def update_position():
m.update_single_frame()
if m.get_frame_markers():
update_time=time.time()
try:
w.setWindowTitle('markers. Update Rate: {0} fps'.format(1./(update_time-last_time)))
except ZeroDivisionError:
pass
global last_time
last_time=update_time
sp3 = gl.GLScatterPlotItem(m.get_frame_markers(), color=(1.0, 0.0, 0.0, 0.5), size=0.1, pxMode=False)
def create_record_object():
"""Returns a data aquisition object consisting of the marker positions of one frame"""
acq = btk.btkAcquisition()
btk.btkAcquisition.Reset(acq)
btk.btkAcquisition.Init(acq, len(m.get_frame_markers()), 1)
return acq
def create_record_object():
"""Returns a data aquisition object consisting of the marker positions of one frame"""
acq=btk.btkAcquisition()
btk.btkAcquisition.Reset(acq)
btk.btkAcquisition.Init(acq,len(m.get_frame_markers()),1)
return acq
def record_frames_markers(acq):
"""Writes the marker positions of one frame to an existing acquisition object
and returns the updated acquisition object.
Args:
acq: Data acquisition object
Returns:
Data acquisition object
"""
frames=acq.GetPointFrameNumber()
markers=m.get_frame_markers()
record_points=acq.GetPoints()
if record_points.GetItemNumber()<len(markers):
btk.btkAcquisition.ResizePointNumber(acq, len(markers))
for i in xrange(len(markers)):
point=acq.GetPoint(i)
point.SetDataSlice(frames-1, *[1000*x for x in markers[i]])
btk.btkAcquisition.ResizeFrameNumber(acq, frames+1) #always one frame more than needed
return acq
def record_frames_markers(acq):
"""Writes the marker positions of one frame to an existing acquisition object
and returns the updated acquisition object.
Args:
acq: Data acquisition object
Returns:
Data acquisition object
"""
frames = acq.GetPointFrameNumber()
markers = m.get_frame_markers()
record_points = acq.GetPoints()
if record_points.GetItemNumber() < len(markers):
btk.btkAcquisition.ResizePointNumber(acq, len(markers))
for i in xrange(len(markers)):
point = acq.GetPoint(i)
point.SetDataSlice(frames - 1, *[1000 * x for x in markers[i]])
btk.btkAcquisition.ResizeFrameNumber(acq, frames +
1) #always one frame more than needed
return acq
