Is possible to integration processing with MeshLab, and how?

rhoulay

Is possible to integration processing with MeshLab, and how?

in Integration and Hardware • 2 years ago

Hi... I use processing for several month, and it's amazing!

Now I work on a 3d project with processing + toxiclibs. It's need reduce vertex number when the model is too large for performance.

I check all contributed libraries on processing.org, and can not find way to do that. But I find Meshlab can do very good "reduce operation" with "quadric edge collapse decimation".

Is possible to integration processing with MeshLab? Or just "call" MeshLab run on background, and send data back to processing?

Replies(8)

cedrickie..

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

pretty sure that doesnt work... how do you generate your mesh or do you load an already existing 3d model ?

amnon.owed

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

You could try the following (untested!):

Save the model to file.
Use the open() command to run meshlabserver (the command line interface included in meshlab) with arguments.
Load the processed model from file.

It would require some preparations and has some drawbacks, but it would be a nice experiment to see if it works.

rhoulay

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

thanks amnon.owed, it's like the way.

i check the meshlabserver, and try run on command line.
My Usage:

/Applications/meshlab.app/Contents/MacOS/meshlabserver -i /Users/Felix/Desktop/sample/Laurana50k.ply -o result.ply -s /Users/Felix/Desktop/sample/test.mlx

But it's show Library not loaded Error:

dyld: Library not loaded: QtXml.framework/Versions/4/QtXml
Referenced from: /Applications/meshlab.app/Contents/MacOS/meshlabserver
Reason: image not found
Trace/BPT trap

It's I get something wrong? It's like meshlabserver hasn't find Qt Framework. I otool meshlabserver with:

otool -L /Applications/meshlab.app/Contents/MacOS/meshlabserver
/Applications/meshlab.app/Contents/MacOS/meshlabserver:
@executable_path/libcommon.1.dylib (compatibility version 1.0.0, current version 1.0.0)
QtXml.framework/Versions/4/QtXml (compatibility version 4.6.0, current version 4.6.2)
QtOpenGL.framework/Versions/4/QtOpenGL (compatibility version 4.6.0, current version 4.6.2)
QtGui.framework/Versions/4/QtGui (compatibility version 4.6.0, current version 4.6.2)
QtCore.framework/Versions/4/QtCore (compatibility version 4.6.0, current version 4.6.2)
/System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0)
/System/Library/Frameworks/AGL.framework/Versions/A/AGL (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.9.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 438.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.1)

It's feel like meshlabserver find Qt at SYSTEM PATH, don't like otool meshlab show "@executable_path/../Frameworks/QtXml.framework/Versions/4/QtXml (compatibility version 4.6.0, current version 4.6.2)"

How can I solve this problem? Should I copy Qt Framework to root, or compile my own version with custom PATH?

I not skill on command line and c++, can anyone show path?

cedrickie..

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

ok true, i didnt thought about that way. i still believe it might be a bit complicated in some cases. it really depends on how your model is generated in the first place. there might be a much easier solution.

rhoulay

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

the workflow may:

select 3d model file from processing UI(.obj, .3ds, .stl);
(Optional) processing call meshlabserver reduce vertex number, and meshlabserver save the result as file, then processing open the file in application;
processing work on the 3d model...

rhoulay

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

I try meshlabserver method on winXP, it's work

command line:

"C:\Program Files\VCG\MeshLab\meshlabserver.exe" -i "C:\Program Files\VCG\MeshLab\samples\Laurana50k.ply" -o "C:\Program Files\VCG\MeshLab\samples\result.stl" -s "C:\Program Files\VCG\MeshLab\samples\test.mlx"

processing code:

public String appPath = "C:\\Program Files\\VCG\\MeshLab\\meshlabserver.exe";
public String paramsPath = "-i \"C:\\Program Files\\VCG\\MeshLab\\samples\\Laurana50k.ply\" -o \"C:\\Program Files\\VCG\\MeshLab\\samples\\result.stl\" -s \"C:\\Program Files\\VCG\\MeshLab\\samples\\test.mlx\"";
void setup() {
size(200, 200);
String command = appPath + " " + paramsPath;
try {
Process p = Runtime.getRuntime().exec(command);
} catch (Exception err) {
err.printStackTrace();
}
exit();
}

But still not work on Mac, showing " Library not loaded Error". Maybe it's bug of meshlabserver?

rhoulay

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

ok, it's a Mac version bug of meshlabserver.

I will keep work on windows, and wait Mac version "should be closed before 1.3.0 final".

thanks amnon.owed...

amnon.owed

Re: Is possible to integration processing with MeshLab, and how?

2 years ago

Nice work.

Thanks for sharing the finished code for future generations.

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