Maya で float 値をビューポート上に注釈として表示する

displayFloatAttrAnnotation.py

import maya.cmds as mc
import maya.mel as mel

def displayFloatAttrAnnotation(offsetY=0):
	selList = mc.ls(sl=True)
	if len(selList) == 0:
		mc.warning("Please select any object...")
		return

	channelBox = mel.eval('global string $gChannelBoxName; $temp=$gChannelBoxName;')
	selAttrList = mc.channelBox(channelBox, q=True, selectedMainAttributes=True)
	if selAttrList is None:
		mc.warning("Please select any attribute in ChannelBox.")
		return

	selObj  = selList[0]
	selAttr = selAttrList[0]
	displayAttrName = "{}_{}".format(selObj, selAttr)

	defaultFloatAttrAnnName = "FloatAttrAnnotationNode"
	floatAttrAnnName = "{}_{}".format(defaultFloatAttrAnnName, displayAttrName)
	oldFloatAttrAnn = mc.ls("*{}*".format(floatAttrAnnName))
	if len(oldFloatAttrAnn) > 0:
		mc.delete(oldFloatAttrAnn)

	pt = mc.particle(name=floatAttrAnnName, position=[0, 0, 0], conserve=True)
	ptShape = pt[1]
	mc.setAttr("{}.particleRenderType".format(ptShape), 2)

	mc.addAttr(ptShape, longName=displayAttrName, attributeType="float", keyable=True)

	mel.eval('addAttr -is true -ln "pointSize" -at long -min 1 -max 60 -dv 2 {};'.format(ptShape))
	mel.eval('addAttr -is true -ln "selectedOnly" -at bool -dv false {};'.format(ptShape))
	mel.eval('addAttr -is true -dt "string" -ln "attributeName" {};'.format(ptShape))

	mc.setAttr("{}.attributeName".format(ptShape), displayAttrName, type="string")

	mc.connectAttr("{}.{}".format(selObj, selAttr), "{}.{}".format(ptShape, displayAttrName), force=True)

	mc.pointConstraint(selObj, floatAttrAnnName, offset=[0, offsetY, 0])

#displayFloatAttrAnnotation()
displayFloatAttrAnnotation(0.5)