Hi Tenghao,
Thank you for your reply.
As you said, I change some code and now it can read the paintable
attributes properly.(I think)
BUT, when I make it run in MAYA, it doesn't work at all.
Whatever I paint the attribute, it seems that the paintable attribute has
no affect on the deformer.
I don't know what's wrong with my code.
Can you help me?
Thank you very much.
Yixiong Xu.
2018.01.10
import maya.OpenMaya as om
import maya.OpenMayaMPx as ompx
import maya.cmds as cmds
nodeName = 'CustomJiggleDeformer'
nodeID = om.MTypeId(0xBEEF6)
class JiggleDeformerNode(ompx.MPxDeformerNode):
# input
dampingVal = om.MObject()
stiffVal = om.MObject()
goalPos = om.MObject()
jiggleMap = om.MObject()
perGeo = om.MObject()
worldMatrix = om.MObject()
# make ture to connect 'time1.outTime' to 'CustomJiggleDeformer#.time' for
stable simulation.
time = om.MObject()
def __init__(self):
ompx.MPxDeformerNode.__init__(self)
self.currentPositions = om.MPointArray()
self.previousPositions = om.MPointArray()
self.initializeFlag = False
self.previousTime = om.MTime()
self.jiggleMapArray = om.MFloatArray()
def deform(self, dataBlock, geoIterator, local2WorldMatrix, geoIndex):
input = ompx.cvar.MPxGeometryFilter_input
dataHandleInputArray = dataBlock.outputArrayValue(input)
dataHandleInputArray.jumpToElement(geoIndex)
dataHandleInputElement = dataHandleInputArray.outputValue()
# inputMesh
inputGeom = ompx.cvar.MPxGeometryFilter_inputGeom
dataHandleInputGeom = dataHandleInputElement.child(inputGeom)
inputMesh = dataHandleInputGeom.asMesh()
# MFnMesh
inputMFnMesh = om.MFnMesh(inputMesh)
# Envelope
envelope = ompx.cvar.MPxGeometryFilter_envelope
dataHandleEnvolope = dataBlock.inputValue(envelope)
envelopeValue = dataHandleEnvolope.asFloat()
# damping
dataHandleDamping = dataBlock.inputValue(JiggleDeformerNode.dampingVal)
damping = dataHandleDamping.asFloat()
# stiffness
dataHandleStiff = dataBlock.inputValue(JiggleDeformerNode.stiffVal)
stiff = dataHandleStiff.asFloat()
# time
dataHandleTime = dataBlock.inputValue(JiggleDeformerNode.time)
currentTime = dataHandleTime.asTime()
# points' positions in local space
points = om.MPointArray()
geoIterator.allPositions(points)
# test initialize flag for the first time
if not self.initializeFlag:
self.currentPositions.setLength(geoIterator.count())
self.previousPositions.setLength(geoIterator.count())
for i in range(points.length()):
self.currentPositions.set(points[i] * local2WorldMatrix, i)
self.previousPositions.set(self.currentPositions[i], i)
self.previousTime = currentTime
self.initializeFlag = True
# for stable simulation, check the time difference whether it is 1 frame or
not
timeDiff = currentTime.value() - self.previousTime.value()
if timeDiff > 1.0 or timeDiff < 0.0:
self.initializeFlag = False
self.previousTime = currentTime
# dataBlock.setClean()
return
# perGeometry
hGeo = dataBlock.inputArrayValue(JiggleDeformerNode.perGeo)
self.jump2Element(hGeo, geoIndex)
hPerGeo = hGeo.inputValue()
hJiggleMap =
om.MArrayDataHandle(hPerGeo.child(JiggleDeformerNode.jiggleMap))
geoIterator.reset()
self.jiggleMapArray.setLength(geoIterator.count())
for i in range(geoIterator.count()):
self.jump2Element(hJiggleMap, geoIterator.index())
# self.jiggleMapArray.append(hJiggleMap.inputValue().asFloat())
self.jiggleMapArray.set(hJiggleMap.inputValue().asFloat(),
geoIterator.index())
geoIterator.next()
