Lines rendering & camera

[ComradeMashkov]

Hey, I have 2 issues about these things:

1. Can I choose the main camera orientation and view on the start? For example, can I set camera initial lat, lon and alt? If I can, how can I do so?
2. I'm currently rendering lines by pressing the buttons on the GUI. My lines have small length and I prefer to render them only on certain zoom level. As you can see on the screenshot, lines are being rendered even on the far distance (min zoom level) and I want them to be shown after some zooming. Can I do this? Thanks for your reply!

Screenshot

[gwaldron]

Hello!

To set the viewpoint on startup, you need to call Application::realize() manually, set a viewpoint, and then start the frame loop.(I just made realize() public in the latest push so you will need to update.) Example:

    app.realize();

    auto first_view = app.displayManager->windowsAndViews.begin()->second.front();
    if (first_view)
    {
        auto manip = rocky::MapManipulator::get(first_view);
        if (manip)
        {
            rocky::Viewpoint vp;
            vp.pitch = -90.0;
            vp.point = rocky::GeoPoint(rocky::SRS::WGS84, 45, 45, 0);
            vp.range = 1000000.0;
            manip->setViewpoint(vp);
        }
    }
    app.run();

[gwaldron]

Configuring lines (and other primitives) to use LOD or screen-space error is not integrated yet, so in the meantime you'll need to manage this yourself by setting the visible flag on your components as necessary.

(The plan is to support SSE on components in general, and possibly to provide a hook whereby you can insert your own custom node processing (like making a parent LOD node) when components get created.)