Dynamically changing LOD distances

[jdurrant]

Once LOD has been automatically created with the MESH.simplify function, is it possible to change the cutoff distances? I'd like to be able to adjust these distances dynamically based on the frame rate, as an optimization strategy. Thanks!

[GameMonetize]

Hello

yep you can get the mesh at a specific lod level with : lodMesh = mesh.getLODLevelAtDistance(x)

then remove it with mesh.removeLODLevel(lodMesh)

and add it where you want it with mesh.addLODLevel(newDistance, lodMesh)

[jdurrant]

Seems to work! The code is pretty trivial, but in case it helps others:

function adjustLODDistances(dist1: number, dist2: number, dist3ForNull: number) {
    for (let i = 0; i < scene.meshes.length; i++) {
        let m =scene.meshes[i];

        if (m.hasLODLevels === true) {
            // Get the current LOD levels
            let CurLODDist1 = m._LODLevels[0].distance;
            let CurLODDist2 = m._LODLevels[1].distance;
            let CurLODDist3 = m._LODLevels[2].distance;

            // Get the LOD meshes at those levels.
            let lodMesh1 = m.getLODLevelAtDistance(CurLODDist1);
            let lodMesh2 = m.getLODLevelAtDistance(CurLODDist2);
            let lodMesh3 = m.getLODLevelAtDistance(CurLODDist3);

            // Remove those levels from the mesh
            m.removeLODLevel(lodMesh1);
            m.removeLODLevel(lodMesh2);
            m.removeLODLevel(lodMesh3);

            // Add them back in, with new distances
            m.addLODLevel(dist1, lodMesh1);
            m.addLODLevel(dist2, lodMesh2);
            m.addLODLevel(dist3ForNull, lodMesh3);
        }
    }
}