shorter stack traces

2 files changed, 31 insertions, 16 deletions

diff --git a/public/assets/javascripts/rectangles/models/rect.js b/public/assets/javascripts/rectangles/models/rect.js
index 8b6a666..f724ecc 100644
--- a/public/assets/javascripts/rectangles/models/rect.js
+++ b/public/assets/javascripts/rectangles/models/rect.js
@@ -148,20 +148,22 @@
 				var rn = new Rect(x[0], y[0])
 				rn.id = rz.id
 				rn.sides = ((x[1] | y[1]) & sides)
-// 				if (r.intersects(rn)) {
-// 					rn.sides = 0
-// 				}
-				// if (r.x.b == rn.x.a) {
-// 						rn.sides &= ~LEFT
-// 				}
-// 				if (rn.x.b == r.x.a) {
-// 					rn.sides &= ~RIGHT
+
+				if (r.x.contains(rn.x.a)) {
+					rn.sides &= ~ LEFT
+				}
+				if (r.x.contains(rn.x.b)) {
+					rn.sides &= ~ RIGHT
+				}
+// 				if (r.y.contains(rn.y.a)) {
+// 					rn.sides &= ~ FRONT
 // 				}
-// 				if (r.y.b == rn.y.a) {
-// 					rn.sides &= ~FRONT
+// 				if (r.y.contains(rn.y.a)) {
+// 					rn.sides &= ~ BACK
 // 				}
-// 				if (rn.y.b == r.y.a) {
-// 					rn.sides &= ~BACK
+
+// 				if (r.intersects(rn)) {
+// 					rn.sides = 0
 // 				}
 				rn.focused = rz.focused
 				splits.push(rn)
diff --git a/public/assets/javascripts/rectangles/models/vec2.js b/public/assets/javascripts/rectangles/models/vec2.js
index 4480473..447c7a3 100644
--- a/public/assets/javascripts/rectangles/models/vec2.js
+++ b/public/assets/javascripts/rectangles/models/vec2.js
@@ -110,7 +110,7 @@
 	// given two vectors, test how they overlap
 	// return the set of overlapping segments in the initial vector, labelled with sides
 	vec2.prototype.split = function(v, left, right){
-		var intervals = []
+		var intervals = [], _len
 
 		if (this.eq(v)) {
 			intervals.push([ new vec2( this.a, this.b ), left | right ])
@@ -119,12 +119,12 @@
 		// a---A===b---B  (rightways overlap)
 		else if (this.contains(v.a) && v.contains(this.b)) {
 			intervals.push([ new vec2( this.a,    v.a ), left  ])
-			intervals.push([ new vec2(    v.a, this.b ), 0 ])
+			intervals.push([ new vec2(    v.a, this.b ), right ])
 		}
 
     // A---a===B---b  (leftways overlap)
 		else if (v.contains(this.a) && this.contains(v.b)) {
-			intervals.push([ new vec2( this.a,    v.b ), 0  ])
+			intervals.push([ new vec2( this.a,    v.b ), left  ])
 			intervals.push([ new vec2(    v.b, this.b ), right ])
 		}
 	
@@ -137,7 +137,20 @@
 		
 		// A---a===b---B  (contained in v)
 		else { // if (v.contains(this.a) && v.contains(v.b)) {
-			intervals.push([ new vec2( this.a, this.b ), 0 ])
+			intervals.push([ new vec2( this.a, this.b ), left | right ])
+		}
+		
+		// cull empty vectors
+		_len = intervals.length
+		if (_len > 1) {
+			if (intervals[0][0].magnitude() == 0) {
+				intervals[1][1] |= intervals[0][1]
+				intervals.shift()
+			}
+			else if (intervals[_len-1][0].magnitude() == 0) {
+				intervals[_len-2][1] |= intervals[_len-1][1]
+				intervals.pop()
+			}
 		}
 		
 		return intervals