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waterfall.py
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waterfall.py
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import sys
import random
import maya.OpenMaya as OpenMaya
import maya.OpenMayaMPx as OpenMayaMPx
import maya.OpenMayaFX as OpenMayaFX
import maya.cmds as cmds
commandName = 'waterfall'
class Waterfall(OpenMayaMPx.MPxCommand):
# Contador de numero de instancias
instanceId = 0
# Valores por defecto
default_numTurbulence = 3
default_dewRate = 20
default_spumeRate = 10
default_waterRate = 20
default_floor = -20
default_gravity = 100
default_turbulence_low = 100
default_turbulence_high = 100
def __init__(self):
OpenMayaMPx.MPxCommand.__init__(self)
# Asignando un nombre unico a la instancia
self.instanceName = commandName + str(Waterfall.instanceId)
Waterfall.instanceId += 1
# Nombres de sistema de particulas de gotas, espuma y agua
self.dewSystemName = self.instanceName + '_Dew'
self.spumeSystemName = self.instanceName + '_Spume'
self.waterSystemName = self.instanceName + '_water'
self.dewSystemShapeName = self.dewSystemName + 'Shape'
self.spumeSystemShapeName = self.spumeSystemName + 'Shape'
self.waterSystemShapeName = self.waterSystemName + 'Shape'
# Nombres de emisores de particulas de gotas, espuma y agua
self.dewEmitterName = self.instanceName + '_DewEmiter'
self.spumeEmitterName = self.instanceName + '_SpumeEmiter'
self.waterEmitterName = self.instanceName + '_WaterEmiter'
# Campos de fuerzas
self.gravityName = self.instanceName + '_Gravity'
self.turbulenceLowName = self.instanceName + '_TurbulenceLow'
self.turbulenceHighName = self.instanceName + '_TurbulenceHigh'
# Values
self.numTurbulence = Waterfall.default_numTurbulence
self.dewRate = Waterfall.default_dewRate
self.spumeRate = Waterfall.default_spumeRate
self.waterRate = Waterfall.default_waterRate
self.floor = Waterfall.default_floor
self.turbulenceLow = Waterfall.default_turbulence_low
self.turbulenceHigh = Waterfall.default_turbulence_high
self.gravity = Waterfall.default_gravity
# Control
self.controllerName = self.instanceName + '_Control'
self.dagModifier = OpenMaya.MDagModifier()
def isUndoable(self):
return True
def parseArgs(self, args):
argData = OpenMaya.MArgParser(self.syntax(), args)
if (argData.isFlagSet('nt')):
self.numTurbulence = argData.flagArgumentInt('nt', 0)
if (argData.isFlagSet('dr')):
self.dewRate = argData.flagArgumentInt('dr', 0)
if (argData.isFlagSet('sr')):
self.spumeRate = argData.flagArgumentInt('sr', 0)
if (argData.isFlagSet('wr')):
self.waterRate = argData.flagArgumentInt('wr', 0)
if (argData.isFlagSet('f')):
self.waterRate = argData.flagArgumentDouble('f', 0)
if (argData.isFlagSet('tl')):
self.turbulenceLow = argData.flagArgumentDouble('tl', 0)
if (argData.isFlagSet('th')):
self.turbulenceHigh = argData.flagArgumentDouble('th', 0)
if (argData.isFlagSet('g')):
self.gravity = argData.flagArgumentDouble('g', 0)
def doIt(self, args):
# Procesar argumentos
try:
self.parseArgs(args)
except Exception as e:
print('[' + commandName + '] Sintaxis de flag invalida' )
return
# Guardar seleccion de la superficie
surface = cmds.ls( sl=True)
