thanks a lot Chad, I had tried that initially and had received some error message which led me to believe that I had been exploring an incorrect route. So .. if the command returns an MStatus object how do you actually get the result of the command from the calling script ?
thanks -Greg On Mar 10, 7:54 pm, Chad Vernon <[email protected]> wrote: > And for a bunch of doubles, you'll need to return either an MDoubleArray > with setResult or call appendToResult several times with each value. > > On Wed, Mar 10, 2010 at 4:52 PM, Chad Vernon <[email protected]> wrote: > > In MPxCommand, doIt() is supposed to return an MStatus. In order to get > > the actual command to return something, use the setResult() or > > appendToResult() methods. > > > On Wed, Mar 10, 2010 at 3:44 PM, ranxerox <[email protected]> wrote: > > >> hey all, I've been writing a command plugin which does come > >> calculations based on it's input and returns a vector back to the > >> script which was calling it. It's been a while since I've written a > >> plugin and I've never written one in python so please excuse the > >> simplicity of the question but I haven't found my answer in the > >> documentation so as a last resort I'll post it here. > > >> this is the end of my "doIt" method for my class derived from > >> OpenMayaMPx.MPxCommand, I am trying to return the vector 'vecDegrees' > >> back to the python script which is calling this command: > > >> retval = OpenMaya.MScriptUtil() > > >> retval.createFromDouble(vecDegrees[0],vecDegrees[1],vecDegrees[2],0) > >> retvalFltPtr = retval.asFloat4Ptr() > >> return retvalFltPtr > > >> from gleaning the documentation I guessed that this was the correct > >> way to do it, but I am still getting an error from the calling script > >> which is trying to index the return value, it says 'NoneType' object > >> is unsubscriptable, so I guess I'm still returning a NoneType > >> object. > > >> is this the correct way to return a value from a scripted command > >> plugin ? I tried various methods (such as appendToResult) but got > >> various errors and the documentation is really not very helpful. Any > >> help would be much appreciated for this seemingly simple task. > > >> thanks > > >> -Greg > > >> -- > >>http://groups.google.com/group/python_inside_maya > > -- http://groups.google.com/group/python_inside_maya
