iOS 18th day (4, core animation, clock effect, timer, picture rotation angle, Calayer anchor point, get current, hour, second, minute)

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#import "HMViewController.h"//Seconds to 6 degrees per second .#definePersecenda 6//6 degrees per minute .#definePerminutea 6//Turn 6 degrees per hour clockwise .#definePerhoura 30//turn 6 degrees per minute .#definePerminutehoura 0.5#defineAngle2radian (x) ((x)/180.0 * M_PI)@interfaceHmviewcontroller () {Calayer*_second; Calayer*_minute; Calayer*_hour;} @property (Weak, nonatomic) Iboutlet UIView*Redview, @property (weak, nonatomic) Iboutlet Uiimageview*Clockview;@end@implementationHmviewcontroller- (void) viewdidload{[Super Viewdidload]; //additional setup after loading the view, typically from a nib. //1. Add the second hand[self addsecond]; //2. Add the minute hand[self addmintue]; //3. Add the hour hand[self addhour]; //Creating Timers[Nstimer Scheduledtimerwithtimeinterval:1target:self selector: @selector (update) Userinfo:nil Repeats:yes]; [Self update];}- (void) addhour{cgfloat Imagew=_clockview.bounds.size.width; CGFloat Imageh=_clockview.bounds.size.height; //1. Add the hour handCalayer *hour =[Calayer layer]; //2. Setting anchor pointsHour.anchorpoint = Cgpointmake (0.5,1); //3. Setting the locationHour.position = Cgpointmake (Imagew *0.5, Imageh *0.5); //4. Setting the sizeHour.bounds = CGRectMake (0,0,4, Imageh *0.5- -); //5. RedHour.backgroundcolor =[Uicolor Blackcolor].        Cgcolor; Hour.cornerradius=4; //Add to Layer[_clockview.layer Addsublayer:hour]; _hour=Hour;}//Add minute hand- (void) addmintue{cgfloat Imagew=_clockview.bounds.size.width; CGFloat Imageh=_clockview.bounds.size.height; //1. Add the minute handCalayer *minute =[Calayer layer]; //2. Setting anchor pointsMinute.anchorpoint = Cgpointmake (0.5,1); //3. Setting the locationMinute.position = Cgpointmake (Imagew *0.5, Imageh *0.5); //4. Setting the sizeMinute.bounds = CGRectMake (0,0,2, Imageh *0.5- -); //5. RedMinute.backgroundcolor =[Uicolor Bluecolor].        Cgcolor; //Add to Layer[_clockview.layer Addsublayer:minute]; _minute=minute;}//Add seconds- (void) addsecond{cgfloat Imagew=_clockview.bounds.size.width; CGFloat Imageh=_clockview.bounds.size.height; //1. Add the second handCalayer *second =[Calayer layer]; //2. Setting anchor pointsSecond.anchorpoint = Cgpointmake (0.5,1); //3. Setting the locationSecond.position = Cgpointmake (Imagew *0.5, Imageh *0.5); //4. Setting the sizeSecond.bounds = CGRectMake (0,0,1, Imageh *0.5- -); //5. RedSecond.backgroundcolor =[Uicolor Redcolor].        Cgcolor; //Add to Layer[_clockview.layer Addsublayer:second]; _second=second;}- (void) update{//gets the number of seconds//Get Calendar ObjectNscalendar *calendar =[Nscalendar Currentcalendar]; //Get Date Componentnsdatecomponents *compoents = [Calendar Components:nscalendarunitsecond | Nscalendarunitminute |nscalendarunithour fromdate:[nsdate Date]]; //gets the number of secondsCGFloat sec =Compoents.second; //Get minutesCGFloat minute =Compoents.minute; //Get HoursCGFloat hour =Compoents.hour; //figure out how many degrees the second hand rotates .CGFloat Seconda = sec *Persecenda; //figure out how many degrees the minute hand rotatesCGFloat Minutea = minute *Perminutea; //figure out how many degrees the hour is rotated .CGFloat Houra = Hour *Perhoura; Houra+ = minute *Perminutehoura; //Rotating seconds_second.transform = Catransform3dmakerotation (Angle2radian (Seconda),0,0,1); //Rotating minute hand_minute.transform = Catransform3dmakerotation (Angle2radian (Minutea),0,0,1); //Rotate Hour_hour.transform = Catransform3dmakerotation (Angle2radian (Houra),0,0,1);}@end

iOS 18th day (4, core animation, clock effect, timer, picture rotation angle, Calayer anchor point, get current, hour, second, minute)