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Cleanup

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This commit is contained in:
be5invis 2023-02-25 05:20:24 -08:00
parent f0196ec1e4
commit 6a307b5973
3 changed files with 25 additions and 26 deletions
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46
font-src/gen/finalize/glyphs.mjs
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@ -145,7 +145,6 @@ class QuadifySink {
let c = this.lastContour;
c = this.alignHVKnots(c);
c = this.cleanupOccurrentKnots1(c);
c = this.cleanupOccurrentKnots2(c);
c = this.removeColinearKnots(c);
this.contours.push(c);
}
@ -189,28 +188,27 @@ class QuadifySink {
alignY.apply();
return c;
}
// Occurrent cleanup -- corner-corner
cleanupOccurrentKnots1(c0) {
const c = [c0[0]];
for (let i = 1; i < c0.length; i++) {
let drops = [];
for (let i = 0; i < c0.length; i++) drops[i] = false;
for (let i = 0; i < c0.length; i++) {
const iPost = (i + 1) % c0.length;
const pre = c0[i],
post = c0[iPost];
if (
!(
c0[i].type === Point.Type.Corner &&
c0[i - 1].type === Point.Type.Corner &&
isOccurrent(c0[i], c0[i - 1])
)
pre.type === Point.Type.Corner &&
post.type === Point.Type.Corner &&
isOccurrent(pre, post)
) {
c.push(c0[i]);
drops[iPost] = true;
}
}
return c;
}
cleanupOccurrentKnots2(c0) {
const c = c0.slice(0);
const zFirst = c[0],
zLast = c[c.length - 1];
if (isOccurrent(zFirst, zLast)) c.pop();
return c;
return dropBy(c0, drops);
}
removeColinearKnots(c0) {
const c = c0.slice(0);
let lengthBefore = c.length,
@ -288,12 +286,7 @@ const GetY = z => z.y;
const SetY = (z, y) => (z.y = y);
function isOccurrent(zFirst, zLast) {
return (
zFirst.type === Point.Type.Corner &&
zLast.type === Point.Type.Corner &&
zFirst.x === zLast.x &&
zFirst.y === zLast.y
);
return zFirst.x === zLast.x && zFirst.y === zLast.y;
}
function occurrentPrecisionEqual(a, b) {
return Math.abs(a - b) < CurveUtil.OCCURRENT_PRECISION;
@ -304,3 +297,10 @@ function aligned(a, b, c) {
function between(a, b, c) {
return (a <= b && b <= c) || (a >= b && b >= c);
}
// Dropping helper
function dropBy(a, d) {
let r = [];
for (let i = 0; i < a.length; i++) if (!d[i]) r.push(a[i]);
return r;
}