################################# Control maestro ###############################
cmds.spaceLocator(name=self.controllerName)
cmds.addAttr(ln='floor',at='double',defaultValue=self.floor)
cmds.addAttr(ln='beginTolerance',at='double',defaultValue=0.3,minValue=0,maxValue=1)
cmds.addAttr(ln='gravity',at='double',defaultValue=self.gravity)
cmds.addAttr(ln='magnitudeTLow',at='double',defaultValue=self.turbulenceLow)
cmds.addAttr(ln='magnitudeTHigh',at='double',defaultValue=self.turbulenceHigh)
cmds.addAttr(ln='dewRate',at='double',defaultValue=self.dewRate,minValue=0)
cmds.addAttr(ln='spumeRate',at='double',defaultValue=self.spumeRate,minValue=0)
cmds.addAttr(ln='waterRate',at='double',defaultValue=self.waterRate,minValue=0)
cmds.setAttr(self.controllerName + '.translateX',keyable=False)
cmds.setAttr(self.controllerName + '.translateY',keyable=False)
cmds.setAttr(self.controllerName + '.translateZ',keyable=False)
cmds.setAttr(self.controllerName + '.rotateX',keyable=False)
cmds.setAttr(self.controllerName + '.rotateY',keyable=False)
cmds.setAttr(self.controllerName + '.rotateZ',keyable=False)
cmds.setAttr(self.controllerName + '.scaleX',keyable=False)
cmds.setAttr(self.controllerName + '.scaleY',keyable=False)
cmds.setAttr(self.controllerName + '.scaleZ',keyable=False)
cmds.setAttr(self.controllerName + '.floor',keyable=True)
cmds.setAttr(self.controllerName + '.beginTolerance',keyable=True)
cmds.setAttr(self.controllerName + '.gravity',keyable=True)
cmds.setAttr(self.controllerName + '.magnitudeTLow',keyable=True)
cmds.setAttr(self.controllerName + '.magnitudeTHigh',keyable=True)
cmds.setAttr(self.controllerName + '.dewRate',keyable=True)
cmds.setAttr(self.controllerName + '.spumeRate',keyable=True)
cmds.setAttr(self.controllerName + '.waterRate',keyable=True)
################################ Campos de fuerza ###############################
cmds.select( clear=True )
cmds.gravity(name=self.gravityName,att=0,dx=0,dy=-1,dz=0)
cmds.connectAttr(self.controllerName + '.gravity', self.gravityName + '.magnitude')
cmds.select( clear=True )
cmds.turbulence(name=self.turbulenceLowName,att=0,f=0.8,nsr=0.6)
cmds.expression(s="phaseX = rand(1,100)*10;\nphaseY = rand(1,100)*20;\nphaseZ = rand(1,100)*30;",o=self.turbulenceLowName,alwaysEvaluate=1)
cmds.connectAttr(self.controllerName + '.magnitudeTLow', self.turbulenceLowName + '.magnitude')
cmds.select( clear=True )
cmds.turbulence(name=self.turbulenceHighName,att=0,f=0.8,nsr=0.7)
cmds.expression(s="phaseX = time*135.165;\nphaseY = time+10*135.165;\nphaseZ = time+767*135.165;",o=self.turbulenceHighName,alwaysEvaluate=1)
cmds.connectAttr(self.controllerName + '.magnitudeTHigh', self.turbulenceHighName + '.magnitude')
##################################### Gotas #####################################
# Crear sistema y emisor
cmds.select(surface)
cmds.emitter(n=self.dewEmitterName,type='surface',rate=self.dewRate)
cmds.particle(n=self.dewSystemName)
cmds.connectDynamic(self.dewSystemShapeName,em=self.dewEmitterName)
cmds.connectAttr(self.controllerName + '.dewRate', self.dewEmitterName + '.rate')
# Agregar goal entre superficie y sistema
cmds.select(self.dewSystemName, r=True)
cmds.select(surface, add=True)
cmds.goal(self.dewSystemName, g=surface, w=1, utr=0)
