PerspectiveTransform/Pod/Classes/Perspective+Transform.swift

//
//  Quadrilateral+Transform.swift
//  Pods
//
//  Created by Paul Zabelin on 2/20/16.
//
//

public extension Perspective {
    /**
     Create Perspective based on 4 points

     - parameter topLeft: top left corner
     - parameter topRight: top right corner
     - parameter bottomLeft: bottom left corner
     - parameter bottomRight: bottom right corner
     */
    public convenience init(_ topLeft: CGPoint, _ topRight: CGPoint, _ bottomLeft: CGPoint, _ bottomRight: CGPoint) {
        self.init(Quadrilateral(topLeft, topRight, bottomLeft, bottomRight))
    }
    /**
     Create Perspective based on 4 points

     - parameter points: corner points, must be size 4
     */
    public convenience init(_ points: [CGPoint]) {
        self.init(Quadrilateral(points))
    }
    /**
        Create Perspective based on 4 corners of the rectangle

        - parameter rect: defines the corners
     */
    public convenience init(_ rect: CGRect) {
        self.init(Quadrilateral(rect))
    }

    /**
         Calculate CATransform3D to another perspective

         - parameter destination: perspective to transform to
         - returns: tranformation matrix from this perspective to destination
     */
    public func projectiveTransform(destination: Perspective) -> CATransform3D {
        return CATransform3D(projection(to: destination).to3d())
    }
}