Struct TerrainMeshData 

pub struct TerrainMeshData {
    pub tile: TileId,
    pub elevation_source_tile: TileId,
    pub elevation_region: TileTextureRegion,
    pub positions: Vec<[f64; 3]>,
    pub uvs: Vec<[f32; 2]>,
    pub normals: Vec<[f32; 3]>,
    pub indices: Vec<u32>,
    pub generation: u64,
    pub grid_resolution: u16,
    pub vertical_exaggeration: f32,
    pub elevation_texture: Option<TerrainElevationTexture>,
}

CPU-side terrain mesh data ready for GPU upload.

Fields

tile: TileId

Tile this mesh represents.

elevation_source_tile: TileId

Elevation source tile that backs this mesh.

When terrain display zoom exceeds the DEM source max zoom, multiple child meshes reuse a parent DEM tile. This field identifies that parent.

elevation_region: TileTextureRegion

Normalized sub-region of the elevation texture to sample for this mesh.

FULL when the elevation texture matches the display tile. For overzoomed terrain meshes this is the child sub-rect inside the parent DEM tile.

positions: Vec<[f64; 3]>

Vertex positions in world-space (f64 for precision, cast to f32 at upload).

For the reusable-grid path these positions represent the planar base surface before elevation displacement. Elevation is supplied separately via [elevation_texture] for GPU sampling.

uvs: Vec<[f32; 2]>

Texture coordinates.

normals: Vec<[f32; 3]>

Surface normals.

For reusable-grid terrain these are base-grid normals. Final terrain shading may derive finer normals in the renderer from sampled heights.

indices: Vec<u32>

Triangle indices.

generation: u64

Generation counter from the terrain manager’s elevation cache.

Increments whenever the elevation source delivers new data. Renderers compare this against the value stored on their entity to detect when a mesh must be rebuilt (e.g. when a flat placeholder is replaced by real elevation data).

grid_resolution: u16

Grid resolution used to build the reusable terrain mesh.

vertical_exaggeration: f32

Vertical exaggeration already selected for this tile.

elevation_texture: Option<TerrainElevationTexture>

Optional GPU-sampleable elevation payload for this tile.

Trait Implementations

impl Clone for TerrainMeshData

fn clone(&self) -> TerrainMeshData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TerrainMeshData

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.