def __lerp(self, functorFunc, duration, blendType, taskName=None):
"""
__lerp(self, functorFunc, float, string, string)
Basic lerp functionality used by other lerps.
Fire off a lerp. Make it a task if taskName given.
"""
# functorFunc is a function which can be called to create a functor.
# functor creation is defered so initial state (sampled in functorFunc)
# will be appropriate for the time the lerp is spawned
from direct.task import Task
from direct.interval import LerpBlendHelpers
from direct.task.TaskManagerGlobal import taskMgr
# upon death remove the functorFunc
def lerpUponDeath(task):
# Try to break circular references
try:
del task.functorFunc
except:
pass
try:
del task.lerp
except:
pass
# make the task function
def lerpTaskFunc(task):
from pandac.Lerp import Lerp
from pandac.ClockObject import ClockObject
from direct.task.Task import Task, cont, done
if task.init == 1:
# make the lerp
functor = task.functorFunc()
task.lerp = Lerp(functor, task.duration, task.blendType)
task.init = 0
dt = globalClock.getDt()
task.lerp.setStepSize(dt)
task.lerp.step()
if (task.lerp.isDone()):
# Reset the init flag, in case the task gets re-used
task.init = 1
return (done)
else:
return (cont)
# make the lerp task
lerpTask = Task.Task(lerpTaskFunc)
lerpTask.init = 1
lerpTask.functorFunc = functorFunc
lerpTask.duration = duration
lerpTask.blendType = LerpBlendHelpers.getBlend(blendType)
lerpTask.setUponDeath(lerpUponDeath)
if (taskName == None):
# don't spawn a task, return one instead
return lerpTask
else:
# spawn the lerp task
taskMgr.add(lerpTask, taskName)
return lerpTask
def __lerp(self, functorFunc, duration, blendType, taskName=None):
"""
__lerp(self, functorFunc, float, string, string)
Basic lerp functionality used by other lerps.
Fire off a lerp. Make it a task if taskName given.
"""
# functorFunc is a function which can be called to create a functor.
# functor creation is defered so initial state (sampled in functorFunc)
# will be appropriate for the time the lerp is spawned
from direct.task import Task
from direct.interval import LerpBlendHelpers
from direct.task.TaskManagerGlobal import taskMgr
# upon death remove the functorFunc
def lerpUponDeath(task):
# Try to break circular references
try:
del task.functorFunc
except:
pass
try:
del task.lerp
except:
pass
# make the task function
def lerpTaskFunc(task):
from pandac.Lerp import Lerp
from pandac.ClockObject import ClockObject
from direct.task.Task import Task, cont, done
if task.init == 1:
# make the lerp
functor = task.functorFunc()
task.lerp = Lerp(functor, task.duration, task.blendType)
task.init = 0
dt = globalClock.getDt()
task.lerp.setStepSize(dt)
task.lerp.step()
if (task.lerp.isDone()):
# Reset the init flag, in case the task gets re-used
task.init = 1
return(done)
else:
return(cont)
# make the lerp task
lerpTask = Task.Task(lerpTaskFunc)
lerpTask.init = 1
lerpTask.functorFunc = functorFunc
lerpTask.duration = duration
lerpTask.blendType = LerpBlendHelpers.getBlend(blendType)
lerpTask.setUponDeath(lerpUponDeath)
if (taskName == None):
# don't spawn a task, return one instead
return lerpTask
else:
# spawn the lerp task
taskMgr.add(lerpTask, taskName)
return lerpTask
def __autoLerp(self, functorFunc, time, blendType, taskName):
"""_autoLerp(self, functor, float, string, string)
This lerp uses C++ to handle the stepping. Bonus is
its more efficient, trade-off is there is less control"""
from pandac import AutonomousLerp
from direct.interval import LerpBlendHelpers
# make a lerp that lives in C++ land
functor = functorFunc()
lerp = AutonomousLerp.AutonomousLerp(functor, time,
LerpBlendHelpers.getBlend(blendType),
base.eventHandler)
lerp.start()
return lerp
def __autoLerp(self, functorFunc, time, blendType, taskName):
"""_autoLerp(self, functor, float, string, string)
This lerp uses C++ to handle the stepping. Bonus is
its more efficient, trade-off is there is less control"""
from pandac import AutonomousLerp
from direct.interval import LerpBlendHelpers
# make a lerp that lives in C++ land
functor = functorFunc()
lerp = AutonomousLerp.AutonomousLerp(functor, time,
LerpBlendHelpers.getBlend(blendType),
base.eventHandler)
lerp.start()
return lerp
