GraphicsLib + Playground + Framework

GraphicsLibPlayground.swift

import Cocoa
import XCPlayground
import PlaygroundSupport

@testable import MyFrameWork

class TouchView: NSView {
    var (path, currentPath) = (NSBezierPath(), NSBezierPath())
    override var isFlipped:Bool {return true}/*Organizes your view from top to bottom*/
    override init(frame frameRect: NSRect) {
        super.init(frame: frameRect)//<--maybe: MTLSystemCreateDefaultDevice()
        
        self.wantsLayer = true/*if true then view is layer backed*/
        layer = CALayer()/*needs to be layer-hosted so that we dont get clipping of children*/
        layer?.backgroundColor = NSColor.black.cgColor
        layer!.masksToBounds = false
        
        /*Gradients*/
        let gradient = LinearGradient(Gradients.deepPurple(),[],π/2)
        let lineGradient = LinearGradient(Gradients.blue(0.5),[],π/2)
        /*Styles*/
        let fill:GradientFillStyle = GradientFillStyle(gradient)
        let lineStyle = LineStyle(20,NSColorParser.nsColor(Colors.green()).alpha(0.5),CGLineCap.round)
        let line = GradientLineStyle(lineGradient,lineStyle)
        /*Rect*/
        let rect = RectGraphic(40,40,200,200,fill,line)
        _ = addSubView(rect.graphic)
        rect.draw()
        /*Ellipse*/
        let ellipse = EllipseGraphic(300,40,200,200,fill.mix(Gradients.green()),line.mix(Gradients.lightGray(0.5)))
        addSubview(ellipse.graphic)
        ellipse.draw()
        /*RoundRect*/
        let roundRect = RoundRectGraphic(40,300,200,200,Fillet(40),fill.mix(Gradients.red()),line.mix(Gradients.blue(0.5)))
        addSubview(roundRect.graphic)
        roundRect.draw()
        /*Line*/
        let lineGraphic = LineGraphic(CGPoint(300,300),CGPoint(500,500),line.mix(Gradients.orange()))
        addSubview(lineGraphic.graphic)
        lineGraphic.draw()

    }
    required init(coder: NSCoder) {fatalError("init(coder:) has not been implemented") }
}

let touchView: TouchView = TouchView(frame:NSRect(x: 0, y: 0, width: 540, height: 540))

PlaygroundPage.current.needsIndefiniteExecution = true
PlaygroundPage.current.liveView = touchView