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refactored

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Justin Lin
2017-05-21 20:40:29 +08:00
parent fb7884f6e4
commit bd310066d8
1 changed files with 6 additions and 11 deletions
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15
src/pie.scad
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@@ -11,11 +11,11 @@
**/ **/
include <__private__/__frags.scad>; include <__private__/__frags.scad>;
include <__private__/__ra_to_xy.scad>;
module pie(radius, angles) { module pie(radius, angles) {
frags = __frags(radius); a_step = 360 / __frags(radius);
a_step = 360 / frags;
m = floor(angles[0] / a_step) + 1; m = floor(angles[0] / a_step) + 1;
n = floor(angles[1] / a_step); n = floor(angles[1] / a_step);
@@ -23,8 +23,6 @@ module pie(radius, angles) {
half_a_step = a_step / 2; half_a_step = a_step / 2;
leng = radius * cos(half_a_step); leng = radius * cos(half_a_step);
function unit_xy(a) = [cos(a), sin(a)];
function edge_r_begin(a) = function edge_r_begin(a) =
leng / cos((m - 0.5) * a_step - a); leng / cos((m - 0.5) * a_step - a);
@@ -32,12 +30,9 @@ module pie(radius, angles) {
leng / cos((n + 0.5) * a_step - a); leng / cos((n + 0.5) * a_step - a);
points = concat( points = concat(
[[0, 0], edge_r_begin(angles[0]) * unit_xy(angles[0])], [[0, 0], __ra_to_xy(edge_r_begin(angles[0]), angles[0])],
[ [for(i = [m:n]) __ra_to_xy(radius, a_step * i)],
for(i = [m:n]) [__ra_to_xy(edge_r_end(angles[1]), angles[1])]
radius * unit_xy(a_step * i)
],
[edge_r_end(angles[1]) * unit_xy(angles[1])]
); );
polygon(points); polygon(points);