Wrecks are now automatically translated

1 files changed, 19 insertions, 11 deletions

diff --git a/derelict.js b/derelict.js
index 6605fe3..4839fe6 100644
--- a/derelict.js
+++ b/derelict.js
@@ -27,12 +27,14 @@ const killmails = [
 	{id: 91831050, hash: "29b01fa248efffe2ebe7dc220e584ed779a91b28"},
 ]
 
+const SCALE = 10000
+
 init()
 animate()
 
-function Wreck(x, y, z) {
+function Wreck(vec3) {
 	const point = new THREE.Object3D()
-	point.position.fromArray([x, y, z])
+	point.position.copy(vec3)
 
 	const div = document.createElement('div')
 	div.className = 'wreck'
@@ -55,6 +57,20 @@ function loadWreckIcon() {
 		})
 }
 
+function processKillmails(killmails) {
+	let center = new THREE.Vector3()
+	const positions = killmails.map(km => km.victim.position)
+	positions.forEach(pos => center.add(new THREE.Vector3(pos.x, pos.y, pos.z)))
+	center.divideScalar(positions.length)
+	killmails.forEach(km => {
+		const pos = km.victim.position
+		const vec3 = new THREE.Vector3(pos.x, pos.y, pos.z)
+		vec3.sub(center)
+		vec3.divideScalar(SCALE)
+		scene.add(Wreck(vec3))
+	})
+}
+
 function init() {
 	camera = new THREE.PerspectiveCamera(80, window.innerWidth / window.innerHeight, 0.1, 100)
 	camera.position.set(8, 8, 8)
@@ -67,15 +83,7 @@ function init() {
 			const retrieve = km => fetch(url(km)).then(response => response.json())
 			return Promise.all(killmails.map(retrieve))
 		})
-		.then(killmails => {
-			killmails.forEach(km => {
-				const pos = km.victim.position
-				pos.x += 921513306266.4209 // TODO: Calculate average instead of magic translation.
-				pos.y -= 490635208815.2254
-				pos.z -= 916212889453.0426
-				scene.add(Wreck(pos.x / 10000, pos.y / 10000, pos.z / 10000))
-			})
-		})
+		.then(processKillmails)
 
 	const grid = new THREE.GridHelper(30, 30)
 	scene.add(grid)