Swift3 如何在pdfkit swift中添加圆注释?
我使用pdfkit并添加了具有固定大小和宽度的圆形注释,但我希望使用动态高度和宽度绘制。这是我的密码: 这里:开始是我开始指指点点的地方 结束是我结束移动手指的第二个点。 使用start.x和end.ySwift3 如何在pdfkit swift中添加圆注释?,swift3,annotations,pdfkit,wwdc,pdf-annotations,Swift3,Annotations,Pdfkit,Wwdc,Pdf Annotations,我使用pdfkit并添加了具有固定大小和宽度的圆形注释,但我希望使用动态高度和宽度绘制。这是我的密码: 这里:开始是我开始指指点点的地方 结束是我结束移动手指的第二个点。 使用start.x和end.y let circle = PDFAnnotation(bounds: CGRect(x: start.x, y: end.y, width: 100, height: 100), forType: .circle, withProperties: nil) circle.color =
let circle = PDFAnnotation(bounds: CGRect(x: start.x, y: end.y, width: 100, height: 100), forType: .circle, withProperties: nil)
circle.color = hexStringToUIColor(hex: "#0000FF")
let border = PDFBorder()
border.lineWidth = 3.0
circle.border = border
page?.addAnnotation(circle)
这是使用动态高度和宽度绘制圆的第二种方法:
以下是代码:
let centerX = (start!.x + end!.x)/2
let centerY = (start!.y + end!.y)/2
var distance = (end!.x - centerX) * 2
if distance < 0 {
distance = (start!.x - centerX) * 2
}
let halfDistance = distance/2
self.annotation = PDFAnnotation(bounds: CGRect(x: centerX - halfDistance, y: centerY - halfDistance, width: distance, height: distance), forType: .circle, withProperties: nil)
let page = self.pdfview.currentPage
annotation.color = hexStringToUIColor(hex: "#0000FF")
let border = PDFBorder()
border.lineWidth = 3.0
annotation.border = border
page?.addAnnotation(annotation)
让centerX=(开始!.x+结束!.x)/2
设centerY=(开始!.y+结束!.y)/2
变量距离=(结束!.x-中心x)*2
如果距离<0{
距离=(开始!.x-中心x)*2
}
设半距离=距离/2
self.annotation=PDFanRotation(边界:CGRect(x:centerX-半距离,y:centerY-半距离,宽度:距离,高度:距离),forType:。圆圈,属性:nil)
让page=self.pdfview.currentPage
annotation.color=hexStringToUIColor(十六进制:#0000FF)
let border=PDFBorder()
border.lineWidth=3.0
annotation.border=边框
第页?.addAnnotation(注释)
第二种方法使用动态高度和宽度绘制圆形,但不是我想要的。如果我画一个圆圈,它们是8种情况:
您可以使用此代码在PDF页面上绘制圆
let size = CGSize(width: abs(point.x - startPoint.x), height: abs(point.y - startPoint.y))
var rect = CGRect(origin: startPoint, size: size)
if point.y - startPoint.y < 0 && point.x - startPoint.x < 0
{
rect = CGRect(origin: point, size: size)
}
else if point.y - startPoint.y > 0 && point.x - startPoint.x < 0
{
rect = CGRect(origin: CGPoint(x: point.x, y: startPoint.y), size: size)
}
else if point.y - startPoint.y < 0 && point.x - startPoint.x > 0
{
rect = CGRect(origin: CGPoint(x: startPoint.x, y: point.y), size: size)
}
let page = docView.currentPage
let pageBounds = page!.bounds(for: .cropBox)
let newAnnotation = PDFAnnotation(bounds: pageBounds, forType: .circle,withProperties:nil)
newAnnotation.setRect(rect, forAnnotationKey: .rect)
newAnnotation.color = UIColor.black
page!.addAnnotation(newAnnotation)
let size=CGSize(宽度:abs(point.x-startPoint.x),高度:abs(point.y-startPoint.y))
var rect=CGRect(原点:起始点,大小:大小)
如果point.y-startPoint.y<0&&point.x-startPoint.x<0
{
rect=CGRect(原点:点,大小:大小)
}
否则,如果point.y-startPoint.y>0&&point.x-startPoint.x<0
{
rect=CGRect(原点:CGPoint(x:point.x,y:startPoint.y),大小:size)
}
否则,如果point.y-startPoint.y<0&&point.x-startPoint.x>0
{
rect=CGRect(原点:CGPoint(x:startPoint.x,y:point.y),大小:size)
}
让page=docView.currentPage
让pageBounds=page!。边界(用于:.cropBox)
让newAnnotation=PDFAnnotation(边界:pageBounds,forType:.circle,withProperties:nil)
newAnnotation.setRect(rect,forAnnotationKey:.rect)
newAnnotation.color=UIColor.black
页addAnnotation(newAnnotation)
您可以使用此代码在PDF页面上绘制圆
let size = CGSize(width: abs(point.x - startPoint.x), height: abs(point.y - startPoint.y))
var rect = CGRect(origin: startPoint, size: size)
if point.y - startPoint.y < 0 && point.x - startPoint.x < 0
{
rect = CGRect(origin: point, size: size)
}
else if point.y - startPoint.y > 0 && point.x - startPoint.x < 0
{
rect = CGRect(origin: CGPoint(x: point.x, y: startPoint.y), size: size)
}
else if point.y - startPoint.y < 0 && point.x - startPoint.x > 0
{
rect = CGRect(origin: CGPoint(x: startPoint.x, y: point.y), size: size)
}
let page = docView.currentPage
let pageBounds = page!.bounds(for: .cropBox)
let newAnnotation = PDFAnnotation(bounds: pageBounds, forType: .circle,withProperties:nil)
newAnnotation.setRect(rect, forAnnotationKey: .rect)
newAnnotation.color = UIColor.black
page!.addAnnotation(newAnnotation)
let size=CGSize(宽度:abs(point.x-startPoint.x),高度:abs(point.y-startPoint.y))
var rect=CGRect(原点:起始点,大小:大小)
如果point.y-startPoint.y<0&&point.x-startPoint.x<0
{
rect=CGRect(原点:点,大小:大小)
}
否则,如果point.y-startPoint.y>0&&point.x-startPoint.x<0
{
rect=CGRect(原点:CGPoint(x:point.x,y:startPoint.y),大小:size)
}
否则,如果point.y-startPoint.y<0&&point.x-startPoint.x>0
{
rect=CGRect(原点:CGPoint(x:startPoint.x,y:point.y),大小:size)
}
让page=docView.currentPage
让pageBounds=page!。边界(用于:.cropBox)
让newAnnotation=PDFAnnotation(边界:pageBounds,forType:.circle,withProperties:nil)
newAnnotation.setRect(rect,forAnnotationKey:.rect)
newAnnotation.color=UIColor.black
页addAnnotation(newAnnotation)