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curvature

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Pomax
2020-08-27 14:59:08 -07:00
parent 0730e3dda4
commit 17d71c7d70
22 changed files with 265 additions and 249 deletions
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10
docs/js/custom-element/lib/bezierjs/utils.js
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@@ -647,11 +647,7 @@ const utils = {
return [];
},
curvature: function (t, points, _3d, kOnly) {
const dpoints = utils.derive(points);
const d1 = dpoints[0];
const d2 = dpoints[1];
curvature: function (t, d1, d2, _3d, kOnly) {
let num,
dnm,
adk,
@@ -705,8 +701,8 @@ const utils = {
if (!kOnly) {
// compute k'(t) based on the interval before, and after it,
// to at least try to not introduce forward/backward pass bias.
const pk = utils.curvature(t - 0.001, points, _3d, true).k;
const nk = utils.curvature(t + 0.001, points, _3d, true).k;
const pk = utils.curvature(t - 0.001, d1, d2, _3d, true).k;
const nk = utils.curvature(t + 0.001, d1, d2, _3d, true).k;
dk = (nk - k + (k - pk)) / 2;
adk = (abs(nk - k) + abs(k - pk)) / 2;
}