# print self.jiggleMapArray.length()
# print geoIterator.count()
# following lines are just like a FOR loop
# for i in range(geoIterator.count()):
# ......
while not geoIterator.isDone():
goal = points[geoIterator.index()] * local2WorldMatrix
# basic algorithm for jiggle effect
velocity = (self.currentPositions[geoIterator.index()] -
self.previousPositions[geoIterator.index()]) * (1.0 - damping)
newPos = self.currentPositions[geoIterator.index()] + velocity
goalVector = (goal - newPos) * stiff
newPos += goalVector
# store value for the next computing
self.previousPositions.set(self.currentPositions[geoIterator.index()],
geoIterator.index())
self.currentPositions.set(newPos, geoIterator.index())
self.previousTime = om.MTime(currentTime)
# weight
weight = self.weightValue(dataBlock, geoIndex, geoIterator.index())
# jiggleMap
jiggleMapVal = self.jiggleMapArray[geoIterator.index()]
# make point[i] back to local space
points.set(points[geoIterator.index()] + ((newPos *
local2WorldMatrix.inverse()) - points[geoIterator.index()]) * weight *
envelopeValue * jiggleMapVal,
geoIterator.index())
# make it to go to the next iter(loop)
geoIterator.next()
# set the position after iter all points of the geometry
geoIterator.setAllPositions(points)
def jump2Element(self, arrayHandle, index):
# if not arrayHandle.jumpToElement(index):
if index not in range(arrayHandle.elementCount()):
builder = arrayHandle.builder()
builder.addElement(index)
arrayHandle.set(builder)
arrayHandle.jumpToElement(index)
def deformerCreator():
return ompx.asMPxPtr(JiggleDeformerNode())
def nodeInitializer():
MFnNumericAttr = om.MFnNumericAttribute()
MFnUnitAttr = om.MFnUnitAttribute()
MFnMatrixAttr = om.MFnMatrixAttribute()
MFnCompoundAttr = om.MFnCompoundAttribute()
# Create Attributes
# damping
JiggleDeformerNode.dampingVal = MFnNumericAttr.create('damping', 'damp',
om.MFnNumericData.kFloat, 0.05)
MFnNumericAttr.setKeyable(1)
MFnNumericAttr.setMin(0.0)
MFnNumericAttr.setMax(1.0)
# stiffness
JiggleDeformerNode.stiffVal = MFnNumericAttr.create('stiffness', 'stiff',
om.MFnNumericData.kFloat, 0.05)
MFnNumericAttr.setKeyable(1)
MFnNumericAttr.setMin(0.0)
MFnNumericAttr.setMax(1.0)
# time
JiggleDeformerNode.time = MFnUnitAttr.create('time', 'time',
om.MFnUnitAttribute.kTime, 0.0)
MFnUnitAttr.setWritable(1)
MFnUnitAttr.setKeyable(1)
# world Matrix for trigger the deform when user is dragging the geometry
# it is useless for the basic algorithm
JiggleDeformerNode.worldMatrix = MFnMatrixAttr.create('worldMatrix',
'worldMat')
# jiggle map
JiggleDeformerNode.jiggleMap = MFnNumericAttr.create('jiggleMap', 'jiggle',
om.MFnNumericData.kFloat, 0.0)
MFnNumericAttr.setMin(0.0)
MFnNumericAttr.setMax(1.0)
MFnNumericAttr.setArray(True)
MFnNumericAttr.setUsesArrayDataBuilder(True)
# perGeometry
JiggleDeformerNode.perGeo = MFnCompoundAttr.create('perGeometry', 'perGeo')
MFnCompoundAttr.setArray(True)
# MFnCompoundAttr.addChild(JiggleDeformerNode.worldMatrix)
MFnCompoundAttr.addChild(JiggleDeformerNode.jiggleMap)
MFnCompoundAttr.setUsesArrayDataBuilder(True)
# outputGeom
outputGeom = ompx.cvar.MPxGeometryFilter_outputGeom
# Attach Attributes
JiggleDeformerNode.addAttribute(JiggleDeformerNode.dampingVal)
JiggleDeformerNode.addAttribute(JiggleDeformerNode.stiffVal)
JiggleDeformerNode.addAttribute(JiggleDeformerNode.time)
JiggleDeformerNode.addAttribute(JiggleDeformerNode.worldMatrix)
JiggleDeformerNode.addAttribute(JiggleDeformerNode.perGeo)
# Design Circuitry
JiggleDeformerNode.attributeAffects(JiggleDeformerNode.dampingVal,
outputGeom)
JiggleDeformerNode.attributeAffects(JiggleDeformerNode.stiffVal, outputGeom)
JiggleDeformerNode.attributeAffects(JiggleDeformerNode.time, outputGeom)
