motion

I want to track a finger touch on the screen. So what I did was to start recording the position when MotionEvent triggers ACTION_DOWN , but how do I know when the action is finished, at ACTION_CANCEL , or ACTION_UP ? What's the exact difference between them? MotionEvent: ACTION_UP: A pressed gesture has finished, the motion contains the final release location as well as any intermediate points since the last down or move event. ACTION_CANCEL: The current gesture has been aborted. ACTION_CANCEL occurs when the parent takes possession of the motion, for example when the user has dragged enough

I am trying to rotate one of the transparent PNGs on this image. The number part is what I want to rotate. I am able to do this, but it is not what I am trying to achieve I want to rotate the numbers like on a real combination lock. So the user will touch and move their finger in a circle. I looked at less precise image rotation on touch/move events, and they were not sufficient. this is currently my code public boolean onTouch(View v, MotionEvent event) { double r=Math.atan2(event.getX()-lockNumbers.getWidth(), lockNumbers.getHeight()-event.getY()); int rotation=(int)Math.toDegrees(r); switch

i am currently making a iPhone app, and a animation reacts to a small shake, this is my code: static BOOL SJHShaking(UIAcceleration* last, UIAcceleration* current, double threshold) { double deltaX = fabs(last.x - current.x), deltaY = fabs(last.y - current.y), deltaZ = fabs(last.z - current.z); return (deltaX > threshold && deltaY > threshold) || (deltaX > threshold && deltaZ > threshold) || (deltaY > threshold && deltaZ > threshold); } - (id)initWithFrame:(CGRect)frame { if (self) { // Initialization code } return self; } -(void)awakeFromNib{ [super awakeFromNib]; [UIAccelerometer

I'm trying to use HTML5 canvas to make something like a motion blur effect and no success. Basically what I'm trying to do is to take a photo and make it look like "fast forwarded", like when you take a picture and the person moved. There are several libraries for canvas that have implemented various blurring algorithms. EaselJS has implemented x- and y-axis blurring independently, as you can see in this sample. All you might want is a x-axis blur from their libray. derekmc I got here with the opposite problem. I was trying to get rid of blur when scaling images. Fortunately, my problem leads

I have a small problem. I have 2 equation of motion 'ph' and 'ph2' I don´t know how to set ODE to stop calculating 'ph' when x(1)> 0.111 and then starts to calculated 'ph2' again only to 0.111, after that plot 'ph' + 'ph2' to one graph depend on time 'w' i think I have to set some time limitations but dont know how to. I use HELP but no benefit for me. [t,y] = ode45(@ph,[0,w_max],[0,0]); function dx = ph(tt,x) global F1 c m_c Ff p w s ln f_t sig dstr Ren pn Fex Fzmax xz xn l Fz mn Fpp = F1 + c*x(1); if pn<0 pn=abs(pn); end if x(1)<ln pn=spline(w,p,tt)-((2*sig)/dstr*Ren); Fex=3.1416.*f_t.*pn.*

I would like to detect when the phone is in motion, but not all kind of motion. For example picking up or waving the phone should not trigger. I would like ideally to run a code when the phone/person is in > "walking" state. What options I have? you can use a combination of the accelerometer and the digital compass, in phones that have them, to determine a speed and direction. If all you need to do is determine if the person is walking, all you need is the accelerometer. Just process its output for foot steps. There are plenty of tutorials on the web for detecting foot steps with an