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resample

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Justin Lin
2021-05-22 12:08:36 +08:00
parent 85449ed29e
commit 22c6174812
1 changed files with 15 additions and 3 deletions
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18
src/surface/sf_curve.scad
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@@ -5,10 +5,23 @@ use <ptf/ptf_rotate.scad>;
module sf_curve(levels, points, thickness, depth, invert = false) { module sf_curve(levels, points, thickness, depth, invert = false) {
rows = len(levels); rows = len(levels);
columns = len(levels[0]); columns = len(levels[0]);
leng_points = len(points);
assert(leng_points > columns, "The length of `points` must be greater than the column length of `levels`");
to = leng_points - 1;
pts = (leng_points + 1 == columns) ? points :
// resample
let(diff = leng_points / columns)
[
for(i = [0:columns])
let(idx = floor(diff * i))
points[idx > to ? to : idx]
];
normal_vts = [ normal_vts = [
for(i = [0:columns - 1]) for(i = [0:columns - 1])
let(v = points[i + 1] - points[i]) let(v = pts[i + 1] - pts[i])
ptf_rotate(v / norm(v), [0, -90, 0]) ptf_rotate(v / norm(v), [0, -90, 0])
]; ];
@@ -19,11 +32,10 @@ module sf_curve(levels, points, thickness, depth, invert = false) {
for(y = [0:rows - 1]) for(y = [0:rows - 1])
[ [
for(x = [0:columns - 1]) for(x = [0:columns - 1])
let(p = points[x]) let(p = pts[x])
[p[0], y, p[2]] + normal_vts[x] * s[y][x][2] [p[0], y, p[2]] + normal_vts[x] * s[y][x][2]
] ]
]; ];
sf_solidify(_curve(surfaces[0]), _curve(surfaces[1])); sf_solidify(_curve(surfaces[0]), _curve(surfaces[1]));
} }