Some Path and Image drawing in Swift

CustomView.swift

//
//  CustomView.swift
//  BluetoothExample
//
//  Created by Mark Jackson on 3/18/15.
//  Copyright (c) 2015 Mark Jackson. All rights reserved.
//

import UIKit

class CustomView: UIView {
    
    let pi : Float = 3.14159265359
    
    var gabiImage : UIImage?
    
    
    
    func DEGREES_TO_RADIANS(degrees : Float) -> Float{
        return pi * degrees / 180;
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        var imagePath = NSBundle.mainBundle().pathForResource("gabi", ofType: "JPG")
//        println(imagePath)
        var image = UIImage(contentsOfFile: imagePath!)
        // Store the image into a property of type UIImage *
        // for use later in the class's drawRect: method.
        self.gabiImage = image
    }

    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }

    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func drawRect(rect: CGRect) {
        super.drawRect(rect)
        // Drawing code
        let bitmapImage : UIImage? = drawImageWithBitmapGraphics(self.gabiImage)
        
        
        if let image = bitmapImage{
            UIGraphicsBeginImageContext(image.size)
            image.drawAtPoint(CGPointZero)
            drawOval()
            let newImage = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext()
//            print(newImage)
            let imageData : NSData = UIImagePNGRepresentation(newImage)
//            print(imageData)
            
            imageData.writeToFile("/Users/markjackson/Desktop/image.png", atomically: false)
            
            
        }else{
            
            println("No bitmapImage")
        }
        
    }
    
    func drawImageWithBitmapGraphics(image : UIImage?) -> UIImage?{
        var newImage : UIImage?
        if let gabi = image{
            
            println(self.bounds.width, self.bounds.height)
            println(gabi.size.width, gabi.size.height)
            
            let width : CGFloat = 300;
            
            //original height / original width x new width = new height
            let height = (gabi.size.height / gabi.size.width) * width
            
            var imageRect : CGRect = CGRectMake(0, 0, width, height)
            
            println(width, height)
            
            UIGraphicsBeginImageContextWithOptions(CGSizeMake(width, height), false, UIScreen.mainScreen().scale)
            gabi.drawInRect(imageRect)
            let newGabi : UIImage = UIGraphicsGetImageFromCurrentImageContext()
            
            UIGraphicsEndImageContext();
            
            newGabi.drawInRect(CGRectMake(0, 0, newGabi.size.width, newGabi.size.height))
            newImage = newGabi
            
        }else{
            println("No Gabi Image :(")
        }
        
        return newImage

    }
    
    func drawOval() -> Void{
        //Create oval shape to draw
        let path : UIBezierPath = UIBezierPath(ovalInRect: CGRectMake(0, 0, 200, 100))
        
        UIColor.blackColor().setStroke()
        UIColor.redColor().setFill()
        
        
        // Set the render colors.
        let ref : CGContextRef = UIGraphicsGetCurrentContext()
        
        // If you have content to draw after the shape,
        // save the current state before changing the transform.
        //CGContextSaveGState(ref);
        
        // Adjust the view's origin temporarily. The oval is
        // now drawn relative to the new origin point.
        CGContextTranslateCTM(ref, 50, 50)
        
        // Adjust the drawing options as needed.
        path.lineWidth = 5;
        
        // Fill the path before stroking it so that the fill
        // color does not obscure the stroked line.
        path.fill()
        path.stroke()
        
        // Restore the graphics state before drawing any other content.
        //CGContextRestoreGState(ref);
    }
    
    func drawPentagon() -> Void{
        UIColor.greenColor().setFill()
        
        //Create path
        var path : UIBezierPath = UIBezierPath()
        
        //Start path
        path.moveToPoint(CGPointMake(100, 0))
        
        //Draw line
        path.addLineToPoint(CGPointMake(200.0, 40.0))
        path.addLineToPoint(CGPointMake(160, 140))
        path.addLineToPoint(CGPointMake(40.0, 140))
        path.addLineToPoint(CGPointMake(0.0, 40.0))
        
        //Close path
        path.closePath()
        
        path.fill()
    }


}