/// <summary>
/// Initialize the EasyAR component graph.
/// See https://help.easyar.com/EasyAR%20Sense/v3/Getting%20Started/Getting-Started-with-EasyAR.html
/// </summary>
void CreateEasyAr()
{
camera = CameraDeviceSelector.createCameraDevice(CameraDevicePreference.PreferObjectSensing);
throttler = InputFrameThrottler.create();
inputFrameFork = InputFrameFork.create(2);
join = OutputFrameJoin.create(2);
oFrameBuffer = OutputFrameBuffer.create();
i2OAdapter = InputFrameToOutputFrameAdapter.create();
i2FAdapter = InputFrameToFeedbackFrameAdapter.create();
outputFrameFork = OutputFrameFork.create(2);
bool status = camera.openWithPreferredType(CameraDeviceType.Back);
camera.setSize(new Vec2I(1280, 720));
camera.setFocusMode(CameraDeviceFocusMode.Continousauto);
camera.setBufferCapacity(5 + 7);
if (!status)
{
return;
}
ImageTracker tracker = ImageTracker.create();
LoadFromImage(tracker, "almondblossoms.jpg", "almondblossoms");
LoadFromImage(tracker, "irises.jpg", "irises");
LoadFromImage(tracker, "starrynight.jpg", "starrynight");
tracker.setSimultaneousNum(6);
trackers.Add(tracker);
feedbackFrameFork = FeedbackFrameFork.create(trackers.Count);
camera.inputFrameSource().connect(throttler.input());
throttler.output().connect(inputFrameFork.input());
inputFrameFork.output(0).connect(i2OAdapter.input());
i2OAdapter.output().connect(join.input(0));
inputFrameFork.output(1).connect(i2FAdapter.input());
i2FAdapter.output().connect(feedbackFrameFork.input());
int k = 0;
foreach (ImageTracker _tracker in trackers)
{
feedbackFrameFork.output(k).connect(_tracker.feedbackFrameSink());
_tracker.outputFrameSource().connect(join.input(k + 1));
k++;
}
join.output().connect(outputFrameFork.input());
outputFrameFork.output(0).connect(oFrameBuffer.input());
outputFrameFork.output(1).connect(i2FAdapter.sideInput());
oFrameBuffer.signalOutput().connect(throttler.signalInput());
arComponent = fgScene.CreateComponent <EasyARComponent>();
arComponent.ARFrameUpdated += OnARFrameUpdated;
arComponent.OutputFrameBuffer = oFrameBuffer;
}
private void Assemble()
{
// throttler
iFrameThrottler = InputFrameThrottler.create();
// fork input
iFrameFork = InputFrameFork.create(2 + GetFrameFilterCount <FrameFilter.IInputFrameSink>());
iFrameThrottler.output().connect(iFrameFork.input());
var iFrameForkIndex = 0;
i2OAdapter = InputFrameToOutputFrameAdapter.create();
iFrameFork.output(iFrameForkIndex).connect(i2OAdapter.input());
iFrameForkIndex++;
i2FAdapter = InputFrameToFeedbackFrameAdapter.create();
iFrameFork.output(iFrameForkIndex).connect(i2FAdapter.input());
iFrameForkIndex++;
foreach (var filter in FrameFilters)
{
if (filter is FrameFilter.IInputFrameSink)
{
FrameFilter.IInputFrameSink unit = filter as FrameFilter.IInputFrameSink;
var sink = unit.InputFrameSink();
if (sink != null)
{
iFrameFork.output(iFrameForkIndex).connect(unit.InputFrameSink());
}
if (filter is FrameFilter.IInputFrameSinkDelayConnect)
{
var delayUnit = filter as FrameFilter.IInputFrameSinkDelayConnect;
delayUnit.ConnectedTo(iFrameFork.output(iFrameForkIndex), ResetBufferCapacity);
}
iFrameForkIndex++;
}
}
// feedback
fbFrameFork = FeedbackFrameFork.create(GetFrameFilterCount <FrameFilter.IFeedbackFrameSink>());
i2FAdapter.output().connect(fbFrameFork.input());
var fbFrameForkIndex = 0;
foreach (var filter in FrameFilters)
{
if (filter is FrameFilter.IFeedbackFrameSink)
{
FrameFilter.IFeedbackFrameSink unit = filter as FrameFilter.IFeedbackFrameSink;
fbFrameFork.output(fbFrameForkIndex).connect(unit.FeedbackFrameSink());
fbFrameForkIndex++;
}
}
// join
oFrameJoin = OutputFrameJoin.create(1 + GetFrameFilterCount <FrameFilter.IOutputFrameSource>());
var joinIndex = 0;
foreach (var filter in FrameFilters)
{
if (filter is FrameFilter.IOutputFrameSource)
{
FrameFilter.IOutputFrameSource unit = filter as FrameFilter.IOutputFrameSource;
unit.OutputFrameSource().connect(oFrameJoin.input(joinIndex));
joinIndex++;
}
}
i2OAdapter.output().connect(oFrameJoin.input(joinIndex));
// fork output for feedback
oFrameFork = OutputFrameFork.create(2);
oFrameJoin.output().connect(oFrameFork.input());
oFrameBuffer = OutputFrameBuffer.create();
oFrameFork.output(0).connect(oFrameBuffer.input());
oFrameFork.output(1).connect(i2FAdapter.sideInput());
// signal throttler
oFrameBuffer.signalOutput().connect(iFrameThrottler.signalInput());
// connect source
if (FrameSource != null)
{
FrameSource.Connect(iFrameThrottler.input());
}
// set BufferCapacity
ResetBufferCapacity();
if (FrameSource.HasSpatialInformation)
{
RequireWorldCenter = true;
}
foreach (var filter in FrameFilters)
{
if (filter is SurfaceTrackerFrameFilter)
{
if (RequireWorldCenter)
{
throw new InvalidOperationException(typeof(SurfaceTracker) + " + VIOCameraDevice is not supported");
}
RequireWorldCenter = true;
}
}
Ready = true;
}