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fix d error

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This commit is contained in:
Justin Lin 2021-06-01 17:18:03 +08:00
parent 009230c8f8
commit 32c407ff0b
1 changed files with 9 additions and 9 deletions
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18
src/_impl/_bspline_curve_impl.scad
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@ -21,29 +21,29 @@ function _bspline_curve_s(s, end, t, knots) =
function _bspline_curve_alpha(i, l, t, degree, knots) =
(t - knots[i]) / (knots[i + degree + 1 - l] - knots[i]);
function _bspline_curve_nvi(v, i, l, t, degree, knots) =
function _bspline_curve_nvi(v, i, l, t, degree, knots, d) =
let(
alpha = _bspline_curve_alpha(i, l, t, degree, knots)
)
[[for(j = 0; j< degree + 1; j = j + 1) ((1 - alpha) * v[i - 1][j] + alpha * v[i][j])]];
[[for(j = 0; j< d + 1; j = j + 1) ((1 - alpha) * v[i - 1][j] + alpha * v[i][j])]];
function _bspline_curve_nvl(v, l, s, t, degree, knots, i) =
function _bspline_curve_nvl(v, l, s, t, degree, knots, d, i) =
i == (s - degree - 1 + l) ? v :
let(
leng_v = len(v),
nvi = _bspline_curve_nvi(v, i, l, t, degree, knots),
nvi = _bspline_curve_nvi(v, i, l, t, degree, knots, d),
nv = concat(
[for(j = 0; j < i; j = j + 1) v[j]],
nvi,
[for(j = i + 1; j < leng_v; j = j + 1) v[j]]
)
)
_bspline_curve_nvl(nv, l, s, t, degree, knots, i - 1);
_bspline_curve_nvl(nv, l, s, t, degree, knots, d, i - 1);
function _bspline_curve_v(v, s, t, degree, knots, l = 1) =
function _bspline_curve_v(v, s, t, degree, knots, d, l = 1) =
l > degree + 1 ? v :
let(nv = _bspline_curve_nvl(v, l, s, t, degree, knots, s))
_bspline_curve_v(nv, s, t, degree, knots, l + 1);
let(nv = _bspline_curve_nvl(v, l, s, t, degree, knots, d, s))
_bspline_curve_v(nv, s, t, degree, knots, d, l + 1);
function _bspline_curve_interpolate(t, degree, points, knots, weights) =
let(
@ -58,7 +58,7 @@ function _bspline_curve_interpolate(t, degree, points, knots, weights) =
],
ts = _bspline_curve_ts(t, degree, kts),
s = ts[1],
nv = _bspline_curve_v(v, s, ts[0], degree, kts)
nv = _bspline_curve_v(v, s, ts[0], degree, kts, d)
)
[for(i = 0; i < d; i = i + 1) nv[s][i] / nv[s][d]];