To run the example project, clone the repo, and run pod install from the Example directory first.
SwiftCubicSpline is available through CocoaPods. To install it, simply add the following line to your Podfile:
pod "SwiftCubicSpline"
let spline = CubicSpline(points: [
CGPoint(x: 0.0, y: 0.5),
CGPoint(x: 0.1, y: 0.5),
CGPoint(x: 0.2, y: 0.7),
CGPoint(x: 0.4, y: 0.3),
CGPoint(x: 0.6, y: 0.6),
CGPoint(x: 0.8, y: 0.4),
CGPoint(x: 0.9, y: 0.5),
CGPoint(x: 1.0, y: 0.5)
])
let graphSize = self.bounds.size
for x in 0 ..< Int(graphSize.height) {
let y = spline.interpolate(CGFloat(x)/graphSize.height)*graphSize.width
if x == 0 {
CGContextMoveToPoint(context, CGFloat(y), CGFloat(x));
} else {
CGContextAddLineToPoint(context, CGFloat(y), CGFloat(x));
}
}
giordano scalzo, [email protected]
Based and relying on SAMCubicSpline bye Sam Soffes
SwiftCubicSpline is available under the MIT license. See the LICENSE file for more info.