Picture trimmed round Head

Cut a normal picture into a circle and circle the picture with a circular border

The code extraction is the UIImage classification method, as follows:

1+ (Instancetype) Circleimagewithname: (NSString *) name BorderWidth: (cgfloat) borderWidth bordercolor: (Uicolor *) bordercolor2 {3     //1. Loading the original4UIImage *oldimage =[UIImage imagenamed:name];5     6     //2. Open Context7CGFloat Imagew = OldImage.size.width +2*BorderWidth;8CGFloat Imageh = OldImage.size.height +2*BorderWidth;9Cgsize imageSize =Cgsizemake (Imagew, Imageh);TenUigraphicsbeginimagecontextwithoptions (ImageSize, NO,0.0); One      A     //3. Get the current context -Cgcontextref CTX =Uigraphicsgetcurrentcontext (); -      the     //4. Draw the border (great circle) -[BorderColorSet]; -CGFloat Bigradius = Imagew *0.5;//Circle Radius -CGFloat CenterX = Bigradius;//Center +CGFloat centery =Bigradius; -Cgcontextaddarc (CTX, CenterX, CenterY, Bigradius,0, M_PI *2,0); +Cgcontextfillpath (CTX);//Draw a circle A      at     //5. Small Circle -CGFloat Smallradius = Bigradius-BorderWidth; -Cgcontextaddarc (CTX, CenterX, CenterY, Smallradius,0, M_PI *2,0); -     //cropping (the things that are drawn later will be affected by clipping) - Cgcontextclip (CTX); -      in     //6. Drawing - [Oldimage drawinrect:cgrectmake (BorderWidth, BorderWidth, OldImage.size.width, OldImage.size.height)]; to      +     //7. Take a picture -UIImage *newimage =Uigraphicsgetimagefromcurrentimagecontext (); the      *     //8. End Context $ Uigraphicsendimagecontext ();Panax Notoginseng      -     returnNewImage; the}

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Picture trimmed round Head