TextAttribute not getting applied - ios

Question

I have 3 function where Im drawing text on Image. The text includes attribute paragraphStyle = .right, but the text always getting aligned to left.
These are my function :
Function Name drawText() :
private func drawText(file: String = #file , line: Int = #line, function: String = #function) {
var myInflectionRate = inflectionRate
let EPS = 0.00000001
if myInflectionRate >= 0 {
myInflectionRate = max(EPS,myInflectionRate)
}else if myInflectionRate < 0{
myInflectionRate = min(-EPS,myInflectionRate)
}
let attributedText = NSAttributedString(string: text, attributes: textAttributes)
var rect = attributedText.boundingRect(with: CGSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude), options: .usesLineFragmentOrigin, context: nil)
let nsText = text as NSString
let textSize = nsText.size(withAttributes: textAttributes)
let angle = myInflectionRate*2*Double.pi
let arcLength = textSize.width
let r = arcLength / angle
let min_r = arcLength/(2*Double.pi)
let angleB = (Double.pi - angle) / 2.0
let widthOfRect = max(abs(angle) < Double.pi ? r * (sin(angle)/sin(angleB)) : abs(2*r), 2.0*min_r)
let positiveR = abs(r)
let positiveAngle = abs(angle)
let heightOfRect = max( positiveAngle < Double.pi ? positiveR - sqrt(positiveR*positiveR - (widthOfRect/2)*(widthOfRect/2)) : positiveR + positiveR*sin((positiveAngle-Double.pi)/2.0), 2.0*0)
rect.size = CGSize(width: widthOfRect + textSize.height, height: heightOfRect + 2.0*textSize.height)
if text.isEmpty {
rect.size = CGSize(width: 80, height: 80)
}
UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
guard let context = UIGraphicsGetCurrentContext() else {
return
}
if myInflectionRate >= EPS {
context.translateBy (x: rect.size.width / 2, y: textSize.height + r )
}else if myInflectionRate <= -EPS{
context.translateBy (x: rect.size.width / 2, y: rect.size.height - textSize.height + r )
}else{
context.translateBy (x: rect.size.width / 2, y: rect.size.height/2)
}
context.scaleBy(x: 1, y: -1)
context.setFillColor(UIColor.clear.cgColor)
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
imageViewForText?.image = image
imageViewForText?.contentMode = .scaleAspectFit
imageViewForText?.frame = self.bounds.insetBy(dx: globalInset!, dy: globalInset!)
imageViewForText?.backgroundColor = textBackgroundColor?.withAlphaComponent(textBackgroundAlpha ?? 1)
refresh()
}
Function Name centreArcPerpendicular() :
func centreArcPerpendicular(text str: String, context: CGContext, radius r: CGFloat, angle theta: CGFloat, attributes: [NSAttributedString.Key: AnyObject], clockwise: Bool, size: CGSize){
let characters: [String] = str.map { String($0) } // An array of single character strings, each character in str
let l = characters.count
var arcs: [CGFloat] = [] // This will be the arcs subtended by each character
var totalArc: CGFloat = 0 // ... and the total arc subtended by the string
for i in 0 ..< l {
arcs += [chordToArc(characters[i].size(withAttributes: attributes).width, radius: r)]
totalArc += arcs[i]
}
let direction: CGFloat = clockwise ? -1 : 1
let slantCorrection: CGFloat = clockwise ? -.pi / 2 : .pi / 2
var thetaI = theta - direction * totalArc / 2
var modifiedAttributes = attributes
for i in 0 ..< l {
thetaI += direction * arcs[i] / 2
let ColorArraySize = CurrentTextConfiguration.shared.textConfiguration.textureTextColor.count
let offset = characters[i].size(withAttributes: attributes)
modifiedAttributes[NSAttributedString.Key.foregroundColor] = CurrentTextConfiguration.shared.textConfiguration.textureTextColor[i%ColorArraySize].getColor(bounds: CGRect(origin: .zero, size: offset))
thetaI += direction * arcs[i] / 2
}
centre(text: str, context: context, radius: r, angle: theta, attributes: modifiedAttributes, slantAngle: thetaI + slantCorrection,size : size)
}
func chordToArc(_ chord: CGFloat, radius: CGFloat) -> CGFloat {
if (chord/(2*radius)) > 1 {
return 2 * asin(1)
}else if (chord/(2*radius)) < -1 {
return 2 * asin(-1)
}
return 2 * asin(chord / (2 * radius))
}
Function name center() :
func centre(text str: String, context: CGContext, radius r: CGFloat, angle theta: CGFloat, attributes: [NSAttributedString.Key: AnyObject], slantAngle: CGFloat, size : CGSize) {
NSAttributedString.Key.font: font]
context.saveGState()
context.scaleBy(x: 1, y: -1)
context.translateBy(x: r * cos(theta), y: -(r * sin(theta)))
context.rotate(by: -slantAngle)
let offset = str.size(withAttributes: attributes)
context.translateBy (x: -offset.width / 2, y: -offset.height / 2) // Move the origin to the centre of the text (negating the y-axis manually)
str.draw(at: CGPoint(x: 0, y: 0), withAttributes: attributes)
context.restoreGState()
}
I want to align my text from right , not left