openscad/dotSCAD
1
0
Fork 0
mirror of https://github.com/JustinSDK/dotSCAD.git synced 2025-01-18 06:38:14 +01:00
Code Issues Releases Wiki Activity

fix error incenter

Browse Source
This commit is contained in:
Justin Lin 2021-07-10 15:37:25 +08:00
parent 21012a76fe
commit 7df79fd6fe
1 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/experimental/convex_offset.scad
View File

@ -8,11 +8,13 @@ function convex_offset(vertices, d) =
curr_p = vertices[i],
next_p = vertices[(i + 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,
a = acos((v1 * v2) / (norm(v1) * norm(v2))),
leng = -d * sin(a / 2),
v = tri_incenter([curr_p, next_p, pre_p]) - curr_p
leng_v1 = norm(v1),
leng_v2 = norm(v2),
a = acos((v1 * v2) / (leng_v1 * leng_v2)),
leng = -d / sin(a)
)
v / norm(v) * leng + curr_p
v1 / leng_v1 * leng + curr_p
];