我需要有人对我的出口问题有所了解。
工作原理：选择相机（动画与否是可选的）＆gt;＆gt;文件＆gt;＆gt;导出选择＆gt;＆gt;文件类型：.chan（需要将此脚本作为插件加载）
这是问题的起点。它可以创建.text文件，但是，它不是“导出”或将内容写入文本文件，文件大小为零字节。
我正在使用它已编码的当前API，修改代码以添加到某些maya cmds中
有人可以帮助我吗？
import math, sys, string, os
import maya.OpenMaya as OpenMaya
import maya.OpenMayaMPx as OpenMayaMPx
import maya.OpenMayaAnim as OpenMayaAnim
import maya.cmds as cmds
import maya.mel as mel
kPluginTranslatorTypeName = "chan Export/Import"
kVersionNumber = "0.5a"
camSel = []
win_name = "chan_window"
class CustomNodeTranslator(OpenMayaMPx.MPxFileTranslator):
def __init__(self):
OpenMayaMPx.MPxFileTranslator.__init__(self)
def haveWriteMethod(self):
return True
def haveReadMethod(self):
return True
def filter(self):
return " .chan"
def defaultExtension(self):
return "chan"
def writer( self, fileObject, optionString, accessMode ):
try:
fullName = fileObject.fullName()
fileHandle = open(fullName,"w")
selectList = OpenMaya.MSelectionList()
OpenMaya.MGlobal.getActiveSelectionList(selectList)
node = OpenMaya.MObject()
depFn = OpenMaya.MFnDependencyNode()
path = OpenMaya.MDagPath()
iterator = OpenMaya.MItSelectionList(selectList)
animationTime = OpenMayaAnim.MAnimControl()
maxTime = int(animationTime.maxTime().value())
minTime = int(animationTime.minTime().value())
while (iterator.isDone() == 0):
iterator.getDependNode(node)
depFn.setObject(node)
iterator.getDagPath(path, node)
cameraObject = OpenMaya.MFnCamera(path)
transform = OpenMaya.MFnTransform(path)
chanMe = fileExporter(transform, minTime, maxTime, cameraObject)
for all in chanMe():
fileHandle.write(all)
iterator.next()
fileHandle.close()
except:
sys.stderr.write( "Failed to write file information\n")
raise
def processLine( self, lineStr ):
self.importTheChan.writeFrameData(lineStr)
class fileExporter():
""" module for exporting chan files from application. arguments: object, startFrame, endFrame """
def __init__(self, transform, startAnimation, endAnimation, cameraObj):
self.fileExport = []
self.transform = transform
self.cameraObj = cameraObj
self.start = startAnimation
self.end = endAnimation
self.exportWin()
def exportWin(self):
self.expWindow = cmds.window(w=150, h=100, title = "Export Selection" )
cmds.columnLayout( adjustableColumn=True )
form = cmds.formLayout(numberOfDivisions=100)
cmds.radioCollection()
self.chk1 = cmds.radioButton( label='option1', onc = self.opt1On, ofc = self.opt1Off )
self.chk2 = cmds.radioButton( label='option2', onc = self.opt2On, ofc = self.opt2Off )
self.okayBtn = cmds.button(label='okay!', command=self.runSel, width=150, height=35)
cmds.formLayout(form, edit=True, attachForm=[\
(self.chk1, 'top', 15),\
(self.chk1, 'left', 15),\
(self.chk2, 'top', 30),\
(self.chk2, 'left', 15),\
(self.okayBtn, 'top', 50),\
(self.okayBtn, 'left', 15)])
cmds.showWindow( self.expWindow )
def opt1On(self, args):
print "User checked option1"
startAnimation = cmds.playbackOptions(query=True, minTime=True)
endAnimation = cmds.playbackOptions(query=True, maxTime=True)
self.start = startAnimation
self.end = endAnimation
def opt1Off(self, args):
print "User un-checked option1"
cmds.radioButton(self.chk2, edit = True, enable = True)
self.start = ""
self.end = ""
def opt2On(self, args):
print "User checked option2"
startAnimation = cmds.findKeyframe(which='first')
endAnimation = cmds.findKeyframe(which='last')
self.start = startAnimation
self.end = endAnimation
#self.start.append(int(startAnimation))
#self.end.append(int(endAnimation))
def opt2Off(self, args):
print "User un-checked option2"
self.start = ""
self.end = ""
def runSel(self, args):
chkVal1 = cmds.radioButton(self.chk1, query=True, sl=1)
chkVal2 = cmds.radioButton(self.chk2, query=True, sl=1)
if chkVal1 == 1:
print "opt1 Pressed!"
