CloudCompare forum

Posted: **Tue Feb 19, 2013 3:14 pm**

Hi everybody,

I face some problems trying to use ccViewer in another project.
I already have a base project in Qt, and I want to use ccviewer to visualize my .ply files.
What I'm trying to do, is to call ccviewer after my current window by using a slot.
I would like to pass as an argument the path of my .ply file in order to open it.

I saw that the argument were passed in the main.cpp of ccviewer however, I did succeed to pass my filename as an argument.
Do you have any solution/help for me?

The second thing is that i'm want ccviewer to be called by a slot after i click a button on my User interface. What should I call for that?

thanks a lot for your help!

Edit : I manage to use CCviewer in my other project, however i'm not able to call ccviewer constructor ( in ccviewer.h) do you know how?

I use that

Code: Select all

ccViewer *ViewerWindow =  new ccViewer();
ViewerWindow->show();
QMainWindow *currentWindow = ViewerWindow;

Posted: **Tue Feb 19, 2013 4:34 pm**

Hi,

I face some problems trying to use ccViewer in another project.

I'm not sure what you think about when you say 'use in another project': do you want to call it as an external program or do you want to fully integrate it in another (Qt) application?

For the first version, it's quite simple: just call the ccViewer executable with the .ply filename (with full path) as argument. You can do this with the C++ 'system' command or you can use Qt's QProcess class:

Code: Select all

        QString program = "[PathToCCViewer]/ccViewer.exe";
        QStringList arguments;
        arguments << "fullPath/myfile.ply";
        QProcess *myProcess = new QProcess();
        myProcess->start(program, arguments);

Either you hardcode the full path to ccViewer, or you add ccViewer installation directory to your PATH (http://en.wikipedia.org/wiki/Environment_variable).

For the second version... it's not possible as is. ccViewer is a standalone application that has not been designed to be used like this. If you want to do it, you'll have to

remove the 'main.cpp' file (but you still have to initialize static structures, etc.)
change the fact that ccViewer inherits the QMainWindow class (you can't have two instances of QMainApplication in an application). You'll have to make it a standard QDialog for instance, but you may lose menus by doing so (not sure about that).

Posted: **Mon Feb 25, 2013 5:51 pm**

Hi,

first thanks for the reply!

Indeed I wanted to fully integrate CCviewer in another Qt application, but as you say, it seems quite complicated.
So, I think I will chose the first option that you told, just try to call CC viewer executable ( by the way thanks for writing down the methods! )

I think once I finish the first option I will try to fully integrate it but modifying the program itself. I may come back for a few more information :)

P.S. You are french no? I'm using it in a project for Centrale Lyon, and for what I read CloudCompare was developed in Telecom ParisTech,
nice to see a small "cooperation" between two engineering school :)

Thanks a lot again!

CloudCompare forum

Using CCviewer in another project

Using CCviewer in another project

Re: Using CCviewer in another project

Re: Using CCviewer in another project