Swift⽤UIBezierPath来画圆⾓矩形、⾃定义多路径图形
最好的特点就是可以⾃定义路径，设置圆⾓和描边都很⽅便，以下为代码和效果，均在playground中实现
1、⾸先实现⼀个圆⾓矩形，并对此路径描边，为其绘制⼀个轮廓。
//: Playground - noun: a place where people can play
previouspageimport UIKit
class MyView : UIView{
override func drawRect(rect: CGRect) {
var pathRect = UIEdgeIntsIntRect(lf.bounds, UIEdgeIntsMake(1, 1, 1, 1))
var path = UIBezierPath(roundedRect: pathRect, cornerRadius: 10)
path.lineWidth = 4
UIColor.blackColor().tStroke()
path.fill()
path.stroke()
}
}
let viewRect = CGRect(x: 0, y: 0, width: 100, height: 100)
let myEmptyView = MyView(frame:viewRect)
tips：所有绘制操作都是按照调⽤顺序进⾏的。在本段代码中，我在填充矩形后再对其进⾏描边。如果交换对path.fill()和path.stroke()的调⽤顺序，将会得到⼀个稍有不同的结果，绿⾊填充将会略微覆盖⿊⾊描边，效果图如下。
values2、下⾯⾃定义⼀条路径，确定⼏个点，然后像画笔⼀样连线！
post production//: Playground - noun: a place where people can play
import UIKit
class MyView : UIView{
override func drawRect(rect: CGRect) {
var bezierPath = UIBezierPath()
//创建⼀个矩形，它的所有边都内缩5%
var drawingRect = CGRectInt(lf.bounds, lf.bounds.size.width*0.05, lf.bounds.size.height*0.05)
/
obv
/确定组成绘画的点
var topLeft = CGPointMake(CGRectGetMinX(drawingRect), CGRectGetMinY(drawingRect))
var topRight = CGPointMake(CGRectGetMaxX(drawingRect), CGRectGetMinY(drawingRect))
var bottomLeft = CGPointMake(CGRectGetMinX(drawingRect), CGRectGetMaxY(drawingRect))
var bottomRight = CGPointMake(CGRectGetMaxX(drawingRect), CGRectGetMaxY(drawingRect))
突出
var center = CGPointMake(CGRectGetMidX(drawingRect), CGRectGetMinY(drawingRect))
//开始绘制
bezierPath.addLineToPoint(topRight)
bezierPath.addLineToPoint(bottomLeft)
bezierPath.addCurveToPoint(bottomRight, controlPoint1: center, controlPoint2: center)
/
/使路径闭合，结束绘制
bezierPath.cloPath()
//设定颜⾊，并绘制它们
UIColor.blackColor().tStroke()
bezierPath.fill()
bezierPath.stroke()
}
}
let viewRect = CGRect(x: 0, y: 0, width: 100, height: 100)
let myEmptyView = MyView(frame:viewRect)
3、多条⼦路径也可以。
//: Playground - noun: a place where people can play
import UIKit
class MyView : UIView{
override func drawRect(rect: CGRect) {
//创建⼀条空Bezier路径
let bezierPath = UIBezierPath()
//为两个组成部分定义矩形
let squareRect = CGRectInt(rect, rect.size.width*0.45, rect.size.height*0.05)
let circleRect = CGRectInt(rect, rect.size.width*0.3, rect.size.height*0.3)supreme中文叫什么
let cornerRadius : CGFloat = 20
loveaffair/
/创建路径
let circlePath = UIBezierPath(ovalInRect: circleRect)
let squarePath = UIBezierPath(roundedRect: squareRect, cornerRadius: cornerRadius) //将它们添加到主路径
squarePath.appendPath(circlePath)
bezierPath.appendPath(squarePath)
//设定颜⾊并绘制它们
//绘制路径
bezierPath.fill()
}
}
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zubulet viewRect = CGRect(x: 0, y: 0, width: 100, height: 100)性别英文
let myEmptyView = MyView(frame:viewRect)
以上就是UIBezierPath的基本⽤法，⽤好了将是绘制图形的⼜⼀利器。