cmds.connectDynamic(self.dewSystemName, f=self.gravityName)
cmds.connectDynamic(self.dewSystemName, f=self.turbulenceLowName)
cmds.connectDynamic(self.dewSystemName, f=self.turbulenceHighName)
# Setear valores
cmds.setAttr(self.dewSystemShapeName+".conserve",0.98)
cmds.setAttr(self.dewSystemShapeName+".lifespanMode",3) # only LifespanPP
cmds.setAttr(self.dewSystemShapeName+".particleRenderType",3) # points
cmds.select(self.dewSystemShapeName)
cmds.addAttr(ln='goalU', dt='doubleArray')
cmds.addAttr(ln='goalU0', dt='doubleArray')
cmds.addAttr(ln='goalV', dt='doubleArray')
cmds.addAttr(ln='goalV0', dt='doubleArray')
cmds.addAttr(ln='opacityPP', dt='doubleArray')
cmds.addAttr(ln='opacityPP0', dt='doubleArray')
cmds.dynExpression(self.dewSystemShapeName, s="goalV = 0;\ngoalU = rand(1);\nopacityPP = 0;",c=1)
cmds.dynExpression(self.dewSystemShapeName, s="goalV += rand(0.1);\nif (goalV > " + self.controllerName + ".beginTolerance){\n\topacityPP = 1;\n}\nif (goalV > 0.99){\n\tgoalPP = 0;\n\tvector $pos = position;\n\tif ($pos.y < " + self.controllerName + ".floor){\n\t\tlifespanPP = 0;\n\t}\n}",rbd=1)
##################################### Espuma ####################################
# Crear sistema y emisor
cmds.select(surface)
cmds.emitter(n=self.spumeEmitterName,type='surface',rate=self.spumeRate)
cmds.particle(n=self.spumeSystemName)
cmds.connectDynamic(self.spumeSystemShapeName,em=self.spumeEmitterName)
cmds.connectAttr(self.controllerName + '.spumeRate', self.spumeEmitterName + '.rate')
# Agregar goal entre superficie y sistema
cmds.select(self.spumeSystemName, r=True)
cmds.select(surface, add=True)
cmds.goal(self.spumeSystemName, g=surface, w=1, utr=0)
cmds.connectDynamic(self.spumeSystemName, f=self.gravityName)
cmds.connectDynamic(self.spumeSystemName, f=self.turbulenceLowName)
cmds.connectDynamic(self.spumeSystemName, f=self.turbulenceHighName)
# Setear valores
cmds.setAttr(self.spumeSystemShapeName+".conserve",0.98)
cmds.setAttr(self.spumeSystemShapeName+".lifespanMode",3) # only LifespanPP
cmds.setAttr(self.spumeSystemShapeName+".particleRenderType",6) # streaks
cmds.select(self.spumeSystemShapeName)
cmds.addAttr(ln='goalU', dt='doubleArray')
cmds.addAttr(ln='goalU0', dt='doubleArray')
cmds.addAttr(ln='goalV', dt='doubleArray')
cmds.addAttr(ln='goalV0', dt='doubleArray')
cmds.addAttr(ln='opacityPP', dt='doubleArray')
cmds.addAttr(ln='opacityPP0', dt='doubleArray')
cmds.dynExpression(self.spumeSystemShapeName, s="goalV = 0;\ngoalU = rand(1);\nopacityPP = 0;",c=1)
cmds.dynExpression(self.spumeSystemShapeName, s="goalV += rand(0.1);\nif (goalV > " + self.controllerName + ".beginTolerance){\n\topacityPP = 1;\n}\nif (goalV > 0.99){\n\tgoalPP = 0;\n\tvector $pos = position;\n\tif ($pos.y < " + self.controllerName + ".floor){\n\t\tlifespanPP = 0;\n\t}\n}",rbd=1)
###################################### Agua #####################################
# Crear sistema y emisor
cmds.select(surface)
cmds.emitter(n=self.waterEmitterName,type='surface',rate=self.waterRate)
cmds.particle(n=self.waterSystemName)
cmds.connectDynamic(self.waterSystemShapeName,em=self.waterEmitterName)
cmds.connectAttr(self.controllerName + '.waterRate', self.waterEmitterName + '.rate')
