Parses a batched mesh JSON and creates Three.js meshes.
The geometry payload is the binary "SLVA" blob produced by the C# BinaryGeometryWriter,
base64-encoded into the outer JSON envelope. We JSON.parse the small envelope, then hand the
blob to parseBinaryMeshBatch which decodes the geometry without ever turning it into a string.
Parses a batched mesh JSON and creates Three.js meshes.
The geometry payload is the binary "SLVA" blob produced by the C#
BinaryGeometryWriter, base64-encoded into the outer JSON envelope. WeJSON.parsethe small envelope, then hand the blob toparseBinaryMeshBatchwhich decodes the geometry without ever turning it into a string.