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var RegionList = (function(){
var RegionList = {}
var regions = RegionList.regions
RegionList.build = function(){
var segments = RegionList.getSortedSegments()
// loop over them from left to right
// console.log(segments.map(function(s){ return s.toString() }).join("\n"))
var rooms = []
var open_segments = []
var segment, open_segment, vertical, other_side
for (var i = 0; i < segments.length; i++) {
segment = segments[i]
if (! isVertical(segment)) {
continue
}
for (var j = 0; j < open_segments.length; j++) {
open_segment = open_segments[j]
if (overlaps(segment, open_segment)) {
// if we have overlap, it means we have made a full room
other_side = clone_segment(open_segment)
other_side[0].a = segment[0].a
other_side[1].a = segment[1].a
rooms.push([open_segment, other_side])
open_segments.splice(j, 1)
j--
}
}
open_segments.push(segment)
}
// console.log(rooms.map(function(s){ return s[0][0].toString() + " " + s[0][1].toString() + " " + s[1][0].toString() + " " + s[1][1].toString() }).join("\n"))
return rooms
}
RegionList.getSortedSegments = function(){
// get a list of all segments from these polylines
var segments = shapes.getAllSegments()
// re-orientate them so they're either facing up or right
segments.forEach(function(segment){
// vertical
if (segment[0].a == segment[1].a) {
if (segment[0].b > segment[1].b) {
segment.push(segment.shift())
}
}
// horizontal
else if (segment[0].b == segment[1].b) {
if (segment[0].a > segment[1].a) {
segment.push(segment.shift())
}
}
})
// sort them from top to bottom, left to right
segments = segments.sort(function(a,b){
if (a[0].a < b[0].a) {
return -1
}
else if (a[0].a == b[0].a) {
if (a[0].b < b[0].b) {
return -1
}
else if (a[0].b == b[0].b) {
return 0
}
else {
return 1
}
}
else {
return 1
}
})
return segments
}
function isVertical (segment) { return segment[0].a == segment[1].a }
function isHorizontal (segment) { return segment[0].b == segment[1].b }
function overlaps (a,b) { return (a[0].b > b[0].b || a[1].b < b[1].b) }
function clone_segment(a){ return [a[0].clone(), a[1].clone()] }
return RegionList
})()
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