Subject: How to integrate elevation data for partial terrain (e.g., Thailand) with VSG TileDatabase?

[hasanshamsijeze]

I am currently working with vsg::TileDatabase to render a globe using imagery tiles (e.g., from OpenStreetMap). I want to enhance the visualization by adding elevation data only for a specific region (such as Thailand) while keeping the rest of the globe flat.

I noticed that vsg::TileDatabaseSettings does not have a built-in option for an elevation or terrain layer, and vsg::TileDatabase does not provide virtual methods for customizing tile creation.

Could you please advise what is the recommended approach or best practice for integrating partial elevation data in VSG? Is there an official or suggested way to combine elevation meshes for a limited area with the standard tiled imagery globe? Would subclassing or extending any part of the API be appropriate, or is there any plugin or external tool you recommend?

[hasanshamsijeze]

@robertosfield please answer me

[robertosfield]

me

[robertosfield]

TileDatabaseSettings has the members:

        Path elevationLayer;
        ProcessCallback elevationLayerCallback;
        double elevationScale = 32868.0;
        double skirtRatio = 0.02;
        uint32_t maxTileDimension = 1024;

However, this really is for data sources that match the extents of imagery and elevation data so that all the tiles can be pulled for the same extents.

What you are asking for - decoupled imagery and elevation data that are on the fly reprojected into the same coordinate system and tiled and rendered is significantly more sophisticated task that the vsg::TileDatabase scheme is designed for. For that you need a dedicated library like rocky.

[hasanshamsijeze]

so can i use rocky with VSG ??"Is it possible to use the VSG library along with Rocky now? I’ve started working on a 3D project and it's almost complete — the only issue left is the tile-based map with elevation. I haven’t worked with Rocky before, so I’d appreciate any guidance you can give me. Thanks!"

[robertosfield]

Rocky is based on the VSG. Best to head over to the Rocky proiject for info about it.

Alternatively you could use a 3rd party tool to take your data and generated a 3D Tiles dataset for it. The VSG now has native implementation of 3D Tiles.

[hasanshamsijeze]

It’s good. Which way is better for my goal؟

[gwaldron]

@hasanshamsijeze Head over to the Rocky repo and give it a look. I'm one of the developers and happy to answer any questions you may have!