svgWheelManager.py
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	from idTagDetector import IdTagDetector
	from svgTreeManager import *
	SVG_NS = "http://www.w3.org/2000/svg"




	# Inserts a circle in a SVG. Returns the SVG as a string. For testing mostly.
	# Example of SVG circle syntax:
	# <circle cx="600" cy="200" r="100" fill="red" stroke="blue" stroke-width="10" />
	def insertCircle(svgData, centreX, centreY, radius="10", strokeWidth="1", fillColour="red", strokeColour="blue", circleID=""):
	import re

	regex = re.compile("(.*)(</svg>)", re.DOTALL)
	m = regex.match(svgData)

	svgData = m.group(1)
	svgData = svgData+"\n<circle cx=\""+str(centreX)+"\" cy=\""+str(centreY)+"\" r=\""+str(radius)+"\" fill=\""+fillColour+"\" stroke=\""+strokeColour+"\" stroke-width=\""+str(strokeWidth)+"\" id=\""+circleID+"\" />"
	svgData = svgData+"\n"+m.group(2)
	return svgData

	# Inserts a Rect in a SVG. Returns the SVG as a string. For testing mostly.
	# Example of SVG rect syntax:
	# <rect x="50" y="20" width="150" height="150" style="fill:blue;stroke:pink;stroke-width:5;fill-opacity:0.1;stroke-opacity:0.9" />
	def insertRect(svgData, xMax, yMax, xMin, yMin, strokeWidth="2", fillColour="none", strokeColour="green", rectID=""):
	import re

	regex = re.compile("(.*)(</svg>)", re.DOTALL)
	m = regex.match(svgData)

	svgData = m.group(1)
	leftPosition = xMin
	topPosition = yMin
	height = yMax - yMin
	width = xMax - xMin

	#strokeWidth = 2

	svgData = svgData+"\n<rect x=\""+str(leftPosition)+"\" y=\""+str(topPosition)+"\" height=\""+str(height)+"\" width=\""+str(width)+"\" fill=\""+fillColour+"\" stroke=\""+strokeColour+"\" stroke-width=\""+str(strokeWidth)+"\" id=\""+rectID+"\" />"
	svgData = svgData+"\n"+m.group(2)
	return svgData


	# Class to generate percentage Wheels
	class SvgWheelManager:
	def __init__(self, arg):
	self.inputSVG = arg
	self.tagsAndAbsolueValues = {}
	self.tagsAndPercentage = {}
	self.listOfIDs = self.fillListOfIDs()
	self.treeManager = SvgTreeManager(self.inputSVG)

	# Just used in constructor to fill self.listOfIDs
	def fillListOfIDs(self):
	from idTagDetector import IdTagDetector
	detector = IdTagDetector(self.inputSVG)
	detector.detect()
	return detector.detectedTags

	# gives a size to annotation circles based on viewport size.
	def defaultCircleRadius(self):
	radius = self.treeManager.characteristicDimensions()/200.0
	return radius

	# gives a width to annotation lines based on viewport size.
	def defaultLineWidth(self):
	radius = self.treeManager.characteristicDimensions()/600.0
	return radius

	# Inserts an SVG circle on the barycentre of the path given as argument
	def insertCircleOnPath(self, path):
	pathID = self.treeManager.getNodeID(path)
	if not "path" in pathID:
	#print(pathID)
	cx = (self.treeManager.centreOfMass(path))[0]
	cy = (self.treeManager.centreOfMass(path))[1]
	self.inputSVG = insertCircle( self.inputSVG, cx, cy, radius=self.defaultCircleRadius(), circleID="circle-"+pathID)

	def insertCirclesOnPaths(self):
	for node in self.treeManager.findPath():
	self.insertCircleOnPath(node)
	#tree = ET.ElementTree(ET.fromstring(self.inputSVG))
	#for node in tree.findall('.//{%s}path' % SVG_NS):
	#self.insertCircleOnPath(node)

	def insertRectAroundPath(self, path):
	pathID = self.treeManager.getNodeID(path)
	if not "path" in pathID:
	#if "fr" in pathID:
	xMax = max( (self.treeManager.extractPoints(path))[0] )
	xMin = min( (self.treeManager.extractPoints(path))[0] )
	yMax = max( (self.treeManager.extractPoints(path))[1] )
	yMin = min( (self.treeManager.extractPoints(path))[1] )

	#self.inputSVG = insertRect( self.inputSVG, xMax, yMax, xMin, yMin, rectID="rect-"+pathID)
	#self.inputSVG = insertRect( self.inputSVG, xMax, yMax, xMin, yMin, rectID="rect-"+pathID, strokeWidth="40" )
	self.inputSVG = insertRect( self.inputSVG, xMax, yMax, xMin, yMin, rectID="rect-"+pathID, strokeWidth=self.defaultLineWidth() )


	def insertRectAroundPaths(self):
	for node in self.treeManager.findPath():
	self.insertRectAroundPath(node)
	#tree = ET.ElementTree(ET.fromstring(self.inputSVG))
	#for node in tree.findall('.//{%s}path' % SVG_NS):
	#self.insertRectAroundPath(node)

	def printSVG(self):
	print(self.inputSVG)


	# Reads stuff from an actual data read that we will have to build.
	#def fillTagsAndAbsolueValues(self):
	#for i in self.listOfIDs:

	#Fills self.tagsAndAbsolueValues with random stuff for testing
	def randomTagsAndAbsolueValues(self):
	import random
	for i in self.listOfIDs:
	self.tagsAndAbsolueValues[i] = random.randint(0, 16777215)

	#Fills self.tagsAndPercentage with percentage of total, as in localValue/Sum(localValues)
	def fillTagsAndPercentageOfTotal(self):
	totalValue = sum(self.tagsAndAbsolueValues.values())
	for i in self.tagsAndAbsolueValues.keys():
	self.tagsAndPercentage[i] = self.tagsAndAbsolueValues[i]*100.0/fillTagsAndPercentageOfTotal

	# Fill with different sorts of percentage later.

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