GIF time according to the given constant time 1.5s, the disadvantage is that if the current method as a generic class method, this 1.5s is very unscientific. So the bottom-up method is to first calculate the total length of time for the picture. Perform the animation again.#import TotalTime; Cadisplaylink *displaylink;} @end @implementation motionactiveagegif@synthesize gitview; @synthesize lastgifview;-(Instancetype) Initwithname: ( NSString *) G
phase, the code is as follows:
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-(void)startLoading{[_displayLinkinvalidate];self.displayLink=[CADisplayLinkdisplayLinkWithTarget:selfselector:@selector(updateWave:)];[_displayLinkaddToRunLoop:[NSRunLoopcurrentRunLoop]forMode:NSRunLoopCommonModes];} -(void)updateWave:(CADisplayLink*)displayLink{self.phase+=8;//逐渐累加初相self.waveSinLayer.path=[selfcreateSinPath].CGPath;}-(UIBez
callback, all the intermediate state is submitted to the GPU to display, if there is animation, through the DisplayLink stable refresh mechanism will continue to wake up Runloop, This makes it possible for the observer callback to be triggered continuously, thus updating the property value of the animation and drawing it according to the time.In order not to block the main thread, core Animation is an abstraction of OpenGL ES, so most of the renderin
reference to the pointer. Java garbage collection will take him back. Implements and returns the stored Delete node.The Code large box is as follows:PublicLink Deletefirst () {Link Temp= First ; // temporarily Save this link node (that is, to be deleted) from the first referenceFirst = first.next; Point first to the next reference of the link link that he refers toreturn temp; // returns the link node to be deleted}This makes it clear that the relationship between Java object references is eas
() // displays array contents {system. out. print ("A ="); For (Int J = 0; j
Package chap07; Class link {public long dData; // data itempublic link next; // next link in list // --------------------------------------------------------------- public link (long dd) // constructor {dData = dd;} // ----------------------------------------------------------------- public void displaylink () // display this link {system. out. print (dData + "") ;}// end
rate 2> low Refresh speed requirements, suitable for slow refresh 3> Create a timer returns a new timer, but does not start the timer and needs to call The Fire method+ (Nstimer *) Timerwithtimeinterval: (nstimeinterval) ti target: (ID) atarget selector: (SEL) Aselector UserInfo: (ID) UserInfo repeats: (BOOL) yesorno; return a new timer and start the timer immediately + (Nstimer *) Scheduledtimerwithtimeinterval: (nstimeinterval) ti target: (ID) atarget selector: (SEL) Aselector U
notified. At this time, the CA registered Observer will be in the callback, all the intermediate state is submitted to the GPU to display, if there is animation, the CA will be DisplayLink and other mechanisms to trigger the related process multiple times.ASDK here simulates this mechanism of Core Animation: All modifications and commits to Asnode, some of which are required to be executed in the main thread. When this happens, Asnode will encapsulat
2011 up to now, no more Windows drivers.Recently, as a result of the project needs, try to change a graphics card driver (kmdod), in practice, I proved in theory to a driving architecture is correct or not. (USB Display = Kmdod + avstream).Among them, Kmdod is the completion of the display part of the function, complete the VIDPN (Video present network), the driver of the original post physical device into a USB physical device.And avstream The reason for this, the completion is due to the USB V
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