1 files changed, 86 insertions, 0 deletions
diff --git a/client/splash/face/util.js b/client/splash/face/util.js
new file mode 100644
index 00000000..e6237316
--- /dev/null
+++ b/client/splash/face/util.js
@@ -0,0 +1,86 @@
+
+import { Vector3, Geometry } from 'three'
+import { FACE_SCALE, LINE_THICKNESS } from '../constants'
+
+export function getLineGeometry(points) {
+  return [
+    points.slice(0, 17),
+    points.slice(17, 22),
+    points.slice(22, 27),
+    points.slice(27, 31),
+    points.slice(31, 36),
+    points.slice(36, 42),
+    points.slice(42, 48),
+    points.slice(48)
+  ].map((a, i) => {
+    const geometry = new Geometry()
+    a.forEach(p => geometry.vertices.push(p))
+    if (i > 4) {
+      geometry.vertices.push(a[0])
+    }
+    return geometry
+  })
+}
+
+export function updateLineGeometry(points, meshes) {
+  getLineGeometry(points).forEach((geometry, i) => {
+    const [line, mesh] = meshes[i]
+    line.setGeometry(geometry, () => LINE_THICKNESS)
+    mesh.geometry.vertices = line.geometry.vertices
+    mesh.geometry.verticesNeedUpdate = true
+  })
+}
+
+export function lerp(n, a, b) {
+  return (b - a) * n + a
+}
+
+export function lerpPoint(n, A, B, C) {
+  C.x = lerp(n, A.x, B.x)
+  C.y = lerp(n, A.y, B.y)
+  C.z = lerp(n, A.z, B.z)
+}
+
+export function lerpPoints(n, A, B, C) {
+  for (let i = 0, len = A.length; i < len; i++) {
+    lerpPoint(n, A[i], B[i], C[i])
+  }
+}
+
+export function updateCubeGeometry(points, cubes) {
+  cubes.forEach((cube, i) => {
+    const p = points[i]
+    cube.position.set(p.x, p.y, p.z)
+  })
+}
+
+export function updateFace(buf, cubes, meshes) {
+  updateCubeGeometry(buf, cubes)
+  updateLineGeometry(buf, meshes)
+}
+
+export function getBounds(obj) {
+  return obj.reduce((a, p) => {
+    return [
+      Math.min(a[0], p[0]),
+      Math.max(a[1], p[0]),
+      Math.min(a[2], p[1]),
+      Math.max(a[3], p[1]),
+      Math.min(a[4], p[2]),
+      Math.max(a[5], p[2]),
+    ]
+  }, [Infinity, -Infinity, Infinity, -Infinity, Infinity, -Infinity])
+}
+
+export function recenter(obj) {
+  const bounds = getBounds(obj)
+  const xWidth = (bounds[1] - bounds[0]) / 2
+  const yWidth = (bounds[3] - bounds[2]) / -3
+  const zWidth = (bounds[5] - bounds[4]) / 2
+  return obj.map(p => {
+    p[0] = p[0] - bounds[0] - xWidth
+    p[1] = -p[1] + bounds[1] + yWidth
+    p[2] = p[2] - bounds[2] + zWidth
+    return new Vector3(p[0] * FACE_SCALE, p[1] * FACE_SCALE, p[2] * FACE_SCALE)
+  })
+}