如何在ios中使用bezier路径制作星形?
我正在使用贝塞尔路径制作简单的形状。使用贝塞尔路径制作星形的过程是什么?我想这就是您要寻找的:如何在ios中使用bezier路径制作星形?,ios,objective-c,swift,drawing,uibezierpath,Ios,Objective C,Swift,Drawing,Uibezierpath,我正在使用贝塞尔路径制作简单的形状。使用贝塞尔路径制作星形的过程是什么?我想这就是您要寻找的: func starPathInRect(rect: CGRect) -> UIBezierPath { let path = UIBezierPath() let starExtrusion:CGFloat = 30.0 let center = CGPointMake(rect.width / 2.0, rect.height / 2.0) let poi
func starPathInRect(rect: CGRect) -> UIBezierPath {
let path = UIBezierPath()
let starExtrusion:CGFloat = 30.0
let center = CGPointMake(rect.width / 2.0, rect.height / 2.0)
let pointsOnStar = 5 + arc4random() % 10
var angle:CGFloat = -CGFloat(M_PI / 2.0)
let angleIncrement = CGFloat(M_PI * 2.0 / Double(pointsOnStar))
let radius = rect.width / 2.0
var firstPoint = true
for i in 1...pointsOnStar {
let point = pointFrom(angle, radius: radius, offset: center)
let nextPoint = pointFrom(angle + angleIncrement, radius: radius, offset: center)
let midPoint = pointFrom(angle + angleIncrement / 2.0, radius: starExtrusion, offset: center)
if firstPoint {
firstPoint = false
path.moveToPoint(point)
}
path.addLineToPoint(midPoint)
path.addLineToPoint(nextPoint)
angle += angleIncrement
}
path.closePath()
return path
}
此函数可让您决定在星图中需要多少点
查看此项了解更多详细说明
希望这有帮助。:)如果有任何疑问,请告诉我 我想这就是你想要的:
func starPathInRect(rect: CGRect) -> UIBezierPath {
let path = UIBezierPath()
let starExtrusion:CGFloat = 30.0
let center = CGPointMake(rect.width / 2.0, rect.height / 2.0)
let pointsOnStar = 5 + arc4random() % 10
var angle:CGFloat = -CGFloat(M_PI / 2.0)
let angleIncrement = CGFloat(M_PI * 2.0 / Double(pointsOnStar))
let radius = rect.width / 2.0
var firstPoint = true
for i in 1...pointsOnStar {
let point = pointFrom(angle, radius: radius, offset: center)
let nextPoint = pointFrom(angle + angleIncrement, radius: radius, offset: center)
let midPoint = pointFrom(angle + angleIncrement / 2.0, radius: starExtrusion, offset: center)
if firstPoint {
firstPoint = false
path.moveToPoint(point)
}
path.addLineToPoint(midPoint)
path.addLineToPoint(nextPoint)
angle += angleIncrement
}
path.closePath()
return path
}
此函数可让您决定在星图中需要多少点
查看此项了解更多详细说明
希望这有帮助。:)如果有任何疑问,请告诉我 尝试以下路径:
//// Star Drawing
UIBezierPath* starPath = [UIBezierPath bezierPath];
[starPath moveToPoint: CGPointMake(45.25, 0)];
[starPath addLineToPoint: CGPointMake(61.13, 23)];
[starPath addLineToPoint: CGPointMake(88.29, 30.75)];
[starPath addLineToPoint: CGPointMake(70.95, 52.71)];
[starPath addLineToPoint: CGPointMake(71.85, 80.5)];
[starPath addLineToPoint: CGPointMake(45.25, 71.07)];
[starPath addLineToPoint: CGPointMake(18.65, 80.5)];
[starPath addLineToPoint: CGPointMake(19.55, 52.71)];
[starPath addLineToPoint: CGPointMake(2.21, 30.75)];
[starPath addLineToPoint: CGPointMake(29.37, 23)];
[starPath closePath];
[UIColor.redColor setStroke];
starPath.lineWidth = 1;
[starPath stroke];
您可以使用应用程序为iOS和OSX绘制形状。
这是一款易于使用且非常有用的应用程序
快乐编码。尝试以下路径:
//// Star Drawing
UIBezierPath* starPath = [UIBezierPath bezierPath];
[starPath moveToPoint: CGPointMake(45.25, 0)];
[starPath addLineToPoint: CGPointMake(61.13, 23)];
[starPath addLineToPoint: CGPointMake(88.29, 30.75)];
[starPath addLineToPoint: CGPointMake(70.95, 52.71)];
[starPath addLineToPoint: CGPointMake(71.85, 80.5)];
[starPath addLineToPoint: CGPointMake(45.25, 71.07)];
[starPath addLineToPoint: CGPointMake(18.65, 80.5)];
[starPath addLineToPoint: CGPointMake(19.55, 52.71)];
[starPath addLineToPoint: CGPointMake(2.21, 30.75)];
[starPath addLineToPoint: CGPointMake(29.37, 23)];
[starPath closePath];
[UIColor.redColor setStroke];
starPath.lineWidth = 1;
[starPath stroke];
您可以使用应用程序为iOS和OSX绘制形状。
这是一款易于使用且非常有用的应用程序
快乐编码。你能不能把它做大一点。你能不能把它做大一点。参见上的示例参见上的示例