Error loading OBJ file
yaoyiyao
Radu Serban
As the message indicates, files in the Chrono data/ directory cannot be found (you can verify that there is no directory data/ at that location relative to where your executable is).
This is because you moved the demo away from its place in the Chrono file hierarchy.
To address this issue, you must specify a new location of where the code should be looking for data files. If you look at the source of my_example.cpp in the template_project, you will see that this is done on the very first line in the main() function:
// Set path to Chrono data directory
SetChronoDataPath(CHRONO_DATA_DIR);
Simply add this to your relocated demo_VEH_RigidTerrain code.
The manner in which the problem of locating Chrono data files is addressed in the sample template_project is one possibility (study carefully how the CMakeLists file is set up there to understand what is being done). There are other ways in which you could address the problem, but at the end of the day, you must make a call to SetChronoDataPath() to properly locate any Chrono data files your program uses.
--Radu
From: projec...@googlegroups.com <projec...@googlegroups.com>
On Behalf Of yaoyiyao
Sent: Friday, 25 November 2022 03:22
To: ProjectChrono <projec...@googlegroups.com>
Subject: [chrono] Error loading OBJ file
Hi,I run template_project successfully.Then I copy demo_VEH_RigidTerrain's code in template_project and modify cmakelist file ,but run failed.
what's wrong with it?
Many thanks in advance.
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yaoyiyao
Radu Serban
In fact, I don’t think it finds the texture concrete.jpg on line 91. It just doesn’t crash because of it.
To access vehicle data as it’s done in this demo, you should also make a call like:
vehicle::SetDataPath(CHRONO_DATA_PATH + “/vehicle”);
Alternatively, you can access vehicle-related files like this:
patch2->SetTexture(GetChronoDataFile("vehicle/terrain/textures/concrete.png"), 20, 20);
auto patch3 = terrain.AddPatch(patch3_mat, ChCoordsys<>(0, -42, 0), QUNIT),GetChronoDataFile("vehicle/terrain/meshes/bump.obj"));
and so on.
--Radu
From: projec...@googlegroups.com <projec...@googlegroups.com>
On Behalf Of yaoyiyao
Sent: Saturday, 26 November 2022 08:48
To: ProjectChrono <projec...@googlegroups.com>
Subject: Re: [chrono] Error loading OBJ file
Hi,I add SetChronoDataPath(CHRONO_DATA_DIR); to my relocated demo_VEH_RigidTerrain code,I think my data files location is right.
I debug my codes,I found it read jpg file normally,but it read obj file abnormally.
Many thanks in anvance.
On Friday, November 25, 2022 at 3:10:38 PM UTC+8 Radu Serban wrote:
As the message indicates, files in the Chrono data/ directory cannot be found (you can verify that there is no directory data/ at that location relative to where your executable is).
This is because you moved the demo away from its place in the Chrono file hierarchy.
To address this issue, you must specify a new location of where the code should be looking for data files. If you look at the source of my_example.cpp in the template_project, you will see that this is done on the very first line in the main() function:
// Set path to Chrono data directory
SetChronoDataPath(CHRONO_DATA_DIR);
Simply add this to your relocated demo_VEH_RigidTerrain code.
The manner in which the problem of locating Chrono data files is addressed in the sample template_project is one possibility (study carefully how the CMakeLists file is set up there to understand what is being done). There are other ways in which you could address the problem, but at the end of the day, you must make a call to SetChronoDataPath() to properly locate any Chrono data files your program uses.
--Radu
From: projec...@googlegroups.com <projec...@googlegroups.com> On Behalf Of yaoyiyao
Sent: Friday, 25 November 2022 03:22
To: ProjectChrono <projec...@googlegroups.com>
Subject: [chrono] Error loading OBJ file
Hi,I run template_project successfully.Then I copy demo_VEH_RigidTerrain's code in template_project and modify cmakelist file ,but run failed.
what's wrong with it?
Many thanks in advance.
--
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To view this discussion on the web visit https://groups.google.com/d/msgid/projectchrono/91958766-b73d-4974-83bf-7e2e906c50b2n%40googlegroups.com.
--
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