JiggleDeformerNode.attributeAffects(JiggleDeformerNode.worldMatrix,
outputGeom)
JiggleDeformerNode.attributeAffects(JiggleDeformerNode.jiggleMap,
outputGeom)
def initializePlugin(MObj):
MPlugin = ompx.MFnPlugin(MObj, 'Yixiong Xu', '1.0')
try:
MPlugin.registerNode(nodeName, nodeID, deformerCreator, nodeInitializer,
ompx.MPxNode.kDeformerNode)
# paint default weights
cmds.makePaintable(nodeName, 'weights', at='multiFloat', sm='deformer')
cmds.makePaintable(nodeName, 'jiggleMap', at='multiFloat', sm='deformer')
except:
raise RuntimeError
print 'Failed to register command: %s .\n' % nodeName
def uninitializePlugin(MObj):
MPlugin = ompx.MFnPlugin(MObj)
try:
MPlugin.deregisterNode(nodeID)
except:
raise RuntimeError
print 'Failed to de-register command: %s .\n' % nodeName
在 2019年1月10日星期四 UTC+8上午2:09:02，Tenghao Wang写道：
>
> Hey Yixiong,
> ,
>
> You need to create a float list to store the value per vertex: jiggleMap =
> [] and then read the data from datahandle:
> sudo code:
> MArrayDataHandle jiggleMapHandle = mPerGeometryHandle.child(mJiggleMap)
> jumpToElement(jiggleMapHandle, geoIterator.index()) jiggleMap.append( j
> iggleMapHandle.inputValue().asFloat()) and then you can apply the value
> under this loop:
>
> while not geoIterator.isDone():
>
> value_per_vertex = jiggleMap[geoIterator.index()]
> Hope this helps! Tenghao Wang Sr. Technical Artist Visual Concepts
>
>
> On Wed, Jan 9, 2019 at 2:51 AM 徐一雄 <xuyixi...@gmail.com <javascript:>>
> wrote:
>
>> Hello, everyone:
>> I'm now stuck into a problem of how to make a custom attribute work in a
>> custom deformer node(MPxDeformerNode) in python.
>> As I known, I need to add 2 multi attributes: one for record per-vertex
>> values and the other (parent) multi attributeis to store values for
>> multiple shapes.
>> For now, i have successfully add 2 multi attributes and set one as the
>> other's parent.
>> But I don't know how to get the value per-vertex in the deform function.
>> Can anyone help me to make the following code work?
>> Thank you very much.
>> Two multi attributes: *jiggleMap *for store value per-vertex and *perGeo
>> *is the parent multi attribute.
>>
>> import maya.OpenMaya as om
>> import maya.OpenMayaMPx as ompx
>> import maya.cmds as cmds
>>
>> nodeName = 'CustomJiggleDeformer'
>> nodeID = om.MTypeId(0xBEEF6)
>>
>>
>> class JiggleDeformerNode(ompx.MPxDeformerNode):
>> # input
>> dampingVal = om.MObject()
>> stiffVal = om.MObject()
>> goalPos = om.MObject()
>> jiggleMap = om.MObject()
>>
>> perGeo = om.MObject()
>>
>> worldMatrix = om.MObject()
>>
>> # make ture to connect 'time1.outTime' to 'CustomJiggleDeformer#.time'
>> for stable simulation.
>> time = om.MObject()
>>
>> def __init__(self):
>> ompx.MPxDeformerNode.__init__(self)
>>
>> self.currentPositions = om.MPointArray()
>> self.previousPositions = om.MPointArray()
>>
>> self.initializeFlag = False
>>
>> self.previousTime = om.MTime()
>>
>> self.perGeo = om.MFloatArray()
>>
>> def deform(self, dataBlock, geoIterator, local2WorldMatrix, geoIndex):
>>
>> input = ompx.cvar.MPxGeometryFilter_input
>>
>> dataHandleInputArray = dataBlock.outputArrayValue(input)
>>
>> dataHandleInputArray.jumpToElement(geoIndex)
>>
>> dataHandleInputElement = dataHandleInputArray.outputValue()
>>
>> # inputMesh
>> inputGeom = ompx.cvar.MPxGeometryFilter_inputGeom
>> dataHandleInputGeom = dataHandleInputElement.child(inputGeom)
>> inputMesh = dataHandleInputGeom.asMesh()
>>
>> # MFnMesh
>> inputMFnMesh = om.MFnMesh(inputMesh)
>>
>> # Envelope
>> envelope = ompx.cvar.MPxGeometryFilter_envelope
>> dataHandleEnvolope = dataBlock.inputValue(envelope)
>> envelopeValue = dataHandleEnvolope.asFloat()
>>
>> # damping
>> dataHandleDamping =
>> dataBlock.inputValue(JiggleDeformerNode.dampingVal)
