def callback(field, func, data=None):
## the function will be called as:
## func(field,sensor)
if data == None:
data = field
sensor = SoFieldSensor(func, data)
sensor.attach(field)
return sensor
class OneShot(QtCore.QObject):
def __init__(self, duration, times):
QtCore.QObject.__init__(self)
self.times = self.timesleft = times
self.oneshot = SoOneShot()
self.oneshot.duration = duration
self.oneshot.flags = SoOneShot.HOLD_FINAL
## necesitamos un SoField para poder extraer el
## valor con getValue()
## can't this value be obtained directly from a SoEngineOutput?
self.value = SoSFFloat()
self.value.connectFrom(self.oneshot.ramp)
self.sensor = SoFieldSensor(self.callback, self.value)
self.sensor.attach(self.value)
connect(self, "finished()", self.cycle)
def callback(self, ffloat, sensor):
t = ffloat.getValue()
# QtCore.QObject.emit(self, QtCore.SIGNAL("ramp(float)"), t)
## 0 <= t <= 1
## nmin <= nmin + (nmax-nmin) * t <= nmax
i = int(self.startFrame + self.spanFrame * t)
QtCore.QObject.emit(self, QtCore.SIGNAL("frameChanged(int)"), i)
if t == 0.0:
self.emit(QtCore.SIGNAL("started()"))
elif t == 1.0:
self.emit(QtCore.SIGNAL("finished()"))
def start(self):
self.oneshot.trigger.touch()
def stop(self):
#self.oneshot.disable = True
self.timesleft = self.times
def setFrameRange(self, nmin, nmax):
self.startFrame = nmin
self.endFrame = nmax
self.spanFrame = nmax - nmin
def cycle(self):
self.timesleft -= 1
if self.timesleft > 0:
self.start()
def setDuration(self, milliseconds):
self.oneshot.duration = milliseconds / 1000.0
def __init__(self, duration, times):
QtCore.QObject.__init__(self)
self.times = self.timesleft = times
self.oneshot = SoOneShot()
self.oneshot.duration = duration
self.oneshot.flags = SoOneShot.HOLD_FINAL
## necesitamos un SoField para poder extraer el
## valor con getValue()
## can't this value be obtained directly from a SoEngineOutput?
self.value = SoSFFloat()
self.value.connectFrom(self.oneshot.ramp)
self.sensor = SoFieldSensor(self.callback, self.value)
self.sensor.attach(self.value)
connect(self, "finished()", self.cycle)
