Any idea hw to remove d flickering???pls do help ....
On Aug 26, 7:21 pm, tina lincon <tina.theresalin...@wipro.com> wrote:
> I am doing an application-infinitely rotating 3D cylinder in
> openGl.The speed varies with finger touch but wen i reduce the speed,i
> can see flickering happening in animation towards right and
> left.Initialy I thought it is because of the linked list im updating
> but found out there is no such problem with my linked list .I'm using
> a thread here for a small delay after each 30 degree rotation
> drawing.I cant do it widout the thread coz i need a sleep or a delay
> after each 30 degree drawing,if i remove the thread and implement the
> code in thread inside my onDraw frame, the curvature rotation itself
> goes and it appears that images are just left shifting n right
> shifting coz the sleep is not getting identified in onDraw frame.So i
> cant implement my logic here widout using thread..so thread is a must
> in my logic but i guess the flickering is due to my thread...Is the
> flickering issue during animation because of the thread?please do help
> me with this flickering issue......dis is d thread part im using in my
> code.........
> Runnable r1=new Runnable()
> {
> //Thread t1=new Thread(r1);
> //t1.start();
>
> public void run()
> {
> //t1.start();
> while(true){
>
> if(rotateFlagRight)
> {
> mRenderer.rotationFlag = 1;
>
> //System.out.println("positive value of dx...."+dx);
>
> for(int i=0;i<=30;i++)
> {
> mRenderer.mAngleXX= i;
> if ((dx>10)&& (dx<50))
> {
> try {
>
> Thread.sleep(100);
> }
> catch (InterruptedException e1) {}
> }
> else if ((dx>50)&&
> (dx<100))
> {
> try {
>
> Thread.sleep(10);
> }
> catch (InterruptedException e1) {}
> }
> else if ((dx>100)&&
> (dx<150))
> {
> try {
>
> Thread.sleep(8);
> }
> catch (InterruptedException e1) {}
> }
> else if ((dx>150)&&
> (dx<200))
> {
> try {
>
> Thread.sleep(7);
> }
> catch (InterruptedException e1) {}
> }
> else if ((dx>200)&&
> (dx<250))
> {
> try {
>
> Thread.sleep(5);
> }
> catch (InterruptedException e1) {}
> }
> else if ((dx>250)&&
> (dx<300))
> {
> try {
>
> Thread.sleep(4);
> }
> catch (InterruptedException e1) {}
> }
> else if ((dx>300)&&
> (dx<350))
> {
> try {
>
> Thread.sleep(3);
> } catch
> (InterruptedException e1) {}
> }
> else if ((dx>350))
> {
> try {
>
> Thread.sleep(2);
> }
> catch (InterruptedException e1) {}
> }
> }
>
> mRenderer. listPhotos();
> mRenderer.rotationFlag=0;
> }
> if(rotateFlagLeft)
> {
> //if(rotateFlagLeft)
> mRenderer.rotationFlag = 2;
>
> //System.out.println("Negative value of dx...."+dx);
> for(int i=0;i>=-30;i--)
> {
> mRenderer.mAngleXX= i;
> if ((dx<-350))
> {
> try {
>
> Thread.sleep(2);
> }
> catch (InterruptedException e1) {}
> }
> if ((dx<-300) &&
> (dx>-350))
> {
> try {
>
> Thread.sleep(3);
> }
> catch (InterruptedException e1) {}
> }
> if ((dx<-250) &&
> (dx>-300))
> {
> try {
>
> Thread.sleep(4);
> }
> catch (InterruptedException e1) {}
> }
> if ((dx<-200) &&
> (dx>-250))
> {
> try {
>
> Thread.sleep(5);
> }
> catch (InterruptedException e1) {}
> }
> if ((dx<-150) &&
> (dx>-200))
> {
> try {
>
> Thread.sleep(7);
> }
> catch (InterruptedException e1) {}
> }
> else if
> ((dx<-100)&&(dx>-150))
> {
> try {
>
> Thread.sleep(8);
> }
> catch (InterruptedException e1) {}
> }
> else if
> ((dx<-50)&&(dx>-100))
> {
> try {
>
> Thread.sleep(10);
> }
> catch (InterruptedException e1) {}
> }
> else if
> ((dx<-10)&&(dx>-50))
> {
> try {
>
> Thread.sleep(100);
> }
> catch (InterruptedException e1) {}
> }
>
> }
> //}
> mRenderer.listPhotos();
> mRenderer.rotationFlag=0;
>
> //continue;
>
> }
> if(!rotateFlagLeft){
> if(!rotateFlagRight)
> {
> rotateFlagLeft=false;
> rotateFlagRight=false;
> }
>
> }
> }
> }
> };
> please do help me to reduce the flickering.Thanks in advance
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