As a side note, for generic use (outside of maya) you can use boost python to call python from C++ and vice versa: https://www.boost.org/doc/libs/1_63_0/libs/python/doc/html/tutorial/index.html
On Tue, May 18, 2021, 23:30 Todd Widup <todd.wi...@gmail.com> wrote: > Thanks Marcus, > the txt file will be just a bunch of values and matrices ... it might be > binary it might be ascii..not 100% yet, depends how big the files get..... > was leaning towards JSon for easy of use/setup > the python Q was purely curiosity > > On Tue, May 18, 2021 at 9:50 AM Marcus Ottosson <konstrukt...@gmail.com> > wrote: > >> what would I use to allow the plugin to read an external user specified >> file, either a txt or json? >> >> You could make a string attribute on the node, and set >> MFnAttribute::isUsedAsFilename >> = true >> <https://help.autodesk.com/view/MAYAUL/2020/ENU/?guid=__cpp_ref_class_m_fn_attribute_html#a47fb4f02f1619e47363c39c9794d8191>, >> which will let users browse for a file. >> >> Once you’ve got access to a path from C++, have a look at RapidJSON >> <https://rapidjson.org/> or nlohmann/json >> <https://github.com/nlohmann/json> for a fast or convenient option, in >> that order. They’re both header-only and work just fine with something like >> Maya. You’ll likely get more options from others, because there are just so >> many options here. If you drill down into more specifics about your >> requirements, e.g. should it be human-readable? Does it need to be JSON? >> Does it need to be small? Network friendly? Is the data large, like a >> pointcache or small like a set of attributes? Will you be serialising data? >> Would you need something that can be deserialised into the same data >> structure? Etc. >> >> is there a way to have a C++ plugin run python at all? >> >> Yes, you can either call on Maya’s Python from C++ via >> MGlobal::executePythonCommand("print('hello >> world!')"); >> <https://help.autodesk.com/view/MAYAUL/2020/ENU/?guid=__cpp_ref_class_m_global_html#af47e37db0e53940620c6cd1f1111e41d> >> or you can embed another Python yourself and call that. The latter would >> have the benefit of not polluting the global Python namespace and memory, >> and is something you could use to spin up multiple Python interpreters in >> parallel if your code is performance sensitive (though I’d question why >> you’d turn to Python in that case). >> >> On Tue, 18 May 2021 at 16:34, Todd Widup <todd.wi...@gmail.com> wrote: >> >>> me writing maya plugins has been limited to mostly utility nodes and an >>> occasionally deformer. I am working on something a bit bigger and what >>> would I use to allow the plugin to read an external user specified file, >>> either a txt or json? also, been wondering, is there a way to have a C++ >>> plugin run python at all? >>> >>> -- >>> Todd Widup >>> Creature TD / Technical Artist >>> todd.wi...@gmail.com >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Python Programming for Autodesk Maya" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to python_inside_maya+unsubscr...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/CABBPk35P29DnsEqw3Chjv%2Biy0GuHkRFDOaf-jJx_o5moTA1e%2Bg%40mail.gmail.com >>> <https://groups.google.com/d/msgid/python_inside_maya/CABBPk35P29DnsEqw3Chjv%2Biy0GuHkRFDOaf-jJx_o5moTA1e%2Bg%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Python Programming for Autodesk Maya" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to python_inside_maya+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOC8cVw97ZeVtLanizhcdCzSwjbr5OY_%2BCDd0UJ-5iipdQ%40mail.gmail.com >> <https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOC8cVw97ZeVtLanizhcdCzSwjbr5OY_%2BCDd0UJ-5iipdQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Todd Widup > Creature TD / Technical Artist > todd.wi...@gmail.com > > -- > You received this message because you are subscribed to the Google Groups > "Python Programming for Autodesk Maya" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to python_inside_maya+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/python_inside_maya/CABBPk34qLGDCYOqxnck7y-o1LYaZRaSa%3D1OB4CdE%2BZXuqE3aRg%40mail.gmail.com > <https://groups.google.com/d/msgid/python_inside_maya/CABBPk34qLGDCYOqxnck7y-o1LYaZRaSa%3D1OB4CdE%2BZXuqE3aRg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Python Programming for Autodesk Maya" group. 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