RegionList

1 files changed, 10 insertions, 0 deletions

diff --git a/public/assets/javascripts/rectangles/engine/shapes/polyline.js b/public/assets/javascripts/rectangles/engine/shapes/polyline.js
index 3c4e9c3..99c8fda 100644
--- a/public/assets/javascripts/rectangles/engine/shapes/polyline.js
+++ b/public/assets/javascripts/rectangles/engine/shapes/polyline.js
@@ -134,6 +134,16 @@ var Polyline = Fiber.extend(function(base){
   exports.rebuild = function(){
     this.mx.rebuild()
   }
+  exports.getSegments = function(){
+    if (this.points.length == 1) {
+      return []
+    }
+    var segments = []
+    for (var i = 1; i < this.points.length; i++) {
+      segments.push( [ this.points[i-1], this.points[i] ] )
+    }
+    return segments
+  }
   exports.serialize = function(){
     return this.points.map(function(point){ return [point.a, point.b] })
   }