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refactored

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This commit is contained in:
Justin Lin
2017-05-25 09:45:43 +08:00
parent b4c8ab04e8
commit 541cdf66a5
2 changed files with 22 additions and 19 deletions
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20
src/__private__/__shape_pie.scad Normal file
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@@ -0,0 +1,20 @@
function __shape_pie(radius, angle) =
let(
frags = __frags(radius),
a_step = 360 / frags,
leng = radius * cos(a_step / 2),
angles = __is_vector(angle) ? angle : [0:angle],
m = floor(angles[0] / a_step) + 1,
n = floor(angles[1] / a_step),
edge_r_begin = leng / cos((m - 0.5) * a_step - angles[0]),
edge_r_end = leng / cos((n + 0.5) * a_step - angles[1]),
shape_pts = concat(
[[0, 0], __ra_to_xy(edge_r_begin, angles[0])],
m > n ? [] : [
for(i = [m:n])
let(a = a_step * i)
__ra_to_xy(radius, a)
],
angles[1] == a_step * n ? [] : [__ra_to_xy(edge_r_end, angles[1])]
)
) shape_pts;

21
src/shape_pie.scad
View File

@@ -15,24 +15,7 @@
include <__private__/__frags.scad>; include <__private__/__frags.scad>;
include <__private__/__is_vector.scad>; include <__private__/__is_vector.scad>;
include <__private__/__ra_to_xy.scad>; include <__private__/__ra_to_xy.scad>;
include <__private__/__shape_pie.scad>;
function shape_pie(radius, angle) = function shape_pie(radius, angle) =
let( __shape_pie(radius, angle);
frags = __frags(radius),
a_step = 360 / frags,
leng = radius * cos(a_step / 2),
angles = __is_vector(angle) ? angle : [0:angle],
m = floor(angles[0] / a_step) + 1,
n = floor(angles[1] / a_step),
edge_r_begin = leng / cos((m - 0.5) * a_step - angles[0]),
edge_r_end = leng / cos((n + 0.5) * a_step - angles[1]),
shape_pts = concat(
[[0, 0], __ra_to_xy(edge_r_begin, angles[0])],
m > n ? [] : [
for(i = [m:n])
let(a = a_step * i)
__ra_to_xy(radius, a)
],
angles[1] == a_step * n ? [] : [__ra_to_xy(edge_r_end, angles[1])]
)
) shape_pts;