Example script of PaperSwift

ExampleScript.swift

import PaperSwift

let ExampleScript1 = { (paper: PaperView) in
    var center: CGPoint
    var width: CGFloat
    var height: CGFloat
    var pathHeight: CGFloat
    let points = 8
    let path = paper.Path()
    path.fillColor = UIColor.darkGrayColor()
    
    func initializePath() {
        width  = paper.bounds.width
        height = paper.bounds.height
        pathHeight = height / 2
        center = [width / 2, height / 2]
        path.moveTo([0, height])
        for i in 1..<points {
            path.lineTo([width / CGFloat(points) * CGFloat(i), center.y])
        }
        path.lineTo([width, height])
        path.fullySelected = true
    }
    initializePath()
    
    paper.onFrame { event in
        pathHeight += (center.y / 2.0 - pathHeight) / 10.0
        for i in 1..<points {
            let sinSeed = CGFloat(event.count) + CGFloat(i + i % 10) * 100.0
            let sinHeight = sin(sinSeed / 200.0) * pathHeight
            let yPos = sin(sinSeed / 100.0) * sinHeight + center.y
            path.segments[i].point.y = yPos
        }
        path.smooth(.Continuous)
    }
    
    paper.onResize { event in
        initializePath()
    }
}