2 files changed, 25 insertions, 0 deletions
diff --git a/src/utils/objectEquivalence.js b/src/utils/objectEquivalence.js
new file mode 100644
index 0000000..e33dd76
--- /dev/null
+++ b/src/utils/objectEquivalence.js
@@ -0,0 +1,14 @@
+const equivalence = (obj1, obj2) => {
+  if (obj1 === null) {
+    return obj1 === null;
+  }
+  return Object.keys(obj1).every(key => {
+    if (obj2[key] === undefined) {
+      return false;
+    }
+    if (typeof obj1[key] === 'object') {
+      return equivalence(obj1[key], obj2[key]);
+    }
+    return obj1[key] === obj2[key];
+  });
+};
diff --git a/src/utils/unitizeVector.js b/src/utils/unitizeVector.js
new file mode 100644
index 0000000..6297ca8
--- /dev/null
+++ b/src/utils/unitizeVector.js
@@ -0,0 +1,11 @@
+const unitize = (vector) => {
+  // Not *technically* a unit vector, but has x,y components of |magnitude| = 1
+  Object.keys(vector).forEach((key) => {
+    if (typeof vector[key] === 'object') {
+      vector[key] = vector[key].unitize();
+    } else if (typeof vector[key] === 'number') {
+      vector[key] = (vector[key] === 0 ? 0 : vector[key] / Math.abs(vector[key]));
+    }
+  });
+  return vector;
+}
+\ No newline at end of file