>> damping = dataHandleDamping.asFloat()
>>
>> # stiffness
>> dataHandleStiff = dataBlock.inputValue(JiggleDeformerNode.stiffVal)
>> stiff = dataHandleStiff.asFloat()
>>
>> # time
>> dataHandleTime = dataBlock.inputValue(JiggleDeformerNode.time)
>> currentTime = dataHandleTime.asTime()
>>
>> # points' positions in local space
>> points = om.MPointArray()
>> geoIterator.allPositions(points)
>>
>> # test initialize flag for the first time
>> if not self.initializeFlag:
>> self.currentPositions.setLength(geoIterator.count())
>> self.previousPositions.setLength(geoIterator.count())
>>
>> # perGeometry
>> hGeo =
>> om.MArrayDataHandle(dataBlock.inputArrayValue(JiggleDeformerNode.perGeo))
>> # self.jump2Element(hGeo, geoIndex)
>> hGeoCount = hGeo.elementCount()
>>
>> print 'hGeoCount: ' + str(hGeoCount)
>>
>> if hGeoCount == 0:
>> return
>>
>> for i in range(hGeoCount):
>> hGeo.jumpToElement(i)
>>
>> # self.jump2Element(hGeo, geoIndex)
>>
>> hPerGeo = om.MArrayDataHandle(hGeo.inputArrayValue())
>> hPerGeoCount = hPerGeo.elementCount()
>> print 'hPerGeoCount: ' + str(hPerGeoCount)
>>
>> for i in range(hPerGeoCount):
>> hPerGeo.jumpToElement(i)
>> self.perGeo.append(hPerGeo.inputValue().asFloat())
>>
>> for i in range(points.length()):
>> self.currentPositions.set(points[i] * local2WorldMatrix, i)
>> self.previousPositions.set(self.currentPositions[i], i)
>>
>> self.previousTime = currentTime
>>
>> self.initializeFlag = True
>>
>> # for stable simulation, check the time difference whether it is 1
>> frame or not
>> timeDiff = currentTime.value() - self.previousTime.value()
>>
>> if timeDiff > 1.0 or timeDiff < 0.0:
>> self.initializeFlag = False
>> self.previousTime = currentTime
>> # dataBlock.setClean()
>> return
>>
>> # following lines are just like a FOR loop
>> # for i in range(geoIterator.count()):
>> # ......
>> while not geoIterator.isDone():
>> goal = points[geoIterator.index()] * local2WorldMatrix
>>
>> # basic algorithm for jiggle effect
>> velocity = (self.currentPositions[geoIterator.index()] -
>> self.previousPositions[geoIterator.index()]) * (1.0 - damping)
>> newPos = self.currentPositions[geoIterator.index()] + velocity
>> goalVector = (goal - newPos) * stiff
>> newPos += goalVector
>>
>> # store value for the next computing
>>
>> self.previousPositions.set(self.currentPositions[geoIterator.index()],
>> geoIterator.index())
>> self.currentPositions.set(newPos, geoIterator.index())
>> self.previousTime = om.MTime(currentTime)
>>
>> # weight and envelope
>> weight = self.weightValue(dataBlock, geoIndex,
>> geoIterator.index())
>>
>> # make point[i] back to local space
>> points.set(points[geoIterator.index()] + ((newPos *
>> local2WorldMatrix.inverse()) - points[geoIterator.index()]) * weight *
>> envelopeValue * jiggleMapArray[geoIterator.index()],
>> geoIterator.index())
>>
>> # make it to go to the next iter(loop)
>> geoIterator.next()
>>
>> # set the position after iter all points of the geometry
>> geoIterator.setAllPositions(points)
>>
>> def jump2Element(self, arrayHandle, index):
>>
>> # if not arrayHandle.jumpToArrayElement(index):
>>
>> builder = arrayHandle.builder()
>>
>> builder.addElement(index)
>>
>> arrayHandle.set(builder)
>>
>> arrayHandle.jumpToArrayElement(index)
>>
>>
>> def deformerCreator():
>> return ompx.asMPxPtr(JiggleDeformerNode())
>>
>>
>> def nodeInitializer():
>> MFnNumericAttr = om.MFnNumericAttribute()
>> MFnUnitAttr = om.MFnUnitAttribute()
>> MFnMatrixAttr = om.MFnMatrixAttribute()
>> MFnCompoundAttr = om.MFnCompoundAttribute()
>>
>> # Create Attributes
>> # damping
>> JiggleDeformerNode.dampingVal = MFnNumericAttr.create('damping', 'damp',
>> om.MFnNumericData.kFloat, 0.1)
>> MFnNumericAttr.setKeyable(1)
