vec.equals comparator

1 files changed, 11 insertions, 5 deletions

diff --git a/utils/vec.js b/utils/vec.js
index 3996fc2..d595989 100644
--- a/utils/vec.js
+++ b/utils/vec.js
@@ -6,23 +6,29 @@ exports.mult = function(vec, scal){
   return vec;
 }
 
-function elem(orig, vec, op){
+exports.elem = function(orig, vec, op){
   let comb = [];
   for (let i = 0; i < orig.length; i++){
     comb.push(op(vec[i],orig[i]));
   }
   return comb;
 }
-exports.elem = elem;
+
+exports.equals = function(orig, vec){
+  for (let i = 0; i < orig.length; i++){
+    if (orig[i] != vec[i]) return false;
+  }
+  return true;
+}
 
 exports.add = function(orig, vec){
-  return elem(orig, vec, (a,b) => a+b);
+  return exports.elem(orig, vec, (a,b) => a+b);
 }
 exports.sub = function(orig, vec){
-  return elem(orig, vec, (a,b) => a-b);
+  return exports.elem(orig, vec, (a,b) => a-b);
 }
 exports.dot = function(orig,vec){
-  return elem(orig, vec, (a,b) => a*b);
+  return exports.elem(orig, vec, (a,b) => a*b);
 }
 exports.tileToChar = function(orig){
   return exports.dot(orig, [8,16]);