isReadable property
bool
get
isReadable
Whether this geometry retains CPU-side vertex data, making extractMeshData available.
True for geometry loaded by the importers or built from attribute
arrays (MeshGeometry, GeometryBuilder, the shape geometries).
False for caller-managed vertex buffers (setVertices /
setVertexStreams) and before the first upload.
Implementation
bool get isReadable => _cpuVertices != null || _cpuPositions != null;