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add m_multiply

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Justin Lin
2019-04-28 15:32:37 +08:00
parent 87f5a89cbb
commit 07ed786ea1
1 changed files with 13 additions and 0 deletions
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src/m_multiply.scad Normal file
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@@ -0,0 +1,13 @@
function m_multiply(ma, mb) =
let(
c1 = [mb[0][0], mb[1][0], mb[2][0], mb[3][0]],
c2 = [mb[0][1], mb[1][1], mb[2][1], mb[3][1]],
c3 = [mb[0][2], mb[1][2], mb[2][2], mb[3][2]],
c4 = [mb[0][3], mb[1][3], mb[2][3], mb[3][3]]
)
[
[ma[0] * c1, ma[0] * c2, ma[0] * c3, ma[0] * c4],
[ma[1] * c1, ma[1] * c2, ma[1] * c3, ma[1] * c4],
[ma[2] * c1, ma[2] * c2, ma[2] * c3, ma[2] * c4],
[ma[3] * c1, ma[3] * c2, ma[3] * c3, ma[3] * c4]
];