LxThroughPointsBezier-Swift
An ideal iOS library using swift programming language. Draw a smooth curve through several points you designated. The curve‘s bend level is adjustable. Installation
You only need drag UIBezierPath+LxThroughPointsBezier.swift to your project. Support
Minimum support iOS version: iOS 5.0 Usage
var _points = [CGPoint]()
let point1 = CGPoint(x: 30, y: 210)
let point2 = CGPoint(x: 90, y: 120)
let point3 = CGPoint(x: 120, y: 200)
let point4 = CGPoint(x: 160, y: 240)
let point5 = CGPoint(x: 210, y: 160)
let point6 = CGPoint(x: 240, y: 300)
let point7 = CGPoint(x: 290, y: 140)
_points.append(point1)
_points.append(point2)
_points.append(point3)
_points.append(point4)
_points.append(point5)
_points.append(point6)
_points.append(point7)
let _curve = UIBezierPath()
_curve.contractionFactor = CGFloat(0.7)
_curve.moveToPoint(point1)
_curve.addBezierThrough(points: _points)
let _shapeLayer = CAShapeLayer()
_shapeLayer.strokeColor = UIColor.blueColor().CGColor
_shapeLayer.fillColor = nil
_shapeLayer.lineWidth = 3
_shapeLayer.path = _curve.CGPath
_shapeLayer.lineCap = kCALineCapRound
view.layer.addSublayer(_shapeLayer)Be careful
The good bend level is about 0.6 ~ 0.8. The default and recommended value is 0.7.
You must give at least 1 point for drawing the curve.
Effect
License
LxThroughPointsBezier-Swift is available under the Apache License 2.0. See the LICENSE file for more info.