1 files changed, 12 insertions, 2 deletions
diff --git a/vec2.js b/vec2.js
index 973613f..f4d6a84 100644
--- a/vec2.js
+++ b/vec2.js
@@ -22,6 +22,9 @@ vec2.prototype.abs = function(){
 vec2.prototype.midpoint = function(){
 	return lerp(0.5, this.a, this.b)
 }
+vec2.prototype.eq = function(v){
+	return this.a == v.a && this.b == v.b
+}
 vec2.prototype.add = function(n){
 	this.a += n
 	this.b += n
@@ -41,9 +44,16 @@ vec2.prototype.div = function(n){
 vec2.prototype.contains = function(n){
 	return this.a <= n && n <= this.b
 }
-// assumes (vec2)v falls to the right of (vec2)this
 vec2.prototype.intersects = function(v){
-  return (this.b > v.a && this.b < v.b) || (v.b > this.a && v.b < this.b)
+	if (this.a < v.a) {
+		return (v.a < this.b && this.b <= v.b) || (this.a < v.b && v.b <= this.b)
+	}
+	else if (this.a == v.a) {
+		return true
+	}
+	else if (this.a > v.a) {
+		return (this.a < v.b && v.b <= this.b) || (v.a < this.b && this.b <= v.b)
+	}
 }
 vec2.prototype.union = function(v){
 	if (this.intersects(v)) {