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consider two or three points

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Justin Lin
2019-05-13 09:50:53 +08:00
parent f985e13231
commit f33d6c5671
1 changed files with 13 additions and 2 deletions
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15
src/along_with.scad
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@@ -34,6 +34,13 @@ module along_with(points, angles, twist = 0, scale = 1.0) {
// get rotation matrice for sections
identity_matrix = [
[1, 0, 0, 0],
[0, 1, 0, 0],
[0, 0, 1, 0],
[0, 0, 0, 1]
];
function local_ang_vects(j) =
j == 0 ? [] : local_ang_vects_sub(j);
@@ -52,12 +59,16 @@ module along_with(points, angles, twist = 0, scale = 1.0) {
leng_rot_matrice_minus_one = leng_rot_matrice - 1,
leng_rot_matrice_minus_two = leng_rot_matrice - 2
)
i == leng_rot_matrice - 2 ?
leng_rot_matrice == 0 ? [identity_matrix] : (
leng_rot_matrice == 1 ? [rot_matrice[0], identity_matrix] : (
i == leng_rot_matrice_minus_two ?
[
rot_matrice[leng_rot_matrice_minus_one],
rot_matrice[leng_rot_matrice_minus_two] * rot_matrice[leng_rot_matrice_minus_one]
]
: cumulated_rot_matrice_sub(i, rot_matrice);
: cumulated_rot_matrice_sub(i, rot_matrice)
)
);
function cumulated_rot_matrice_sub(i, rot_matrice) =
let(