ios - ObjectiveC UIBezierPath path close issue -

-

i try hexagon , have issue in close path.

here hexagon, , close path not smooth. enter image description here

here drawing code

    cashapelayer* shapelayer = [cashapelayer layer];     uibezierpath* path = [uibezierpath bezierpath]; //  [path setlinejoinstyle:kcglinejoinround]; //  [path setlinejoinstyle:kcglinejoinbevel];     [path setlinejoinstyle:kcglinejoinmiter]; //  cgfloat dashes[] = {6, 2}; //  [path setlinedash:dashes count:2 phase:0]; //  [path stroke];      cgfloat radians = 100.0;     nsinteger num = 6;     cgfloat interval = 2*m_pi/num;      nsinteger initx = radians*cosf(interval);     nsinteger inity = radians*sinf(interval);      [path movetopoint:cgpointmake(location.x - semiwidth + initx, location.y - semiheight + inity)];     for(int i=1; i<=num; i++){         cgfloat x = radians*cosf(i*interval);         cgfloat y = radians*sinf(i*interval);         [path addlinetopoint:cgpointmake(location.x - semiwidth + x, location.y - semiheight + y)];     }     [path closepath];     shapelayer.path = [path cgpath];     shapelayer.strokecolor = [[uicolor yellowcolor] cgcolor];     shapelayer.fillcolor = [[uicolor browncolor] cgcolor];     shapelayer.linewidth = 4.0f;

also try use different options following no luck

[path setlinejoinstyle:kcglinejoinround]; [path setlinejoinstyle:kcglinejoinbevel]; [path setlinejoinstyle:kcglinejoinmiter];

the problem you're not making first point (the point move-to) same way you're making other points (the points line-to).

nsinteger initx = radians*cosf(interval); nsinteger inity = radians*sinf(interval); [path movetopoint:cgpointmake(     location.x - semiwidth + initx, location.y - semiheight + inity)];

instead, make first point parallel others:

cgfloat x = radians*cosf(0*interval); cgfloat y = radians*sinf(0*interval); [path movetopoint:cgpointmake(     location.x - semiwidth + x, location.y - semiheight + y)];

that's same you'll later i*interval, , emphasize parallelism, i've written 0 0*interval. here's ended with:

enter image description here


Comments

Post a Comment

Popular posts from this blog

Django REST Framework perform_create: You cannot call `.save()` after accessing `serializer.data` -

-
i have following viewset: class artistprofileviewset(viewsets.modelviewset): queryset = artistprofile.objects.all() serializer_class = artistprofileserializer def perform_create(self, serializer): if serializer.is_valid(): serializer.save() with following serializers: class simpleartisttrackserializer(serializers.hyperlinkedmodelserializer): class meta: model = artisttrack fields = (...my fields...) class artistprofileserializer(serializers.hyperlinkedmodelserializer): owners = userserializer(many=true, required=false) tracks = simpleartisttrackserializer(many=true, required=false) class meta: model = artistprofile fields = (...my fields...) i getting following error: assertionerror: cannot call `.save()` after accessing `serializer.data`.if need access data before committing database inspect 'serializer.validated_data' instead. i don't see editing serializer.data object. th...
Read more

Why does Go error when trying to marshal this JSON? -

-
i'm trying rather simple example of trying decode json file structs using golang. however, when attempting error that json: cannot unmarshal object go value of type []main.track which don't understand. here's code in question, , json can found here . package main import ( "encoding/json" "fmt" "net/http" "os" ) // tracks group of track types type tracks struct { tracks []track } // track represents singular track type track struct { name string url string artist artist } // artist represents single artist type artist struct { name string mbid string url string } func main() { url := "http://ws.audioscrobbler.com/2.0/?method=geo.gettoptracks&api_key=c1572082105bd40d247836b5c1819623&format=json&country=netherlands" response, err := http.get(url) if err != nil { fmt.printf("%s\n", err) os.exit(1) } de...
Read more