# Agregar goal entre superficie y sistema
cmds.select(self.waterSystemName, r=True)
cmds.select(surface, add=True)
cmds.goal(self.waterSystemName, g=surface, w=1, utr=0)
cmds.connectDynamic(self.waterSystemName, f=self.gravityName)
cmds.connectDynamic(self.waterSystemName, f=self.turbulenceLowName)
cmds.connectDynamic(self.waterSystemName, f=self.turbulenceHighName)
# Setear valores
cmds.setAttr(self.waterSystemShapeName+".conserve",0.98)
cmds.setAttr(self.waterSystemShapeName+".lifespanMode",3) # only LifespanPP
cmds.setAttr(self.waterSystemShapeName+".particleRenderType",7) # Bubble
cmds.select(self.waterSystemShapeName)
cmds.addAttr(ln='threshold',at='float',defaultValue=0.75,minValue=0,maxValue=10)
#cmds.addAttr(ln='radius',at='float',defaultValue=0.75,minValue=0,maxValue=20)
cmds.addAttr(ln='radiusPP',dt='doubleArray')
cmds.addAttr(ln='radiusPP0',dt='doubleArray')
cmds.setAttr(self.waterSystemShapeName+".threshold",0.75)
cmds.select(self.waterSystemShapeName)
cmds.addAttr(ln='goalU', dt='doubleArray')
cmds.addAttr(ln='goalU0', dt='doubleArray')
cmds.addAttr(ln='goalV', dt='doubleArray')
cmds.addAttr(ln='goalV0', dt='doubleArray')
cmds.dynExpression(self.waterSystemShapeName, s="goalV = 0;\ngoalU = rand(1);\nif (rand(1) < 0.25){\n\tradiusPP = rand(0.7);\n} else {\n\tradiusPP = rand(1,2);\n}",c=1)
cmds.dynExpression(self.waterSystemShapeName, s="goalV += rand(0.1);\nif (goalV > 0.99){\n\tgoalPP = 0;\n\tvector $pos = position;\n\tif ($pos.y < " + self.controllerName + ".floor){\n\t\tlifespanPP = 0;\n\t}\n}",rbd=1)
cmds.select(self.controllerName)
# cmds.getAttr()
self.dagModifier.doIt()
def redoIt(self):
self.dagModifier.doIt()
def undoIt(self):
self.dagModifier.undoIt()
def getDagPathToObject(self, objectName):
selectionList = OpenMaya.MSelectionList()
OpenMaya.MGlobal.getSelectionListByName(objectName,selectionList)
dagPath = OpenMaya.MDagPath()
selectionList.getDagPath(0,dagPath)
return dagPath
# Retorna una instancia del comando
def cmdCreator():
return OpenMayaMPx.asMPxPtr(Waterfall())
def syntaxCreator():
# Crea una instancia de MSyntax con la sintaxis que querramos
syntax = OpenMaya.MSyntax()
# Agregando los flags
syntax.addFlag('nt', 'numTurbulence', OpenMaya.MSyntax.kDouble)
syntax.addFlag('dr', 'dewRate', OpenMaya.MSyntax.kDouble)
syntax.addFlag('sr', 'spumeRate', OpenMaya.MSyntax.kDouble)
syntax.addFlag('wr', 'waterRate', OpenMaya.MSyntax.kDouble)
syntax.addFlag('f' , 'floor', OpenMaya.MSyntax.kDouble)
syntax.addFlag('tl' , 'turbulenceLow', OpenMaya.MSyntax.kDouble)
syntax.addFlag('th' , 'turbulenceHigh', OpenMaya.MSyntax.kDouble)
syntax.addFlag('g' , 'gravity', OpenMaya.MSyntax.kDouble)
return syntax
def initializePlugin(mObject):
plugin = OpenMayaMPx.MFnPlugin(mObject)
try:
plugin.registerCommand(commandName, cmdCreator, syntaxCreator)
except:
sys.stderr.write('Fallo al registrar el commando: ' + commandName)
def uninitializePlugin(mObject):
plugin = OpenMayaMPx.MFnPlugin(mObject)
try:
plugin.deregisterCommand(commandName)
except:
sys.stderr.write('Fallo al registrar el commando: ' + commandName)
# Uso
'''
import maya.cmds as cmds
cmds.flushUndo()
cmds.waterfall()
cmds.waterfall(np=100, dim=(3,5,2))
'''