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refactor

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This commit is contained in:
Justin Lin 2019-06-15 20:53:54 +08:00
parent 93d7c0239d
commit 2110b9cb31
1 changed files with 19 additions and 26 deletions
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45
src/ellipse_extrude.scad
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@ -15,41 +15,34 @@ module ellipse_extrude(semi_minor_axis, height, center = false, convexity = 10,
);
angle = asin(h / semi_minor_axis) / slices;
function f_extrude(i = 1) =
i <= slices ?
concat(
[
[
cos(angle * i) / cos(angle * (i - 1)),
semi_minor_axis * sin(angle * i)
]
],
f_extrude(i + 1)
) : [];
f_extrude = [
for(i = 1; i <= slices; i = i + 1)
[
cos(angle * i) / cos(angle * (i - 1)),
semi_minor_axis * sin(angle * i)
]
];
len_f_extrude = len(f_extrude);
fzs = f_extrude();
len_fzs = len(fzs);
accm_fs =
[
for(i = 0, pre_f = 1; i < len_f_extrude; pre_f = pre_f * f_extrude[i][0], i = i + 1)
pre_f * f_extrude[i][0]
];
function accm_fs(pre_f = 1, i = 0) =
i < len_fzs ?
concat(
[pre_f * fzs[i][0]],
accm_fs(pre_f * fzs[i][0], i + 1)
) : [];
child_fs = concat([1], accm_fs());
child_fs = concat([1], accm_fs);
pre_zs = concat(
[0],
[
for(i = 0; i < len_fzs; i = i + 1)
fzs[i][1]
for(i = 0; i < len_f_extrude; i = i + 1)
f_extrude[i][1]
]
);
module extrude() {
for(i = [0:len_fzs - 1]) {
f = fzs[i][0];
z = fzs[i][1];
for(i = [0:len_f_extrude - 1]) {
f = f_extrude[i][0];
z = f_extrude[i][1];
translate([0, 0, pre_zs[i]])
rotate(-twist / slices * i)