tiny_obj error message: Cannot open file

[Prabasgarage]

Dear Community,

I am able to compile and run the template_project successfully. As a next step I wanted to run the demo_VEH_MAN.cpp as it is. I copied the code to new folder and modified the cmakefile accordingly. I modified nothing in demo_VEH_MAN.cpp except adding SetChronoDataPath(CHRONO_DATA_DIR); next to the main function. I am able to build and get the exe. but running the exe throws the following error as shown in the attached image. I had a look at discussions in this forum, they all suggest adding line SetChronoDataPath(CHRONO_DATA_DIR); in .cpp, which doesn't help in my case. Any help is highly appreciated.

Thanks,

Prabanjan

[Dario Mangoni]

Prabas,
please always provide a reference to the script that throws issues, not just the error itself.

Second: I wrote to you in the previous post " I think you are also missing vehicle::SetDataPath(CHRONO_VEHICLE_DATA_DIR);"
Did you do it?

[Prabasgarage]

The script is nothing but the same demo_veh_man.cpp. Anyways let me attach it here.

I am not sure where should I add this  "vehicle::SetDataPath(CHRONO_VEHICLE_DATA_DIR);". Can you advise me on this please? 

Thanks,

Prabanjan

[Radu Serban]

Prabanjan,

 

Please look (carefully) at the chrono-projects repository at https://github.com/projectchrono/chrono-projects.

 

Note that this GitHub repository is different from the main Chrono repository.

chrono-projects contains a bunch of different codes and projects that depend on various modules of Chrono, all of which are set up exactly like the template_project that you’ve been looking at so far.   In particular, it has several “configuration projects” which test precisely the kind of things you are having trouble with:  setting up one of the Chrono demos as an “external project”.  The main difference in any one of these programs in chrono-projects (compared to the corresponding demo in Chrono) is exactly the proper setting of the paths to Chrono and/or Chrono::Vehicle data.

 

You can clone the chrono-projects repository and look at demo_VEH_CityBus.cpp in that repository (not in the main repository!).  Also look carefully at how the CMakeLists scripts are set up there to properly specify the paths to data directories.

 

--Radu

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[Prabasgarage]

Thanks for the reference to the chrono_project Radu. I had a look at it.

I think my problem is chrono_data_dir is pointing to chrono/data while the obj file search path also begins with /data/vehicle/MAN_kat1/meshes..... so the "data" folder is repeated in the path. Not sure how to rectify this path issue though.