def __init__(self, p1, p2):
self.v1 = SoSFVec3f()
self.v2 = SoSFVec3f()
self.v3 = SoSFVec3f()
self.h = SoSFFloat()
self.calc = SoCalculator()
## ============================
self.calc.expression.set1Value(0, "oA=A-h*(A-B)")
self.calc.A.connectFrom(self.v1)
self.calc.B.connectFrom(self.v2)
self.calc.h.connectFrom(self.h)
self.v3.connectFrom(self.calc.oA)
## ============================
self.v1.setValue(p1)
self.v2.setValue(p2)
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
class SegmentoEngines(object):
def __init__(self, p1, p2):
self.v1 = SoSFVec3f()
self.v2 = SoSFVec3f()
self.v3 = SoSFVec3f()
self.h = SoSFFloat()
self.calc = SoCalculator()
## ============================
self.calc.expression.set1Value(0, "oA=A-h*(A-B)")
self.calc.A.connectFrom(self.v1)
self.calc.B.connectFrom(self.v2)
self.calc.h.connectFrom(self.h)
self.v3.connectFrom(self.calc.oA)
## ============================
self.v1.setValue(p1)
self.v2.setValue(p2)
def eval(self, t):
self.h.setValue(t)
return self.v3.getValue().getValue()
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)