Rasterization

Dense rasterization

This will result in a dense occupancy grid where each voxel is classified as Inside, Outside, or Boundary.

// Flood fill classifies interior; requires a closed mesh
DenseRasterizer.RasterizeMesh(oGrid, mesh, floodFill: true);

• oGrid will be mutated.
• floodFill is optional and defaults to false. It is recommended to set it to true if the mesh is closed (watertight) to correctly identify interior voxels. This is a post-processing step that fills in the interior of the mesh after rasterization.

Sparse rasterization

This will only return a list of voxel origins that are classified as Boundary.

List<Vector3> origins = SparseRasterizer.RasterizeMesh(Mesh, size);

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Polyline Rasterization

The library supports voxelizing polylines into a 3D grid. This is useful for applications like pathfinding, spatial analysis, or visualizing line-based geometries in a voxel representation.

Example: Voxelizing a Polyline

PolylineF polyline = new(new Vector3[] {
    new(0, 0, 0),
    new(1, 2, 1),
    new(2, 0, 2),
    new(3, 3, 3)
});

// sparse voxelization with a voxel size of 0.1 in all dimensions
List<Vector3> origins = SparseVoxelization.RasterizePolyline(polyline, new Vector3(0.1f, 0.1f, 0.1f));

// dense voxelization into an occupancy grid
OccupancyGrid oGrid = new(
    voxelSize: new Vector3(0.1f, 0.1f, 0.1f),
    bounds: polyline.GetBounds()
);

DenseVoxelization.RasterizePolyline(oGrid, polyline);