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add m_mirror

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Justin Lin
2019-04-30 14:51:38 +08:00
parent 8e96639d5a
commit f60d1558ce
1 changed files with 16 additions and 0 deletions
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16
src/m_mirror.scad Normal file
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@@ -0,0 +1,16 @@
function m_mirror(v) =
let(
nv = v / norm(v),
txx = -2* nv[0] * nv[0],
txy = -2* nv[0] * nv[1],
txz = -2* nv[0] * nv[2],
tyy = -2* nv[1] * nv[1],
tyz = -2* nv[1] * nv[2],
tzz = -2* nv[2] * nv[2]
)
[
[1 + txx, txy, txz, 0],
[txy, 1 + tyy, tyz, 0],
[txz, tyz, 1 + tzz, 0],
[0, 0, 0, 1]
];