CoreGraphics methods override

CoreGraphicsExtension.swift

//Copyright 
//https://habrahabr.ru/post/271647/

import Foundation

// Summ and Substraction of Vectors
func +(left: CGPoint, right: CGPoint)->CGPoint{
	return CGPoint(x: left.x+right.x, y: left.y+right.y)
}
prefix func -(right: CGPoint)->CGPoint{
	return CGPoint(x: -right.x, y: -right.y)
}
func -(left: CGPoint, right: CGPoint)->CGPoint{
	return left + (-right)
}

///////////////////////////////////////////////////
//Multiplication and division of Vectors to Scalar

func *(left: CGPoint, right: CGFloat)->CGPoint{
	return CGPoint(x: left.x*right, y: left.y*right)
}
func *(left: CGFloat, right: CGPoint)->CGPoint{
	return right*left
}
func /(left: CGPoint, right: CGFloat)->CGPoint{
	return left*(1/right)
}
///////////////////////////////////////////////////

func +=(inout left:CGPoint, right:CGPoint){
	left = left+right
}
func -=(inout left:CGPoint, right:CGPoint){
	left = left-right
}
func *=(inout left:CGPoint, right:CGFloat){
	left = left*right
}
func /=(inout left:CGPoint, right:CGFloat){
	left = left/right
}
///////////////////////////////////////////////////
///////////////////////////////////////////////////

func *(left: CGPoint, right: CGPoint)->CGFloat{
	return left.x*right.x + left.y*right.y
}
func /(left: CGPoint, right: CGPoint)->CGFloat{
	return left.x*right.y - left.y*right.x
}
///////////////////////////////////////////////////
///////////////////////////////////////////////////

func *(left: CGPoint, right: CGAffineTransform)->CGPoint{
	return CGPointApplyAffineTransform(left, right)
}
func *=(inout left:CGPoint, right:CGAffineTransform){
	left = left*right
}
///////////////////////////////////////////////////

func *(left: CGAffineTransform, right: CGAffineTransform)->CGAffineTransform{
	return CGAffineTransformConcat(left, right)
}
func *=(inout left:CGAffineTransform, right:CGAffineTransform){
	left = left*right
}