print self.start
print self.end
self.test()
self.closeWindow()
elif chkVal2 == 1:
print "opt2 Pressed!"
print self.start
print self.end
self.test()
self.closeWindow()
else:
cmds.warning("Check an option")
def closeWindow(self):
cmds.deleteUI(self.expWindow, window=True)
def test(self):
self.actualExp(self.transform, self.start, self.end, self.cameraObj)
def actualExp(self, transform, startAnimation, endAnimation, cameraObj):
mayaGlobal = OpenMaya.MGlobal()
mayaGlobal.viewFrame(OpenMaya.MTime(1))
# Converts the float arguement into integer
for i in range(int(startAnimation), int(endAnimation + 1)):
focalLength = cameraObj.focalLength()
vFilmApp = cameraObj.verticalFilmAperture()
focalOut = 2 math.degrees(math.atan(vFilmApp 25.4/ (2 focalLength)))
myEuler = OpenMaya.MEulerRotation()
spc = OpenMaya.MSpace.kWorld
trans = transform.getTranslation(spc)
rotation = transform.getRotation(myEuler)
rotVector = OpenMaya.MVector(myEuler.asVector())
self.fileExport.append((str(i) + '\t' + str(trans[0]) + "\t" + str(trans[1]) + "\t" + str(trans[2]) + "\t" + str(math.degrees(rotVector[0])) + "\t" + str(math.degrees(rotVector[1])) + "\t" + str(math.degrees(rotVector[2])) + "\t" + str(focalOut) + "\n"))
mayaGlobal.viewFrame(OpenMaya.MTime(i+1))
def __call__(self, args):
return self.fileExport
def radianToDegree(self, radians):
outDegrees = 0.0
outDegrees = (float(radians) / (math.pi)) 180
return outDegrees
# creator
def translatorCreator():
return OpenMayaMPx.asMPxPtr( CustomNodeTranslator() )
# initialize the script plug-in
def initializePlugin(mobject):
mplugin = OpenMayaMPx.MFnPlugin(mobject)
try:
mplugin.registerFileTranslator(kPluginTranslatorTypeName, None, translatorCreator)
except:
sys.stderr.write( "Failed to register translator: %s" % kPluginTranslatorTypeName )
raise
# uninitialize the script plug-in
def uninitializePlugin(mobject):
mplugin = OpenMayaMPx.MFnPlugin(mobject)
try:
mplugin.deregisterFileTranslator( kPluginTranslatorTypeName )
except:
sys.stderr.write( "Failed to deregister translator: %s" % kPluginTranslatorTypeName )
raise
答案 0 :(得分：1)
__call__方法应该提供文件的内容。它返回self.fileExport，这是一个未填充的空列表。
答案 1 :(得分：0)
这里的问题是插件的编写器方法不会等待你的exportWin UI在你调用时返回用户输入
chanMe = fileExporter(transform, minTime, maxTime, cameraObject)
当用户输入输入时，后面的语句已经执行：
for all in chanMe():
fileHandle.write(all)
iterator.next()
fileHandle.close()
这就是为什么像这样的基于插件的文件导出器将其选项UI隐藏在选项框中。这些选项将在调用插件的writer（）之前传递。
您需要在另一个脚本文件中使用MEL导出选项UI代码（以某种特定格式），并在registerFileTranslator调用的optionsScriptName参数中指定该文件的名称。此选项UI与编写器插件本身之间需要遵循通信协议进行通信。 RobTheBloke's awesome post说明了这一过程。
理想情况下，writer（）方法应该具有计算和导出所需的所有细节，而无需等待用户输入。
或者，如果您希望拥有自己的UI窗口并更多地控制事物流，则可以将导出器编写为插件，而不是简单的MEL / Python模块。您仍然可以使用API的强大功能。
希望这有帮助！