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Slide management

The way the user adds elements to the slides is with streams <<

The core object is the Slideshow object that must be unique for each presentation.

Adding elements

Adding elements to the current slide is simply: 

    Slideshow show;
    show << Mesh::Add("bunny.obj");

Sequencing

If you want elements to appear not all at the same time, you must use inNextFrame:

    show << Mesh::Add("bunny.obj");
    show << inNextFrame << Latex::Add("A bunny")->at("bunny"); // will appear in the next slide

If you want to remove an object in the next slide, you can use >>: 

    auto bunny = Mesh::Add("bunny.obj");
    show << Title("The bunny disappears!")->at(TOP) << bunny;
    show << inNextFrame >> bunny; // Title remains but bunny fades away ;-(

New slide

To switch to the next slide, you must use newFrame:

    show << Title("My first slide")->at(CENTER);  
    show << PointCloud::Add(X);
    show << newFrame << Title("My second slide")->at(TOP); // new slide only contains new title