ios - How to crop UIImage with UIBeziePath with all scale factors? -


i'm trying crop uiimage given uibezierpath i've drawn in view.

code:

// "self.imageedited" initial image needs cropped let path = .... //my uibezierpath  let layer = cashapelayer() layer.path = path.cgpath  self.imagetoeditview.layer.mask = layer  uigraphicsbeginimagecontextwithoptions(self.imageedited.size, false, 1.0) // <-- why it's not working 0.0 ? self.imagetoeditview.layer.render(in: uigraphicsgetcurrentcontext()!) let image = uigraphicsgetimagefromcurrentimagecontext() uigraphicsendimagecontext()  //here "image" cropped haves white background  let croppedcgimage = image?.cgimage?.cropping(to: path.cgpath.boundingbox) let croppedimage = uiimage(cgimage: croppedcgimage!) self.imagetoeditview.layer.mask = nil uiimagewritetosavedphotosalbum(croppedimage, nil, nil, nil)

this code works, crops image desired. if change scale factor of uigraphicsbeginimagecontextwithoptions 0.0 (to default scale of device, create same "image" when runs this:

let croppedcgimage = image?.cgimage?.cropping(to: path.cgpath.boundingbox)

i not right image cropped. crops different portion.
should scale path?


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