Another way to take advantage of quartz2d (using cgmutalepathref for layering times)

Source: Internet
Author: User

You can use Cgmutablepathref to create each of the different shapes and add them together to Cgcontext

- (void) DrawRect: (cgrect) rect{cgcontextref ctx=Uigraphicsgetcurrentcontext (); //one, draw the line//1. Create a path FirstCgmutablepathref Linepath =cgpathcreatemutable (); //2. Stitching pathCgpathmovetopoint (Linepath, Nil,0,0); Cgpathaddlinetopoint (Linepath, Nil, -, -); //add path to contextCgcontextaddpath (CTX, Linepath); //second, draw a circleCgmutablepathref Circlepath =cgpathcreatemutable (); Cgpathaddellipseinrect (Circlepath, Nil, CGRectMake ( Max, Max, -, -));        Cgcontextaddpath (CTX, Circlepath); //RenderingCgcontextstrokepath (CTX); //Creat\copy\retain used to do it once. Releasecgpathrelease (Linepath); Cgpathrelease (Circlepath); }

Another way to take advantage of quartz2d (using cgmutalepathref for layering times)

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