Refactored center calculation

1 files changed, 6 insertions, 4 deletions

diff --git a/derelict.js b/derelict.js
index 739bbfa..573e7f9 100644
--- a/derelict.js
+++ b/derelict.js
@@ -102,12 +102,14 @@ function splitKillmails(clusters, killmail) {
 	return clusters
 }
 
+function averagePosition(positions) {
+	const sum = positions.reduce((sum, pos) => sum.add(pos), new THREE.Vector3())
+	return sum.divideScalar(positions.length)
+}
+
 function processKillmails(grid, killmails, icon) {
 	let clusters = killmails.reduce(splitKillmails, new Array())
-	let center = new THREE.Vector3()
-	let positions = clusters[0].map(km => km.victim.position)
-	positions.forEach(pos => center.add(new THREE.Vector3(pos.x, pos.y, pos.z)))
-	center.divideScalar(positions.length)
+	let center = averagePosition(clusters[0].map(km => km.victim.position))
 	clusters[0].sort((a, b) => a.killmail_time.localeCompare(b.killmail_time))
 	let elements = []
 	clusters[0].forEach(killmail => {