Synchronization of gyroscope problem!
I managed to have a sample of work using the native extension of Gyroscope. I followed the following steps:
(1) download the extension
(2) added the DONKEY file on the library path in Flash Professional CS 5.5
(3) coded as described in the documentation for the extensions
(4) exported the SWF file
(5) compiled the SWF and the extension using ADT
I worked perfectly. I had a turned 3D cube using gyroscope data.
Well, not exactly calibrated because after awhile app seems to have lost direction.
But I read this is normal and you had to use the accelerator to balance it.
I'm not worried about it even if right now.
(6) and then I added a video DisplayObject that is attached to the camera because I need to make a game of AR.
When I test this gyroscope data seems out of sync with the reality of the time lapse (i.e. made rotations appear seconds after)
and this gets worse and worse when the time elapses. Perhaps the video makes gyro data for synchronization.
Do you have an idea how overcome this problem.
I don't know, so I can't fix it myself with the data source Objective C code.
If you can help my kid would be great, I have a presentation demonstration Friday of this week.
Thank you
Nobody answered so... for those interested in the problem:
(1) when the device is set on high rates resolution produces this Gyroscope GAL.
(2) resolved this lower resolution 480 x 288 to 15 images/s
This on an iPad 2, maybe it depends on memory and other things so can not work for iPad 1 or others.
(3) could not use StageVideo. It seems that he can play only local or videos server but no camera! Adobe help please add this in the future.
Here you have a test code to find that what I have worte in this forum is real:
package {
import flash.display.Sprite;
import com.adobe.nativeExtensions.Gyroscope;
import flash.text.TextField;
import flash.utils.getTimer;
import flash.media.Video;
import flash.media.Camera;
import flash.display.Shape;
import flash.events.MouseEvent;
import flash.events.Event;
import com.adobe.nativeExtensions.GyroscopeEvent;
import flash.net.NetStream;
import flash.media.StageVideo;
import flash.events.StageVideoAvailabilityEvent;
import flash.geom.Rectangle;
public class SampleGyro extends Sprite
{
private var _debugTxt:TextField;
private var _debugShape:Shape;
private var _gyroscope:Gyroscope;
private var _previousTime:Number;
private var _angle:Number = 0;
private var _video:Video;
private var _camera:Camera;
public function SampleGyro()
{
if(Gyroscope.isSupported)
{
_gyroscope = new Gyroscope();
_gyroscope.addEventListener(GyroscopeEvent.UPDATE, gyroscopeHandler);
_previousTime = getTimer();
}
stage.addEventListener(MouseEvent.CLICK, clickHandler);
_video = new Video();
_video.visible = false;
_video.width = stage.stageWidth;
_video.height = stage.stageHeight;
addChild(_video);
_debugShape = new Shape();
_debugShape.x = stage.stageWidth / 2;
_debugShape.y = stage.stageHeight / 2;
_debugShape.z = -10;
_debugShape.graphics.beginFill(0xDD9900);
_debugShape.graphics.drawRect(-50, -50, 100, 100);
addChild(_debugShape);
_debugTxt = new TextField();
_debugTxt.width = 200;
_debugTxt.height = 200;
addChild(_debugTxt);
}
private function clickHandler(event:Event):void
{
if(_video.visible)
{
_video.attachCamera(null);
_video.visible = false;
}
else
{
if(!_camera)
{
_camera = Camera.getCamera();
_camera.setMode(1024, 768, _camera.fps, false);
}
_video.attachCamera(_camera);
_video.visible = true;
}
}
private function gyroscopeHandler(event:GyroscopeEvent)
{
var curTime:Number = getTimer();
var elapsedTime:Number = (curTime - _previousTime) / 1000;
var radians:Number = event.y * elapsedTime;
_previousTime = curTime;
_angle += radians * 180 / Math.PI;
_debugTxt.text = "DEBUG\n";
_debugTxt.appendText("rads/sec: "+event.y+"\n");
_debugTxt.appendText("rads/tick:"+radians+"\n");
if(_camera)
{
_debugTxt.appendText("camera:"+_camera.width+","+_camera.height+","+_camera.fps+"\n");
}
_debugShape.rotationY = _angle;
}
}
}
The code simply creates a square shape to see visually gyroscopic rotation
A TextField to print the values of gyroscopic rotation Y
And an event to listening to a single CLICK anywhere on the screen to activate the camera
and show the video. Try several values for the dimensions of the camera and you will see
only small (480 x 288 to 15 images/s) values will not add the question of FDA/off-synch
Once you run the app try clicking anywhere on the screen and
Video if poster and you will see the gyro values will come much later.
Tags: Adobe Animate
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> I is currently experiencing some problems audio sync with Flash CS3.
> Although I noticed the same problem in Flash 8.
>
> The problem is related to Gets the sound to keep up with the
> animation. We were all our audio put on a tier dedicated to
> the
> main timeline and set mode sync 'stream '. If the audio is all
> in a
> file that runs continuously throughout the comic strip (i.e., the cartoon is 4
(> long minutes and the only audio track is 4 minutes), it's
> half a
> second out of sync by the end of the film.
>
> However, when it comes to multiple audio files (for example, in a 4)
> minute
(> cartoon every line of dialogue is its own individual audio file) the sound
> becomes considerably out of sync - sometimes an audio file will play 4 or 5
> seconds before she is supposed to be in the timeline.
>
> is there a way to solve these problems, and is there more information on
> Why
> they occur? The last of them seems more outrageous tto me. 4 or 5 seconds
> out
> sync, sometimes only 10 or 20 seconds in the movie, is quite a bit
> and not
> acceptable. I know a solution has beeen to keep flash files
> under
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