[Maya]OpenMayaでNurbsCurve

2016以降(api2.0使用)

import maya.api.OpenMaya as om

curveFn = om.MFnNurbsCurve()
deg = 1
vts = om.MPointArray()
vts.append( om.MPoint(1,0,-1) )
vts.append( om.MPoint(-1,0,-1) )
vts.append( om.MPoint(-1,0,1) )
vts.append( om.MPoint(1,0,1) )
vts.append( om.MPoint(1,0,-1) )
span = len(vts) - deg
nknots    = span + 2*deg - 1
knots = om.MDoubleArray()
for i in xrange(nknots):
    knots.append(i)

sl = om.MGlobal.getActiveSelectionList()
dagPath = sl.getDagPath(0)
node = dagPath.node()
curve = curveFn.create( vts, knots, deg, om.MFnNurbsCurve.kOpen, False, False, node)


2015以前

import maya.OpenMaya as om

curveFn = om.MFnNurbsCurve()
deg = 1
vts = om.MPointArray()
vts.append( om.MPoint(1,0,-1) )
vts.append( om.MPoint(-1,0,-1) )
vts.append( om.MPoint(-1,0,1) )
vts.append( om.MPoint(1,0,1) )
vts.append( om.MPoint(1,0,-1) )
span = vts.length() - deg
nknots    = span + 2*deg - 1
knots = om.MDoubleArray()
for i in xrange(nknots):
    knots.append(i)

sl = om.MSelectionList()
om.MGlobal.getActiveSelectionList(sl)
dagPath = om.MDagPath()
sl.getDagPath(0, dagPath)
node = dagPath.node()
curve = curveFn.create( vts, knots, deg, om.MFnNurbsCurve.kOpen, False, False, node)