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Inline parse function

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This commit is contained in:
Jordan Eldredge 2018-11-03 21:58:22 -07:00
parent 0bc45f6cfe
commit 802571cb4f
1 changed files with 17 additions and 21 deletions
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38
js/components/EqualizerWindow/spline.js
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@ -49,29 +49,25 @@ export function getCurvePoints(points, tension = 0.5, numOfSeg = 25) {
cache[++cachePtr] = 1; // 0,1,0,0
// calc. points
parse(pts, cache, l);
for (var j = 2, t; j < l; j += 2) {
let pt1 = pts[j],
pt2 = pts[j + 1],
pt3 = pts[j + 2],
pt4 = pts[j + 3],
t1x = (pt3 - pts[j - 2]) * tension,
t1y = (pt4 - pts[j - 1]) * tension,
t2x = (pts[j + 4] - pt1) * tension,
t2y = (pts[j + 5] - pt2) * tension;
function parse(pts, cache, l) {
for (var i = 2, t; i < l; i += 2) {
let pt1 = pts[i],
pt2 = pts[i + 1],
pt3 = pts[i + 2],
pt4 = pts[i + 3],
t1x = (pt3 - pts[i - 2]) * tension,
t1y = (pt4 - pts[i - 1]) * tension,
t2x = (pts[i + 4] - pt1) * tension,
t2y = (pts[i + 5] - pt2) * tension;
for (t = 0; t < numOfSeg; t++) {
let c = t << 2, //t * 4;
c1 = cache[c],
c2 = cache[c + 1],
c3 = cache[c + 2],
c4 = cache[c + 3];
for (t = 0; t < numOfSeg; t++) {
let c = t << 2, //t * 4;
c1 = cache[c],
c2 = cache[c + 1],
c3 = cache[c + 2],
c4 = cache[c + 3];
res[rPos++] = c1 * pt1 + c2 * pt3 + c3 * t1x + c4 * t2x;
res[rPos++] = c1 * pt2 + c2 * pt4 + c3 * t1y + c4 * t2y;
}
res[rPos++] = c1 * pt1 + c2 * pt3 + c3 * t1x + c4 * t2x;
res[rPos++] = c1 * pt2 + c2 * pt4 + c3 * t1y + c4 * t2y;
}
}