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Code Issues Releases Wiki Activity

a matrix is enough

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Justin Lin
2019-05-01 21:21:42 +08:00
parent db004887d5
commit e1bf720acb
1 changed files with 7 additions and 36 deletions
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39
src/__private__/__m_shearing.scad
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@@ -1,44 +1,15 @@
function __m_shearing_sx(sx) =
function __m_shearing(sx, sy, sz) =
let(
sx_along_y = sx[0],
sx_along_z = sx[1]
)
[
[1, sx_along_y, sx_along_z, 0],
[0, 1, 0, 0],
[0, 0, 1, 0],
[0, 0, 0, 1]
];
function __m_shearing_sy(sy) =
let(
sx_along_z = sx[1],
sy_along_x = sy[0],
sy_along_z = sy[1]
)
[
[1, 0, 0, 0],
[sy_along_x, 1, sy_along_z, 0],
[0, 0, 1, 0],
[0, 0, 0, 1]
];
function __m_shearing_sz(sz) =
let(
sy_along_z = sy[1],
sz_along_x = sz[0],
sz_along_y = sz[1]
)
[
[1, 0, 0, 0],
[0, 1, 0, 0],
[1, sx_along_y, sx_along_z, 0],
[sy_along_x, 1, sy_along_z, 0],
[sz_along_x, sz_along_y, 1, 0],
[0, 0, 0, 1]
];
function __m_shearing(sx, sy, sz) =
__m_multiply(
__m_shearing_sz(sz),
__m_multiply(
__m_shearing_sy(sy),
__m_shearing_sx(sx)
)
);