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Merge branch 'barnes-hut-coords' of https://github.com/vasturiano/d3-force-3d into vasturiano-barnes-hut-coords

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Mike Bostock 2017-09-23 11:01:16 -07:00
commit 6cadb82a47
1 changed files with 5 additions and 5 deletions
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10
src/manyBody.js
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@ -26,17 +26,17 @@ export default function() {
}
function accumulate(quad) {
var strength = 0, q, c, x, y, i;
var strength = 0, q, c, sumC = 0, x, y, i;
// For internal nodes, accumulate forces from child quadrants.
if (quad.length) {
for (x = y = i = 0; i < 4; ++i) {
if ((q = quad[i]) && (c = q.value)) {
strength += c, x += c * q.x, y += c * q.y;
if ((q = quad[i]) && (c = Math.abs(q.value))) {
strength += q.value, sumC += c, x += c * q.x, y += c * q.y;
}
}
quad.x = x / strength;
quad.y = y / strength;
quad.x = x / sumC;
quad.y = y / sumC;
}
// For leaf nodes, accumulate forces from coincident quadrants.