Enum ParquetLayout 

pub enum ParquetLayout {
    Flat,
    SharedShapes,
}

Which flat-Parquet mesh-table layout a request asked for.

OPT-IN, defaulting to Self::Flat, and that default is the whole point. The flat wire carries no version byte (unlike /optimized), so a client that predates the shared layout cannot fail loud on one — it decodes a shared blob without error and draws every occurrence of a shared shape at the template’s placement. A server cannot tell those clients apart, so it must not produce the new layout unless the client says it understands it. Serving a smaller payload is not worth silently drawing the wrong building.

Variants

Flat

-parquet-v8: one block of vertices per mesh row, no rotation columns. Byte-identical to what the route emitted before issue #3888.

SharedShapes

-parquet-v9: occurrences of one shape share a block of vertices, placed by world = origin + R * p via the rot0..rot8 columns. v7 = v6’s schema plus a second, content-hash sharing stage (ShapePlan::shared_shapes, issue #5130): v6 only ran the rotation-aware collator, so a model whose repeats are bit-identical but not IfcMappedItem/IfcRepresentationMap occurrences (the common case on models with no instancing metadata at all) shared nothing and paid for nine all-identity rot* columns on every row for nothing.

Implementations

impl ParquetLayout

pub(crate) fn has_rotation(self) -> bool

Whether the mesh table carries rot0..rot8.

Follows the LAYOUT, not the plan: the streaming route shares nothing unless the client also sent StreamShapes::CrossBatch, yet still emits the columns as identity when the client asked for this layout, so that everything stored under the v7 key is a v7 payload.

pub(crate) fn cache_suffix(self) -> &'static str

The cache-key suffix naming this layout.

Trait Implementations

impl Clone for ParquetLayout

fn clone(&self) -> ParquetLayout

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParquetLayout

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

Formats the value using the given formatter.

impl Default for ParquetLayout

fn default() -> ParquetLayout

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ParquetLayout

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ParquetLayout

fn eq(&self, other: &ParquetLayout) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ParquetLayout

impl Eq for ParquetLayout

impl StructuralPartialEq for ParquetLayout