Hi all,
i was wanting to make my own Node that stored Vertex Offset data sorta in the
same structure as a PolyTweak node does. but i want to feed it the offset data.
so that i can just acumulate offsets by creating more DeformerNodes and
assigning offset data.
my question is is what data Type am i looking for to do this. i'm fairly new to
API and at the moment all i have done is used it to get and set data note
create my own node and set its data. Yet!!
i have been looking at the ytwistNode example in the Maya Help(example below).
i think all i need to know is get the right DataStorage in the
while geomIter.isDone() == False:
but what is the data block i should be looking for? is there a section on
setting and storing data to a node?
any help would be great.
john
class yTwistNode(OpenMayaMPx.MPxDeformerNode):
# class variables
angle = OpenMaya.MObject()
# constructor
def __init__(self):
OpenMayaMPx.MPxDeformerNode.__init__(self)
# deform
def deform(self,dataBlock,geomIter,matrix,multiIndex):
#
# get the angle from the datablock
angleHandle = dataBlock.inputValue( self.angle )
angleValue = angleHandle.asDouble()
#
# get the envelope
envelope = OpenMayaMPx.cvar.MPxDeformerNode_envelope
envelopeHandle = dataBlock.inputValue( envelope )
envelopeValue = envelopeHandle.asFloat()
#
# iterate over the object and change the angle
while geomIter.isDone() == False:
point = geomIter.position()
ff = angleValue * point.y * envelopeValue
if ff != 0.0:
cct= math.cos(ff)
cst= math.sin(ff)
tt= point.x*cct-point.z*cst
point.z= point.x*cst + point.z*cct
point.x=tt
geomIter.setPosition( point )
geomIter.next()
--
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