这一节会介绍图形的基本操作,会包括圆,椭圆,长方形等
圆
var body: some View { Circle() }
椭圆
var body: some View { Ellipse() }
矩形
struct ShapesSample: View { var body: some View { Rectangle() .frame(width: 100, height: 200) }}
圆角矩形
和矩形的区别就是多了一个初始化圆角参数
struct ShapesSample: View { var body: some View { RoundedRectangle(cornerRadius: 20) .frame(width: 300, height: 200) }}
胶囊
和其他的图形相比多了一个初始参数 style
以下是官方解释的参数
/// Quarter-circle rounded rect corners.
case circular
/// Continuous curvature rounded rect corners.
case continuous
.circular
struct ShapesSample: View { var body: some View { Capsule(style: .circular) }}
**
**
.continuous
struct ShapesSample: View { var body: some View { Capsule(style: .continuous) }}
两个参数的图形看上去很类似,.circular 在转角的时候感觉弧度更大一些
以下基本参数,以上的图形都适用
fill()
.foregroundColor()
.stroke()
.trim(from: 0.0, to: 0.7)
.frame(width: 300, height: 200)
struct ShapesSample: View { var body: some View { Circle() .stroke(Color.orange, style: StrokeStyle(lineWidth: 20, lineCap: .round, dash: [30])) .frame(width: 300, height: 200) }}
** **
trim 切割圆
struct ShapesSample: View { var body: some View { Circle() .trim(from: 0.5, to: 1.0) .frame(width: 300, height: 200) }}
以下是所有基本参数代码
struct ShapesSample: View { var body: some View { Rectangle()// .fill(Color.red)// .foregroundColor(Color.orange)// .stroke()// .stroke(Color.red, lineWidth: 3)// .stroke(Color.orange, style: StrokeStyle(lineWidth: 20, lineCap: .round, dash: [30])) .trim(from: 0.0, to: 0.9) .stroke(Color.blue, lineWidth: 10) .frame(width: 300, height: 200) }}
这一节就到这里了。