notes

2 files changed, 31 insertions, 1 deletions

diff --git a/rect.js b/rect.js
index dcf2d33..f643b6f 100644
--- a/rect.js
+++ b/rect.js
@@ -58,3 +58,33 @@ rect.prototype.quantize = function(n){
 	this.x.quantize(n)
 	this.y.quantize(n)
 }
+rect.prototype.reset = function(){
+	var copy = this.clone()
+	copy.sides = 0xf
+	this.regions = [ copy ]
+}
+rect.prototype.clipTo = function(r){
+	// for each of this rect's regions split the region if necessary
+	for (var i = 0, len = regions.length; i < len; i++) {
+		if (regions[i] && regions[i].intersects(r)) {
+			var splits = regions[i].split(r)
+			regions.concat(splits)
+			regions[i] = null
+		}
+	}
+}
+rect.prototype.split = function(r){
+	var splits = []
+
+	
+
+	// 1 split (horizontal)
+	// 1 split (vertical)
+	// 2 splits (top left)
+	// 2 splits (top right)
+	// 2 splits (bottom left)
+	// 2 splits (bottom right)
+	// 3 splits (center)
+
+	return splits
+}
diff --git a/rectangles.html b/rectangles.html
index aa31344..7acc52b 100644
--- a/rectangles.html
+++ b/rectangles.html
@@ -141,7 +141,6 @@ function solve_rects(){
 	var left, right
 	for (var i = 0; i < rects.length; i++) {
 		left = rects[i]
-		left.regions = []
 		for (var j = 0; j < rects.length; j++) {
 			right = rects[j]
 			if (left.intersects(right)) {
@@ -156,6 +155,7 @@ function solve_rects(){
 // 	for (var i = 0; i < rects.length; i++) {
 // 		regions.concat(rect[i].regions)
 // 	}
+	// handle when two walls are coplanar
 	// generate floor and ceiling for some regions
 	// generate walls from surviving regions
 	// generate ceiling-walls where ceiling has discontinuity