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FlexMonkey / gist:e4c004b5a7a2897f6435

Created January 12, 2016 15:51

aspectFitInRect() - returns biggest rect of current aspect ratio that will fit into target

	extension CGRect
	{
	func aspectFitInRect(target target: CGRect) -> CGRect
	{
	let scale: CGFloat =
	{
	let scale = target.width / self.width

	return self.height * scale <= target.height ?
	scale :

FlexMonkey / gist:1cb50efd7427c37298af

Created January 13, 2016 13:51

interpolatePointsWithHermite() - adds a Hermite interpolated curve to a UIBezierPath()

	extension UIBezierPath
	{
	func interpolatePointsWithHermite(interpolationPoints : [CGPoint])
	{
	let n = interpolationPoints.count - 1

	for var ii = 0; ii < n; ++ii
	{
	var currentPoint = interpolationPoints[ii]

FlexMonkey / gist:3b500550fe51fa659d88

Created January 13, 2016 13:52

distanceTo() - extension to CGPoint returns distance between two points

	extension CGPoint
	{
	func distanceTo(point: CGPoint) -> CGFloat
	{
	return hypot(self.x - point.x, self.y - point.y)
	}
	}

FlexMonkey / gist:a18b0509ce8d2068457e

Created January 14, 2016 05:47

CoreImage Theshold filter based on custom CIColorKernel

	class ThresholdFilter: CIFilter
	{
	var inputImage : CIImage?
	var threshold: CGFloat = 0.75

	let thresholdKernel = CIColorKernel(string:
	"kernel vec4 thresholdFilter(__sample image, float threshold)" +
	"{" +
	" float luma = (image.r * 0.2126) + (image.g * 0.7152) + (image.b * 0.0722);" +

FlexMonkey / gist:7b66b0df7ab866dbc754

Created January 14, 2016 08:43

Handy UIColor extensions: multiply(), getRGBA() and getHex()

	import UIKit

	typealias RGBA = (red: CGFloat, green: CGFloat, blue: CGFloat, alpha: CGFloat)

	extension UIColor
	{
	func multiply(value: CGFloat) -> UIColor
	{
	let newRed = getRGBA().red * value
	let newGreen = getRGBA().green * value

FlexMonkey / gist:c73083f6cb3abe27a616

Created January 20, 2016 12:03

CIVector extension to convert to array of CGFloat

	extension CIVector
	{
	func toArray() -> [CGFloat]
	{
	var returnArray = [CGFloat]()

	for i in 0 ..< self.count
	{
	returnArray.append(self.valueAtIndex(i))
	}

FlexMonkey / gist:f108cadba2a128dcb514

Last active January 22, 2016 05:32

CGRect extension gets and sets a rectangle's corners

	extension CGRect
	{

	/// Return corners in order of top left, top right, bottom left, bottom right
	var corners: [CGPoint]
	{
	return [
	CGPoint(x: minX, y: minY),
	CGPoint(x: maxX, y: minY),
	CGPoint(x: minX, y: maxY),

FlexMonkey / gist:c4c77c9562cf252a5660

Last active January 29, 2016 16:55

Compares two images to see if they have identical content

	func UIImageEqualToImage(image1: UIImage, _ image2: UIImage, ciContext: CIContext? = nil) -> Bool
	{
	guard let
	ciImage1 = CIImage(image: image1),
	ciImage2 = CIImage(image: image2) where image1.size == image2.size else
	{
	return false
	}

	let ctx = ciContext ?? CIContext()

FlexMonkey / gist:d2b1cbd7e1b2caf8d31b

Last active January 28, 2016 17:35

Synchronously create a UIImage from an UIImagePickerControllerReferenceURL

	// Could benefit from some defensive coding :)

	import Photos

	let url = info[UIImagePickerControllerReferenceURL] as! NSURL

	let fetchResult = PHAsset.fetchAssetsWithALAssetURLs([url], options: nil)

	let asset = fetchResult.firstObject as! PHAsset

FlexMonkey / gist:8f3b5678bf52098f371a

Created January 31, 2016 06:32

CGFloat extension - saturate() and clamped smootherStep()