From 30d75e82c7649ef2ab9f71fa360f5735eb098bc5 Mon Sep 17 00:00:00 2001
From: Julie Lala <jules@okfoc.us>
Date: Fri, 11 Apr 2014 00:29:49 -0400
Subject: shift to quantize

---
 rect.js | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 rect.js

(limited to 'rect.js')

diff --git a/rect.js b/rect.js
new file mode 100644
index 0000000..dcf2d33
--- /dev/null
+++ b/rect.js
@@ -0,0 +1,60 @@
+function rect (x0,y0,x1,y1){
+	if (x0 instanceof vec2) {
+		this.x = x0
+		this.y = y0
+	}
+	else if (x1 === undefined) {
+		this.x = new vec2(x0,x0)
+		this.y = new vec2(y0,y0)
+	}
+	else {
+		this.x = new vec2(x0,x1)
+		this.y = new vec2(y0,y1)
+	}
+	this.translation = new vec2(0,0)
+}
+rect.prototype.clone = function(){
+	return new rect( this.x.clone(), this.y.clone() )
+}
+rect.prototype.center = function(){
+	return new vec2(this.x.midpoint(), this.y.midpoint())
+}
+rect.prototype.area = function(){
+	return this.x.length() * this.y.length()
+}
+rect.prototype.normalize = function(){
+	this.x.normalize().add(this.translation.a)
+	this.y.normalize().add(this.translation.b)
+	this.translation.a = this.translation.b = 0
+	return this
+}
+rect.prototype.contains = function(x,y){
+	return this.x.contains(x) && this.y.contains(y)
+}
+rect.prototype.intersects = function(r){
+	return this.x.intersects(r.x) && this.y.intersects(r.y)
+}
+rect.prototype.width = function(){ return this.x.length() }
+rect.prototype.height = function(){ return this.y.length() }
+rect.prototype.fill = function(){
+	ctx.fillRect(this.x.a + this.translation.a, this.y.a + this.translation.b, this.x.length(), this.y.length())
+}
+rect.prototype.stroke = function(){
+	ctx.beginPath()
+	ctx.moveTo(this.x.a, this.y.a)
+	ctx.lineTo(this.x.b, this.y.b)
+	ctx.stroke()
+}
+rect.prototype.perimeter = function(){
+	line( this.x.a, this.y.a, this.x.b, this.y.a, this.translation )
+	line( this.x.a, this.y.b, this.x.b, this.y.b, this.translation )
+	line( this.x.a, this.y.a, this.x.a, this.y.b, this.translation )
+	line( this.x.b, this.y.a, this.x.b, this.y.b, this.translation )
+}
+rect.prototype.toString = function(){
+	return "[" + this.x.toString() + " " + this.y.toString() + "]"
+}
+rect.prototype.quantize = function(n){
+	this.x.quantize(n)
+	this.y.quantize(n)
+}
-- 
cgit v1.2.3-70-g09d2


From 6f895c8db89ce8ae6295db1dc93284cdb521217c Mon Sep 17 00:00:00 2001
From: Julie Lala <jules@okfoc.us>
Date: Fri, 11 Apr 2014 10:20:57 -0400
Subject: notes

---
 rect.js         | 30 ++++++++++++++++++++++++++++++
 rectangles.html |  2 +-
 2 files changed, 31 insertions(+), 1 deletion(-)

(limited to 'rect.js')

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
-- 
cgit v1.2.3-70-g09d2