corner_r, 0.0001)); circle(max(corner_r, 0.0001));
} }
} }
radius = 3; radius = 1;
round_poly(oct,radius, $t); round_poly(oct,radius, $t);