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-rw-r--r--assets/javascripts/rectangles/models/vec2.js5
1 files changed, 5 insertions, 0 deletions
diff --git a/assets/javascripts/rectangles/models/vec2.js b/assets/javascripts/rectangles/models/vec2.js
index 4e2ad36..3105fec 100644
--- a/assets/javascripts/rectangles/models/vec2.js
+++ b/assets/javascripts/rectangles/models/vec2.js
@@ -28,23 +28,28 @@ vec2.prototype.eq = function(v){
vec2.prototype.add = function(n){
this.a += n
this.b += n
+ return this
}
vec2.prototype.sub = function(n){
this.a -= n
this.b -= n
+ return this
}
vec2.prototype.mul = function(n){
this.a *= n
this.b *= n
+ return this
}
vec2.prototype.div = function(n){
this.a /= n
this.b /= n
+ return this
}
vec2.normalize = function(){
var dim = max(this.a, this.b)
this.a = this.a/dim
this.b = this.b/dim
+ return this
}
vec2.prototype.contains = function(n){
return this.a <= n && n <= this.b