ios - How to create circular CGRect -


i using code create rectangle in app. want make rounded. how can that.

- (void)setcroprect:(cgrect)croprect {     if(!cgrectequaltorect(_croprect,croprect)){         _croprect = cgrectoffset(croprect, self.frame.origin.x, self.frame.origin.y);         uigraphicsbeginimagecontextwithoptions(self.bounds.size, no, 0.f);         cgcontextref context = uigraphicsgetcurrentcontext();         [[uicolor blackcolor] setfill];         uirectfill(self.bounds);         cgcontextsetstrokecolorwithcolor(context, [[uicolor whitecolor] colorwithalphacomponent:0.5].cgcolor);         cgcontextstrokerect(context, croprect);         [[uicolor clearcolor] setfill];         uirectfill(cgrectinset(croprect, 1, 1));         self.imageview.image = uigraphicsgetimagefromcurrentimagecontext();          uigraphicsendimagecontext();     } }

i using code crop image in rectangular shape:

- (cgimageref)newtransformedimage:(cgaffinetransform)transform                      sourceimage:(cgimageref)sourceimage                     sourcesize:(cgsize)sourcesize            sourceorientation:(uiimageorientation)sourceorientation                  outputwidth:(cgfloat)outputwidth                     croprect:(cgrect)croprect                imageviewsize:(cgsize)imageviewsize {     cgimageref source = sourceimage;      cgaffinetransform orientationtransform;     [self transform:&orientationtransform andsize:&imageviewsize fororientation:sourceorientation];      cgfloat aspect = croprect.size.height/croprect.size.width;     cgsize outputsize = cgsizemake(outputwidth, outputwidth*aspect);      cgcontextref context = cgbitmapcontextcreate(null,                                                  outputsize.width,                                                  outputsize.height,                                                  cgimagegetbitspercomponent(source),                                                  0,                                                  cgimagegetcolorspace(source),                                                  cgimagegetbitmapinfo(source));     cgcontextsetfillcolorwithcolor(context,  [[uicolor clearcolor] cgcolor]);     cgcontextfillrect(context, cgrectmake(0, 0, outputsize.width, outputsize.height));      cgaffinetransform uicoords = cgaffinetransformmakescale(outputsize.width/croprect.size.width,                                                             outputsize.height/croprect.size.height);     uicoords = cgaffinetransformtranslate(uicoords, croprect.size.width/2.0, croprect.size.height/2.0);     uicoords = cgaffinetransformscale(uicoords, 1.0, -1.0);     cgcontextconcatctm(context, uicoords);      cgcontextconcatctm(context, transform);     cgcontextscalectm(context, 1.0, -1.0);     cgcontextconcatctm(context, orientationtransform);      cgcontextdrawimage(context, cgrectmake(-imageviewsize.width/2.0,                                            -imageviewsize.height/2.0,                                            imageviewsize.width,                                            imageviewsize.height)                        ,source);        cgimageref resultref = cgbitmapcontextcreateimage(context);     cgcontextrelease(context);     return resultref; }

is can use brazier curve crop image also.

you cannot create “circular cgrect”, or rounded cgrect (which appear want). cgrect has origin , width , height. doesn't store corner radiuses (radii).

instead of using uirectfill, need create uibezierpath of rounded rect , fill path. example:

uibezierpath *path = [uibezierpath bezierpathwithroundedrect:self.bounds cornerradius:10]; [[uicolor blackcolor] setfill]; [path fill];

you can stroke path if need to. example:

path = [uibezierpath bezierpathwithroundedrect:croprect cornerradius:10]; path.linewidth = 10; [[[uicolor whitecolor] colorwithalphacomponent:0.5] setstroke]; [path stroke];

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