>> MFnNumericAttr.setMin(0.0)
>> MFnNumericAttr.setMax(1.0)
>>
>> # stiffness
>> JiggleDeformerNode.stiffVal = MFnNumericAttr.create('stiffness',
>> 'stiff', om.MFnNumericData.kFloat, 0.1)
>> MFnNumericAttr.setKeyable(1)
>> MFnNumericAttr.setMin(0.0)
>> MFnNumericAttr.setMax(1.0)
>>
>> # time
>> JiggleDeformerNode.time = MFnUnitAttr.create('time', 'time',
>> om.MFnUnitAttribute.kTime, 0.0)
>> MFnUnitAttr.setWritable(1)
>> MFnUnitAttr.setKeyable(1)
>>
>> # world Matrix for trigger the deform when user is dragging the geometry
>> # it is useless for the basic algorithm
>> JiggleDeformerNode.worldMatrix = MFnMatrixAttr.create('worldMatrix',
>> 'worldMat')
>>
>> # jiggle map
>> JiggleDeformerNode.jiggleMap = MFnNumericAttr.create('jiggleMap',
>> 'jiggle', om.MFnNumericData.kFloat, 0.0)
>> MFnNumericAttr.setMin(0.0)
>> MFnNumericAttr.setMax(1.0)
>> MFnNumericAttr.setArray(True)
>> MFnNumericAttr.setUsesArrayDataBuilder(True)
>>
>> # perGeometry
>> JiggleDeformerNode.perGeo = MFnCompoundAttr.create('perGeometry',
>> 'perGeo')
>> MFnCompoundAttr.setArray(True)
>> # MFnCompoundAttr.addChild(JiggleDeformerNode.worldMatrix)
>> MFnCompoundAttr.addChild(JiggleDeformerNode.jiggleMap)
>> MFnCompoundAttr.setUsesArrayDataBuilder(True)
>>
>> # outputGeom
>> outputGeom = ompx.cvar.MPxGeometryFilter_outputGeom
>>
>> # Attach Attributes
>> JiggleDeformerNode.addAttribute(JiggleDeformerNode.dampingVal)
>> JiggleDeformerNode.addAttribute(JiggleDeformerNode.stiffVal)
>> JiggleDeformerNode.addAttribute(JiggleDeformerNode.time)
>> JiggleDeformerNode.addAttribute(JiggleDeformerNode.worldMatrix)
>> JiggleDeformerNode.addAttribute(JiggleDeformerNode.perGeo)
>>
>> # Design Circuitry
>> JiggleDeformerNode.attributeAffects(JiggleDeformerNode.dampingVal,
>> outputGeom)
>> JiggleDeformerNode.attributeAffects(JiggleDeformerNode.stiffVal,
>> outputGeom)
>> JiggleDeformerNode.attributeAffects(JiggleDeformerNode.time, outputGeom)
>> JiggleDeformerNode.attributeAffects(JiggleDeformerNode.worldMatrix,
>> outputGeom)
>> JiggleDeformerNode.attributeAffects(JiggleDeformerNode.jiggleMap,
>> outputGeom)
>>
>>
>> def initializePlugin(MObj):
>> MPlugin = ompx.MFnPlugin(MObj, 'Yixiong Xu', '1.0')
>>
>> try:
>> MPlugin.registerNode(nodeName, nodeID, deformerCreator,
>> nodeInitializer, ompx.MPxNode.kDeformerNode)
>> # paint default weights
>> cmds.makePaintable(nodeName, 'weights', at='multiFloat',
>> sm='deformer')
>> cmds.makePaintable(nodeName, 'jiggleMap', at='multiFloat',
>> sm='deformer')
>>
>> except:
>> raise RuntimeError
>> print 'Failed to register command: %s .\n' % nodeName
>>
>>
>> def uninitializePlugin(MObj):
>> MPlugin = ompx.MFnPlugin(MObj)
>> try:
>> MPlugin.deregisterNode(nodeID)
>>
>> except:
>> raise RuntimeError
>> print 'Failed to de-register command: %s .\n' % nodeName
>>
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Python Programming for Autodesk Maya" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to python_inside_maya+unsubscr...@googlegroups.com <javascript:>.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/python_inside_maya/21fb16d9-abe6-4949-a9a0-9a66ecb8dbd4%40googlegroups.com
>>
>> <https://groups.google.com/d/msgid/python_inside_maya/21fb16d9-abe6-4949-a9a0-9a66ecb8dbd4%40googlegroups.com?utm_medium=email&utm_source=footer>
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
--
You received this message because you are subscribed to the Google Groups
"Python Programming for Autodesk Maya" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to python_inside_maya+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/python_inside_maya/01703186-1774-47a5-936b-7c4ecb572c31%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
