Maya2Babylon.ScriptToBabylon.doIt runtime error

Questions
1

I was trying to convert the MEL script to python but I keep getting this error on ScriptToBabylon?
I have little experience with either MEL/Python or Maya, so not sure what it’s trying to tell me here.

cmds.GenerateExportersParameter

parameters = [None] * 32
parameters[0] = output_path #DESTINATION PATH 
parameters[1] = "glb" #EXPORT FORMAT
parameters[2] = "" #TEXTURES FOLDER
parameters[3] = "1" #SCALE FACTOR
parameters[4] = "True" #WRITE TEXTURES
parameters[5] = "True" #OVERWRITE TEXTURES
parameters[6] = "False" #EXPORT HIDDEN OBJECTS
parameters[7] = "True" #EXPORT MATERIALS
parameters[8] = "False" #EXPORT ONLY SELECTED
parameters[9] = "False" #BAKE ANIMATION FRAMES
parameters[10] = "True" #OPTIMIZE ANIMATION
parameters[11] = "True" #OPTIMIZE VERTICES
parameters[12] = "False" #ANIMATION GROUP NON EXPORTED
parameters[13] = "False" #GENERATE MANIFEST
parameters[14] = "False" #AUTO SAVE SCENE FILE
parameters[15] = "True" #EXPORT TANGENTS
parameters[16] = "True" #EXPORT SKINS
parameters[17] = "True" #EXPORT MORPH TARGET
parameters[18] = "True" #EXPORT MORPH NORMALS
parameters[19] = "100" #TEXTURE QUALITY
parameters[20] = "True" #MERGE AO WITH MR
parameters[21] = "False" #DRACO COMPRESSION
parameters[22] = "False" #ENABLE KHR LIGHTS PUNCTUAL
parameters[23] = "False" #ENABLE KHR TEXTURE TRANSFORM
parameters[24] = "False" #ENABLE KHR MATERIALS UNLIT
parameters[25] = "False" #PBR FULL
parameters[26] = "False" #PBR NO LIGHT
parameters[27] = "False" #CREATE DEFAULT SKYBOX
parameters[28] = "" #PBR ENVIRONMENT
parameters[29] = "True" #EXPORT ANIMATIONS
parameters[30] = "False" #EXPORT ANIMATIONS ONLY
parameters[31] = "True" #EXPORT TEXTURES

cmds.ScriptToBabylon(exportParameters=parameters)

Error:

# Error: RuntimeError: file <string> line 2: Exception found: 
Message --- (kFailure): Unexpected Internal Failure
Source --- openmayacs
StackTrace ---    at Autodesk.Maya.OpenMaya.MArgList.asStringArray(UInt32& index)
   at Maya2Babylon.ScriptToBabylon.doIt(MArgList argl)
   at Autodesk.Maya.OpenMaya.MPxCommand.SwigDirectordoIt(IntPtr args)
TargetSite --- Autodesk.Maya.OpenMaya.MStringArray asStringArray(UInt32 ByRef) #
2

Maybe @Drigax would know, I am sorry I am so stupid with MEL

4

Not sure, we don’t officially support Python->MEL invocation, maya may very well be tripping over the python string[\] you’re passing in as an argument (judging from the stack trace), but I wouldn’t know how to fix that.

Can you try invoke the exporter via MEL command string literals, similar to how we invoke it in our sample script?

5

Alright it works when use the MEL script, I just call it with python like this

mel.eval('source "babylon-exporter.mel"')

1 Like