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for (let i = 0, len = points.length; i < len; i++) {
const point = points[i];
if (isLoop) {
prevPoint = points[i ? i - 1 : len - 1];
nextPoint = points[(i + 1) % len];
} else {
if (i === 0 || i === len - 1) {
cps.push(point);
continue;
} else {
prevPoint = points[i - 1];
nextPoint = points[i + 1];
}
}
let v = [];
v = vec2.sub(v, nextPoint, prevPoint);
v = vec2.scale(v, v, smooth);
let d0 = vec2.distance(point, prevPoint);
let d1 = vec2.distance(point, nextPoint);
const sum = d0 + d1;
if (sum !== 0) {
d0 /= sum;
d1 /= sum;
}
const v1 = vec2.scale([], v, -d0);
const v2 = vec2.scale([], v, d1);
let cp0 = vec2.add([], point, v1);
let cp1 = vec2.add([], point, v2);
for (let i = 0, len = points.length; i < len; i++) {
const point = points[i];
if (isLoop) {
prevPoint = points[i ? i - 1 : len - 1];
nextPoint = points[(i + 1) % len];
} else {
if (i === 0 || i === len - 1) {
cps.push(point);
continue;
} else {
prevPoint = points[i - 1];
nextPoint = points[i + 1];
}
}
let v = [];
v = vector2.sub(v, nextPoint, prevPoint);
v = vector2.scale(v, v, smooth);
let d0 = vector2.distance(point, prevPoint);
let d1 = vector2.distance(point, nextPoint);
const sum = d0 + d1;
if (sum !== 0) {
d0 /= sum;
d1 /= sum;
}
const v1 = vector2.scale([], v, -d0);
const v2 = vector2.scale([], v, d1);
let cp0 = vector2.add([], point, v1);
let cp1 = vector2.add([], point, v2);