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fix error incenter

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Justin Lin
2021-07-10 15:37:25 +08:00
parent 21012a76fe
commit 7df79fd6fe
1 changed files with 7 additions and 5 deletions
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12
src/experimental/convex_offset.scad
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@@ -8,11 +8,13 @@ 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],
v1 = pre_p - curr_p, c = tri_incenter([curr_p, next_p, pre_p]),
v1 = c - curr_p,
v2 = next_p - curr_p, v2 = next_p - curr_p,
a = acos((v1 * v2) / (norm(v1) * norm(v2))), leng_v1 = norm(v1),
leng = -d * sin(a / 2), leng_v2 = norm(v2),
v = tri_incenter([curr_p, next_p, pre_p]) - curr_p a = acos((v1 * v2) / (leng_v1 * leng_v2)),
leng = -d / sin(a)
) )
v / norm(v) * leng + curr_p v1 / leng_v1 * leng + curr_p
]; ];