And don't forget <mx:application frameRate="60"> :) On Thu, Oct 6, 2016 at 10:24 AM, Maxim Solodovnik <solomax...@gmail.com> wrote:
> >> Another possibility: don't attach the events to the stage, but to the > "area" object instead. > Maybe I'm doing something wrong, but this is what I have started from, > and it completely not working in my quickstart app > > will try "screenRedraw", we'll see it will allow more precise coordinates > :) > > On Thu, Oct 6, 2016 at 3:21 PM, Javier Guerrero García > <javi...@gmail.com> wrote: > > And the 60fps? :) > > > > Also, try this: attach ALWAYS the mousemove event listener (even directly > > on MXML) instead of attaching it "on demand", and make mouseDown and > > mouseUp just set a "capturing" variable to either true of false. > > > > Another possibility: don't attach the events to the stage, but to the > > "area" object instead. > > > > Another one: IIRC, there was a "screenRedraw" event, triggering right > after > > each frame is painted (30-60 times per sec). You could attach the > capturing > > function directly to that event, just checking if the "capturing" > variable > > is true or false before proceed with the points.push. > > > > On Thu, Oct 6, 2016 at 10:03 AM, Maxim Solodovnik <solomax...@gmail.com> > > wrote: > > > >> I tried to change the code as follows > >> grab points in event handler [1], then actually draw it after > >> capturing is over [2] > >> The result curve is not smooth in case of fast, long distance moves > >> > >> [1] https://github.com/solomax/FlexSandbox/blob/master/web/ > >> src/Main1.mxml#L37 > >> [2] https://github.com/solomax/FlexSandbox/blob/master/web/ > >> src/Main1.mxml#L31 > >> > >> On Thu, Oct 6, 2016 at 2:37 PM, Javier Guerrero García > >> <javi...@gmail.com> wrote: > >> > Yes, I understood, but you can do it in many ways: > >> > > >> > - Capture mouse coordinates, and draw the new pixel on a bitmap > placed > >> > underneath > >> > - Capture mouse coordinates, and draw a new <Line> object from the > >> last > >> > captured point to the new coordinates, and so on > >> > - Capture mouse coordinates, and perfom a graphics.lineTo on a > Sprite > >> on > >> > each mouse move (a one liner for a one liner :) > >> > > >> > I think the vector approach should perform better on redraws, and I > >> really > >> > do think your problem is right there on the fullscreen redraws: 60fps > or > >> > even 30fps should be more than enough to capture a signature. > >> > > >> > To confirm first, try first separating the areas, and see it that > makes > >> it > >> > smoother :) > >> > > >> > On Thu, Oct 6, 2016 at 9:27 AM, Maxim Solodovnik < > solomax...@gmail.com> > >> > wrote: > >> > > >> >> It sort of "pencil drawing" by mouse/pen > >> >> I'll try to capture points and draw it later(or better in separated > >> thread) > >> >> > >> >> Thanks for the pointer > >> >> > >> >> On Thu, Oct 6, 2016 at 2:23 PM, Javier Guerrero García > >> >> <javi...@gmail.com> wrote: > >> >> > Hi Maxim! > >> >> > > >> >> > Are you capturing the points on line objects, or on a bitmap drawn > at > >> the > >> >> > bottom that has to be interpolated and redrawn on every mouse > >> movement? > >> >> Try > >> >> > separating the capture and paint areas, capturing line objects > >> instead of > >> >> > pixels on a bitmap, or at least draw the bitmap with the lowest > >> posible > >> >> > interpolation quality, to see if it helps. > >> >> > > >> >> > Hope it works :) > >> >> > > >> >> > On Thu, Oct 6, 2016 at 5:49 AM, Maxim Solodovnik < > >> solomax...@gmail.com> > >> >> > wrote: > >> >> > > >> >> >> changing FPS to 60 doesn't help :( (originally it was 30) > >> >> >> Final code for capturing events and drawing is the same as > prototype > >> >> code > >> >> >> still got ugly, non-smooth curve in case mouse moving very fast > >> >> >> > >> >> >> Line in much smoother in Gimp > >> >> >> In fact Flex desktop app produces smooth enough line > >> >> >> will try to create browser quick start and double check > >> >> >> > >> >> >> On Thu, Oct 6, 2016 at 9:18 AM, Maxim Solodovnik < > >> solomax...@gmail.com> > >> >> >> wrote: > >> >> >> > Hello, > >> >> >> > > >> >> >> > Thanks a lot for the quick answers, definitely flex is one of my > >> >> >> > favorite communities :) > >> >> >> > Here is example project: https://github.com/solomax/FlexSandbox > >> >> >> > since it is desktop and tiny it looks not that bad > >> >> >> > In my main project the resulting line is not smooth at all :( > >> >> >> > > >> >> >> > I'll try to check the code and remove any delays, thanks for the > >> >> pointer. > >> >> >> > > >> >> >> > Additionally I'll try to check FFT, I have tried to add > additional > >> >> >> > points and use cubicCurveTo, but was unable to finish this (it > is > >> >> >> > currently commented) > >> >> >> > > >> >> >> > On Thu, Oct 6, 2016 at 1:47 AM, OK <p...@olafkrueger.net> > wrote: > >> >> >> >> Alex Harui wrote > >> >> >> >>>>can't you just up the frame per second of the swf to say 60, > and > >> if > >> >> >> >>>>needed interpolate data points to smooth it? > >> >> >> >>> That is a possibility, but the interpolation code may also > affect > >> >> input > >> >> >> >>> rate. > >> >> >> >> > >> >> >> >> For this approach it might be helpful to google with "spline > >> >> >> interpolation" > >> >> >> >> and "FFT" (Fast Fourier Transformation). Maybe you find some > >> ready to > >> >> >> use > >> >> >> >> AS3 implementations. > >> >> >> >> > >> >> >> >> Olaf > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> -- > >> >> >> >> View this message in context: http://apache-flex-users. > >> >> >> 2333346.n4.nabble.com/Get-mouse-coordinates-on-high- > >> >> >> speed-tp13737p13748.html > >> >> >> >> Sent from the Apache Flex Users mailing list archive at > >> Nabble.com. > >> >> >> > > >> >> >> > > >> >> >> > > >> >> >> > -- > >> >> >> > WBR > >> >> >> > Maxim aka solomax > >> >> >> > >> >> >> > >> >> >> > >> >> >> -- > >> >> >> WBR > >> >> >> Maxim aka solomax > >> >> >> > >> >> > >> >> > >> >> > >> >> -- > >> >> WBR > >> >> Maxim aka solomax > >> >> > >> > >> > >> > >> -- > >> WBR > >> Maxim aka solomax > >> > > > > -- > WBR > Maxim aka solomax >
