5 files changed, 59 insertions, 11 deletions
diff --git a/assets/javascripts/rectangles/engine/builder.js b/assets/javascripts/rectangles/engine/builder.js
index 3452ecc..d5caeee 100644
--- a/assets/javascripts/rectangles/engine/builder.js
+++ b/assets/javascripts/rectangles/engine/builder.js
@@ -1,3 +1,4 @@
+
 var builder = new function(){
 	var base = this
 	
@@ -69,6 +70,7 @@ var builder = new function(){
 			el.x = region.x.a + width/2
 			el.y = height/2
 			el.z = region.y.a
+			el.side = FRONT
 			room.walls.push(el)
 			list.push(el)
 		}
@@ -80,6 +82,7 @@ var builder = new function(){
 			el.x = region.x.b - width/2
 			el.y = height/2
 			el.z = region.y.b
+			el.side = BACK
 			room.walls.push(el)
 			list.push(el)
 		}
@@ -91,6 +94,7 @@ var builder = new function(){
 			el.x = region.x.a
 			el.y = height/2
 			el.z = region.y.a + depth/2
+			el.side = LEFT
 			room.walls.push(el)
 			list.push(el)
 		}
@@ -102,6 +106,7 @@ var builder = new function(){
 			el.x = region.x.b
 			el.y = height/2
 			el.z = region.y.b - depth/2
+			el.side = RIGHT
 			room.walls.push(el)
 			list.push(el)
 		}
@@ -232,6 +237,7 @@ var builder = new function(){
 		el.y = 0
 		el.z = region.y.a + depth/2
 		el.rotationX = PI/2
+		el.side = FLOOR
 		return el
 	}
 	function make_ceiling(room, region){
@@ -246,15 +252,18 @@ var builder = new function(){
 		el.y = height
 		el.z = region.y.a + depth/2
 		el.rotationX = -PI/2
+		el.side = CEILING
 		return el
 	}
 
-	function make_wall(klass){
+	function make_wall(room, klass){
 		var el = new MX.Object3D(".face" + (klass || ""))
 		el.width = el.height = el.scaleX = el.scaleY = el.scaleZ = 1
 		el.z = el.y = el.x = 0
+		el.side = 0
 		el.type = "Face"
 		el.el.style.opacity = 1.0
+		el.side = 0
 		return el
 	}
 
diff --git a/assets/javascripts/rectangles/models/rect.js b/assets/javascripts/rectangles/models/rect.js
index 2d48e13..a5ae9bf 100644
--- a/assets/javascripts/rectangles/models/rect.js
+++ b/assets/javascripts/rectangles/models/rect.js
@@ -1,5 +1,3 @@
-var FRONT = 0x1, BACK = 0x2, LEFT = 0x4, RIGHT = 0x8,
-		FRONT_BACK = FRONT | BACK, LEFT_RIGHT = LEFT | RIGHT
 
 function sidesToString(sides){
 	var s = ""
diff --git a/assets/javascripts/rectangles/models/room.js b/assets/javascripts/rectangles/models/room.js
index c26efa9..34eed6a 100644
--- a/assets/javascripts/rectangles/models/room.js
+++ b/assets/javascripts/rectangles/models/room.js
@@ -1,3 +1,6 @@
+var FRONT = 0x1, BACK = 0x2, LEFT = 0x4, RIGHT = 0x8, FLOOR = 0x10, CEILING = 0x20
+		FRONT_BACK = FRONT | BACK, LEFT_RIGHT = LEFT | RIGHT, FLOOR_CEILING = FLOOR | CEILING
+
 window.Room = (function(){
 
 	var Room = function(opt){
@@ -48,9 +51,27 @@ window.Room = (function(){
 		})
 	}
 	
-	Room.prototype.add_wall = function(){
-	}
+	Room.prototype.group_walls = function(){
+		var base = this
+		var array_groups = {}, rect_groups = []
+		
+		sort_wall_els_by_x_then_z(base.walls)
+		
+		base.walls.forEach(function(wall){
+			var w = array_groups[ wall.side ]
+			if (w) {
+				w.forEach(function(ww){
+					
+				})
+			}
+			else {
+				array_groups[ wall.side ] = [[wall]]
+			}
+		})
 
+		return groups
+	}
+	
 	Room.prototype.clipTo = function(r){
 		// for each of this rect's regions split the region if necessary
 		var regions = this.regions
diff --git a/assets/javascripts/rectangles/models/wall.js b/assets/javascripts/rectangles/models/wall.js
index e25d2dd..b9705a2 100644
--- a/assets/javascripts/rectangles/models/wall.js
+++ b/assets/javascripts/rectangles/models/wall.js
@@ -1,20 +1,21 @@
-window.wall = (function(){
+window.Wall = (function(){
 
-	var wall = function(opt){
+	var Wall = function(opt){
 		this.id = opt.id
 		this.room = opt.room
 		this.rect = opt.rect
 		this.mx = []
+ 		this.els = []
 	}
 	
-	wall.prototype.toString = function(){
+	Wall.prototype.toString = function(){
 		return this.rect.toString()
 	}
 
-	wall.prototype.reset = function(){
+	Wall.prototype.reset = function(){
 	}
 	
-	wall.prototype.bind = function(){
+	Wall.prototype.bind = function(){
 		this.$walls.bind({
 			mouseover: function(){
 			},
@@ -26,6 +27,6 @@ window.wall = (function(){
 		})
 	}
 
-	return wall
+	return Wall
 
 })()
diff --git a/assets/javascripts/rectangles/util/sort.js b/assets/javascripts/rectangles/util/sort.js
index e53a09c..008e20a 100644
--- a/assets/javascripts/rectangles/util/sort.js
+++ b/assets/javascripts/rectangles/util/sort.js
@@ -57,3 +57,22 @@ function sort_rects_by_area(list){
 	           .sort(compare_rect_area)
 	           .map(function(r){ return r[1] })
 }
+
+
+function sort_wall_els_by_x_then_z(list){
+	return list.sort(function(a,b){
+		return sort_wall_els_by_x(a,b) || sort_wall_els_by_z(a,b)
+	})
+}
+
+function sort_wall_els_by_z(list){
+	return list.sort(function(a,b){
+		return a.z < b.z ? -1 : a.z == b.z ? 0 : 1
+	})
+}
+function sort_wall_els_by_x(a){
+	return list.sort(function(a,b){
+		return a.x < b.x ? -1 : a.x == b.x ? 0 : 1
+	})
+}
+