polygonal lasso

1 files changed, 9 insertions, 0 deletions

diff --git a/assets/javascripts/math/point.js b/assets/javascripts/math/point.js
index 354be00..5a5d0db 100644
--- a/assets/javascripts/math/point.js
+++ b/assets/javascripts/math/point.js
@@ -5,6 +5,15 @@
 		this.a = a
 		this.b = b
 	}
+
+	point.prototype.distanceTo = function(p){
+	  return Math.sqrt(this.dot(p))
+	}
+	point.prototype.dot = function(p){
+	  return Math.pow(this.a - p.a, 2) + Math.pow(this.b - p.b, 2)
+	}
+
+
 	point.prototype.magnitude = function(){
 		return this.b-this.a
 	}