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DuTween.py
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DuTween.py
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# -*- coding: utf-8 -*-
"""Duduf Tween Machine"""
import sys
from PySide2.QtWidgets import ( # pylint: disable=no-name-in-module
QDialog,
QApplication,
QSlider,
QHBoxLayout,
QDoubleSpinBox,
)
from PySide2.QtCore import ( # pylint: disable=no-name-in-module
Qt,
Slot,
QSignalBlocker,
)
import maya.api.OpenMaya as om # pylint: disable=import-error
import maya.cmds as cmds
vendor = "RxLaboratory"
version = "1.0.0"
debug_mode = False
# <=== GENERAL FUNCTIONS ===>
def maya_useNewAPI():
"""
The presence of this function tells Maya that the plugin produces, and
expects to be passed, objects created using the Maya Python API 2.0.
"""
pass
def getMayaWindow():
app = QApplication.instance() #get the qApp instance if it exists.
if not app:
app = QApplication(sys.argv)
try:
mayaWin = next(w for w in app.topLevelWidgets() if w.objectName()=='MayaWindow')
return mayaWin
except:
return None
def log( message ):
"""Logs a message to the console"""
print( "DuTween: " + message )
# <=== TWEEN FUNCTION ===>
def tween( value=0.5, nodes=None, time=None ):
"""Tweens all/selected attributes on the (selected) nodes,
using the current time by default."""
# Fix args
if isinstance(nodes, list) and not nodes:
nodes = None
if time is None:
time = cmds.timeControl("timeControl1", q=True, ra=True)[0]
# Get nodes
if nodes is None:
nodes = cmds.ls(sl=True)
if not nodes:
return
# Get curves from selection
attributes = cmds.channelBox("mainChannelBox", q=True, sma=True)
if attributes is not None:
curves = []
for attribute in attributes:
for node in nodes:
nodeAttr = node + "." + attribute
if not cmds.objExists(nodeAttr):
continue
curve = cmds.keyframe( nodeAttr, q=True, name=True)
if curve is None:
continue
curves += curve
# get all curves
else:
curves = cmds.keyframe(nodes, q=True, name=True)
# Nothing to do
if curves is None:
return
if len(curves) == 0:
return
# Process
cmds.waitCursor(state=True)
try:
for curve in curves:
tweenCurve( value, curve, time )
except:
raise
finally:
cmds.waitCursor(state=False)
# Set focus to Maya
cmds.currentTime(time)
mayaWin = getMayaWindow()
mayaWin.setFocus()
def tweenCurve( value, curve, time ):
"""Tweens the curve"""
# Get time for next and previous keys...
previousTime = cmds.findKeyframe(curve, which="previous")
nextTime = cmds.findKeyframe(curve, which="next")
# Get previous and next key values
previousValue = cmds.keyframe(curve, time=(previousTime,), q=True, valueChange=True)[0]
nextValue = cmds.keyframe(curve, time=(nextTime,), q=True, valueChange=True)[0]
newValue = previousValue*(1-value) + nextValue*value
# Create new Keyframe or set attribute value
cmds.setKeyframe( curve, time=(time,), v=newValue, breakdown=True)
# snap it
cmds.snapKey(curve, time=(time,))
# <=== UI ===>
class DuTweenUI( QDialog ):
def __init__(self, parent=None):
super(DuTweenUI, self).__init__(parent)
self.__setupUi()
self.__connectEvents()
self.__undoOpened = False
def __setupUi(self):
self.setWindowTitle( "DuTween" )
self.setMinimumWidth(200)
mainLayout = QHBoxLayout(self)
mainLayout.setContentsMargins(6,6,6,6)
mainLayout.setSpacing(3)
self.slider = QSlider(self)
self.slider.setOrientation( Qt.Horizontal )
self.slider.setMaximum(1000)
self.slider.setMinimum(0)
self.slider.setSingleStep(10)
self.slider.setPageStep(100)
#self.slider.setTickPosition( QSlider.TicksBelow )
#self.slider.setTickInterval(100)
self.slider.setValue(500)
mainLayout.addWidget( self.slider )
self.spinBox = QDoubleSpinBox(self)
self.spinBox.setMinimum(0)
self.spinBox.setMaximum(100.0)
self.spinBox.setValue(50.0)
self.spinBox.setSuffix(" %")
mainLayout.addWidget( self.spinBox )
mainLayout.setStretch(0, 100)
mainLayout.setStretch(1, 0)
def __connectEvents(self):
self.slider.sliderPressed.connect(self.__beginSlide)
self.slider.sliderReleased.connect(self.__endSlide)
self.slider.valueChanged.connect(self.__sliderValueChanged)
self.spinBox.valueChanged.connect(self.__spinBoxValueChanged)
@Slot()
def __sliderValueChanged(self, value):
b = QSignalBlocker( self.spinBox )
self.spinBox.setValue( value / 10 )
self.__beginSlide()
self.tween()
@Slot()
def __spinBoxValueChanged(self, value):
b = QSignalBlocker( self.slider )
self.slider.setValue( value * 10 )
self.__beginSlide()
self.tween()
self.__endSlide()
@Slot()
def __beginSlide(self):
if not self.__undoOpened:
cmds.undoInfo(chunkName="DuTween", openChunk=True)
self.__undoOpened = True
@Slot()
def __endSlide(self):
if self.__undoOpened:
cmds.undoInfo(chunkName="DuTween", closeChunk=True)
self.__undoOpened = False
@Slot()
def tween(self):
value = self.spinBox.value() / 100
tween(value)
# <=== CMDS CLASSES ===>
class DuTweenCmd( om.MPxCommand ):
"""The dutween Maya command"""
name = "dutween"
def __init__(self):
om.MPxCommand.__init__(self)
self.ratio = 0.5
@staticmethod
def createCommand():
return DuTweenCmd()
@staticmethod
def createSyntax():
syntax = om.MSyntax()
syntax.addFlag('-r', "-ratio", om.MSyntax.kDouble )
return syntax
def parseArgs(self, args):
parser = om.MArgParser( self.syntax(), args)
if parser.isFlagSet( '-r' ):
self.ratio = parser.flagArgumentDouble('-r', 0)
else:
# Show window
ui = DuTweenUI( getMayaWindow() )
ui.show()
return True
def doIt(self, args):
try:
self.run(args)
except Exception as e:
if debug_mode:
raise e
else:
print(e)
log( "Failed!" )
def run(self, args):
# Parse arguments
if self.parseArgs(args):
return
# Use args to tween
#TODO Use list of nodes from args
cmds.undoInfo(chunkName="DuTween", openChunk=True)
tween( self.ratio )
cmds.undoInfo(chunkName="DuTween", closeChunk=True)
cmds_classes = (
DuTweenCmd,
)
def initializePlugin( obj ):
plugin = om.MFnPlugin(obj, vendor, version)
for c in cmds_classes:
try:
plugin.registerCommand( c.name, c.createCommand, c.createSyntax )
except Exception as e:
if debug_mode:
raise e
else:
print(e)
log( "Failed to register command: %s\n" % c.name )
def uninitializePlugin( obj ):
plugin = om.MFnPlugin(obj, vendor, version)
for c in reversed( cmds_classes ):
try:
plugin.deregisterCommand( c.name )
except Exception as e:
if debug_mode:
raise e
else:
print(e)
log( "Failed to unregister command: %s\n" % c.name )
if __name__ == '__main__':
# UI
ui = DuTweenUI( getMayaWindow() )
ui.show()