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refactor: re-orgnize formula

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Justin Lin
2022-05-01 16:19:40 +08:00
parent e16a869a3f
commit 7f4c25b9e3
1 changed files with 3 additions and 7 deletions
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10
src/experimental/convex_offset.scad
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@@ -8,13 +8,9 @@ function convex_offset(vertices, d) =
curr_p = vertices[i], curr_p = vertices[i],
next_p = vertices[(i + 1) % leng_vertices], next_p = vertices[(i + 1) % leng_vertices],
pre_p = vertices[(i + leng_vertices - 1) % leng_vertices], pre_p = vertices[(i + leng_vertices - 1) % leng_vertices],
c = tri_incenter([curr_p, next_p, pre_p]), v1 = tri_incenter([curr_p, next_p, pre_p]) - curr_p,
v1 = c - curr_p,
v2 = next_p - curr_p, v2 = next_p - curr_p,
leng_v1 = norm(v1), s = -d / sqrt(v1 * v1 - (v1 * v2) ^ 2 / (v2 * v2))
leng_v2 = norm(v2),
a = acos((v1 * v2) / (leng_v1 * leng_v2)),
leng = -d / sin(a)
) )
v1 / leng_v1 * leng + curr_p v1 * s + curr_p
]; ];