Question about the args type "irr::io::path const &" in pychrono

[Zaftrox]

When i try importing a font with getFont(filename) it doesn't work, throw the following error :
  TypeError: in method 'IGUIEnvironment_getFont', argument 2 of type 'irr::io::path const &'

the same happened with GetSceneManager().addArrowMesh(), the first arg needs to be an  'irr::io::path const &' which throw an error when passing a string.

[Dan Negrut]

Can you drop your cpp here? A small version that still shows the problem.
Can you run some demos or other small models? I wonder if this is an installation issue.
Thanks.
Dan

[Zaftrox]

i didn't use C++ to code it, i am using pychrono in python.
As i said, i encountered this issue when i tried to use a custom font for a statictext (Irrlicht rendering).
I prepared the font xml file and png using BMFont and when i called : pychrono.irrlicht..ChVisualSystemIrrlicht().GetDevice().getGUIEnvironment().getFont(filename), it throws the error  TypeError: in method 'IGUIEnvironment_getFont', argument 2 of type 'irr::io::path const &' where the filename is the path "/Physics engine/chrono project/font/fontToUse.xml".

The same goes for addArrowMesh function that i used to setup an origin for the coords system. However, when i pass the name argument (something like "X-axis" ...) it throws the same error.

[Bocheng Zou]

Hi Zaftrox,

Thank you for raising the issue. Which PyChrono distribution are you using? Are you building from source or using the conda version?

Best,

Bocheng Zou

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[Zaftrox]

I am using the conda precompiled version.

[Bocheng Zou]

Hi Zaftrox,

Which version are you using? Are you using the 9.0.1 regular release, older version or the 9.0.1 FSI special version?

Best,

Bocheng Zou

To view this discussion visit https://groups.google.com/d/msgid/projectchrono/0f0125d7-8353-497d-a8cd-1c18e94513aen%40googlegroups.com.

[Zaftrox]

version 9.0.0

[Bocheng Zou]

Hi Zaftrox,

Thank you for getting back. This is a known issue and will be fixed shortly. I will keep you posted once a fix is in-place.

Best,

Bocheng Zou

To view this discussion visit https://groups.google.com/d/msgid/projectchrono/d5e3f90a-c5e6-4680-8522-172a36fb54a7n%40googlegroups.com.

[Radu Serban]

We did not wrap all C++ functionality for use in PyChrono, especially not stuff that provides this level of control for third-party libraries (such as Irrlicht).  It is also unlikely that we will want to do that since that just complicates maintainability.

 

Having said that, it seems to me that you are interested in more cosmetic things. Are you interested in providing some form of GUI for your application?  If that is the case and if you can wait a little bit, we hope to expose in PyChrono the newer and more capable Chrono::VSG run-time visualization system.  Until then, could you please provide a few more details on what it is you are trying to do?

 

--Radu

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